Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Togiak National Wildlife Refuge, Alaska, 2008-2010

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Ward, David H. (ORCID: 0000-0002-5242-2526)
Publication_Date: 20210622
Title:
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Togiak National Wildlife Refuge, Alaska, 2008-2010
Geospatial_Data_Presentation_Form: tabular digital data
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 Togiak National Wildlife Refuge, Alaska, 2008-2010: U.S. Geological Survey data release, https://doi.org/10.5066/P92BMFTH
Online_Linkage: https://doi.org/10.5066/P92BMFTH
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:
These data are in six tables relating to surveys of eelgrass beds in three bays adjacent to Togiak National Wildlife Refuge, in southwestern Alaska. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass.
Purpose:
Coastal waters adjacent to Togiak 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: 20080710
Ending_Date: 20100721
Currentness_Reference: observed
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Description_of_Geographic_Extent:
Coastal waters in and around Togiak National Wildlife Refuge, Alaska
Bounding_Coordinates:
West_Bounding_Coordinate: -161.820
East_Bounding_Coordinate: -161.659
North_Bounding_Coordinate: 59.327
South_Bounding_Coordinate: 58.576
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:ASC383
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: Togiak National Wildlife Refuge
Place_Keyword: Nanvak Bay
Place_Keyword: Chagvan Bay
Place_Keyword: Goodnews 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_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 March 26, 2020, from the Integrated Taxonomic Information System online database https://www.itis.gov
Online_Linkage: https://www.itis.gov
Taxonomic_Procedures:
Animal and plant genera and/or species were identified by trained observers in the field using physical characteristics.
Taxonomic_Classification:
Taxon_Rank_Name: Domain
Taxon_Rank_Value: Eukaryota
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: 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: 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: Swaim, M.A.
Publication_Date: 2020
Title:
Distribution of Eelgrass (Zostera marina) in Coastal Waters Adjacent to Togiak National Wildlife Refuge, Alaska
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 2020-1080
Publication_Information:
Publication_Place: online
Publisher: U.S. Geological Survey
Other_Citation_Details:
Ward, D.H., Hogrefe, K.R., Donnelly, T.F., Swaim, M.A., 2022, Distribution of eelgrass (Zostera marina) in coastal waters adjacent to Togiak National Wildlife Refuge, Alaska: U.S. Geological Survey Open-File Report 2020–1080, 21 p., https://doi.org/10.3133/ofr20201080
Online_Linkage: https://doi.org/10.3133/ofr20201080
Cross_Reference:
Citation_Information:
Originator: Ward, D.H.
Originator: Hogrefe, K.R.
Originator: Swaim, M.A.
Originator: Donnelly, T.F.
Originator: Fairchild, L.L.
Publication_Date: 2020
Title:
Eelgrass (Zostera marina) and Seaweed Abundance Along the Coast of Togiak National Wildlife Refuge, Alaska, 2008-2010
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 2020–1114
Publication_Information:
Publication_Place: online
Publisher: U.S. Geological Survey
Other_Citation_Details:
Ward, D.H, Hogrefe, K.R, Swaim, M.A., Donnelly, T.F., Fairchild, L.L., 2022, Eelgrass (Zostera marina) and Seaweed Abundance along the Coast of Togiak National Wildlife Refuge, Alaska, 2008–2010: U.S. Geological Survey Open-File Report 2020–1114, 14 p., https://doi.org/10.3133/ofr20201114
Online_Linkage: https://doi.org/10.3133/ofr20201114
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. No calibration plots were collected in 2009 at Nanvak Bay. 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:
We performed boat-based sampling at Nanvak Bay in 2008-10, Chagvan Bay in 2010 and Goodnews Bay during peak eelgrass biomass (July–August). 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, and substrate type and depth. We assessed percent cover of eelgrass and seaweeds within four, 0.25 m2 quadrats that were spaced approximately 5 m apart in cardinal directions around the point.
Methodology:
Methodology_Type: Lab
Methodology_Description:
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.
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.
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:
Bay names are 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: 4
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -159.00000
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
Ellipsoid_Name: World Geodetic System of 1984
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257223563
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_samplingLocations_togiak_ward
Entity_Type_Definition:
Table of sampling point identifiers and their geographic coordinates (in UTM Zone 4N, WGS84) used during eelgrass surveys of three bays adjacent to Togiak NWR. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_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: 2010
Attribute_Units_of_Measure: Year (YYYY)
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: Nanvak
Enumerated_Domain_Value_Definition: Nanvak Bay, Alaska (approximately 58.6 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chagvan
Enumerated_Domain_Value_Definition: Chagvan Bay, Alaska (approximately 58.8 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Goodnews
Enumerated_Domain_Value_Definition: Goodnews Bay, Alaska (approximately 59.1 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: location_id
Attribute_Definition:
Survey or Calibration point number. Unique identifier of each sampling location. Corresponds to the "location_id" 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: sampling_type
Attribute_Definition: The type of sampling conducted at a location.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: point count
Enumerated_Domain_Value_Definition: Point Count sampling was conducted at the location.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: calibration quadrat
Enumerated_Domain_Value_Definition:
Measurements for eelgrass biomass estimation were collected at the location.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: easting_utmZone4
Attribute_Definition: UTM Easting coordinate; Datum WGS1984
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 338122
Range_Domain_Maximum: 346364
Attribute_Units_of_Measure: Meters (WGS84)
Attribute:
Attribute_Label: northing_utmZone4
Attribute_Definition: UTM Northing coordinate; Datum WGS1984
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6496119
Range_Domain_Maximum: 6579664
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 was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 45
Attribute_Units_of_Measure: Meters
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Blank Cell
Enumerated_Domain_Value_Definition: Error estimate not provided.
Enumerated_Domain_Value_Definition_Source: Author defined
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_pointCountData_togiak_ward
Entity_Type_Definition:
Table of point counts and measurement data from eelgrass surveys of three bays adjacent to Togiak NWR. 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 at each bay in a year. Thus, records can be uniquely identified by a combination of id, year, and bay.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 481
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: 2010
Attribute_Units_of_Measure: Year (YYYY)
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: Nanvak
Enumerated_Domain_Value_Definition: Nanvak Bay, Alaska (approximately 58.6 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chagvan
Enumerated_Domain_Value_Definition: Chagvan Bay, Alaska (approximately 58.8 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Goodnews
Enumerated_Domain_Value_Definition: Goodnews Bay, Alaska (approximately 59.1 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: location_id
Attribute_Definition:
Survey point number. Corresponds to the "location_id" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 760
Attribute:
Attribute_Label: date
Attribute_Definition: Date of Survey
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2008-07-10
Range_Domain_Maximum: 2010-07-21
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: obsrec
Attribute_Definition: Initials of field observer and recorder
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Initials of the field observer / Initials of the field recorder
Attribute:
Attribute_Label: time
Attribute_Definition:
Time of the survey. Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 9:05
Range_Domain_Maximum: 21:00
Attribute_Units_of_Measure: hh:mm
Attribute:
Attribute_Label: wdepth_cm
Attribute_Definition:
Water depth in cm. Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 292
Attribute_Units_of_Measure: Centimeters
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: dry
Enumerated_Domain_Value_Definition: No water covering survey point
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: > 300
Enumerated_Domain_Value_Definition: Water depth > 300 cm. Precise depth not recorded.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: > 100
Enumerated_Domain_Value_Definition: Water depth > 100 cm. Precise depth not recorded.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ~50
Enumerated_Domain_Value_Definition: Water depth approximately 50 cm. Precise depth not recorded.
Enumerated_Domain_Value_Definition_Source: Author defined
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 data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 35
Attribute_Units_of_Measure: Centimeters
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: >40
Enumerated_Domain_Value_Definition: Substrate depth > 40 cm. Precise depth not recorded.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: <1
Enumerated_Domain_Value_Definition: Substrate depth < 1 cm. Precise depth not recorded.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: wtemp_top_c
Attribute_Definition:
Water temperature at top of water column in degrees Celsius. Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6.6
Range_Domain_Maximum: 18.5
Attribute_Units_of_Measure: Degrees Celsius
Attribute:
Attribute_Label: wtemp_bot_c
Attribute_Definition:
Water temperature at bottom of water column in degrees Celsius. Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 8.4
Range_Domain_Maximum: 13.2
Attribute_Units_of_Measure: Degrees Celsius
Attribute:
Attribute_Label: salinty_top_c
Attribute_Definition:
Salinity at top of water column in parts per thousand. Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.3
Range_Domain_Maximum: 30.6
Attribute_Units_of_Measure: Parts per thousand (PPT)
Attribute:
Attribute_Label: salinity_bot_c
Attribute_Definition:
Salinity at bottom of water column in parts per thousand. Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.6
Range_Domain_Maximum: 30.1
Attribute_Units_of_Measure: Parts per thousand (PPT)
Attribute:
Attribute_Label: substrate
Attribute_Definition: Substrate type. Blank cells indicate that no data was 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: mud
Enumerated_Domain_Value_Definition: Mud 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: Possibly sand substrate
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: mud/sand
Enumerated_Domain_Value_Definition: Mud and sand 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: unk
Enumerated_Domain_Value_Definition: Substrate unknown
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: zm_rhiz
Attribute_Definition:
Rhizome thickness- Thick, Medium, Thin and Variable or ? (ie., no determination); in some instances there was no rhizomal growth shoots grew from a seed and these were called Annuals. Blank cells indicate that no data was 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: 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: variable
Enumerated_Domain_Value_Definition: Rhizome has variable thickness
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: annuals
Enumerated_Domain_Value_Definition: No rhizomal growth shoots grew from a seed
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ?
Enumerated_Domain_Value_Definition: no determination
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: quad
Attribute_Definition:
Name of sample 0.25 m2 quadrat (ordinal direction from survey point). Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: N
Enumerated_Domain_Value_Definition: North
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: E
Enumerated_Domain_Value_Definition: East
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: S
Enumerated_Domain_Value_Definition: South
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: W
Enumerated_Domain_Value_Definition: West
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_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: C
Enumerated_Domain_Value_Definition: Channel
Enumerated_Domain_Value_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:
Attribute_Label: zm_percent
Attribute_Definition:
Percent cover of eelgrass in the 0.25m sq quadrat; 0= no shoots, 0.1= 1 shoot present, 0.5= 2-5 shoots present
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_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: few
Enumerated_Domain_Value_Definition: Small number of eelgrass shoots in the quadrat.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: zm_repros_cat
Attribute_Definition:
Category for the number of eelgrass reproductive shoots in the quadrat. Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
The number of shoots falls within the range represented by the two numbers.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: few
Enumerated_Domain_Value_Definition: Small number of eelgrass shoots in the quadrat.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: P
Enumerated_Domain_Value_Definition:
Eelgrass reproductive shoots present in the quadrat; number not estimated.
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 data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Count
Attribute:
Attribute_Label: sw_percent
Attribute_Definition:
Percent cover of all seaweeds combined in the quadrat. Blank cells indicate that no data was 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_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: <40
Enumerated_Domain_Value_Definition: Seaweed cover < 40%. Precise coverage not recorded.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: <10
Enumerated_Domain_Value_Definition: Seaweed cover < 10%. Precise coverage not recorded.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: <5
Enumerated_Domain_Value_Definition: Seaweed cover < 5%. Precise coverage not recorded.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: P
Enumerated_Domain_Value_Definition: Seaweed present in quadrat
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ?
Enumerated_Domain_Value_Definition: Seaweed presence in quadrat unknown
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 data was 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 data was 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 data was 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: caprellipshrimp_pres
Attribute_Definition:
Presence of Caprellip shrimp in the quadrat. Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No Caprellip shrimp present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Caprellip 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 data was 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 data was 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: Telemessus crabs present
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: comments
Attribute_Definition: Comments about the survey point or quadrat.
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_togiak_ward
Entity_Type_Definition:
Table with measurements of representative individual eelgrass shoots collected from each point count location in three bays adjacent to Togiak NWR. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_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: 2010
Attribute_Units_of_Measure: Year (YYYY)
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: Nanvak
Enumerated_Domain_Value_Definition: Nanvak Bay, Alaska (approximately 58.6 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chagvan
Enumerated_Domain_Value_Definition: Chagvan Bay, Alaska (approximately 58.8 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Goodnews
Enumerated_Domain_Value_Definition: Goodnews Bay, Alaska (approximately 59.1 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: location_id
Attribute_Definition:
Survey point number. Unique identifier of each sampling location. Corresponds to the "location_id" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3
Range_Domain_Maximum: 760
Attribute:
Attribute_Label: shoot
Attribute_Definition:
A consecutive number for each shoot measured from a point count location. Records can be uniquely identified by a combination of year, bay, point, shoot.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 24
Attribute:
Attribute_Label: length
Attribute_Definition: Shoot length in cm
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3.1
Range_Domain_Maximum: 168.7
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: sheath
Attribute_Definition:
Sheath length in cm. Blank cell indicates that the attribute was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.4
Range_Domain_Maximum: 75.5
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: width
Attribute_Definition:
Leaf width in mm. Blank cell indicates that the attribute was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.0
Range_Domain_Maximum: 7.0
Attribute_Units_of_Measure: Millimeters
Attribute:
Attribute_Label: leaves
Attribute_Definition:
Number of leaves per shoot. Blank cell indicates that the attribute was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 7
Attribute_Units_of_Measure: Count
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_calibrationQuadratEstimates_togiak_ward
Entity_Type_Definition:
Table of eelgrass measurements used to calibrate biomass calculations from three bays adjacent to Togiak NWR. Records can be uniquely identified by a combination of year, bay, site, and number. No calibration plots were collected in 2009 at Nanvak Bay. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_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: 2010
Attribute_Units_of_Measure: Year (YYYY)
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: Nanvak
Enumerated_Domain_Value_Definition: Nanvak Bay, Alaska (approximately 58.6 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chagvan
Enumerated_Domain_Value_Definition: Chagvan Bay, Alaska (approximately 58.8 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Goodnews
Enumerated_Domain_Value_Definition: Goodnews Bay, Alaska (approximately 59.1 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: location_id
Attribute_Definition:
Location ID for calibration samples. Corresponds to the "location_id" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Unique identifier of each calibration site sampled. A concatenation of a bay code, year, and identifying number.
Attribute:
Attribute_Label: calibrQuadrat
Attribute_Definition: Unique identifier of each calibration quadrat sampled
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Unique identifier of each calibration quadrat sampled. A concatenation of location_id and sequential numbering of each quadrat sampled.
Attribute:
Attribute_Label: date
Attribute_Definition: Date of sample collection
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2008-07-19
Range_Domain_Maximum: 2010-07-22
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
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% cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0.4 - 0.6
Enumerated_Domain_Value_Definition: 2-3% 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% 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% 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% 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% cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5.0
Enumerated_Domain_Value_Definition: 100% cover
Enumerated_Domain_Value_Definition_Source: Braun-Blanquet 1972
Attribute:
Attribute_Label: percentCover
Attribute_Definition: Percent Eelgrass Cover. Calculated from the BBscore.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Percent
Attribute:
Attribute_Label: abundanceIndex
Attribute_Definition:
Abundance Index. 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: 7
Range_Domain_Maximum: 397
Attribute:
Attribute_Label: standingCrop
Attribute_Definition:
Standing Crop. Calculated as 4 times the dry weight of eelgrass in each 0.25 m2 quadrat (shoots_dryWt). Blank cells indicate that Standing Crop was not estimated.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.6
Range_Domain_Maximum: 202.4
Attribute_Units_of_Measure: Grams per square meter
Attribute:
Attribute_Label: shoots_count
Attribute_Definition: Number of shoots per quadrat (0.25 m2)
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4
Range_Domain_Maximum: 514
Attribute_Units_of_Measure: Count per 0.25 square meter
Attribute:
Attribute_Label: shoots_dryWt
Attribute_Definition:
Dry weight of eelgrass shoots per quadrat (0.25 m2). Blank cells indicate that dry weight was not determined.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.4
Range_Domain_Maximum: 50.6
Attribute_Units_of_Measure: Grams per 0.25 square meter
Attribute:
Attribute_Label: calibrShoots_measured
Attribute_Definition:
Number of representative shoots from the quadrat that were measured to estimate mean shoot length. Measurements provided in "eelgrass_calibrationPlantMeasures_togiak_ward.csv". Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4
Range_Domain_Maximum: 10
Attribute_Units_of_Measure: Count
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3-10 shts
Enumerated_Domain_Value_Definition: Between 3 and 10 shoots. Exact count not provided.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: calibrLength_avg
Attribute_Definition:
Mean shoot length of representative shoots from the quadrat that were measured. Measurements provided in "eelgrass_calibrationPlantMeasures_togiak_ward.csv". Blank cells indicate that no data was recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 18.2
Range_Domain_Maximum: 87.8
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: calibrLength_NA08samples
Attribute_Definition:
Mean shoot length of representative shoots from the quadrat Nanvak in 2008. Not all measurements are available, therefore the mean is used.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 36.6
Range_Domain_Maximum: 65.0
Attribute_Units_of_Measure: Centimeters
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_calibrationPlantMeasures_togiak_ward
Entity_Type_Definition:
Table with measurements of representative individual eelgrass shoots used to calibrate biomass calculations from three bays adjacent to Togiak NWR. 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: Nanvak
Enumerated_Domain_Value_Definition: Nanvak Bay, Alaska (approximately 58.6 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chagvan
Enumerated_Domain_Value_Definition: Chagvan Bay, Alaska (approximately 58.8 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Goodnews
Enumerated_Domain_Value_Definition: Goodnews Bay, Alaska (approximately 59.1 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute:
Attribute_Label: location_id
Attribute_Definition:
Location ID for calibration samples. Corresponds to the "location_id" attribute in all tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Unique identifier of each calibration site sampled. A concatenation of a bay code, year, and identifying number.
Attribute:
Attribute_Label: calibrQuadrat
Attribute_Definition: Unique identifier of each calibration quadrat sampled
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Unique identifier of each calibration quadrat sampled. A concatenation of location_id and sequential numbering of each quadrat sampled.
Attribute:
Attribute_Label: shoot
Attribute_Definition:
A consecutive number for each eelgrass shoot measured in a quadrat. Blank cell indicates that the attribute was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 10
Attribute:
Attribute_Label: calibrLength
Attribute_Definition:
Length of representative eelgrass shoot. Blank cell indicates that the attribute was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 9.0
Range_Domain_Maximum: 105.2
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: calibrSheath
Attribute_Definition:
Sheath Length of representative eelgrass shoot. Blank cell indicates that the attribute was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.0
Range_Domain_Maximum: 29.0
Attribute_Units_of_Measure: Centimeters
Attribute:
Attribute_Label: calibrWidth
Attribute_Definition:
Width of representative eelgrass shoot. Blank cell indicates that the attribute was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3.0
Range_Domain_Maximum: 5.0
Attribute_Units_of_Measure: Millimeters
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3.0-3.5
Enumerated_Domain_Value_Definition: Width between 3.0 and 3.5 millimeters
Enumerated_Domain_Value_Definition_Source: Author defined
Detailed_Description:
Entity_Type:
Entity_Type_Label: eelgrass_calibrationBiomassRegressions_togiak_ward
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 three bays in and adjacent to Togiak NWR. 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: Nanvak
Enumerated_Domain_Value_Definition: Nanvak Bay, Alaska (approximately 58.6 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chagvan
Enumerated_Domain_Value_Definition: Chagvan Bay, Alaska (approximately 58.8 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Goodnews
Enumerated_Domain_Value_Definition: Goodnews Bay, Alaska (approximately 59.1 N, 161.7 W)
Enumerated_Domain_Value_Definition_Source: USGS Geographic Names Information System
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: 0.3118
Range_Domain_Maximum: 0.4799
Attribute:
Attribute_Label: Rsq
Attribute_Definition: r-square of the regression
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.7205
Range_Domain_Maximum: 0.7561
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/P92BMFTH
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20221007
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 Oct 7 12:22:43 2022