Non-linear effect of sea ice: Spectacled Eider survival declines at both extremes of the ice spectrum.

ABSTRACT: Understanding the relationship between environmental factors and vital rates is an important step in predicting a species' response to environmental change. Species associated with sea ice are of particular concern because sea ice is projected to decrease rapidly in polar environments with continued levels of greenhouse gas emissions. The relationship between sea ice and the vital rates of the Spectacled Eider, a threatened species that breeds in Alaska and Russia and winters in the Bering Sea, appears to be complex. While severe ice can impede foraging for benthic prey, ice also suppresses wave action and provides a platform on which eiders roost, thereby reducing thermoregulation costs. We analyzed a 23-year mark-recapture dataset for Spectacled Eiders nesting on Kigigak Island in wester

SUBMITTER: Christie KS 

PROVIDER: S-EPMC6303746 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature