Identification

Title

Walrus Monthly Foraging Utilization Distribution in the Chukchi Sea: 2008-2011 [Jay]

Alternative title(s)

255.012

Abstract

This dataset describes Pacific walrus (Odobenus rosmarus divergens) utilization of the Chukchi sea by tracking walruses and their hourly foraging behavior from June through November using satellite-linked tags during years of sparse sea ice (2008-2011). To estimate the density of walrus foraging on a monthly basis, a movement-based kernel density estimator application was used to predict walrus utilization over a 5 km resolution grid encompassing the Chukchi Sea. It generated utilization density contours from the gridded utilization distribution. The utilization density contours are provided for environmental planning purposes and may only be understood within the context of the published manuscript. This dataset is part of the Pacific Marine Arctic Regional Synthesis (PacMARS) Project. Data is structured by month, which ranges from June through November. Within each month walrus foraging utilization distributions were estimated by weighting the kernel density distribution by the amount of time spent foraging during each recorded track segment. Presented are contour intervals ranging from 10th to 95th percentile in the geographically referenced Portable Network Graphic files and shape files referenced below in the related links.

Resource type

dataset

Resource locator

https://data.eol.ucar.edu//dataset/255.012

protocol: https

name: Walrus Monthly Foraging Utilization Distribution in the Chukchi Sea: 2008-2011 [Jay] homepage

description: Dataset homepage

https://data.eol.ucar.edu/cgi-bin/codiac/fgr_form/id=255.012

protocol: https

name: Walrus Monthly Foraging Utilization Distribution in the Chukchi Sea: 2008-2011 [Jay] Data Order Form

description: Dataset order request form. Data files are made available via FTP.

function: order

Unique resource identifier

code

255.012

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

oceans

Keywords

Keyword set

keyword value

dataset

originating controlled vocabulary

title

reference date

date type

revision

effective date

2014-10-16

Keyword set

keyword value

Ships

Keyword set

keyword value

Biology

Ecology

Arctic

Mammals

Keyword set

keyword value

EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > USE/FEEDING HABITATS

EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > RANGE CHANGES

EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES

originating controlled vocabulary

title

reference date

date type

revision

effective date

2018-02-27

Geographic location

West bounding longitude

172.00000

East bounding longitude

-156.00000

North bounding latitude

75.00000

South bounding latitude

65.00000

Temporal reference

Temporal extent

Begin position

2008-06-01T00:00:00Z

End position

2011-11-30T23:59:00Z

Dataset reference date

date type

publication

effective date

2013-02-25T15:50:27Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

none

Limitations on public access

none

Responsible organisations

Responsible party

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

name: homepage

responsible party role

pointOfContact

Responsible party

contact position

Project Leader

organisation name

USGS Alaska Science Center

full postal address

4210 University Dr.

Anchorage

99508

USA

telephone number

(907) 786-7145

email address

cjay@usgs.gov

responsible party role

pointOfContact

Responsible party

contact position

Project Leader

organisation name

USGS Alaska Science Center

full postal address

4210 University Dr.

Anchorage

99508

USA

telephone number

(907) 786-7145

email address

cjay@usgs.gov

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

EOL Data Support

organisation name

UCAR/NCAR - Earth Observing Laboratory

full postal address

PO Box 3000

Boulder

80307-3000

email address

datahelp@eol.ucar.edu

web address

https://data.eol.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata date

2024-03-08T22:01:26Z

Metadata language