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Pierre R Richard
Fisheries and Oceans Canada
24Publications
7H-index
133Citations
Publications 24
Newest
#1David J. Yurkowski (UM: University of Manitoba)H-Index: 10
#2Marie Auger-Méthé (UBC: University of British Columbia)H-Index: 11
Last.Marianne Marcoux (Fisheries and Oceans Canada)H-Index: 11
view all 40 authors...
#1Donna D. W. Hauser (UW: University of Washington)H-Index: 9
#2Kristin L. Laidre (UW: University of Washington)H-Index: 31
Last.Pierre R Richard (Fisheries and Oceans Canada)H-Index: 7
view all 5 authors...
#1John J. Citta (Alaska Department of Fish and Game)H-Index: 9
#2Lloyd F. Lowry (UAF: University of Alaska Fairbanks)H-Index: 6
Last.Justin A. Crawford (Alaska Department of Fish and Game)H-Index: 2
view all 26 authors...
Abstract We collated available satellite telemetry data for six species of ice-associated marine mammals in the Pacific Arctic: ringed seals ( Pusa hispida ; n = 118), bearded seals ( Erignathus barbatus, n = 51), spotted seals ( Phoca largha, n = 72), Pacific walruses ( Odobenus rosmarus divergens, n = 389); bowhead whales ( Balaena mysticetus, n = 46), and five Arctic and sub-arctic stocks of beluga whales ( Delphinapterus leucas, n = 103). We also included one seasonal resident, eastern North...
#1Donna D. W. Hauser (UW: University of Washington)H-Index: 9
#2Kristin L. Laidre (UW: University of Washington)H-Index: 31
Last.Pierre R Richard (Fisheries and Oceans Canada)H-Index: 7
view all 6 authors...
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 ...
#1Donna D. W. Hauser (UW: University of Washington)H-Index: 9
#2Kristin L. Laidre (UW: University of Washington)H-Index: 31
Last.Pierre R Richard (Fisheries and Oceans Canada)H-Index: 7
view all 6 authors...
There has been extensive sea ice loss in the Chukchi and Beaufort seas where two beluga whale (Delphinapterus leucas) populations occur between July-November. Our goal was to develop population-specific beluga habitat selection models that quantify relative use of sea ice and bathymetric features related to oceanographic processes, which can provide context to the importance of changing sea ice conditions. We established habitat selection models that incorporated daily sea ice measures (sea ice ...
#1John J. Citta (Alaska Department of Fish and Game)H-Index: 9
#2Pierre R Richard (Fisheries and Oceans Canada)H-Index: 7
Last.Kathryn J. Frost (UAF: University of Alaska Fairbanks)H-Index: 3
view all 15 authors...
At least five populations (stocks) of beluga whales (Delphinapterus leucas) are thought to winter in the Being Sea, including the Bristol Bay, Eastern Bering Sea (Norton Sound), Anadyr, Eastern Chukchi Sea, and Eastern Beaufort Sea (Mackenzie) populations. Belugas from each population have been tagged with satellite-linked transmitters, allowing us to describe their winter (January–March) distribution. The objectives of this paper were to determine: (1) If each population winters in the Bering S...
#1Pierre R RichardH-Index: 7
#2Margaret A. TrebleH-Index: 8
Last.Oceans CanadaH-Index: 3
view all 4 authors...
IV RESUME IV INTRODUCTION 1 METHODS 2 RESULTS AND DISCUSSION 3 SOURCES OF UNCERTAINTY 5 ACKNOWLEDGEMENTS 7 REFERENCES 8
#1K. H. Westdal (UM: University of Manitoba)H-Index: 2
#2Pierre R Richard (Fisheries and Oceans Canada)H-Index: 7
Last.Jack Orr (Fisheries and Oceans Canada)H-Index: 13
view all 3 authors...
Population estimates are important for the development of management plans of harvested species and thereby ultimately important for species sustainability. Aerial surveys are one of the methods used in preparing population estimates. For marine mammals, aerial population surveys require that animal biology is understood in order to account for availability bias. Availability bias in this case derives from animals that are invisible to the survey due to diving behavior. In order to understand di...
#2Pierre R RichardH-Index: 7
Last.Kristin L. Laidre (UW: University of Washington)H-Index: 31
view all 4 authors...
A model of the metapopulation structure of narwhals Monodon monoceros in Baffin Bay, Hudson Bay and adjacent waters is proposed based on satellite telemetry data collected over two decades from six coastal aggregations of narwhals in the eastern Canadian high Arctic, Hudson Bay and West Greenland. In addition, data on seasonal catches of narwhals in 11 Inuit communities are used to provide information on the occurrence of narwhals. The tracking data suggest that disjunct summer aggregations of n...
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