Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Izembek National Wildlife Refuge, Alaska

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Ward, D.H. (ORCID: 0000-0002-5242-2526)
Publication_Date: 20211008
Title:
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Izembek National Wildlife Refuge, Alaska
Geospatial_Data_Presentation_Form: tabular digital data
Series_Information:
Series_Name:
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Izembek National Wildlife Refuge, Alaska
Issue_Identification: ver 3.1, May 2023
Publication_Information:
Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey, Alaska Science Center
Other_Citation_Details:
Suggested Citation: Ward, D.H., 2021, Point sampling data for eelgrass (Zostera marina) and seaweed distribution and abundance in bays adjacent to the Izembek National Wildlife Refuge, Alaska (ver 3.1, May 2023): U.S. Geological Survey data release, https://doi.org/10.5066/P9ZUDIOH
Online_Linkage: https://doi.org/10.5066/P9ZUDIOH
Larger_Work_Citation:
Citation_Information:
Originator: U.S. Geological Survey, Alaska Science Center
Publication_Date: 2009
Title: Population Ecology of Waterfowl and Loons
Geospatial_Data_Presentation_Form: website
Series_Information:
Series_Name: Alaska Science Portal
Issue_Identification: 377
Publication_Information:
Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey, Alaska Science Center
Other_Citation_Details:
This is a link to the broader USGS Alaska Science Center research project supported by these data. Users will find a description of the research project and links to associated reports, publications, and data products.
Online_Linkage: https://alaska.usgs.gov/portal/project.php?project_id=377
Description:
Abstract:
This data package is comprised of nine tables relating to surveys of eelgrass beds in Izembek and Kinzarof Lagoons, Izembek National Wildlife Refuge, Alaska. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass.
Purpose:
Coastal waters along the Izembek National Wildlife Refuge contain extensive beds of eelgrass, but the status and trends of this seagrass are unknown. These data were collected to provide point-sampling survey to determine eelgrass (Zostera marina) and seaweed abundance, distribution, and ground-truthing data for an effort to classify and map the spatial extent of eelgrass and other substrates.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2007
Ending_Date: 2022
Currentness_Reference: observed
Status:
Progress: In work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Coastal waters in and around Izembek National Wildlife Refuge, Alaska
Bounding_Coordinates:
West_Bounding_Coordinate: -163.10
East_Bounding_Coordinate: -162.50
North_Bounding_Coordinate: 55.45
South_Bounding_Coordinate: 55.15
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:ASC408
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: Biota
Theme_Keyword: Environment
Theme:
Theme_Keyword_Thesaurus: NASA GCMD Earth Science Thesaurus
Theme_Keyword: Angiosperms (flowering plants)
Theme_Keyword: Monocots
Theme_Keyword: Seagrass
Theme_Keyword: Macroalgae (seaweeds)
Theme_Keyword: Animals/Invertebrates
Theme_Keyword: Marine environment monitoring
Theme:
Theme_Keyword_Thesaurus: USGS CSA Biocomplexity Thesaurus
Theme_Keyword: Marine ecosystems
Theme_Keyword: Coastal ecosystems
Theme_Keyword: Estuarine ecosystems
Theme_Keyword: Seagrass beds
Theme_Keyword: Standing crop
Theme_Keyword: Biomass
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: Field inventory and monitoring
Theme_Keyword: Animal and plant census
Theme_Keyword: Relative abundance analysis
Theme_Keyword: Biological productivity
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Eelgrass
Theme_Keyword: Zostera marina
Place:
Place_Keyword_Thesaurus: USGS Geographic Names Information System (GNIS)
Place_Keyword: Alaska
Place_Keyword: Alaska Peninsula
Place_Keyword: Izembek National Wildlife Refuge
Place_Keyword: Izembek Lagoon
Place_Keyword: Kinzarof Bay
Taxonomy:
Keywords/Taxon:
Taxonomic_Keyword_Thesaurus: None
Taxonomic_Keywords: Seagrass
Taxonomic_Keywords: Zostera marina
Taxonomic_Keywords: Seaweed
Taxonomic_Keywords: Marine invertebrates
Taxonomic_Keywords: Echinoderms
Taxonomic_Keywords: Gastropods
Taxonomic_Keywords: Mytilidae
Taxonomic_Keywords: Caprellidae
Taxonomic_Keywords: Helmet crab
Taxonomic_Keywords: Porifera
Taxonomic_Keywords: Phaeophyceae
Taxonomic_Keywords: Ulvophyceae
Taxonomic_Keywords: Florideophyceae
Taxonomic_System:
Classification_System/Authority:
Classification_System_Citation:
Citation_Information:
Originator: ITIS Integrated Taxonomic Information System
Publication_Date: Unknown
Title: ITIS Integrated Taxonomic Information System
Geospatial_Data_Presentation_Form: online database
Publication_Information:
Publication_Place: online
Publisher: ITIS-North America
Other_Citation_Details:
Taxonomic details retrieved February 15, 2023 from the Integrated Taxonomic Information System (ITIS) online database https://www.itis.gov
Online_Linkage: https://doi.org/10.5066/F7KH0KBK
Classification_System/Authority:
Classification_System_Citation:
Citation_Information:
Originator: AlgaeBase
Publication_Date: 1996
Title: AlgaeBase
Geospatial_Data_Presentation_Form: database
Publication_Information:
Publication_Place: online
Publisher:
World-wide electronic publication, National University of Ireland, Galway
Other_Citation_Details:
Taxonomic details for seaweed species were retrieved February 15, 2023, from AlgaeBase online database http://www.algaebase.org
Online_Linkage: http://www.algaebase.org
Taxonomic_Procedures:
Animal and plant genera and/or species were identified by trained observers in the field using physical characteristics.
Taxonomic_Completeness:
Provided here is the classification of: 1) eelgrass to the rank of species, 2) marine invertebrates to the lowest taxonomic rank recorded in the field, and 3) seaweeds to the rank of class. Taxonomic details (including scientific names) of seaweed species are provided in the Table 4 of the associated USGS Open File Report (Ward 2021).
Taxonomic_Classification:
Taxon_Rank_Name: Domain
Taxon_Rank_Value: Eukaryota
Taxonomic_Classification:
Taxon_Rank_Name: Kingdom
Taxon_Rank_Value: Chromista
Taxonomic_Classification:
Taxon_Rank_Name: Subkingdom
Taxon_Rank_Value: Chromista
Taxonomic_Classification:
Taxon_Rank_Name: Division
Taxon_Rank_Value: Ochrophyta
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Phaeophyceae
Taxonomic_Classification:
Taxon_Rank_Name: Kingdom
Taxon_Rank_Value: Plantae
Taxonomic_Classification:
Taxon_Rank_Name: Subkingdom
Taxon_Rank_Value: Viridiplantae
Taxonomic_Classification:
Taxon_Rank_Name: Infrakingdom
Taxon_Rank_Value: Chlorophyta
Taxonomic_Classification:
Taxon_Rank_Name: Division
Taxon_Rank_Value: Chlorophyta
Taxonomic_Classification:
Taxon_Rank_Name: Subdivision
Taxon_Rank_Value: Chlorophytina
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Ulvophyceae
Taxonomic_Classification:
Taxon_Rank_Name: Infrakingdom
Taxon_Rank_Value: Streptophyta
Taxonomic_Classification:
Taxon_Rank_Name: Superdivision
Taxon_Rank_Value: Embryophyta
Taxonomic_Classification:
Taxon_Rank_Name: Division
Taxon_Rank_Value: Tracheophyta
Taxonomic_Classification:
Taxon_Rank_Name: Subdivision
Taxon_Rank_Value: Spermatophytina
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Magnoliopsida
Taxonomic_Classification:
Taxon_Rank_Name: Superorder
Taxon_Rank_Value: Lilianae
Taxonomic_Classification:
Taxon_Rank_Name: Order
Taxon_Rank_Value: Alismatales
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Zosteraceae
Taxonomic_Classification:
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Zostera
Taxonomic_Classification:
Taxon_Rank_Name: Species
Taxon_Rank_Value: Zostera marina
Applicable_Common_Name: TSN: 39074
Taxonomic_Classification:
Taxon_Rank_Name: Subkingdom
Taxon_Rank_Value: Biliphyta
Taxonomic_Classification:
Taxon_Rank_Name: Division
Taxon_Rank_Value: Rhodophyta
Taxonomic_Classification:
Taxon_Rank_Name: Subdivision
Taxon_Rank_Value: Eurhodophytina
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Florideophyceae
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Bangiophyceae
Taxonomic_Classification:
Taxon_Rank_Name: Kingdom
Taxon_Rank_Value: Animalia
Taxonomic_Classification:
Taxon_Rank_Name: Subkingdom
Taxon_Rank_Value: Bilateria
Taxonomic_Classification:
Taxon_Rank_Name: Infrakingdom
Taxon_Rank_Value: Protostomia
Taxonomic_Classification:
Taxon_Rank_Name: Superphylum
Taxon_Rank_Value: Lophozoa
Taxonomic_Classification:
Taxon_Rank_Name: Phylum
Taxon_Rank_Value: Mollusca
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Bivalvia
Taxonomic_Classification:
Taxon_Rank_Name: Subclass
Taxon_Rank_Value: Pteriomorphia
Taxonomic_Classification:
Taxon_Rank_Name: Order
Taxon_Rank_Value: Mytiloida
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Mytilidae
Applicable_Common_Name: TSN: 79451
Applicable_Common_Name: Mussels
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Gastropoda
Applicable_Common_Name: TSN: 69459
Applicable_Common_Name: Gastropods
Taxonomic_Classification:
Taxon_Rank_Name: Superphylum
Taxon_Rank_Value: Ecdysozoa
Taxonomic_Classification:
Taxon_Rank_Name: Phylum
Taxon_Rank_Value: Arthropoda
Taxonomic_Classification:
Taxon_Rank_Name: Subphylum
Taxon_Rank_Value: Crustacea
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Malacostraca
Taxonomic_Classification:
Taxon_Rank_Name: Subclass
Taxon_Rank_Value: Eumalacostraca
Taxonomic_Classification:
Taxon_Rank_Name: Superorder
Taxon_Rank_Value: Peracarida
Taxonomic_Classification:
Taxon_Rank_Name: Order
Taxon_Rank_Value: Amphipoda
Taxonomic_Classification:
Taxon_Rank_Name: Suborder
Taxon_Rank_Value: Caprellidea
Taxonomic_Classification:
Taxon_Rank_Name: Infraorder
Taxon_Rank_Value: Caprellida
Taxonomic_Classification:
Taxon_Rank_Name: Superfamily
Taxon_Rank_Value: Caprelloidea
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Caprellidae
Applicable_Common_Name: TSN: 95375
Applicable_Common_Name: Caprellid shrimp
Applicable_Common_Name: Skeleton shrimp
Taxonomic_Classification:
Taxon_Rank_Name: Superorder
Taxon_Rank_Value: Eucarida
Taxonomic_Classification:
Taxon_Rank_Name: Order
Taxon_Rank_Value: Decapoda
Taxonomic_Classification:
Taxon_Rank_Name: Suborder
Taxon_Rank_Value: Pleocyemata
Taxonomic_Classification:
Taxon_Rank_Name: Infraorder
Taxon_Rank_Value: Brachyura
Taxonomic_Classification:
Taxon_Rank_Name: Superfamily
Taxon_Rank_Value: Cancroidea
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Cheiragonidae
Taxonomic_Classification:
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Telmessus
Taxonomic_Classification:
Taxon_Rank_Name: Species
Taxon_Rank_Value: Telmessus cheiragonus
Applicable_Common_Name: TSN: 98663
Applicable_Common_Name: Telmessus crab
Applicable_Common_Name: Helmet crab
Taxonomic_Classification:
Taxon_Rank_Name: Infrakingdom
Taxon_Rank_Value: Deuterostomia
Taxonomic_Classification:
Taxon_Rank_Name: Phylum
Taxon_Rank_Value: Echinodermata
Taxonomic_Classification:
Taxon_Rank_Name: Subphylum
Taxon_Rank_Value: Asterozoa
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Asteroidea
Applicable_Common_Name: TSN: 156862
Applicable_Common_Name: Sea stars
Taxonomic_Classification:
Taxon_Rank_Name: Subkingdom
Taxon_Rank_Value: Radiata
Taxonomic_Classification:
Taxon_Rank_Name: Phylum
Taxon_Rank_Value: Porifera
Applicable_Common_Name: TSN: 46861
Applicable_Common_Name: Sponges
Access_Constraints: None
Use_Constraints:
It is requested that the authors and the USGS Alaska Science Center be cited for any subsequent publications that reference this dataset.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Alaska Science Center
Contact_Address:
Address_Type: Mailing and Physical
Address: 4210 University Drive
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508
Country: USA
Contact_Voice_Telephone: 907-786-7000
Contact_Electronic_Mail_Address: ascweb@usgs.gov
Cross_Reference:
Citation_Information:
Originator: Ward, D.H.
Originator: Hogrefe, K.R.
Originator: Donnelly, T.F.
Originator: Fairchild, L.L.
Originator: Sowl, K.M.
Originator: Lindstrom, S.C.
Publication_Date: 2022
Title:
Abundance and Distribution of Eelgrass (Zostera marina) and Seaweeds at Izembek National Wildlife Refuge, Alaska, 2007–2010
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 2020–1035
Publication_Information:
Publication_Place: online
Publisher: U.S. Geological Survey
Other_Citation_Details:
Ward, D.H., Hogrefe, K.R., Donnelly,T.F., Fairchild, L.L., Sowl, K.M., Lindstrom, S.C., 2022, Abundance and distribution of eelgrass (Zostera marina) and seaweeds at Izembek National Wildlife Refuge, Alaska, 2007–2010: U.S. Geological Survey Open-File Report 2020–1035, 30 p., https://doi.org/10.3133/ofr20201035
Online_Linkage: https://doi.org/10.3133/ofr20201035
Cross_Reference:
Citation_Information:
Originator: Ward, D.H.
Originator: Hogrefe, K.R.
Publication_Date: 2022
Title:
Mapping Data of Eelgrass (Zostera marina) Distribution, Alaska and Baja California, Mexico
Geospatial_Data_Presentation_Form: tabular and geospatial data
Series_Information:
Series_Name: U.S. Geological Survey Data Release
Issue_Identification: DOI: 10.5066/P9WEK4JI
Publication_Information:
Publication_Place: online
Publisher: U.S. Geological Survey
Other_Citation_Details:
Ward, D.H., Hogrefe, K.R., 2022. Mapping data of eelgrass (Zostera marina) distribution, Alaska and Baja California, Mexico: U.S. Geological Survey data release, https://doi.org/10.5066/P9WEK4JI
Online_Linkage: https://doi.org/10.5066/P9WEK4JI
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Individual sample IDs, collection dates, sampling locations, percent cover estimates, and other values were cross-checked and verified with field worksheets.
Logical_Consistency_Report:
Attribute values fall within expected ranges and data were proofed for the presence of duplication and omission.
Completeness_Report:
No data were omitted. Blank cells indicate data were not collected or not provided (see Attribute Definitions for details).
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Positions determined by hand-held GPS; accuracy estimated to be within 3 m.
Lineage:
Methodology:
Methodology_Type: Field
Methodology_Description:
Point Count Sampling: We performed boat-based sampling at Izembek and Kinzarof Lagoons between July and September 2007-2022. Survey points were distributed across each of these bays using a systematic random design and accessed by boat using a global positioning system (GPS) unit. We sampled points by snorkeling in dry suits during high tide. At each point, we measured water temperature and depth, salinity, substrate type and depth, and water clarity as determined with a 20 cm-diameter Secchi disk. We assessed percent cover of eelgrass and seaweeds within four quadrats (0.25 m2 or 0.10 m2) that were spaced approximately 5 m apart in cardinal directions around the point.
Methodology:
Methodology_Type: Field
Methodology_Description:
Calibration Sampling: To determine annual aboveground biomass of eelgrass in each bay we collected shoots from 6–22 calibration quadrats taken at the entrance of the bays and across tide heights. We estimated percent cover (BB score; Braun-Blanquet 1972) and collected all eelgrass shoots within each quadrat, removed dead leaves and below-ground parts of the plant, and selected 3–10 representative shoots that were later measured for shoot length (meristem to tip of longest leaf) and leaf width (mm). We then dried entire samples to constant mass and weighed them to determine biomass per quadrat, which was scaled to grams per square meter.
Methodology:
Methodology_Type: Field
Methodology_Description:
Monthly Eelgrass Sampling: To monitor site-specific monthly changes in eelgrass, we measured percent cover and shoot length and width of eelgrass along two permanently established 100-m-long transects at the Grant Point Old Boat Launch between April and October, yearly since 2008. Transects were aligned parallel to the shoreline, with one situated in the high (0.5 m MLLW) inter-tidal zone and the other placed in the lower (-0.2 MLLW) inter-tidal zone. Three poles have been permanently placed to mark the location of each transect:
Transect 1: High intertidal (UTM Zone 3) North pole (Easting = 0634002 Northing = 6127079) Central pole (Easting = 0633963 Northing = 6127048) South pole (Easting = 0633923 Northing = 6127015) Transect 2: Low intertidal (UTM Zone 3) North pole (Easting = 0633956 Northing = 6127135) Central pole (Easting = 0633916 Northing = 6127111) South pole (Easting = 0633872 Northing = 6127084)
Source_Information:
Source_Citation:
Citation_Information:
Originator: Braun-Blanquet, J.
Publication_Date: 1972
Title:
Plant Sociology: The Study of Plant Communities: Authorized English Translation of Pflanzensoziologie
Geospatial_Data_Presentation_Form: book
Publication_Information:
Publication_Place: New York
Publisher: Hafner Publishing Co.
Other_Citation_Details:
Braun-Blanquet, J., 1972. Plant sociology: the study of plant communities: authorized English translation of Pflanzensoziologie. (Translated, reviewed and edited by Fuller, G.D. and Conard, H.S., editors) New York: Hafner Publishing Co.
Type_of_Source_Media: publication
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1972
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Braun-Blanquet 1972
Source_Contribution:
Field Technique: describes visual estimation categories for estimating plant cover.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Guiry, M.D.
Originator: Guiry, G.M.
Publication_Date: 2023
Title: AlgaeBase
Geospatial_Data_Presentation_Form: database
Publication_Information:
Publication_Place: Galway, Ireland
Publisher: National University of Ireland, Galway
Other_Citation_Details:
Guiry, M.D., Guiry, G.M., 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on February 15, 2023.
Online_Linkage: https://www.algaebase.org
Type_of_Source_Media: online database
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20230215
Source_Currentness_Reference: access date
Source_Citation_Abbreviation: AlgaeBase
Source_Contribution: Taxonomic reference database for seaweed species
Process_Step:
Process_Description: Field data sheets were transcribed into digital spreadsheets.
Process_Date: Unknown
Process_Step:
Process_Description:
We used a linear regression to evaluate the relation between abundance index and above-ground biomass (standing crop) for each of the calibration quadrats and applied this relation to determine the above-ground biomass at each point.
Source_Used_Citation_Abbreviation: Braun-Blanquet 1972
Process_Date: Unknown
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
Lagoon names are the proper and common local geographic place names of sampling areas and do not describe precise geographic points.
Direct_Spatial_Reference_Method: Point
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 3
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -165.00000
Latitude_of_Projection_Origin: 0
False_Easting: 500000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 1
Ordinate_Resolution: 1
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: World Geodetic System of 1984 (WGS84)
Ellipsoid_Name: World Geodetic System of 1984 (WGS84)
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257223563
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_samplingLocations_izembek_ward.csv
Entity_Type_Definition:
Table of sampling point identifiers and their geographic coordinates (in UTM Zone 3N, WGS84) used during eelgrass surveys of two lagoons adjacent to Izembek National Wildlife Refuge. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author defined
Attribute:
Attribute_Label: bay
Attribute_Definition:
Name of the bay where sampling occurred. Corresponds to the "bay" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Izembek
Enumerated_Domain_Value_Definition: Izembek Lagoon, Alaska (approximately 55.33 N, 162.80 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kinzarof
Enumerated_Domain_Value_Definition: Kinzarof Lagoon, Alaska (approximately 55.29 N, 162.62 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: year
Attribute_Definition: Year when sampling occurred at each point.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2007
Range_Domain_Maximum: 2022
Attribute_Units_of_Measure: Year (YYYY)
Attribute:
Attribute_Label: PT
Attribute_Definition:
Sampling location ID. Unique identifier of each sampling location. In some years, additional sampling points were included or sampling points were moved. Numbers right of the decimal are the year of first sampling at a point. Corresponds to the "PT" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier of each sampling location.
Attribute:
Attribute_Label: easting_utmZone3
Attribute_Definition: UTM Easting coordinate; Datum WGS1984
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 622398
Range_Domain_Maximum: 657247
Attribute_Units_of_Measure: Meters (WGS84)
Attribute:
Attribute_Label: northing_utmZone3
Attribute_Definition: UTM Northing coordinate; Datum WGS1984
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6115175
Range_Domain_Maximum: 6148104
Attribute_Units_of_Measure: Meters (WGS84)
Attribute:
Attribute_Label: GPS error
Attribute_Definition:
Error in meters in locating the survey point location. Blank cells indicate that no data for GPS error were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 133
Attribute_Units_of_Measure: Meters
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_pointCountData_izembek_ward.csv
Entity_Type_Definition:
Table of point counts and measurement data from eelgrass surveys of two lagoons adjacent to Izembek National Wildlife Refuge. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author defined
Attribute:
Attribute_Label: id
Attribute_Definition:
A consecutive number for each sample record. Blank cells indicate no sample identification number was provided.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 1706
Attribute_Units_of_Measure: Count
Attribute:
Attribute_Label: bay
Attribute_Definition:
Name of the bay where sampling occurred. Corresponds to the "bay" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Izembek
Enumerated_Domain_Value_Definition: Izembek Lagoon, Alaska (approximately 55.33 N, 162.80 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kinzarof
Enumerated_Domain_Value_Definition: Kinzarof Lagoon, Alaska (approximately 55.29 N, 162.62 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: year
Attribute_Definition: Year when sampling occurred at each point.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2007
Range_Domain_Maximum: 2022
Attribute_Units_of_Measure: Year (YYYY)
Attribute:
Attribute_Label: PT
Attribute_Definition:
Sampling location ID. Unique identifier of each sampling location. In some years, additional sampling points were included or sampling points were moved. Numbers right of the decimal are the year of first sampling at a point. Corresponds to the "PT" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier of each sampling location.
Attribute:
Attribute_Label: date
Attribute_Definition: Date when sampling occurred at each point.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2007-07-29
Range_Domain_Maximum: 2022-08-19
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: time
Attribute_Definition:
Time of the point sampling. Blank cells indicate that sampling time was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6:00
Range_Domain_Maximum: 21:55
Attribute_Units_of_Measure: hh:mm
Attribute:
Attribute_Label: obsrec
Attribute_Definition:
Initials of field observer and recorder. Names of observers and field recorders are not defined due to privacy concerns.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Initials of the field observer / Initials of the field recorder
Attribute:
Attribute_Label: tide_delay
Attribute_Definition:
Hours of delay from published tide height; used to estimate tidal stage. Blank cells indicate that the tide delay data are not provided.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -1
Range_Domain_Maximum: -1
Attribute_Units_of_Measure: Hours
Attribute:
Attribute_Label: adjTide_m
Attribute_Definition:
Elevation above 'Mean Lower Low Water' of sampling point. Calculated by subtracting the recorded water depth (wDepth_m) from predicted tide height at Grant Point in Izembek Lagoon at the time of sampling (provided in the table: "eelgrass_tidePrediction_izembek_ward"). Blank cells indicate that tide elevation was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -3.50
Range_Domain_Maximum: 2.00
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: adjTide_1hr
Attribute_Definition:
Elevation above 'Mean Lower Low Water' of sampling point if tidal delay of one hour. Calculated by subtracting the recorded water depth (wDepth_m) from predicted tide height at Grant Point in Izembek Lagoon one hour prior to point sampling (provided in the table: "eelgrass_tidePrediction_izembek_ward"). Blank cells indicate that tide elevation was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -3.34
Range_Domain_Maximum: 1.26
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: adjTide_2hr
Attribute_Definition:
Elevation above 'Mean Lower Low Water' of sampling point if tidal delay of two hours. Calculated by subtracting the recorded water depth (wDepth_m) from predicted tide height at Grant Point in Izembek Lagoon two hours prior to point sampling (provided in the table: "eelgrass_tidePrediction_izembek_ward"). Blank cells indicate that tide elevation was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -3.23
Range_Domain_Maximum: 1.36
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: wDepth_m
Attribute_Definition:
Water depth at time of sampling. Blank cells indicate that no water depth data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.00
Range_Domain_Maximum: 4.30
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: subDepth_cm
Attribute_Definition:
Substrate depth in centimeters based on pushing a 10ft, 2" diameter PVC with a taped end into the substrate with one hand. Blank cells indicate that no substrate depth data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 91
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: wTemp
Attribute_Definition:
Water temperature in degrees Celsius. Blank cells indicate that no water temperature data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.6
Range_Domain_Maximum: 23.0
Attribute_Units_of_Measure: Degrees Celsius
Attribute:
Attribute_Label: salinty_top
Attribute_Definition:
Salinity at top of water column in parts per thousand. Blank cells indicate that no salinity data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.2
Range_Domain_Maximum: 37.9
Attribute_Units_of_Measure: Parts per thousand (PPT)
Attribute:
Attribute_Label: light_umol
Attribute_Definition:
Light in micromoles. Blank cells indicate that no light data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 19.48
Range_Domain_Maximum: 834.00
Attribute_Units_of_Measure: Micromoles
Attribute:
Attribute_Label: DO_mgL
Attribute_Definition:
Dissolved oxygen in milligrams per liter. Blank cells indicate that no dissolved oxygen data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.89
Range_Domain_Maximum: 19.42
Attribute_Units_of_Measure: Milligrams per liter
Attribute:
Attribute_Label: pH
Attribute_Definition:
pH of the sampled water. Blank cells indicate that no pH data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 8.14
Range_Domain_Maximum: 9.27
Attribute_Units_of_Measure: pH
Attribute:
Attribute_Label: secchi_cm
Attribute_Definition:
Depth (from the surface) in centimeters when a 20 cm-diameter Secchi disk disappears in the water column. Blank cells indicate that the secchi depth data was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 7
Range_Domain_Maximum: 573
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: substrate
Attribute_Definition:
Substrate type of the sample. Blank cells indicate that no substrate data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cobble
Enumerated_Domain_Value_Definition: Cobble substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cobble/Sand
Enumerated_Domain_Value_Definition: Cobble and sand substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mud
Enumerated_Domain_Value_Definition: Mud substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sand/Mud
Enumerated_Domain_Value_Definition: Sand and mud substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mud(?)
Enumerated_Domain_Value_Definition: Possibly mud substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mud(some)
Enumerated_Domain_Value_Definition: Mud substrate with some
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sand
Enumerated_Domain_Value_Definition: Sand substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sand/Shells
Enumerated_Domain_Value_Definition: Sand and shell substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sand
Enumerated_Domain_Value_Definition: Sand substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sand-?
Enumerated_Domain_Value_Definition: Sand and other substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Shells
Enumerated_Domain_Value_Definition: Shell substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: zm_rhiz
Attribute_Definition:
Eelgrass rhizome thickness based on observations and not actual measurments. Blank cells indicate that no rhizome thickness data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Thick
Enumerated_Domain_Value_Definition: Thick rhizome
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Thick?
Enumerated_Domain_Value_Definition: Possibly thick rhizome
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Medium
Enumerated_Domain_Value_Definition: Medium rhizome
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Thin
Enumerated_Domain_Value_Definition: Thin rhizome
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Annual
Enumerated_Domain_Value_Definition: Annual rhizome
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: None
Enumerated_Domain_Value_Definition: No rhizome present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: quad
Attribute_Definition:
Name for each quadrat sample at a point (ordinal direction from survey point).
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NE
Enumerated_Domain_Value_Definition: Northeast
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NW
Enumerated_Domain_Value_Definition: Northwest
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SE
Enumerated_Domain_Value_Definition: Southeast
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SW
Enumerated_Domain_Value_Definition: Southwest
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: zm_percent
Attribute_Definition:
Percent cover of eelgrass in the 0.25 m2 quadrat. Blank cells indicate that no eelgrass cover data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: no shoots present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.1
Enumerated_Domain_Value_Definition: 1 shoot present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.5
Enumerated_Domain_Value_Definition: 2-5 shoots present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: zm_BB
Attribute_Definition:
Braun-Blanquet (BB) visual estimation category of eelgrass cover. Blank cells indicate that no estimated eelgrass cover data were recorded.
Attribute_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: 0 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.1
Enumerated_Domain_Value_Definition: 1 shoot
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.5
Enumerated_Domain_Value_Definition: 2 shoots to 2 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1.0 - 1.8
Enumerated_Domain_Value_Definition: 3-20 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2.0 - 2.8
Enumerated_Domain_Value_Definition: 25-45 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3.0 - 3.8
Enumerated_Domain_Value_Definition: 50-70 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4.0 - 4.8
Enumerated_Domain_Value_Definition: 75-95 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5.0
Enumerated_Domain_Value_Definition: 100 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute:
Attribute_Label: zm_pres
Attribute_Definition:
Eelgrass was presence in the quadrat. Blank cells indicate that no eelgrass presence data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: eelgrass present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: eelgrass not present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: zm_repros_count
Attribute_Definition:
Number of eelgrass reproductive shoots in the quadrat. Blank cells indicate that no shoot count data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 82
Attribute_Units_of_Measure: Count
Attribute:
Attribute_Label: zm_len1 through zm_len5
Attribute_Definition:
For years since 2015, total length of representative shoot #1 through shoot #5 in quadrat. For years 2007-2011, representative shoots were selected from each point (not quadrat); shoot measurements 2007-2011 are presented in the table: "eelgrass_pointPlantMeasures_izembek_ward.csv" included in this data package. Blank cells indicate that no shoot length data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 284.4
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: zm_width1 through zm_width5
Attribute_Definition:
For years since 2015, total width of representative shoot #1 through shoot #5 in quadrat. For years 2007-2011, representative shoots were selected from each point (not quadrat); shoot measurements 2007-2011 are presented in the table: "eelgrass_pointPlantMeasures_izembek_ward.csv" included in this data package. Blank cells indicate that no shoot width data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 5.5
Attribute_Units_of_Measure: Millimeters
Attribute:
Attribute_Label: zm_length_mean
Attribute_Definition:
Mean shoot length of representative shoots. Blank cells indicate that no shoot length data were recorded, therefore a shoot length mean could not be calculated.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.4
Range_Domain_Maximum: 240.8
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: zm_width_mean
Attribute_Definition:
Mean shoot width of representative shoots. Blank cells indicate that no shoot width data were recorded, therefore a shoot width mean could not be calculated.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.3
Range_Domain_Maximum: 4.9
Attribute_Units_of_Measure: Millimeters
Attribute:
Attribute_Label: zm_abunIndex
Attribute_Definition:
Abundance Index of eelgrass. Calculated as the mean shoot length (zm_length_mean) multiplied by BBscore. Blank cells indicate that Abundance Index could not be estimated.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1157
Attribute_Units_of_Measure: unitless index
Attribute:
Attribute_Label: sw_percent
Attribute_Definition:
Percent cover of all seaweeds combined in the quadrat. Blank cells indicate that no seaweed cover data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Percent
Attribute:
Attribute_Label: sw_BB
Attribute_Definition:
Braun-Blanquet (BB) visual estimation category of seaweed cover. Blank cells indicate that no seaweed cover estimate data were recorded.
Attribute_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: 0 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.5
Enumerated_Domain_Value_Definition: 0.5-2 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1.0 - 1.9
Enumerated_Domain_Value_Definition: 3-20 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2.0 - 2.8
Enumerated_Domain_Value_Definition: 25-45 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3.0 - 3.8
Enumerated_Domain_Value_Definition: 50-70 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4.0 - 4.8
Enumerated_Domain_Value_Definition: 75-95 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5.0
Enumerated_Domain_Value_Definition: 100 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute:
Attribute_Label: domSW
Attribute_Definition:
Dominant seaweed genera in quadrat. Taxonomic details (including scientific names) of seaweed species are provided in the Table 4 of the associated USGS Open File Report (Ward 2021). Blank cells indicate that no seaweed genera were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Scientific name of seaweed genera.
Attribute:
Attribute_Label: sw_pres
Attribute_Definition:
Presence of seaweed in the quadrat. Blank cells indicate that no seaweed presence data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No seaweed present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Seaweed present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: mussels_pres
Attribute_Definition:
Presence of mussels in the quadrat. Blank cells indicate that no mussel presence data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No mussels present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Mussels present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: gastropods_pres
Attribute_Definition:
Presence of gastropods in the quadrat. Blank cells indicate that no gastropod presence data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No gastropods present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Gastropods present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: seastar_pres
Attribute_Definition:
Presence of sea stars in the quadrat. Blank cells indicate that no seastar presence data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No sea stars present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Sea stars present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: caprellidshrimp_pres
Attribute_Definition:
Presence of Caprellid shrimp in the quadrat. Blank cells indicate that no Caprellid shrimp presence data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No Caprellid shrimp present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Caprellid shrimp present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: telemessus_crab_pres
Attribute_Definition:
Presence of Telemessus crabs in the quadrat. Blank cells indicate that no Telemessus crab presence data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No Telemessus crabs present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Telemessus crabs present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: sponge_pres
Attribute_Definition:
Presence of sponges in the quadrat. Blank cells indicate that no sponge presence data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No sponges present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Sponges present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: Comments
Attribute_Definition:
Comments about the survey point or quadrat. Blank cells indicate that no comments were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Comments about the survey point or quadrat.
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_pointPlantMeasures_izembek_ward.csv
Entity_Type_Definition:
Table of eelgrass measurement data from survey points in two lagoons adjacent to Izembek National Wildlife Refuge. In 2007-2011, representative eelgrass shoots were selected from each sampling point (not quadrat); used to the calculate mean eelgrass measures presented in the table: "eelgrass_pointCountData_izembek_ward.csv" included in this data package. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author defined
Attribute:
Attribute_Label: bay
Attribute_Definition:
Name of the bay where sampling occurred. Corresponds to the "bay" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Izembek
Enumerated_Domain_Value_Definition: Izembek Lagoon, Alaska (approximately 55.33 N, 162.80 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kinzarof
Enumerated_Domain_Value_Definition: Kinzarof Lagoon, Alaska (approximately 55.29 N, 162.62 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: year
Attribute_Definition: Year when sampling occurred at each point.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2007
Range_Domain_Maximum: 2011
Attribute_Units_of_Measure: Year (YYYY)
Attribute:
Attribute_Label: PT
Attribute_Definition:
Sampling location ID. Unique identifier of each sampling location. In some years, additional sampling points were included or sampling points were moved. Numbers right of the decimal are the year of first sampling at a point. Corresponds to the "PT" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier of each sampling location.
Attribute:
Attribute_Label: zm_num
Attribute_Definition:
A consecutive number for each representative eelgrass shoot measured at a sampling point.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 29
Attribute_Units_of_Measure: Count
Attribute:
Attribute_Label: zm_length
Attribute_Definition:
Total length of each representative eelgrass shoot measured at a sampling point. Blank cells indicate that eelgrass shoot length data were not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3.3
Range_Domain_Maximum: 250.9
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: zm_width
Attribute_Definition:
Total width of each representative eelgrass shoot measured at a sampling point. Blank cells indicate that eelgrass shoot width data were not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.5
Range_Domain_Maximum: 6.0
Attribute_Units_of_Measure: Millimeters
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_calibrationQuadratShoots_izembek_ward.csv
Entity_Type_Definition:
Table of eelgrass shoot measurements used to calibrate biomass calculations from two lagoons adjacent to Izembek National Wildlife Refuge. The average values derived from these measurements are provided in the table "eelgrass_calibrationQuadratEstimates_izembek_ward.csv" included with this data package. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author defined
Attribute:
Attribute_Label: bay
Attribute_Definition:
Name of the bay where sampling occurred. Corresponds to the "bay" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Izembek
Enumerated_Domain_Value_Definition: Izembek Lagoon, Alaska (approximately 55.33 N, 162.80 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kinzarof
Enumerated_Domain_Value_Definition: Kinzarof Lagoon, Alaska (approximately 55.29 N, 162.62 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: location_id
Attribute_Definition:
Location ID for calibration samples; a site name assigned to each sampling location.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: BI
Enumerated_Domain_Value_Definition: "Banding Island" in Izembek Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NBL
Enumerated_Domain_Value_Definition: "New Boat Launch" in Izembek Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: OBL
Enumerated_Domain_Value_Definition: "Old Boat Launch" in Izembek Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: GPC
Enumerated_Domain_Value_Definition: "Grant Point Cove" in Izembek Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Island
Enumerated_Domain_Value_Definition: "Island" site in Kinzarof Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Other location_ids, not included in the above definitions, are unique identifiers of additional calibration sites sampled in 2009.
Attribute:
Attribute_Label: year
Attribute_Definition: Year of sample collection.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2007
Range_Domain_Maximum: 2022
Attribute_Units_of_Measure: year (YYYY)
Attribute:
Attribute_Label: collection_date
Attribute_Definition: Date of the sample collection.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2007-08-06
Range_Domain_Maximum: 2022-08-12
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: bag_no
Attribute_Definition:
Identifier of the sample of eelgrass shoots, collected at a particular location and tidal depth.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Identifier of the sample of eelgrass shoots, collected at a particular location and tidal depth.
Attribute:
Attribute_Label: percentCover
Attribute_Definition: Percent cover of eelgrass in the quadrat.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Percent
Attribute:
Attribute_Label: standingCrop_gm2
Attribute_Definition:
Standing Crop (biomass) of eelgrass: (eelgrass dry weight) * (1/quadArea_m2).
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 622
Attribute_Units_of_Measure: Grams per square meter
Attribute:
Attribute_Label: shoot_no
Attribute_Definition: Identifier of each shoot measured.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Identifier of each shoot measured.
Attribute:
Attribute_Label: length_cm
Attribute_Definition:
Shoot length in centimeters (cm). Blank cells indicate that no shoot length data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.5
Range_Domain_Maximum: 255.7
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: sheath_cm
Attribute_Definition:
Sheath length in centimeters (cm). Blank cells indicate that no shealth length data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.3
Range_Domain_Maximum: 50.1
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: width_mm
Attribute_Definition:
Shoot width in millimeters (mm). Blank cells indicate that no shoot width data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.5
Range_Domain_Maximum: 5.0
Attribute_Units_of_Measure: Millimeters
Attribute:
Attribute_Label: leaves
Attribute_Definition:
Number of eelgrass leaves per shoot. Blank cells indicate that no leaf count data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 7
Attribute_Units_of_Measure: Count
Attribute:
Attribute_Label: repros_quadrat
Attribute_Definition:
Number of reproductive shoots per quadrat. Blank cells indicate that no reproductive shoot count data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 91
Attribute_Units_of_Measure: Count
Attribute:
Attribute_Label: comments
Attribute_Definition:
Comments about the shoot measurements. Black cells indicate that comments were not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Comments about the shoot measurements.
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_calibrationQuadratEstimates_izembek_ward.csv
Entity_Type_Definition:
Table of eelgrass average shoot measurements used to calibrate biomass calculations from two lagoons adjacent to Izembek National Wildlife Refuge. The individual shoot measurements used to derive these averages are provided in the table, "eelgrass_calibrationQuadratShoots_izembek_ward.csv" included with this data package. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author defined
Attribute:
Attribute_Label: bay
Attribute_Definition:
Name of the bay where sampling occurred. Corresponds to the "bay" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Izembek
Enumerated_Domain_Value_Definition: Izembek Lagoon, Alaska (approximately 55.33 N, 162.80 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kinzarof
Enumerated_Domain_Value_Definition: Kinzarof Lagoon, Alaska (approximately 55.29 N, 162.62 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: location_id
Attribute_Definition:
Location ID for calibration samples; a site name assigned to each sampling location.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: BI
Enumerated_Domain_Value_Definition: "Banding Island" in Izembek Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NBL
Enumerated_Domain_Value_Definition: "New Boat Launch" in Izembek Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: OBL
Enumerated_Domain_Value_Definition: "Old Boat Launch" in Izembek Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: GPC
Enumerated_Domain_Value_Definition: "Grant Point Cove" in Izembek Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Island
Enumerated_Domain_Value_Definition: "Island" site in Kinzarof Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: new
Enumerated_Domain_Value_Definition: "new" site in Kinzarof Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Other location_ids are unique identifiers of additional calibration sites sampled in 2009.
Attribute:
Attribute_Label: year
Attribute_Definition: Year of sample collection.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2007
Range_Domain_Maximum: 2022
Attribute_Units_of_Measure: year (YYYY)
Attribute:
Attribute_Label: doy
Attribute_Definition: Day of year of the sample collection.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 196
Range_Domain_Maximum: 231
Attribute_Units_of_Measure: Day of year (ddd)
Attribute:
Attribute_Label: depth_m
Attribute_Definition:
Approximate tidal elevation relative to Mean Lower Low Water (MLLM) at sampling point. Blank cells indicate that no approximate tidal elevation data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Estimated tidal elevation ranges relative to Mean Lower Low Water (MLLM) in meters.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -1.00
Range_Domain_Maximum: 0.84
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: quadArea_m2
Attribute_Definition: Total area within the quadrat.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.10
Enumerated_Domain_Value_Definition: Quadrat area 0.10 square meters (10 cm x 10 cm)
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.25
Enumerated_Domain_Value_Definition: Quadrat area 0.25 square meters (50 cm x 50 cm)
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: easting_utmZone3
Attribute_Definition:
UTM Easting coordinate; Datum WGS1984. Blank cell indicate that the easting was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 626657
Range_Domain_Maximum: 655646
Attribute_Units_of_Measure: Meters (WGS84)
Attribute:
Attribute_Label: northing_utmZone3
Attribute_Definition:
UTM Northing coordinate; Datum WGS1984. Blank cell indicate that northing was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6117559
Range_Domain_Maximum: 6145730
Attribute_Units_of_Measure: Meters (WGS84)
Attribute:
Attribute_Label: collector
Attribute_Definition:
Initials of field sample collector. If multiple collectors were present than this is indicated by 'multiple'. Names of sample collectors are not defined due to privacy concerns. Blank cells indicate that the collector was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Initials of field sample collector.
Attribute:
Attribute_Label: BBscore
Attribute_Definition:
Braun-Blanquet (BB) visual estimation category of eelgrass cover.
Attribute_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: 0 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.2 - 0.6
Enumerated_Domain_Value_Definition: 01-3 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1.0 - 1.8
Enumerated_Domain_Value_Definition: 4-20 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2.0 - 2.8
Enumerated_Domain_Value_Definition: 25-45 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3.0 - 3.8
Enumerated_Domain_Value_Definition: 50-70 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4.0 - 4.8
Enumerated_Domain_Value_Definition: 75-95 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5.0
Enumerated_Domain_Value_Definition: 100 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute:
Attribute_Label: percentCover
Attribute_Definition: Percent cover of eelgrass in the quadrat.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Percent
Attribute:
Attribute_Label: shootdensity_m2
Attribute_Definition:
Shoot Density: (eelgrass shoots/quadrat) * (1/quadArea_m2). Blank cells indicate shoots were not counted or were not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 10
Range_Domain_Maximum: 6976
Attribute_Units_of_Measure: Count per square meter
Attribute:
Attribute_Label: reproShoots_m2
Attribute_Definition:
Reproductive Shoot Density: (reproductive shoots/quadrat) * (1/quadArea_m2). Blank cells indicate reproductive shoots were not counted or were not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 510
Attribute_Units_of_Measure: Count per square meter
Attribute:
Attribute_Label: calibrLength_avg
Attribute_Definition: Mean shoot length of 10 representative shoots from the quadrat.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 9.2
Range_Domain_Maximum: 206.7
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: calibrSheath_avg
Attribute_Definition:
Mean sheath length (root node to meristem) of 10 representative shoots from the quadrat. Blank cells indicate that no mean shealth length data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.9
Range_Domain_Maximum: 40.0
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: calibrWidth_avg
Attribute_Definition:
Mean shoot width of 10 representative shoots from the quadrat. Blank cells indicate that no mean shoot width data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.0
Range_Domain_Maximum: 4.5
Attribute_Units_of_Measure: Millimeters
Attribute:
Attribute_Label: abunIndex_BBscore
Attribute_Definition:
Abundance Index; estimated from BBscore. Calculated as the mean shoot length (calibrLength_avg) multiplied by BBscore. Blank cells indicate that Abundance Index could not be estimated.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6.5
Range_Domain_Maximum: 952.5
Attribute:
Attribute_Label: abunIndex_PC
Attribute_Definition:
Abundance Index; estimated from percent cover. Calculated as the mean shoot length (calibrLength_avg) multiplied by percent cover. Blank cells indicate that Abundance Index could not be estimated.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 30
Range_Domain_Maximum: 19050
Attribute:
Attribute_Label: standingCrop_gm2
Attribute_Definition:
Standing Crop (biomass) of eelgrass: (eelgrass dry weight) * (1/quadArea_m2).
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 622
Attribute_Units_of_Measure: Grams per square meter
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_calibrationBiomassRegressions_izembek_ward.csv
Entity_Type_Definition:
Table with results of linear regressions to evaluate the relation between abundance index and aboveground biomass (Standing Crop) in calibration quadrats from two lagoons adjacent to Izembek National Wildlife Refuge. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author defined
Attribute:
Attribute_Label: bay
Attribute_Definition:
Name of the bay where sampling occurred. Corresponds to the "bay" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Izembek
Enumerated_Domain_Value_Definition: Izembek Lagoon, Alaska (approximately 55.33 N, 162.80 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kinzarof
Enumerated_Domain_Value_Definition: Kinzarof Lagoon, Alaska (approximately 55.29 N, 162.62 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: years_inclusive
Attribute_Definition: Range of sampling years used in regression.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2008-2019
Enumerated_Domain_Value_Definition: 2007-2022
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: years_total
Attribute_Definition: Number of sampling years used in regression.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4
Range_Domain_Maximum: 11
Attribute:
Attribute_Label: index
Attribute_Definition: The abundance index used in the regression.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: PC
Enumerated_Domain_Value_Definition:
The abundance index calculated with percent cover was used in the regression.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: BB
Enumerated_Domain_Value_Definition:
The abundance index calculated with BBscore was used in the regression.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: slope
Attribute_Definition: Slope of the linear regression (y intercept = 0).
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.027
Range_Domain_Maximum: 0.853
Attribute:
Attribute_Label: Rsq
Attribute_Definition: r-square of the regression
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.719
Range_Domain_Maximum: 0.826
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_monthlyPlantMeans_izembek_ward.csv
Entity_Type_Definition:
Table of average monthly count and measurement data from eelgrass monitoring transects in Izembek Lagoon. These data were collected to monitor site-specific monthly changes in eelgrass cover, shoot length and width of eelgrass along two permanently established 100-m-long transects at the Grant Point Old Boat Launch between April and October. The individual shoot measurements used to derive these averages are provided in the table, "eelgrass_monthlyPlantMeasures_izembek_ward.csv" included with this data package. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author defined
Attribute:
Attribute_Label: location_id
Attribute_Definition:
Location ID for eelgrass monthly sampling transects; a site name assigned to each sampling location.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: OBL
Enumerated_Domain_Value_Definition: "Old Boat Landing" in Izembek Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NBL
Enumerated_Domain_Value_Definition:
"New Boat Landing" in Izembek Lagoon (only data from a single sampling effort on 2008-01-27).
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: year
Attribute_Definition: Year of sampling.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2008
Range_Domain_Maximum: 2022
Attribute_Units_of_Measure: Year (YYYY)
Attribute:
Attribute_Label: month
Attribute_Definition: Month of sampling. 01 (January) to 12 (December).
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 12
Attribute_Units_of_Measure: Month
Attribute:
Attribute_Label: week
Attribute_Definition: Week of the year.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3
Range_Domain_Maximum: 50
Attribute_Units_of_Measure: Week of the year
Attribute:
Attribute_Label: doy
Attribute_Definition: Day of the year.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 21
Range_Domain_Maximum: 349
Attribute_Units_of_Measure: Day of the year
Attribute:
Attribute_Label: date
Attribute_Definition: Date of sampling.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2008-01-27
Range_Domain_Maximum: 2022-08-12
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: sample_id
Attribute_Definition:
Unique identifier of each quadrat sampled. Blank cells indicate that a sample id was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier of each quadrat sampled.
Attribute:
Attribute_Label: intertidal
Attribute_Definition: Relative inter-tidal height of transect.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: High
Enumerated_Domain_Value_Definition:
High in the inter-tidal zone, approximately 0.5 m above Mean Lower Low Water (MLLW).
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Low
Enumerated_Domain_Value_Definition:
Low in the inter-tidal zone, approximately 0.2 m below Mean Lower Low Water (MLLW).
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: randomPt_m
Attribute_Definition: Randomly chosen distance along transect for sampling.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: quadArea_m2
Attribute_Definition: Total area within the quadrat.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.10
Enumerated_Domain_Value_Definition: Quadrat area 0.10 square meters (10 cm x 10 cm)
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.25
Enumerated_Domain_Value_Definition: Quadrat area 0.25 square meters (50 cm x 50 cm)
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: collector
Attribute_Definition:
Initials of field sample collector. Names of collectors are not defined due to privacy concerns.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Initials of field sample collector.
Attribute:
Attribute_Label: percentCover
Attribute_Definition:
Percent cover of eelgrass in the quadrat. Blank cells indicate that no percent cover data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Percent
Attribute:
Attribute_Label: BBscore
Attribute_Definition:
Braun-Blanquet (BB) visual estimation category of eelgrass cover. Blank cells indicate that the BB score was not recorded.
Attribute_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: 0 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1.0 - 1.8
Enumerated_Domain_Value_Definition: 5-20 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2.0 - 2.8
Enumerated_Domain_Value_Definition: 25-45 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3.0 - 3.8
Enumerated_Domain_Value_Definition: 50-70 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4.0 - 4.8
Enumerated_Domain_Value_Definition: 75-95 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5.0
Enumerated_Domain_Value_Definition: 100 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute:
Attribute_Label: shoots
Attribute_Definition:
Number of representative shoots measured from each quadrat. Blank cells indicate that no shoot data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4
Range_Domain_Maximum: 12
Attribute_Units_of_Measure: Count
Attribute:
Attribute_Label: monthLength_avg
Attribute_Definition:
Mean shoot length of representative shoots from the quadrat. Blank cells indicate that no mean shoot length data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 9.3
Range_Domain_Maximum: 199.4
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: monthSheath_avg
Attribute_Definition:
Mean sheath length (root node to meristem) of representative shoots from the quadrat. Blank cells indicate that no mean sheath length data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.2
Range_Domain_Maximum: 38.5
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: monthWidth_avg
Attribute_Definition:
Mean shoot width of representative shoots from the quadrat. Blank cells indicate that no mean shoot width data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.2
Range_Domain_Maximum: 4.3
Attribute_Units_of_Measure: Millimeters
Attribute:
Attribute_Label: monthLeaves_avg
Attribute_Definition:
Mean number of leaves on representative shoots from the quadrat. Blank cells indicate that no mean leave data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.4
Range_Domain_Maximum: 5.1
Attribute_Units_of_Measure: Mean Count
Attribute:
Attribute_Label: monthAbundanceIndex
Attribute_Definition:
Abundance Index of eelgrass. Calculated as the mean shoot length (monthLength_avg) multiplied by BBscore. Blank cells indicate that Abundance Index could not be estimated.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 15
Range_Domain_Maximum: 997
Attribute_Units_of_Measure: unitless index
Attribute:
Attribute_Label: vegDensity_quad
Attribute_Definition:
Vegetative Shoot Density. Number of vegetative eelgrass shoots in each quadrat. Blank cells indicate that no vegetative shoot density data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 54
Range_Domain_Maximum: 598
Attribute_Units_of_Measure: Count per quadrat
Attribute:
Attribute_Label: reproDensity_quad
Attribute_Definition:
Reproductive Shoot Density. Number of reproductive eelgrass shoots in each 0.25 m2 quadrat. Blank cells indicate that no reproductive shoot density data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 37
Attribute_Units_of_Measure: Count per quadrat
Attribute:
Attribute_Label: biomass_m2
Attribute_Definition:
Biomass (standing crop) of eelgrass: (eelgrass dry weight) * (1/quadArea_m2). Blank cell indicates that the biomass was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 15
Range_Domain_Maximum: 178
Attribute_Units_of_Measure: Grams per square meter
Attribute:
Attribute_Label: pred_Biomass
Attribute_Definition:
Predicted standing crop of eelgrass based on the functional relationship between the AbunIndex and eelgrass biomass as determined by the annual calibration plots. Blank cells indicate that the predicted biomass was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 11
Range_Domain_Maximum: 713
Attribute_Units_of_Measure: Grams per square meter
Attribute:
Attribute_Label: Comments
Attribute_Definition:
Comments about the transect or quadrat. Black cells indicate that comments were not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Comments about the transect or quadrat.
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_monthlyPlantMeasures_izembek_ward.csv
Entity_Type_Definition:
Table of monthly count and measurement data from eelgrass monitoring transects in Izembek Lagoon. These data were collected to monitor site-specific monthly changes in eelgrass cover, shoot length and width of eelgrass along two permanently established 100-m-long transects at the Grant Point Old Boat Launch between April and October. The average values derived from these measurements are provided in the table "eelgrass_monthlyPlantMeans_izembek_ward.csv" included with this data package. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author defined
Attribute:
Attribute_Label: location_id
Attribute_Definition:
Location ID for eelgrass monthly sampling transects; a site name assigned to each sampling location.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: OBL
Enumerated_Domain_Value_Definition: "Old Boat Landing" in Izembek Lagoon
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NBL
Enumerated_Domain_Value_Definition:
"New Boat Landing" in Izembek Lagoon (only data from a single sampling effort on 2008-01-27).
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: year
Attribute_Definition: Year of sampling.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2008
Range_Domain_Maximum: 2022
Attribute_Units_of_Measure: Year (YYYY)
Attribute:
Attribute_Label: month
Attribute_Definition: Month of sampling. 01 (January) to 12 (December).
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 12
Attribute_Units_of_Measure: Month
Attribute:
Attribute_Label: date
Attribute_Definition: Date of sampling.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2008-01-27
Range_Domain_Maximum: 2022-08-12
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: sample_id
Attribute_Definition: Unique identifier of each quadrat sampled.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier of each quadrat sampled.
Attribute:
Attribute_Label: shoot_id
Attribute_Definition: Unique identifier of each shoot measured.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier of each shoot measured.
Attribute:
Attribute_Label: intertidal
Attribute_Definition: Relative inter-tidal height of transect.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: High
Enumerated_Domain_Value_Definition:
High in the inter-tidal zone, approximately 0.5 m above Mean Lower Low Water (MLLW).
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Low
Enumerated_Domain_Value_Definition:
Low in the inter-tidal zone, approximately 0.2 m below Mean Lower Low Water (MLLW).
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: randomPt_m
Attribute_Definition: Randomly chosen distance along transect for sampling.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: quadArea_m2
Attribute_Definition: Total area within the quadrat.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.10
Enumerated_Domain_Value_Definition: Quadrat area 0.10 square meters (10 cm x 10 cm)
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.25
Enumerated_Domain_Value_Definition: Quadrat area 0.25 square meters (50 cm x 50 cm)
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: collector
Attribute_Definition:
Initials of field sample collector. Names of collectors are not defined due to privacy concerns.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Initials of field sample collector.
Attribute:
Attribute_Label: percentCover
Attribute_Definition:
Percent cover of eelgrass in the quadrat. Blank cells indicate that no percent cover data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Percent
Attribute:
Attribute_Label: BBscore
Attribute_Definition:
Braun-Blanquet (BB) visual estimation category of eelgrass cover. Blank cells indicate that the BB score was not recorded.
Attribute_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1.0 - 1.8
Enumerated_Domain_Value_Definition: 5-20 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2.0 - 2.8
Enumerated_Domain_Value_Definition: 25-45 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3.0 - 3.8
Enumerated_Domain_Value_Definition: 50-70 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4.0 - 4.8
Enumerated_Domain_Value_Definition: 75-95 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5.0
Enumerated_Domain_Value_Definition: 100 percent cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute:
Attribute_Label: abunIndex_BB
Attribute_Definition:
BB Abundance Index. Calculated as the shoot length (length_cm) multiplied by BBscore. Blank cells indicate that BB Abundance Index could not be estimated.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 8
Range_Domain_Maximum: 1195
Attribute_Units_of_Measure: unitless index
Attribute:
Attribute_Label: length_cm
Attribute_Definition:
The shoot length of a representative shoot from the quadrat. Blank cells indicate that no shoot length data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4.8
Range_Domain_Maximum: 239.0
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: sheath_cm
Attribute_Definition:
The sheath length (root node to meristem) of a representative shoot from the quadrat. Blank cells indicate that no sheath length data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.1
Range_Domain_Maximum: 68.1
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: width_mm
Attribute_Definition:
The shoot width of a representative shoot from the quadrat. Blank cells indicate that no shoot width data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.0
Range_Domain_Maximum: 5.0
Attribute_Units_of_Measure: Millimeters
Attribute:
Attribute_Label: leaves
Attribute_Definition:
The number of leaves on a representative shoot from the quadrat. Blank cells indicate that no leaf count data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 7
Attribute_Units_of_Measure: Mean Count
Attribute:
Attribute_Label: vegDensity_quad
Attribute_Definition:
Abundance Index of eelgrass. Calculated as the mean shoot length multiplied by BBscore. Blank cells indicate that Abundance Index could not be estimated.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 54
Range_Domain_Maximum: 598
Attribute_Units_of_Measure: unitless index
Attribute:
Attribute_Label: vegDensity_quad
Attribute_Definition:
Vegetative Shoot Density. Number of vegetative eelgrass shoots in each quadrat. Blank cells indicate that no vegetative shoot density data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 54
Range_Domain_Maximum: 598
Attribute_Units_of_Measure: Count per quadrat
Attribute:
Attribute_Label: reproDensity_quad
Attribute_Definition:
Reproductive Shoot Density. Number of reproductive eelgrass shoots in each 0.25 m2 quadrat. Blank cells indicate that no reproductive shoot density data were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 37
Attribute_Units_of_Measure: Count per quadrat
Attribute:
Attribute_Label: biomass_m2
Attribute_Definition:
Biomass (standing crop) of eelgrass in each quadrat. Blank cell indicates that the biomass was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.74
Range_Domain_Maximum: 74.36
Attribute_Units_of_Measure: Grams per quadrat
Attribute:
Attribute_Label: Comments
Attribute_Definition:
Comments about the transect or quadrat. Black cells indicate that comments were not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Comments about the transect or quadrat.
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_tidePrediction_izembek_ward.csv
Entity_Type_Definition:
Table with predicted tide heights at Grant Point (approximately 55.27 N, 162.90 W) in Izembek Lagoon, Alaska at one hour intervals prior to sampling. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author defined
Attribute:
Attribute_Label: bay
Attribute_Definition:
Name of the bay where sampling occurred. Corresponds to the "bay" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Izembek
Enumerated_Domain_Value_Definition: Izembek Lagoon, Alaska (approximately 55.33 N, 162.80 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kinzarof
Enumerated_Domain_Value_Definition: Kinzarof Lagoon, Alaska (approximately 55.29 N, 162.62 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: PT
Attribute_Definition:
Sampling location ID. Unique identifier of each sampling location. In some years, additional sampling points were included or sampling points were moved. Numbers right of the decimal are the year of first sampling at a point. Corresponds to the "PT" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier of each sampling location.
Attribute:
Attribute_Label: date
Attribute_Definition: Date when sampling occurred at each point.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2007-07-29
Range_Domain_Maximum: 2019-08-08
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: time
Attribute_Definition:
Time of point sampling. Blank cells indicate that the time of sampling was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6:00
Range_Domain_Maximum: 21:55
Attribute_Units_of_Measure: hh:mm
Attribute:
Attribute_Label: time_1hr
Attribute_Definition: Time one hour prior to the point sampling time.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5:00
Range_Domain_Maximum: 20:55
Attribute_Units_of_Measure: hh:mm
Attribute:
Attribute_Label: time_hr2
Attribute_Definition: Time two hours prior to the point sampling time.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4:00
Range_Domain_Maximum: 19:55
Attribute_Units_of_Measure: hh:mm
Attribute:
Attribute_Label: predTide_m
Attribute_Definition:
Predicted tide height at Grant Point in Izembek Lagoon at time of point sampling. Blank cells indicate the predicted tide height data were not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.35
Range_Domain_Maximum: 2.10
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: predTide_1hr
Attribute_Definition:
Predicted tide height at Grant Point in Izembek Lagoon one hour prior to point sampling. Blank cells indicate the predicted tide height an hour prior to sampling was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.32
Range_Domain_Maximum: 2.10
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: predTide_2hr
Attribute_Definition:
Predicted tide height at Grant Point in Izembek Lagoon two hours prior to point sampling. Blank cells indicate the predicted tide height two-hours prior to sampling was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.35
Range_Domain_Maximum: 2.10
Attribute_Units_of_Measure: Meters
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Alaska Science Center
Contact_Address:
Address_Type: Mailing and Physical
Address: 4210 University Drive
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508
Country: USA
Contact_Voice_Telephone: 907-786-7000
Contact_Electronic_Mail_Address: ascweb@usgs.gov
Resource_Description:
The U.S. Geological Survey, Alaska Science Center is the authoritative source and distributor of these data.
Distribution_Liability:
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data for other purposes or on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: CSV
Format_Information_Content:
Data are distributed in a Zip package containing data in CSV format and FGDC metadata in XML and HTML formats.
File_Decompression_Technique:
Compression applied by the 7-Zip utility using the default compression level [5]. The Zip package can be decompressed and unpacked by open source or commercially available unzip tools.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.5066/P9ZUDIOH
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20230525
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Alaska Science Center
Contact_Address:
Address_Type: Mailing and Physical
Address: 4210 University Drive
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508
Country: USA
Contact_Voice_Telephone: 907-786-7000
Contact_Electronic_Mail_Address: ascweb@usgs.gov
Metadata_Standard_Name:
FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata (CSDGM)
Metadata_Standard_Version: FGDC-STD-001.1-1999
Generated by mp version 2.9.52 on Fri May 26 00:10:07 2023