![]() We estimated the probability of juvenile annual survival as 0.63 (95% credible interval : 0.39-0.87) and adult female annual survival as 0.90 (95% CrI: 0.74-1.00). ![]() We developed a Bayesian multievent mark-recapture model to estimate walrus survival and abundance while accounting for age misclassification. We conducted a 5 yr genetic mark-recapture study to estimate demographic parameters for the Pacific walrus. In the Bering and Chukchi Seas, the Pacific walrus Odobenus rosmarus divergens is one species that could be impacted by rapid environmental change, and thus, population assessments are needed to monitor changes in the status of this ecologically and culturally important marine mammal. Sea ice loss will impact many species through altered spatial and temporal availability of resources. Arctic marine ecosystems are undergoing rapid physical and biological change associated with climate warming and loss of sea ice.
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