• Publications
  • Influence
Quantifying the sensitivity of Arctic marine mammals to climate-induced habitat change.
We review seven Arctic and four subarctic marine mammal species, their habitat requirements, and evidence for biological and demographic responses to climate change. We then describe a pan-ArcticExpand
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Phylogeny and divergence of the pinnipeds (Carnivora: Mammalia) assessed using a multigene dataset
BackgroundPhylogenetic comparative methods are often improved by complete phylogenies with meaningful branch lengths (e.g., divergence dates). This study presents a dated molecular supertree for allExpand
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Arctic marine mammal population status, sea ice habitat loss, and conservation recommendations for the 21st century
Abstract Arctic marine mammals (AMMs) are icons of climate change, largely because of their close association with sea ice. However, neither a circumpolar assessment of AMM status nor a standardizedExpand
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Climate warming is predicted to reduce the extent of ice cover in the Arctic and, within the Hudson Bay region, the annual ice may be significantly decreased or entirely lost in the foreseeableExpand
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Intraspecific Variation in Home Range Overlap with Habitat Quality: A Comparison among Brown Bear Populations
We developed a conceptual model of spatial organization in vertebrates based upon changes in home range overlap with habitat quality. We tested the model using estimates of annual home ranges ofExpand
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Effect of energy availability, seasonality, and geographic range on brown bear life history
Life-history theory allows predictions of how changes in environmental selection pressures along a species' geographic distribution result in discrete shifts in life-history traits. We tested forExpand
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Stable isotopes and trace elements as indicators of diet and habitat use in cetaceans: predicting errors related to preservation, lipid extraction, and lipid normalization
Accurately predicting errors related to preservation, lipid extraction, and lipid normal- ization on chemical tracers would enable the use of archived samples in long-term studies of trophic ecologyExpand
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Loss of Arctic sea ice causing punctuated change in sightings of killer whales (Orcinus orca) over the past century.
Killer whales (Orcinus orca) are major predators that may reshape marine ecosystems via top-down forcing. Climate change models predict major reductions in sea ice with the subsequent expectation forExpand
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Temporal variations in Hudson Bay ringed seal (Phoca hispida) life-history parameters in relation to environment
Abstract We related temporal variation in the environment to demographic parameters and body condition of ringed seals (Phoca hispida) in Hudson Bay, near the southern limit of the species'Expand
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Killer whales (Orcinus orca) in the Canadian Arctic: Distribution, prey items, group sizes, and seasonality
Killer whales (Orcinus orca) have a global distribution, but many high-latitude populations are not well studied. We provide a comprehensive review of the history and ecology of killer whales in theExpand
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