Glacier Bay National Park and Preserve Sea Otter Forage Data, 1993-2019

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Kloecker, Kimberly A. (ORCID:0000-0002-2461-968X)
Originator: Esslinger, George G. (ORCID:0000-0002-3459-0083)
Originator: Monson, Daniel H. (ORCID:0000-0002-4593-5673)
Publication_Date: 20240321
Title: Glacier Bay National Park Sea Otter Forage Data 1993-2019
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: Kloecker, K. A., Esslinger, G.G., Monson, D.H., 2024. Glacier Bay National Park and Preserve sea otter forage data, 1993-2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9T6UB5G
Online_Linkage: https://doi.org/10.5066/P9T6UB5G
Larger_Work_Citation:
Citation_Information:
Originator: U.S. Geological Survey, Alaska Science Center
Publication_Date: 2005
Title: Nearshore Marine Ecosystem Research Program
Geospatial_Data_Presentation_Form: website
Series_Information:
Series_Name: Alaska Science Portal
Issue_Identification: 99
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=99
Description:
Abstract:
These data describe observations of sea otter foraging behavior in Glacier Bay National Park and Preserve. Data consist of dive and surface times, success in prey retrieval, prey item, prey quantity, and size. Additionally, location of observations, and age class, sex, and pup status of the focal sea otter were also recorded.
Purpose:
The purpose of these data was to allow comparison of a set of sea otter forage data metrics across time and geographic location. Metrics include: foraging success rate, composition of prey, mean size and/or size frequency distribution of common prey, number of prey items per dive, and energy intake rate. Comparisons include metrics from one location over time or from one time across locations.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1993
Ending_Date: 2019
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Description_of_Geographic_Extent: Glacier Bay National Park and Preserve
Bounding_Coordinates:
West_Bounding_Coordinate: -137.1533
East_Bounding_Coordinate: -135.6702
North_Bounding_Coordinate: 59.0857
South_Bounding_Coordinate: 58.3008
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:ASC609
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: Biota
Theme_Keyword: Environment
Theme:
Theme_Keyword_Thesaurus: NASA GCMD Earth Science Keyword Thesaurus
Theme_Keyword: Animals/Vertebrates
Theme_Keyword: Animals/Invertebrates
Theme_Keyword: Marine environment monitoring
Theme:
Theme_Keyword_Thesaurus: USGS CSAS Biocomplexity Thesaurus
Theme_Keyword: Foraging behavior
Theme_Keyword: Prey
Theme_Keyword: Marine ecology
Theme_Keyword: Coastal ecosystems
Theme_Keyword: Prey selection
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: Wildlife
Theme_Keyword: Macroinvertebrates
Theme_Keyword: Benthic ecosystems
Theme_Keyword: Coastal ecosystems
Theme_Keyword: Marine ecosystems
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Sea otters
Theme_Keyword: Enhydra lutris
Place:
Place_Keyword_Thesaurus: USGS Geographic Names Information System (GNIS)
Place_Keyword: Alaska
Place_Keyword: Gulf of Alaska
Place:
Place_Keyword_Thesaurus: Protected Areas Database of the United States (PAD-US)
Place_Keyword: Glacier Bay National Park and Preserve
Taxonomy:
Keywords/Taxon:
Taxonomic_Keyword_Thesaurus: None
Taxonomic_Keywords: Sea otters
Taxonomic_Keywords: Enhydra lutris
Taxonomic_Keywords: Marine benthic invertebrates
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 28, 2024, from the Integrated Taxonomic Information System online database https://www.itis.gov
Online_Linkage: https://doi.org/10.5066/F7KH0KBK
Classification_System/Authority:
Classification_System_Citation:
Citation_Information:
Originator: World Register of Marine Species (WoRMS)
Publication_Date: Unknown
Title: World Register of Marine Species (WoRMS)
Geospatial_Data_Presentation_Form: online database
Publication_Information:
Publication_Place: online
Publisher: WoRMS Editorial Board
Other_Citation_Details:
Taxonomic details retrieved February 28, 2024, from the World Register of Marine Species online database https://www.marinespecies.org
Online_Linkage: https://doi.org/10.14284/170
Taxonomic_Procedures:
Prey species were identified by trained observers in the field using physical characteristics. Prey were identified while the otter was handling the items at the water's surface. Observers use binoculars (10x42) and spotting scopes (field model scope, Questar Corp, New Hope, PA) to note identifying features of prey as well as characteristic handling methods that assist in identification.
General_Taxonomic_Coverage:
Provided in table "GLBA_SEOT_forage_taxonomy_1993-2019.csv" is the classification of marine invertebrates and vertebrates to the taxonomic rank of phylum, class, order, family, genus, or species. Prey items are varied and often not identified to species so broader groupings are used when applicable. Sea otters consume a wide variety of prey, primarily benthic invertebrates from hard and soft substrates, but also fish such as sand lance or lumpsuckers on occasion. Often prey cannot be identified and is entered as 'uni' for unidentifiable.
Taxonomic_Classification:
Taxon_Rank_Name: Kingdom
Taxon_Rank_Value: Animalia
Taxonomic_Classification:
Taxon_Rank_Name: Phylum
Taxon_Rank_Value: Chordata
Taxonomic_Classification:
Taxon_Rank_Name: Subphylum
Taxon_Rank_Value: Vertebrata
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Mammalia
Taxonomic_Classification:
Taxon_Rank_Name: Subclass
Taxon_Rank_Value: Theria
Taxonomic_Classification:
Taxon_Rank_Name: Infraclass
Taxon_Rank_Value: Eutheria
Taxonomic_Classification:
Taxon_Rank_Name: Order
Taxon_Rank_Value: Carnivora
Taxonomic_Classification:
Taxon_Rank_Name: Suborder
Taxon_Rank_Value: Caniformia
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Mustelidae
Taxonomic_Classification:
Taxon_Rank_Name: Subfamily
Taxon_Rank_Value: Lutrinae
Taxonomic_Classification:
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Enhydra
Taxonomic_Classification:
Taxon_Rank_Name: Species
Taxon_Rank_Value: Enhydra lutris
Applicable_Common_Name: sea otter
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
Native_Data_Set_Environment:
The original data are stored as a Microsoft Access database in a Windows operating environment. Data are exported as comma separated text files (.csv) for dissemination.
Cross_Reference:
Citation_Information:
Originator: Leach, C.
Originator: Weitzman, B.
Originator: Bodkin, J.
Originator: Esler, D.
Originator: Esslinger, G.
Originator: Kloecker, K.
Originator: Monson, D.
Originator: Womble, J.
Originator: Hooten, M.
Publication_Date: Unknown
Title:
The Dynamics of Sea Otter Prey Selection Under Population Growth and Expansion
Geospatial_Data_Presentation_Form: journal article
Series_Information:
Series_Name: Ecological Applications
Issue_Identification: TBA
Publication_Information:
Publication_Place: online
Publisher: Wiley
Other_Citation_Details:
Leach, C., Weitzman, B., Bodkin, J., Esler, D., Esslinger, G., Kloecker, K., Monson, D., Womble, J., Hooten, M., 2024. The dynamics of sea otter prey selection under population growth and expansion. Ecological Applications TBA
Online_Linkage: TBA
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The number of prey items per dive is more accurate for larger items (e.g., octopus compared to mussels). Finally, size class of prey items is based on visual comparison of item to the width of the otter's paw (average in Alaska is 52 millimeters).
Logical_Consistency_Report:
We complete lengthy quality assurance-quality control (QAQC) procedures for foraging data. Rows are checked against field data sheets for missing values, outliers, and inconsistencies. Prey codes and uniqueness of bout identifiers are verified. Observer and otter locations are plotted and checked for validity.
Completeness_Report:
Due to the observational nature of collecting foraging data, there will always be missing data. Some fields are not relevant to deriving meaning, e.g., observer, or can be assigned, e.g., unique bout identifier. Other fields are more critical to analyses and users must decide how to treat missing data before conducting analyses. This data set has been checked, however, where missing data could be assigned, it was completed.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Focal otter foraging locations are based on estimated distance and angle from observers and features marked on GPS base maps (e.g., emergent rocks, easily distinguished points on islands) and therefore should be considered accurate within 100 meters.
Lineage:
Methodology:
Methodology_Type: Field
Methodology_Description:
Experienced personnel observed tagged or untagged foraging sea otters from terrestrial vantage points throughout the study regions. Using 10x42 binoculars, Questar Field Model 53x89 spotting scopes and stopwatches, the observers followed single "focal" sea otters through successive dives, collectively referred to as a bout. They recorded the apparent sex and age class of the focal otter, the start and end time of observations, sea otter dive times, surface intervals, foraging success and the type, number and size of prey items, with size quantified relative to the focal otter's paw width. Handling time for prey consumption and portion lost, stolen, or given to a pup was also recorded. Focal otter locations were obtained by moving the map panning arrow on the handheld GPS to the focal otter's location and recording the coordinates. Locations for pre-GPS foraging bouts were estimated by using marine charts. Time of day was obtained from the GPS or observer's/recorder's watch. Dive times and surface times were obtained from the stopwatch. Raw data were recorded on data sheets by the observer or a data recorder while in the field and transcribed to an electronic format after returning from the field.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Bodkin, J.L.
Publication_Date: 2011
Title:
SOP for Collecting Sea Otter Forage Data, v. 3.2, Southwest Alaska Inventory and Monitoring Network
Geospatial_Data_Presentation_Form: report
Series_Information:
Series_Name: National Resource Report Series
Issue_Identification: 2011/394
Publication_Information:
Publication_Place: Fort Collins, Colorado
Publisher: National Park Service, Natural Resource Program Center
Other_Citation_Details:
Bodkin, J.L., 2011. SOP for collecting sea otter forage data, v. 3.2, Southwest Alaska Inventory and Monitoring Network. Natural Resource Report NPS/SWAN/NRR—2011/394. National Park Service, Fort Collins, Colorado.
Published report archived by U.S. National Park Service Catalog (IRMA Data Store) https://irma.nps.gov/DataStore [reference code: 2170929]
Online_Linkage: https://irma.nps.gov/DataStore/DownloadFile/428470
Type_of_Source_Media: document
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2011
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Bodkin 2011
Source_Contribution:
The purpose of this standard operating protocol (SOP) is to describe the justification, sampling design and process for collecting, recording, and analyzing data related to sea otter foraging observations under the SWAN nearshore monitoring program.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Gorbics, C.S.
Originator: Bodkin, J.L.
Publication_Date: 2001
Title:
Stock Structure of Sea Otters (Enhydra lutris kenyoni) in Alaska
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: Marine Mammal Science
Issue_Identification: 17(3):632-647
Publication_Information:
Publication_Place: online
Publisher: Wiley
Other_Citation_Details:
Gorbics, C.S., Bodkin, J.L., 2001. Stock structure of sea otters (Enhydra lutris kenyoni) in Alaska. Marine Mammal Science 17(3):632-647.
Online_Linkage: https://doi.org/10.1111/j.1748-7692.2001.tb01009.x
Type_of_Source_Media: publication
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2001
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Gorbics and Bodkin 2001
Source_Contribution: Provides region code identifier for Glacier Bay region.
Process_Step:
Process_Description:
Prior to 2014, field data were entered into Microsoft Excel spreadsheets from paper data sheets and then imported into a Microsoft Access database. After 2014, raw field data were entered directly into a Microsoft Access database from paper data sheets after the field season. Raw field data were entered into Microsoft Access database using a data entry form with built in validations. Access data were exported as the csv file described here.
Process_Date: Unknown
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
Regions and areas in this data set are described without coordinates, e.g., Southeast Alaska, Glacier Bay National Park and Preserve. Sites are described with site names and refer to a general location. Sites are typically assigned based on focal otter coordinates or observer coordinates if no otter coordinates were recorded. In some cases, site names were recorded but not otter or observer coordinates. Focal otter locations are described either with location names, e.g., Sita Reef, and/or coordinates.
Direct_Spatial_Reference_Method: Point
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.00000001
Longitude_Resolution: 0.00000001
Geographic_Coordinate_Units: Decimal degrees
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: GLBA_SEOT_forage_taxonomy_1993-2019.csv
Entity_Type_Definition:
Table providing species codes, names, and the taxonomic classification of all observed sea otter prey items in this data package. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author Defined
Attribute:
Attribute_Label: preytype_cd
Attribute_Definition:
Three-letter species code used during the sea otter foraging study. In most instances, a concatenation of the first two letters of the Genus and first letter of the species.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Three-letter species code used during the sea otter foraging study.
Attribute:
Attribute_Label: common_name
Attribute_Definition: Common name of the prey species or group of species sampled.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Common name of the prey species or group of species sampled.
Attribute:
Attribute_Label: phylum
Attribute_Definition:
Identity of prey items at the Phylum level. Blank cells indicate that the taxa is unspecified.
Attribute_Definition_Source:
Integrated Taxonomic Information System (ITIS) or World Register of Marine Species (WoRMS)
Attribute_Domain_Values:
Unrepresentable_Domain: Identity of prey items at the Phylum level.
Attribute:
Attribute_Label: class
Attribute_Definition:
Identity of prey items at the Class level. Blank cells indicate that the taxa is unspecified or the Class is unknown.
Attribute_Definition_Source:
Integrated Taxonomic Information System (ITIS) or World Register of Marine Species (WoRMS)
Attribute_Domain_Values:
Unrepresentable_Domain: Identity of prey items at the Class level.
Attribute:
Attribute_Label: order
Attribute_Definition:
Identity of prey items at the Order level. Blank cells indicate that the taxa is unspecified or the Order is unknown.
Attribute_Definition_Source:
Integrated Taxonomic Information System (ITIS) or World Register of Marine Species (WoRMS)
Attribute_Domain_Values:
Unrepresentable_Domain: Taxonomic identification of prey at the Order level.
Attribute:
Attribute_Label: family
Attribute_Definition:
Identity of prey items at the Family level. Blank cells indicate that the taxa is unspecified or the Family is unknown.
Attribute_Definition_Source:
Integrated Taxonomic Information System (ITIS) or World Register of Marine Species (WoRMS)
Attribute_Domain_Values:
Unrepresentable_Domain: Taxonomic identification of prey at the Family level.
Attribute:
Attribute_Label: genus
Attribute_Definition:
Identity of prey items at the Genus level. Blank cells indicate that the taxa is unspecified or the Genus is unknown.
Attribute_Definition_Source:
Integrated Taxonomic Information System (ITIS) or World Register of Marine Species (WoRMS)
Attribute_Domain_Values:
Unrepresentable_Domain: Taxonomic identification of prey at the species level.
Attribute:
Attribute_Label: scientific_name
Attribute_Definition:
Identity of prey items at the Species level. Blank cells indicate that the taxa is unspecified or the Species name is unknown.
Attribute_Definition_Source:
Integrated Taxonomic Information System (ITIS) or World Register of Marine Species (WoRMS)
Attribute_Domain_Values:
Unrepresentable_Domain: Identity of prey items at the Species level.
Attribute:
Attribute_Label: ITIS_TSN
Attribute_Definition:
A Taxonomic Serial Number (TSN) is a unique, persistent, non-intelligent identifier for taxa in the context of the Integrated Taxonomic Information System (ITIS). Blank cells indicate that the taxa is not present in the ITIS database.
Attribute_Definition_Source: Integrated Taxonomic Information System (ITIS)
Attribute_Domain_Values:
Unrepresentable_Domain:
Integrated Taxonomic Information System Taxonomic Serial Number.
Attribute:
Attribute_Label: AphiaID
Attribute_Definition:
AphiaID is a unique and stable identifier for each available taxa in the World Register of Marine Species (WoRMS) database. Blank cells indicate that the taxa is not present in the WoRMS database.
Attribute_Definition_Source: World Register of Marine Species (WoRMS)
Attribute_Domain_Values:
Unrepresentable_Domain:
AphiaID is a unique and stable identifier for each available taxa in the World Register of Marine Species (WoRMS) database.
Attribute:
Attribute_Label: notes
Attribute_Definition: Notes regarding prey taxonomy such as Scientific name changes.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Notes on prey taxonomic changes.
Detailed_Description:
Entity_Type:
Entity_Type_Label: GLBA_SEOT_forage_bouts_1993-2019.csv
Entity_Type_Definition:
Table with year-specific information on focal sea otter foraging behavior observations and prey selection in Glacier Bay National Park and Preserve. Each record (row) represents one prey item or in the case of an unsuccessful dive, no prey items- retrieved by foraging sea otters. The unit of analyses is the unique bout which is comprised of one or more dives and each dive is comprised of one or more rows of prey retrieved. Each record also holds additional information about the focal otter, bout, dive, and/or prey item. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author Defined
Attribute:
Attribute_Label: bout_id
Attribute_Definition:
Unique identifier of each sea otter foraging bout. Unique identifier 1 is assigned to the first observed bout. The next foraging bout, whether the same otter or a different otter receives unique identifier 2, etc. The bout identifier changes every time there is a break in the dive sequence. Observers identify unique bouts on their field data sheets, then data entry should ensure unique bout number within file. This data set contains various bout identification schemes have been used in the original spreadsheets and transferred to the compilation.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Bout identifiers are unique to each actual bout. Typically, they are comprised of a concatenation of bout date, observer initials, and a sequential number for the observer for the day.
Attribute:
Attribute_Label: study_cd
Attribute_Definition:
Unique identifier for the study. Sea otter foraging data is collected for a variety of studies at different locations.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: GLB
Enumerated_Domain_Value_Definition:
Glacier Bay (approximately 58.8946N, 136.8195W) before-after-control-impact study. Impact refers to sea otters, control refers to areas without sea otters or areas with a short timeline of sea otter presence. This study code is used for all sea otter foraging data collected in Glacier Bay National Park.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: bout_date
Attribute_Definition:
Date observations were made in the field, formatted as YYYYMMDD.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 19930417
Range_Domain_Maximum: 20190424
Attribute_Units_of_Measure: Date (YYYYMMDD)
Attribute:
Attribute_Label: start_time
Attribute_Definition:
Time of day (Alaska time) that observers began collecting foraging data for the recorded bout. Blank cells indicate that no data was collected.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 06:40
Range_Domain_Maximum: 21:12
Attribute_Units_of_Measure: hh:mm (24-hr)
Attribute:
Attribute_Label: end_time
Attribute_Definition:
Time of day (Alaska time) that the observer finished collecting foraging data for the recorded bout. Blank cells indicate that no data was collected.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6:58
Range_Domain_Maximum: 21:21
Attribute_Units_of_Measure: hh:mm (24-hr)
Attribute:
Attribute_Label: obs_lat
Attribute_Definition:
Latitude of the observer at the time of data collection during a bout. Blank cells indicate that no data was collected.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 58.37545875
Range_Domain_Maximum: 59.06636
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: obs_long
Attribute_Definition:
Longitude of the observer at the time of data collection during a bout. Blank cells indicate that no data was collected.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -136.77757
Range_Domain_Maximum: -135.56727222
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: otter_lat
Attribute_Definition:
Focal sea otter latitude for the bout, may be different for each dive (see 'dive_otter_lat') but often is one location for an entire bout. Blank cells indicate that no data was collected.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 58.122833
Range_Domain_Maximum: 59.06584
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: otter_long
Attribute_Definition:
Focal sea otter longitude for the bout, may be different for each dive (see 'dive_otter_long') but often is one location for an entire bout. Blank cells indicate that no data was collected.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -136.77783
Range_Domain_Maximum: -135.009906
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: sex_cd
Attribute_Definition: Sex code of focal sea otter observed during the foraging bout.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: u
Enumerated_Domain_Value_Definition: Unknown sex or sex not recorded.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: f
Enumerated_Domain_Value_Definition: Female sea otter
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: m
Enumerated_Domain_Value_Definition: Male sea otter
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: ageclass_cd
Attribute_Definition: Field estimate of age class of focal sea otter.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: u
Enumerated_Domain_Value_Definition: Unknown age-class or age-class not recorded.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: a
Enumerated_Domain_Value_Definition:
Adult, approximately 3-10 year old sea otter based on size, grizzle, behavior.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: o
Enumerated_Domain_Value_Definition:
Aged Adult, geriatric sea otter, approximately older than 10 years based on appearance.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: j
Enumerated_Domain_Value_Definition:
Juvenile sea otter, older than a weanling or pup, but not yet subadult, approximately 6 months to 1 year based on appearance and behavior.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: s
Enumerated_Domain_Value_Definition:
Subadult, independent sea otter, but not yet full grown or having full adult abilities.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: p
Enumerated_Domain_Value_Definition:
Pup sea otter, still dependent and with mother. This age designation is only used if the pup is the focal otter that feeding observations are being collected on. Approximately less than 8 months based on appearance and behavior.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: pupsize_cd
Attribute_Definition:
A code indicating if the focal sea otter had a pup and if so, what was the general size of the pup? Blank cells indicate that no data was collected or for unknown sex, male otters, or females too young to bear pups. The code "u" is only used if the pup status of an adult female is unknown.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: u
Enumerated_Domain_Value_Definition:
Unknown, undetermined, or not recorded for adult, female focal sea otter.
Enumerated_Domain_Value_Definition_Source: author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: y
Enumerated_Domain_Value_Definition:
Yes, focal female sea otter does have a dependent pup but the age of the pup was not determined or recorded.
Enumerated_Domain_Value_Definition_Source: author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: n
Enumerated_Domain_Value_Definition: No, focal female sea otter does not have a dependent pup.
Enumerated_Domain_Value_Definition_Source: author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: l
Enumerated_Domain_Value_Definition:
Focal sea otter has a large pup. Pup size based on visual appearance and behaviors.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: m
Enumerated_Domain_Value_Definition:
Focal sea otter has a medium size pup. Pup size estimate based on visual appearance and behavior.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: s
Enumerated_Domain_Value_Definition:
Focal sea otter has a small pup. Pup size estimate based on visual observations and behaviors.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: d
Enumerated_Domain_Value_Definition: Focal sea otter has a dead pup.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: territorial_male_flg
Attribute_Definition:
Flag indicating if male focal sea otter is a territorial male or not. Not territorial also includes unknown territorial status. This is not easy to determine in unmarked otters, but can sometimes be deduced by the otter's behavior patterns, such as patrolling, dominance over other males, consorting with females, and checking on all the otters in the area. Blank cells indicate that the sea otter was identified as female or unknown sex.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: Not a territorial male or unknown status
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Territorial male
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: region_cd
Attribute_Definition: Largest spatial category for sea otter foraging data.
Attribute_Definition_Source: Gorbics and Bodkin 2001
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SEA
Enumerated_Domain_Value_Definition: Southeast Alaska
Enumerated_Domain_Value_Definition_Source: Gorbics and Bodkin 2001
Attribute:
Attribute_Label: area_cd
Attribute_Definition:
A smaller geographic designation than region for sea otter foraging data.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: GLBA
Enumerated_Domain_Value_Definition:
Glacier Bay National Park and Preserve (approximately 58.8902N, 136.8186W).
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SICY
Enumerated_Domain_Value_Definition:
Waters of Icy Strait, south of the main entrance to Glacier Bay National Park and Preserve (approximately 58.2733N, 135.6507W).
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: site_name
Attribute_Definition:
Smallest designated spatial scale. In 2019, authors divided Glacier Bay into broad sites and categorized each sea otter foraging bout. See 'GLBA_SEOT_forageSites_lumped2024.jpg' provided with this data release package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Adams
Enumerated_Domain_Value_Definition: Adams Inlet (approximately 58.8806N, 135.9387W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Bartlett
Enumerated_Domain_Value_Definition:
Bartlett Cove vicinity (approximately 58.4533N, 135.9203W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Berg
Enumerated_Domain_Value_Definition: Berg Bay (approximately 58.5165N, 136.1704W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Boulder
Enumerated_Domain_Value_Definition:
Boulder Island and Reef vicinity (approximately 58.5686N, 135.9952W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Caroline/Garforth
Enumerated_Domain_Value_Definition:
Caroline Shoal and Garforth Island vicinity (approximately 58.7739N, 136.1065W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Carolus
Enumerated_Domain_Value_Definition:
Point Carolus vicinity (approximately 58.3639N, 136.0529W) in GLBA area although some sea otter locations may technically be beyond the border of Glacier Bay National Park and preserve.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Drake/Francis
Enumerated_Domain_Value_Definition:
Drake and Francis Islands vicinity (approximately 58.6575N, 136.2565W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Dundas
Enumerated_Domain_Value_Definition: Dundas Bay (approximately 58.3462N, 136.3417W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Fingers
Enumerated_Domain_Value_Definition: Fingers Bay (approximately 58.5785N, 136.1985W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Flapjack
Enumerated_Domain_Value_Definition:
Flapjack reef vicinity (approximately 58.6153N, 136.0202W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Geikie
Enumerated_Domain_Value_Definition: Geikie Inlet (approximately 58.6155N, 136.4638W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Gustavus
Enumerated_Domain_Value_Definition:
Point Gustavus vicinity (approximately 58.3809N, 135.9216W) in GLBA area, although some otter locations may technically be beyond the border of Glacier Bay National Park and preserve.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Inner Beardslee
Enumerated_Domain_Value_Definition:
Eastern portion of the Beardslee Island vicinity (approximately 58.5334N, 135.8666W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Leland
Enumerated_Domain_Value_Definition: Leland Island (approximately 58.6499N, 135.9834W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Marbles
Enumerated_Domain_Value_Definition:
North and south Marble Islands (approximately 58.6567N, 136.0565W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Muir
Enumerated_Domain_Value_Definition: Muir Inlet (approximately 59.0587N, 136.2862W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Outer Beardslee
Enumerated_Domain_Value_Definition:
Western portion of the Beardslee Island vicinity (approximately 58.5174N, 135.9486W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Rush/Ripple
Enumerated_Domain_Value_Definition:
Along the western shore of the lower bay, in the vicinity of Rush Point and Ripple Cove (approximately 58.4722N, 136.0780W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Russel/Reid
Enumerated_Domain_Value_Definition:
Russel Island and Reid Inlet vicinity (approximately 58.8935N, 136.7686W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sandy/Sturgess
Enumerated_Domain_Value_Definition:
Sandy Cove and Sturgess Island vicinity (approximately 58.7082N, 136.0211W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Scidmore/Hugh Miller
Enumerated_Domain_Value_Definition:
Scidmore Bay and Hugh Miller Charpentier Inlets (approximately 58.7653N, 136.5710W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sita/Strawberry
Enumerated_Domain_Value_Definition:
Sita reef and Strawberry Island vicinity (approximately 58.5209N, 136.0221W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Willoughby
Enumerated_Domain_Value_Definition:
Willoughby Island vicinity (approximately 58.6058N, 136.1533W) in GLBA area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Althorp
Enumerated_Domain_Value_Definition:
Waters, islands, and islets in Port Althorp (approximately 58.1488N, 136.3391W) in the SICY area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Inian
Enumerated_Domain_Value_Definition:
Inian Islands vicinity (approximately 58.2439N, 136.3476W) in SICY area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Idaho
Enumerated_Domain_Value_Definition:
Waters, islands, and islets in Idaho Inlet (approximately 58.1702N, 136.2206W) in the SICY area.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: specific_location_txt
Attribute_Definition: The smallest spatial scale at which foraging data are defined.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
The smallest spatial scale at which foraging data are defined. The list of specific locations will vary by observer. It is recommended to use latitude and longitude or region/area/site for grouping in analyses rather than this field.
Attribute:
Attribute_Label: visibility_cd
Attribute_Definition:
Code for visibility, in this data a term for the observer's confidence in their observations. The term is a subjective, bout specific, assessment of items that affect an observer's ability to collect foraging data: distance of focal otter, elevation of observer, precipitation, surf/surge/chop, is the otter surfacing in kelp or amongst wash rocks, light level and quality, and any other conditions that are impacting the data collection effort.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: un
Enumerated_Domain_Value_Definition: Unknown or unrecorded visibility
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ex
Enumerated_Domain_Value_Definition: Excellent visibility
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: vg
Enumerated_Domain_Value_Definition: Very good visibility
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: go
Enumerated_Domain_Value_Definition: Good visibility
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: fa
Enumerated_Domain_Value_Definition: Fair visibility
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: po
Enumerated_Domain_Value_Definition: Poor visibility
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: bout_comment_txt
Attribute_Definition:
Text field containing comments about the foraging bout. Blank cells indicate that no comments were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Many notes are made here but most common are reasons for ending a bout, information about the focal otter or location.
Attribute:
Attribute_Label: dive_otter_lat
Attribute_Definition:
Focal sea otter latitude for the dive, which may be different for each dive but often is one location for an entire bout (see 'otter_lat'). Blank cells indicate that no data was collected.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 58.159317
Range_Domain_Maximum: 59.06584
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: dive_otter_long
Attribute_Definition:
Focal sea otter longitude for the dive, which may be different for each dive but often is one location for an entire bout (see 'otter_long'). Blank cells indicate that no data was collected.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -136.99945
Range_Domain_Maximum: -135.8625
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: dive_num
Attribute_Definition:
Sequential integer number assigned to each dive within a bout. Each bout begins with its own dive number 1. The current protocol calls for recording 20 dives within each bout but often the bout ends early because the focal otter leaves the vicinity, finishes feeding or is interrupted by another animal. Bouts may have more than 20 dives because some foraging protocols recommend watching all dives.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 66
Attribute_Units_of_Measure: integer
Attribute:
Attribute_Label: dive_time
Attribute_Definition:
Time in seconds spent by focal sea otter searching for or retrieving prey, underwater or off emergent rocks or in kelp canopy. Dive time is recorded even if no prey is retrieved. Blank cells indicate that no data was collected.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 335
Attribute_Units_of_Measure: seconds
Attribute:
Attribute_Label: surface_time
Attribute_Definition:
Surface time, time in seconds that focal otter spends on surface, including time spent handling prey, consuming prey, grooming, interacting with other non-focal otters, moving locations, etc. Surface times in excess of 600 seconds, if not directly associated with feeding, generate the end of the bout. Blank cells indicate that no data was collected.
Attribute_Definition_Source: author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 962
Attribute_Units_of_Measure: seconds
Attribute:
Attribute_Label: success_cd
Attribute_Definition:
A code indicating if a sea otter successfully retrieved prey after a dive. In some other foraging data sets this is called 'dive outcome'.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: u
Enumerated_Domain_Value_Definition: Unknown, undetermined, or unrecorded dive outcome.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: y
Enumerated_Domain_Value_Definition: Yes, successful retrieval of prey.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: n
Enumerated_Domain_Value_Definition: No, not successful prey retrieval.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: c
Enumerated_Domain_Value_Definition:
Carryover, a prey item that was dropped or partially consumed was re-retrieved.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: t
Enumerated_Domain_Value_Definition:
Travel, observer decides dive was a travel dive not a foraging dive.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: x
Enumerated_Domain_Value_Definition:
Non-feeding dive, observer decides dive was not a feeding dive. This often occurs when a focal otter is interrupted by another otter.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: i
Enumerated_Domain_Value_Definition:
Non-feeding dive, focal otter is interacting with another otter.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: dive_comment_txt
Attribute_Definition:
Any comments the observer feels are relevant to the specific dive. There are other comment fields for the bout and individual prey items. Blank cells indicate that no comments were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Any comments the observer feels are relevant to the specific dive.
Attribute:
Attribute_Label: preytype_cd
Attribute_Definition:
Three-letter code for prey item retrieved on successful or carry over dives. Blank cells indicate that all dives that are not foraging dives (travel, unknown, interacting, evasive) or are unsuccessful or unknown success. All successful foraging and carryover dives should have a prey code, including "uni" for unidentified prey.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Three-letter code for prey item retrieved on successful or carry over dives. See table 'GLBA_SEOT_forage_preyTaxonomy.csv' included with this data release for a list of all prey species type codes.
Attribute:
Attribute_Label: prey_qty
Attribute_Definition:
Number of each prey item retrieved by the sea otter. Blank cells indicate that no data was recorded, it was a non-foraging dive, or the dive was unsuccessful.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 135
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: preysize_cd
Attribute_Definition:
Estimated size, relative to otter paw width, of each prey item. Analysis steps translate the size code to actual millimeters based on averages of paw measurements of captured otters. See 'GLBA_SEOT_preySizeCode.jpg' for a visual explanation of size codes. Blank cells indicate no data for non-foraging or unsuccessful dives.
Attribute_Definition_Source: Bodkin 2011
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1a
Enumerated_Domain_Value_Definition:
Prey less than or equal to one-third of the paw width of the focal otter.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1b
Enumerated_Domain_Value_Definition:
Prey larger than one-third paw width but smaller than the larger third of the paw.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1c
Enumerated_Domain_Value_Definition:
Prey that is larger than two-thirds of the paw width of the focal otter, but less than or equal to one full paw width.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2a
Enumerated_Domain_Value_Definition:
Prey larger than one full paw width but less than or equal to one and one-third of the paw width of the focal otter.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2b
Enumerated_Domain_Value_Definition:
Prey larger than one and one-third paw width but smaller than the larger one and a third of the paw width.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2c
Enumerated_Domain_Value_Definition:
Prey that is larger than one and two-thirds of the paw width of the focal otter, but less than or equal to two full paw widths.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3a
Enumerated_Domain_Value_Definition:
Prey larger than two full paw widths but less than or equal to two and one-third of the paw width of the focal otter.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3b
Enumerated_Domain_Value_Definition:
Prey larger than two and one-third paw widths but smaller than the two and two-thirds of the paw width.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3c
Enumerated_Domain_Value_Definition:
Prey that is larger than two and two-thirds of the paw width of the focal otter, but less than or equal to three full paw widths.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4z
Enumerated_Domain_Value_Definition:
Prey larger than three paw widths of the focal otter; observer should try to estimate prey size in centimeters if possible.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 9z
Enumerated_Domain_Value_Definition: Unknown prey size
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1z
Enumerated_Domain_Value_Definition:
Prey is smaller than 1 paw width but observer could not distinguish further. Also used for data from older studies when a, b, c categories were not in use.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2z
Enumerated_Domain_Value_Definition:
Prey is smaller than 2 paw widths but observer could not distinguish further. Also used for data from older studies when a, b, c categories were not in use.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3z
Enumerated_Domain_Value_Definition:
Prey is smaller than 3 paw widths but observer could not distinguish further. Also used for data from older studies when a, b, c categories were not in use.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: prey_size_cm
Attribute_Definition:
For large prey items, observers may choose to estimate the overall largest size in centimeters of the item. 'Prey_size_cd' should be blank if 'pre_size_cm' is used.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 14
Range_Domain_Maximum: 155
Attribute_Units_of_Measure: centimeter
Attribute:
Attribute_Label: not_eaten_pct
Attribute_Definition:
Proportion of prey not consumed by the focal sea otter. Blank cells indicate no data for non-foraging or unsuccessful dives.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.02
Range_Domain_Maximum: 1.0
Attribute_Units_of_Measure: decimal fraction
Attribute:
Attribute_Label: not_eaten_reason_cd
Attribute_Definition:
A description of why the prey wasn't consumed by the focal sea otter. Blank cells indicate that no data was recorded or all the prey was consumed.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: p
Enumerated_Domain_Value_Definition:
Prey provided to pup, prey not consumed by the focal otter was given to or taken by the focal otter's pup.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: s
Enumerated_Domain_Value_Definition:
Stolen, the prey not consumed by the focal otter was stolen by another otter that is not the pup of the focal otter
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: d
Enumerated_Domain_Value_Definition:
Dropped, prey not consumed by the focal otter that is dropped rather than stolen or given away
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: u
Enumerated_Domain_Value_Definition: Unknown reason why an otter did not fully consume a prey item.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: handling_time
Attribute_Definition:
Handling time, the amount of time in seconds that the focal sea otter uses to manipulate and consume each prey item. Usually equal to surface time unless the otter spends more than 10 seconds grooming or engaging in activity other than prey handling and consumption. 'Handling_time' is set to a blank cell unless the observer records a specific handling time on the field data sheet.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 510
Attribute_Units_of_Measure: seconds
Attribute:
Attribute_Label: prey_comment_txt
Attribute_Definition:
Observer comments about a specific prey item. Blank cells indicate that no comments were recorded.
Attribute_Definition_Source: author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Observer comments about a specific prey item.
Detailed_Description:
Entity_Type:
Entity_Type_Label: GLBA_SEOT_preySizeCode.jpg
Entity_Type_Definition:
Graphic showing the size of sea otter prey in relation to the average sea otter paw size.
Entity_Type_Definition_Source: Author Defined
Detailed_Description:
Entity_Type:
Entity_Type_Label: GLBA_SEOT_forageSites.jpg
Entity_Type_Definition:
Graphic showing the location of sea otter foraging bout observations from 1993-2019. Sites located in Icy Strait are not shown on the graphic.
Entity_Type_Definition_Source: Author Defined
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, PNG
Format_Information_Content:
Data are distributed in a Zip package containing data in CSV and PNG formats 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/P9T6UB5G
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20240321
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 Thu Mar 21 15:06:25 2024