Climate change and polar bears – TRU Newsroom
Dr. Andy Derocher of the University of Alberta presents Climate change and polar bear life history vulnerabilities as part of the Environmental Sciences Seminar Series.
Habitat loss is the major threat facing ursids across their range. In the Arctic, climate change has fundamentally altered and degraded polar bear (Ursus maritimus) habitat with projected changes predicted to result in population extirpations.
The effects of climate change on polar bears are well understood because they have a long history of research and monitoring. Climate change affects polar bear life history at several critical life history points.
Energy stores are the primary affected link and the key to understanding the effects of habitat loss lies in the balance between energy intake and energy use. Energy intake is mediated by the duration of ice cover, prey abundance, and prey vulnerability.
Energy use is influenced by growth, reproduction, and maintenance costs that are directly influenced by habitat conditions and ice-free period duration.
While polar bears are still abundant across the Arctic, their future is dependent on sea ice. I will review the ecology of polar bears within the context of climate change and explore why this species has become the “poster-species” for a warming world.
Mon, Jun 14, 2021 at 4:05 pm - David Suzuki posted on their blog: For climate’s sake, save the peat!
Sat, Jun 12, 2021 at 9:00 am - Doug Smith posted on their blog: On the Embleton Trails – Kamloops Trails
Thu, Jun 10, 2021 at 6:02 pm - David Suzuki posted on their blog: Fossil fuel industry faces an overdue reckoning
Wed, Jun 9, 2021 at 9:00 am - Doug Smith posted on their blog: Island Lake Loop – Kamloops Trails
Sun, Jun 6, 2021 at 8:00 am - Doug Smith posted on their blog: Lac du Bois Loop Route
Fri, Jun 4, 2021 at 3:25 pm - Darryl Schmidt posted a reply on Grand Finale of the Kamloops Symphony’s “Running The Symphony” Initiative
Thu, Jun 3, 2021 at 9:00 am - Doug Smith posted on their blog: Ragged Red Ridge Reverse Route
Tue, Jun 1, 2021 at 1:08 pm - David Suzuki posted on their blog: Sun rises on renewable energy and storage
Mon, May 31, 2021 at 12:46 pm - Deniel Lene Enriquez created a new Profile
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Wed Jul 14 Renovate Smart Kamloops Virtual Home Energy Performance Workshop
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