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

  title={Decadal shifts in autumn migration timing by Pacific Arctic beluga whales are related to delayed annual sea ice formation},
  author={Donna D. W. Hauser and Kristin L. Laidre and Kathleen M. Stafford and Harry L. Stern and Robert S. Suydam and Pierre Richard},
  journal={Global Change Biology},
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… 

Annual variation of oceanographic conditions changed migration timing of bowhead whales Balaena mysticetus in the southern Chukchi Sea

The Chukchi Sea environment changes considerably in physical and biological conditions, driven by the expanding volume of warm Pacific summer water. These environmental changes can affect the

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. We

Beluga whales in the western Beaufort Sea: Current state of knowledge on timing, distribution, habitat use and environmental drivers

Interannual variability in acoustic detection of blue and fin whale calls in the Northeast Atlantic High Arctic between 2008 and 2018

Northern Hemisphere blue and fin whales are regular summer migrants to Arctic waters. Given the profound changes the Arctic is currently undergoing due to global warming, changes in habitat use and

Decadal migration phenology of a long-lived Arctic icon keeps pace with climate change.

Animals migrate in response to seasonal environments, to reproduce, to benefit from resource pulses, or to avoid fluctuating hazards. Although climate change is predicted to modify migration, only a

Timing is everything: Drivers of interannual variability in blue whale migration

The correlation between krill abundance and the transition from D to B calls suggested that in high-krill-abundance years, whales switched earlier from social to reproductive-related behavior on their feeding grounds, which may allow blue whales to accommodate environmental variability while balancing important biological needs.

Decadal‐scale phenology and seasonal climate drivers of migratory baleen whales in a rapidly warming marine ecosystem

Species' response to rapid climate change can be measured through shifts in timing of recurring biological events, known as phenology. The Gulf of Maine is one of the most rapidly warming regions of

Migration dynamics of polar bears (Ursus maritimus) in western Hudson Bay

It was found that ice concentration, wind speed, and wind direction affected polar bear migration onto ice during freeze-up and ice concentration and wind Direction affected migration onto land during breakup.

Circumpolar phylogeography and demographic history of beluga whales reflect past climatic fluctuations

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.

Habitat selection by two beluga whale populations in the Chukchi and Beaufort seas

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.



Migration phenology and seasonal fidelity of an Arctic marine predator in relation to sea ice dynamics.

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.

Shifting patterns of life in the Pacific Arctic and sub-Arctic seas.

  • J. Grebmeier
  • Environmental Science
    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 ecosystem

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 Mackenzie

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.

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 are

Is it ‘boom times’ for baleen whales in the Pacific Arctic region?

  • S. Moore
  • Environmental Science
    Biology Letters
  • 2016
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.

Increased Land Use by Chukchi Sea Polar Bears in Relation to Changing Sea Ice Conditions

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.

Arctic marine mammal population status, sea ice habitat loss, and conservation recommendations for the 21st century

  • K. LaidreH. Stern F. Ugarte
  • Environmental Science
    Conservation biology : the journal of the Society for Conservation Biology
  • 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.

Temporal peaks in beluga whale (Delphinapterus leucas) acoustic detections in the northern Bering, northeastern Chukchi, and western Beaufort Seas: 2010–2011

Two populations of beluga whales (Delphinapterus leucas) migrate annually between their summering grounds in the eastern Chukchi and eastern Beaufort Seas, and overwintering areas in the Bering Sea.