The polar regions in a 2 C warmer world
Over the past decade, the Arctic has warmed by 0.75° C, far outpacing the global average,
while Antarctic temperatures have remained comparatively stable. As Earth approaches 2° …
while Antarctic temperatures have remained comparatively stable. As Earth approaches 2° …
Towards a mechanistic understanding of the responses of large terrestrial mammals to heat and aridity associated with climate change
In the face of climate change, the life history traits of large terrestrial mammals will prevent
them from adapting genetically at a sufficient pace to keep track with changing …
them from adapting genetically at a sufficient pace to keep track with changing …
High-energy, high-fat lifestyle challenges an Arctic apex predator, the polar bear
Regional declines in polar bear (Ursus maritimus) populations have been attributed to
changing sea ice conditions, but with limited information on the causative mechanisms. By …
changing sea ice conditions, but with limited information on the causative mechanisms. By …
Fasting season length sets temporal limits for global polar bear persistence
Polar bears (Ursus maritimus) require sea ice for capturing seals and are expected to
decline range-wide as global warming and sea-ice loss continue,. Estimating when different …
decline range-wide as global warming and sea-ice loss continue,. Estimating when different …
A unifying, eco‐physiological framework for animal dormancy
Various animals across the tree of life express some form of programmed dormancy (eg
hibernation, diapause) to maximize fitness in highly seasonal environments. The integrated …
hibernation, diapause) to maximize fitness in highly seasonal environments. The integrated …
Polar bear energetic and behavioral strategies on land with implications for surviving the ice-free period
Declining Arctic sea ice is increasing polar bear land use. Polar bears on land are thought to
minimize activity to conserve energy. Here, we measure the daily energy expenditure (DEE) …
minimize activity to conserve energy. Here, we measure the daily energy expenditure (DEE) …
Rapid environmental change drives increased land use by an Arctic marine predator
TC Atwood, E Peacock, MA McKinney, K Lillie… - PLoS …, 2016 - journals.plos.org
In the Arctic Ocean's southern Beaufort Sea (SB), the length of the sea ice melt season (ie,
period between the onset of sea ice break-up in summer and freeze-up in fall) has increased …
period between the onset of sea ice break-up in summer and freeze-up in fall) has increased …
Increased land use by Chukchi Sea polar bears in relation to changing sea ice conditions
Recent observations suggest that polar bears (Ursus maritimus) are increasingly using land
habitats in some parts of their range, where they have minimal access to their preferred prey …
habitats in some parts of their range, where they have minimal access to their preferred prey …
Trends in body condition in polar bears (Ursus maritimus) from the Southern Hudson Bay subpopulation in relation to changes in sea ice
ME Obbard, MRL Cattet, EJ Howe, KR Middel… - Arctic …, 2016 - cdnsciencepub.com
Sea ice is declining over much of the Arctic. In Hudson Bay the ice melts completely each
summer, and advances in break-up have resulted in longer ice-free seasons. Consequently …
summer, and advances in break-up have resulted in longer ice-free seasons. Consequently …
Migratory response of polar bears to sea ice loss: to swim or not to swim
Migratory responses to climate change may vary across and within populations, particularly
for species with large geographic ranges. An increase in the frequency of long‐distance …
for species with large geographic ranges. An increase in the frequency of long‐distance …