POLAR BEAR DIETS AND ARCTIC MARINE FOOD WEBS: INSIGHTS FROM FATTY ACID ANALYSIS

By G. Thiemann, S. Iverson, Ian Stirling. 2008

339 citations recorded by the source corpus.

Subfields: Atmospheric Science, Ecology

View Paper: https://www.semanticscholar.org/paper/e3e99b042aded25678255f121f39a29b81f081b6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atmospheric Science

1. A. Derocher
2. Ian Stirling
3. Kit M. Kovacs
4. C. Lydersen
5. Steven C. Amstrup
6. J. Aars
7. S. Iverson
8. S. Moore

In Ecology

1. Ian Stirling
2. S. Iverson
3. A. Derocher
4. Steven C. Amstrup
5. Kit M. Kovacs
6. C. Lydersen
7. S. Moore
8. J. Aars

Citations in the corpus

• The prevalence of Toxoplasma gondii in polar bears and their marine mammal prey: evidence for a marine transmission pathway? (2010, background): “An adult bearded seal is typically heavier than a female polar bear, and a Canadian study showed that bearded seals were more commonly preyed upon by male polar bears compared to females (Thiemann et al. 2008).”
• Sexual dimorphism and the mating ecology of polar bears (Ursus maritimus) at Svalbard (2010, background): “Differential niche utilization could be a factor affecting sexual dimorphism in polar bears and males have been suggested to feed more often on the larger bearded seal (Erignathus barbatus) while females prefer the smaller (<80 kg) ringed seal (Phoca hispida; Stirling and Derocher 1990; Thiemann et ”
• A tale of two polar bear populations: ice habitat, harvest, and body condition (2011, background): “…whereas ringed seals constitute the main prey of polar bears in BB, with other species such as bearded seal (Erignathus barbatus), beluga whale (Delphinapterus leucas), and harbour seal (Phoca vitulina) composing the majority of the remainder of the diet (Thiemann et al. 2008; Born et al. 2011).”
• Impacts of changing sea-ice conditions on Arctic marine mammals (2011, background): “Even walruses and the ice-associated cetaceans are consumed by polar bears in some areas (see Thiemann et al. 2008).”
• Forecasting the relative influence of environmental and anthropogenic stressors on polar bears (2016, background): “Declines in the extent and temporal availability of ice over such areas reduces their access to ringed (Pusa hispida) and bearded (Erignathus barbatus) seals, their preferred prey (Thiemann et al. 2008), and represents a loss of preferred habitat.”
• Importance of fast ice and glacier fronts for female polar bears and their cubs during spring in Svalbard, Norway (2012, positive): “Polar bears depend on sea ice as a platform for hunting their favoured prey, ice-associated seals (Stirling & Archibald 1977, Smith 1980, Derocher et al. 2002, Thiemann et al. 2008).”
• Methods of estimating marine mammal diets: A review of validation experiments and sources of bias and uncertainty (2012, background): “…animal-borne video on harbor seals, Iverson et al. 2004; stable isotope analyses, Tucker et al. 2008) conducted simultaneously, through knowledge of prey fields available (Iverson et al. 2006, Thiemann et al. 2008), and through computer simulations (Iverson et al. 2004, 2006; Thiemann et al. 2008).”