Catch Statistics for Beluga (Delphinapterus Leucas) Harvested from the Eastern High Arctic - Baffin Bay and Cumberland Sound Populations from 1977-2020 PDF Download

Author: Cortney A. Watt
Publisher:
ISBN: 9780660404400
Category : Whale populations
Languages : en
Pages : 18

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Author: Marianne Marcoux
Publisher:
ISBN:
Category : White whale
Languages : en
Pages : 35

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Author: David Bruce Stewart
Publisher:
ISBN: 9780660249391
Category :
Languages : en
Pages : 89

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"A record of commercial and subsistence catches of beluga whales (Delphinapterus leucas) from the Cumberland Sound population in Nunavut, over the period 1840 through 2016, is presented. This work adds substantially to the catch record and improves the basis for population modelling to inform recovery planning. Commercial hunts in 1860 through 1966 removed at least 14,079 belugas from Cumberland Sound, and subsistence hunts another 2,765--mostly after 1960. Annual catches suggest a pattern of long-term depletion, with partial recovery related to a hiatus in commercial hunting around World War I, followed by continued depletion. Catches stabilized following formal harvest regulation in 1980. In some years the historical commercial catches were 15x greater than the current annual subsistence catches"--Abstract, p. vi.

Author: Cortney A. Watt
Publisher:
ISBN: 9780660393278
Category : Whale populations
Languages : en
Pages : 33

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Category :
Languages : en
Pages :

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Category :
Languages : en
Pages : 0

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Belugas (Delphinapterus leucas) in Cumberland Sound are a genetically distinct population in the Canadian eastern Arctic. They have been designated as threatened by the Committee on the Status of Endangered Wildlife in Canada due to a possible decline in abundance. To provide an update to the 2009 population estimate an aerial survey was conducted in August 2014. The 2014 survey had two components; a photographic survey of Clearwater Fiord (a small inlet in the northwest corner of Cumberland Sound), and a visual survey of the northern and western parts of Cumberland Sound. The photographic survey completely covered Clearwater Fiord four times as this is known to be an area where belugas aggregate in the summer months. The survey of the northern part of Cumberland Sound was completed twice, whereas the survey of the western part of Cumberland Sound was completed once. Different correction factors for availability bias were calculated according to the presumed depth at which belugas could be seen from the aircraft and on photos. The corrected estimate for Clearwater Fiord was 603 [coefficient of variance (CV) = 0.076, 95% confidence interval (CI) = 519-699], while the estimate for the northern part of Cumberland Sound was 548 (CV = 0.445, 95% CI = 240-1256). No belugas were seen in the western part of Cumberland Sound. This resulted in a total population abundance of 1151 (CV = 0.214, 95% CI = 760-1744) belugas.

Author: Harriet V. Kuhnlein
Publisher: Fao
ISBN:
Category : Business & Economics
Languages : en
Pages : 396

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Today, globalisation and homogenisation have replaced local food cultures. The 12 case studies presented in this book show the wealth of knowledge in indigenous communities in diverse ecosystems, the richness of their food resources, the inherent strengths of the local traditional food systems, how people think about and use these foods, the influx of industrial and purchased food, and the circumstances of the nutrition transition in indigenous communities. The unique styles of conceptualising food systems and writing about them were preserved. Photographs and tables accompany each chapter.

Author: Steven H. Ferguson
Publisher: Springer Science & Business Media
ISBN: 9048191211
Category : Science
Languages : en
Pages : 313

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In Arctic Canada, Hudson Bay is a site of great exploration history, aboriginal culture, and a vast marine wilderness supporting large populations of marine mammals and birds. These include some of the most iconic Arctic animals like beluga, narwhal, bowhead whales, and polar bears. Due to the challenges of conducting field research in this region, some of the mysteries of where these animals move, and how they are able to survive in such seemingly inhospitable, ice-choked habitats are just now being unlocked. For example, are polar bears being replaced by killer whales? This new information could not be more salient, as the Hudson Bay Region is undergoing rapid environmental change due to global warming, as well as increased pressures from industrial development interests. A Little Less Arctic brings together some of the world’s leading Arctic scientists to present the current state of knowledge on the physical and biological characteristics of Hudson Bay.

Author: Andrew E. Dizon
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 404

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Author: Volker Sommer
Publisher: Cambridge University Press
ISBN: 9780521864466
Category : Psychology
Languages : en
Pages : 408

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Behavioural observations from both the field and captivity indicate that same-sex sexual interactions are widespread throughout the animal kingdom, and occur quite frequently in certain non-human species. Proximate studies of these phenomena have yielded important insights into genetic, hormonal and neural correlates. In contrast, there has been a relative paucity of research on the evolutionary aspects. Homosexual Behaviour in Animals seeks to readdress this imbalance by exploring animal same-sex sexual behaviour from an evolutionary perspective. Contributions focus on animals that routinely engage in homosexual behaviour and include birds, dolphin, deer, bison and cats, as well as monkey and apes, such as macaques, gorillas and bonobos. A final chapter looks at human primates. This book will appeal to graduate students and researchers in evolutionary biology, biological anthropology, zoology, evolutionary psychology, animal behaviour and anyone interested in the current state of knowledge in this area of behavioural studies.