Decadal shifts in autumn migration timing by Pacific Arctic beluga whales are related to delayed annual sea ice formation

@article{Hauser2017DecadalSI,
  title={Decadal shifts in autumn migration timing by Pacific Arctic beluga whales are related to delayed annual sea ice formation},
  author={D. Hauser and K. Laidre and K. Stafford and H. Stern and R. Suydam and P. Richard},
  journal={Global Change Biology},
  year={2017},
  volume={23},
  pages={2206–2217}
}
Migrations are often influenced by seasonal environmental gradients that are increasingly being altered by climate change. The consequences of rapid changes in Arctic sea ice have the potential to affect migrations of a number of marine species whose timing is temporally matched to seasonal sea ice cover. This topic has not been investigated for Pacific Arctic beluga whales (Delphinapterus leucas) that follow matrilineally maintained autumn migrations in the waters around Alaska and Russia. For… Expand

Figures, Tables, and Topics from this paper

Seasonal patterns in acoustic detections of marine mammals near Sachs Harbour, Northwest Territories1
The Arctic is changing rapidly, leading to changes in habitat availability and increased anthropogenic disturbance. Information on the distribution of animals is needed as these changes occur. WeExpand
Beluga whales in the western Beaufort Sea: Current state of knowledge on timing, distribution, habitat use and environmental drivers
Abstract The seasonal and geographic patterns in the distribution, residency, and density of two populations (Chukchi and Beaufort) of beluga whales (Delphinapterus leucas) were examined using dataExpand
Migration dynamics of polar bears (Ursus maritimus) in western Hudson Bay
Migration is predicted to change both spatially and temporally as climate change alters seasonal resource availability. Species in extreme environments are especially susceptible to climate change;Expand
Timing is everything: Drivers of interannual variability in blue whale migration
TLDR
A decadal-scale increase in temperature due to climate change has led to blue whales extending their overall time in Southern California, and whales were arriving at the feeding grounds more than one month earlier, while their departure date did not change. Expand
Habitat selection by two beluga whale populations in the Chukchi and Beaufort seas
TLDR
The results indicate that sea ice variables were rarely the primary drivers of beluga summer-fall habitat selection, and associations with bathymetric features that affect prey availability seemed key to habitat selection during summer and fall. Expand
Circumpolar phylogeography and demographic history of beluga whales reflect past climatic fluctuations
TLDR
The association between climate, population size, and available habitat in belugas is suggested, and vulnerable populations which, if extirpated as a consequence of ocean warming, will lead to a substantial decline of species‐wide haplotype diversity are identified. Expand
Thermal heterogeneity along the migration corridors of sea turtles: Implications for climate change ecology
TLDR
It is found that over the next 80 years, sea turtles will be exposed to significant increases in sea surface temperatures along their key migration corridors and the surrounding area, with no evidence to support that phenological shifts might result in turtles being exposed to climatic conditions that are similar to current levels, in the future. Expand
A decade of marine mammal acoustical presence and habitat preference in the Bering Sea
TLDR
This 10-year dataset documents the current state and tracks recent dynamics of odontocetes and their habitats along the Pacific Arctic Corridor to contribute to ongoing discussions about future Arctic conditions. Expand
Variability in fin whale (Balaenoptera physalus) occurrence in the Bering Strait and southern Chukchi Sea in relation to environmental factors
Abstract Fin whales (Balaenoptera physalus) are common summer visitors to the Pacific Arctic, migrating through the Bering Strait and into the southern Chukchi Sea to feed on seasonally-abundantExpand
Bowhead and beluga whale acoustic detections in the western Beaufort Sea 2008–2018
The Distributed Biological Observatory (DBO) was established to detect environmental changes in the Pacific Arctic by regular monitoring of biophysical responses in each of 8 DBO regions. Here weExpand
...
1
2
3
4
...

References

SHOWING 1-10 OF 79 REFERENCES
Migration phenology and seasonal fidelity of an Arctic marine predator in relation to sea ice dynamics.
TLDR
The links between increased atmospheric temperatures, sea ice dynamics, and the migratory behaviour of an ice-dependent species emphasizes the importance of quantifying and monitoring relationships between migratory wildlife and environmental cues that may be altered by climate change. Expand
Shifting patterns of life in the Pacific Arctic and sub-Arctic seas.
  • J. Grebmeier
  • Environmental Science, Medicine
  • Annual review of marine science
  • 2012
Recent changes in the timing of sea ice formation and retreat, along with increasing seawater temperatures, are driving shifts in marine species composition that may signal marine ecosystemExpand
Summer and Autumn Movements of Belugas of the Eastern Beaufort Sea Stock
Beluga whales of the eastern Beaufort Sea stock were tagged with satellite-linked time-depth recorders and tracked during summer and autumn in 1993, 1995, and 1997. Whales occupied the MackenzieExpand
Differences in diving and movement patterns of two groups of beluga whales in a changing Arctic environment reveal discrete populations
Harvest and global climate change are among the major ongoing threats to most Arc- tic marine mammal populations. Affected by commercial hunting in the past, beluga whales Del- phinapterus leucas areExpand
Divergent patterns of recent sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region
Abstract Over the past three decades of the observed satellite record, there have been significant changes in sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic RegionExpand
Population-specific home ranges and migration timing of Pacific Arctic beluga whales (Delphinapterus leucas)
TLDR
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. Expand
Is it ‘boom times’ for baleen whales in the Pacific Arctic region?
  • S. Moore
  • Biology, Medicine
  • Biology Letters
  • 2016
TLDR
An examination of seasonal occurrence, foraging plasticity and (for bowhead whales) body condition suggests that the current state of Pacific Arctic marine ecosystem may be ‘boom times’ for baleen whales. Expand
Increased Land Use by Chukchi Sea Polar Bears in Relation to Changing Sea Ice Conditions
TLDR
Comparing land use patterns in the Chukchi Sea between two periods when substantial summer sea-ice loss occurred suggests that the ecology of this region may provide a degree of resilience to sea ice loss, and is consistent with other studies supporting increased land use as a common response of polar bears to sea- ice loss. Expand
Correlation of a strong Alaska Coastal Current with the presence of beluga whales Delphinapterus leucas near Barrow, Alaska
Oceanographic features and physical processes in the ocean can create regions where prey, and therefore predators, may accumulate. Beluga whales Delphinapterus leucas are the most numerous cetaceanExpand
Regional diving behavior of Pacific Arctic beluga whales Delphinapterus leucas and possible associations with prey
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 informationExpand
...
1
2
3
4
5
...