Walrus Monthly Foraging Utilization Distribution in the Chukchi Sea: 2008-2011. Version 1.0 ...

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...

Full description

Bibliographic Details
Main Authors: Jay, C., Fischbach, A.
Format: Dataset
Language:English
Published: UCAR/NCAR - Earth Observing Laboratory 2013
Subjects:
oceans
Arctic
Biology
Ships
Water-based Platforms > Vessels > Surface > Ships > > 1bb21d0f-bf48-42b5-8e09-cc0d58407e4a
GPS Receivers
Earth Remote Sensing Instruments > Passive Remote Sensing > Positioning/Navigation > GPS > GPS RECEIVERS > > 029feed6-79dc-4316-b8ac-be8f1e557f89
EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES
EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > USE/FEEDING HABITATS
EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > RANGE CHANGES
PacMARS
Pacific Marine Arctic Regional Synthesis
Chukchi Sea
Pacific
Chukchi
Odobenus rosmarus
Sea ice
walrus*
Online Access:https://dx.doi.org/10.5065/d6kw5d2x
https://data.eol.ucar.edu/dataset/255.012
Description
Summary: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 ...

Similar Items