J
Justin A. Crawford
Researcher at Alaska Department of Fish and Game
Publications - 11
Citations - 259
Justin A. Crawford is an academic researcher from Alaska Department of Fish and Game. The author has contributed to research in topics: Sea ice & Arctic. The author has an hindex of 6, co-authored 8 publications receiving 176 citations. Previous affiliations of Justin A. Crawford include Oregon State University.
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A comparison of ringed and bearded seal diet, condition and productivity between historical (1975–1984) and recent (2003–2012) periods in the Alaskan Bering and Chukchi seas
TL;DR: Ringed seals in the Alaskan Bering and Chukchi seas have adjusted to changes in diet, are growing faster and possibly weaning more pups in the recent compared to the historic period, and patterns are less evident for bearded seals.
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Different habitat use strategies by subadult and adult ringed seals ( Phoca hispida ) in the Bering and Chukchi seas
TL;DR: Subadult ringed seals, unconstrained by the need to maintain territories that contain stable breeding/pupping habitat, moved south to the Bering Sea ice edge, where there are better feeding opportunities, lower energetic costs (no breathing hole maintenance), and less exposure to predation.
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Survival and causes of mortality for pygmy rabbits (Brachylagus idahoensis) in Oregon and Nevada
TL;DR: Investigation of survival and causes of mortality of pygmy rabbits in southeastern Oregon and northwestern Nevada found that survival rates varied among study sites, sexes, and with monthly interval in a parallel pattern, indicating both the temporal and spatial variability of survival is underestimated.
Journal ArticleDOI
A multi-species synthesis of satellite telemetry data in the Pacific Arctic (1987–2015): Overlap of marine mammal distributions and core use areas
John J. Citta,Lloyd F. Lowry,Lori T. Quakenbush,Brendan P. Kelly,Anthony S. Fischbach,Josh M. London,Chadwick V. Jay,Kathryn J. Frost,Gregory O'Corry Crowe,Justin A. Crawford,Peter L. Boveng,Michael F. Cameron,Andrew L. Von Duyke,Mark Nelson,Lois A. Harwood,Pierre Richard,Robert Suydam,Mads Peter Heide-Jørgensen,Roderick C. Hobbs,D. I. Litovka,Marianne Marcoux,Alex Whiting,Amy S. Kennedy,John C. George,Jack Orr,Tom Gray +25 more
TL;DR: In this paper, the authors collected satellite telemetry data for six species of ice-associated marine mammals in the Pacific Arctic: ringed seals (Pusa hispida), bearded seals (Erignathus barbatus), spotted seals (Phoca largha, n´=´72), Pacific walruses (Odobenus rosmarus divergens, n`=´389), bowhead whales (Balaena mysticetus), and five Arctic and sub-arctic stocks of beluga whales (Delphinapterus leucas
Journal ArticleDOI
Ringed seal (Pusa hispida) seasonal movements, diving, and haul-out behavior in the Beaufort, Chukchi, and Bering Seas (2011-2017).
TL;DR: Speculations about the physiology of molting and its role in energetics, habitat use, and behavior are discussed; along with possible evidence of purported ringed seal ecotypes.