Catalogue | Flanders Marine Institute

Flanders Marine Institute

Platform for marine research


This search interface gives access to the reference database of VLIZ, an extensive collection of (inter)national marine scientific literature references.

You can limit your search to the Belgian marine literature only or to the VLIZ Library catalogue only by checking the 'VLIZ Library' box.

New search
[ report an error in this record ]basket (0): add | show Print this page

High-energy, high-fat lifestyle challenges an Arctic apex predator, the polar bear
Pagano, A.M.; Durner, G.M.; Rode, K.D.; Atwood, T.C.; Atkinson, S.N.; Peacock, E.; Costa, D.P.; Owen, M.A.; Williams, T.M. (2018). High-energy, high-fat lifestyle challenges an Arctic apex predator, the polar bear. Science (Wash.) 359(6375): 568-572.
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075, more
Peer reviewed article  

Available in  Authors 

Authors  Top 
  • Pagano, A.M.
  • Durner, G.M.
  • Rode, K.D.
  • Atwood, T.C.
  • Atkinson, S.N.
  • Peacock, E.
  • Costa, D.P.
  • Owen, M.A.
  • Williams, T.M.

    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 simultaneously measuring field metabolic rates, daily activity patterns, body condition, and foraging success of polar bears moving on the spring sea ice, we found that high metabolic rates (1.6 times greater than previously assumed) coupled with low intake of fat-rich marine mammal prey resulted in an energy deficit for more than half of the bears examined. Activity and movement on the sea ice strongly influenced metabolic demands. Consequently, increases in mobility resulting from ongoing and forecasted declines in and fragmentation of sea ice are likely to increase energy demands and may be an important factor explaining observed declines in body condition and survival.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors