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Quantifying the sensitivity of Arctic marine mammals to climate-induced habitat change.
- K. Laidre, I. Stirling, L. Lowry, O. Wiig, M. Heide‐Jørgensen, S. Ferguson
- Environmental ScienceEcological applications : a publication of the…
- 1 March 2008
Based on a pan-Arctic quantitative index of species sensitivity to climate change, the hooded seal, the polar bear, and the narwhal appear to be the three most sensitive Arctic marine mammal species, primarily due to reliance on sea ice and specialized feeding.
A novel method for identifying behavioural changes in animal movement data.
This work model movement data as a subsampling of a continuous stochastic processes, and introduces the behavioural change point analysis (BCPA), a likelihood-based method that allows for the identification of significant structural changes.
Role of the bowhead whale as a predator in West Greenland
Benthic zooplankton densities and behavioral data suggest whales target pre- ascension stage epibenthic copepods in high density patches, and bioenergetic modeling indicated the population consumes ~220 US t of zoopLankton per day or >21 000 t during the 4 mo stay in Disko Bay.
Arctic marine mammal population status, sea ice habitat loss, and conservation recommendations for the 21st century
- K. Laidre, H. Stern, F. Ugarte
- Environmental ScienceConservation biology : the journal of the Society…
- 17 March 2015
Recommendations for effective AMM conservation are maintained and improved by local, federal, and international partners; recognize spatial and temporal variability in AMM subpopulation response to climate change; implement monitoring programs with clear goals; mitigate cumulative impacts of increased human activity; and recognize the limits of current protected species legislation.
Sea-Ice Indicators of Polar Bear Habitat
Nineteen subpopulations of polar bears ( Ursus maritimus ) are found throughout the circumpolar Arctic, and in all regions they depend on sea ice as a platform for traveling, hunting, and breeding.…
Deep-diving by narwhals Monodon monoceros: differences in foraging behavior between wintering areas?
Variation in resource selection among sub-populations may elucidate differences in fit- ness and life history strategies. Specifically for top marine predators, differences in movements and behavior…
The polar regions in a 2°C warmer world
Expected consequences of increased Arctic warming include ongoing loss of land and sea ice, threats to wildlife and traditional human livelihoods, increased methane emissions, and extreme weather at lower latitudes.
Population-specific home ranges and migration timing of Pacific Arctic beluga whales (Delphinapterus leucas)
Autumn migration timing as well as differences in spatial and temporal segregation between BS and ECS beluga populations may be a result of maternally driven philopatry and population-specific adaptations to dynamically available resources.
Regional diving behavior of Pacific Arctic beluga whales Delphinapterus leucas and possible associations with prey
- D. Hauser, K. Laidre, S. Parker-Stetter, J. Horne, R. Suydam, P. Richard
- Environmental Science
- 15 December 2015
Two populations of beluga whales Delphinapterus leucas in the Pacific Arctic make seasonal migrations to regions characterized by diverse bathymetry and hydrography, yet there is limited information…
WINTER FEEDING INTENSITY OF NARWHALS (MONODON MONOCEROS)
This study presents the first information on the winter diet of the narwhal and suggests Baffin Bay and Davis Strait are heavily utilized for feeding, in contrast to limited food intake during the summer period.