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These data are estimates of den emergence date, den site departure dates, and duration at den sites as well as post-emergence observations for female polar bears sampled in the southern Beaufort Sea subpopulation 1985-2016 and the Chukchi Sea subpopulation 2008-2017. The data were used to better understand the importance of time spent at the den site post-emergence. Emergence dates and departure dates were determined using collar temperature sensor data.
Tags: Alaska,
Animals/Vertebrates,
Bears,
Beaufort Sea,
Behavior, All tags...
Biota,
Carnivores,
Chukchi Sea,
Coastal ecosystems,
Dens,
Environment,
Mammals,
Marine ecosystems,
Marine mammals,
Phenology,
Polar Bear,
Species life history,
Threatened species,
USGS:ASC591,
Ursus maritimus,
Wildlife, Fewer tags
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This dataset includes measures collected on polar bears captured in the Chukchi and Beaufort Seas, 1981-2017 by the U.S. Geological Survey and U.S. Fish and Wildlife Service. Data collected include body length, body mass, axillary girth, skull width and tail lengths. Bears were also aged as described in the methods. For some bears, an adipose tissue sample was collected and percent lipid content was measured, percent body fat was measured via bioelectrical impedance analysis, and/or recent feeding behavior was assessed via gut palpitation or blood urea and creatinine levels, all of which are further described in the methods.
Tags: Alaska,
Animal behavior,
Animals/Vertebrates,
Bears,
Beaufort Sea, All tags...
Biota,
Carnivores,
Chukchi Sea,
Coastal ecosystems,
Consumer Behavior,
Environment,
Mammals,
Marine ecosystems,
Marine mammals,
Species Life History,
Threatened Species,
USGS:ASC287,
Wildlife, Fewer tags
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This data set documents the dry mass energy density, distribution, and stomach contents of age-0 chum salmon (Oncorhynchus keta) captured in the Kuskokwim Bay estuary in May and June 2004. The analysis of this data was published in Burrill et al. 2018 (DOI :10.1007/s00300-018-2297-2.).
Categories: Data;
Tags: Alaska,
Bering Sea,
Kuskokwim Bay,
anadromous fish,
biota, All tags...
coastal zone,
estuarine ecosystems,
food web,
migratory species,
ontogeny,
stomach contents, Fewer tags
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This dataset consists of one table with annual counts from population plots of Black-legged Kittiwakes and Common Murres at two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska.
Categories: Data;
Tags: Alaska,
Animals/Vertebrates,
Biota,
Birds,
Black-legged Kittiwakes, All tags...
Breeding sites,
Coastal ecosystems,
Common Murres,
Cook Inlet,
Environment,
Gulf of Alaska,
Indicator species,
Kachemak Bay,
Marine ecosystems,
Population dynamics,
Rissa tridactyla,
Uria aalge,
Waders/Gulls/Auks and Allies,
Wildlife, Fewer tags
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This dataset provides information on fish species composition and their diet information for 16 lakes and 16 ponds at two locations on the central Arctic Coastal Plain, Alaska. In one table, we provide the presence of fish species and the total species count for each lake or pond sampled. This table also includes metrics of surface water connectivity to the stream network. In a second table, stomach content information is provided for fish collected during summer sampling periods (late June to mid-August) over three years (2011–2013). The third table includes stable carbon isotope and stable nitrogen isotope signature data for fish species and snails (the baseline organism) from 16 water bodies at one study location...
Categories: Data;
Tags: Alaska,
Arctic,
Arctic Coastal Plain,
Diet,
Isotopes, All tags...
North Slope Borough,
Species composition,
Species richness,
Stomach contents,
biota,
inlandWaters,
isotopic analysis,
prey, Fewer tags
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