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Predicting movements of female polar bears between summer sea ice foraging habitats and terrestrial denning habitats of Alaska in the 21st century: Proposed methodology and pilot assessment

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Scott Bergen, George M. Durner, David C. Douglas, and Steven C. Amstrup, 2007, Predicting movements of female polar bears between summer sea ice foraging habitats and terrestrial denning habitats of Alaska in the 21st century: Proposed methodology and pilot assessment: Administrative Report.

Summary

Polar bears (Ursus maritimus) require the relative warmth and stability afforded by snow dens for successful reproduction. Pregnant bears must travel from foraging habitats on the sea ice to land in autumn to establish winter dens. Data of sea ice extent and composition from satellite-acquired passive microwave (PMW) imagery show a reduction in summer sea ice extent throughout the Arctic from 1979-2006. Additionally, General Circulation Models (GCM) predict that Arctic sea ice extent will continue to diminish throughout the 21st century. Greater energetic demands will be placed on pregnant polar bears in the future if they travel greater distances from summer forage habitats to traditional denning habitats on land. We developed an [...]

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Harvested on Thu Jun 30 04:21:40 MDT 2016 from MODS XML Service

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Type Scheme Key
local-index unknown 70174083
local-pk unknown 70174083
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.3133/70174083
series unknown Administrative Report

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citationTypeReport
journalAdministrative Report
languageEnglish
parts
typePublication Place
valueReston, VA

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