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Book Winter Ecology of Ringed Seals Phoca Hispida in Alaska

Download or read book Winter Ecology of Ringed Seals Phoca Hispida in Alaska written by Kathryn J. Frost and published by . This book was released on 1989 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Ringed Seal Phoca Hispida of the Canadian Western Arctic

Download or read book The Ringed Seal Phoca Hispida of the Canadian Western Arctic written by Thomas G. Smith and published by . This book was released on 1987 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the biology and population ecology of the ringed seal, Phoca hispida, based on over 8,000 specimens and other data gathered in the Amundsen Gulf and southeastern Beaufort Sea.

Book Biology of the Ringed Seal Phoca Hispida in Alaska 1960 2010

Download or read book Biology of the Ringed Seal Phoca Hispida in Alaska 1960 2010 written by Lori Trent Quakenbush and published by . This book was released on 2011 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Alaska Department of Fish and Game (ADF&G) has been monitoring the health and status of ringed seals (Phoca hispida) in Alaska since 1960 by collecting information and samples from the Alaska Native subsistence harvest. This monitoring program is especially important because agencies are unable to overcome the logistical and sampling constraints necessary to estimate seal abundance in remote, ice covered waters. As such, reliable estimates of ringed seal abundance or population trend are lacking. Retrospective data analyses from this monitoring program allow us to examine how parameters that affect population size and status may vary in time and how current conditions compare with past conditions. Parameters we monitor that are indicative of population health or status include growth rate, body condition, diet, age distribution, sex ratio, age of maturation, and pregnancy rate. Since 2000, ADF&G has also conducted surveys for local knowledge and hunter preferences and analyzed tissue samples for contaminants and disease. All of these collections rely on the cooperation of coastal subsistence communities. Villages that have participated in the sampling program span the region from Hooper Bay in the Bering Sea to Kaktovik in the Beaufort Sea, including islands in the Bering Sea; an area that encompasses most of the range of ringed seals in Alaska.

Book Ecology of Ringed Seals Phoca Hispida in Western Hudson Bay Canada

Download or read book Ecology of Ringed Seals Phoca Hispida in Western Hudson Bay Canada written by Magaly Vincent-Chambellant and published by . This book was released on 2010 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Density -- distribution -- life-history -- body condition -- reproduction -- diet -- spring ice break-up -- temporal variation -- snow depth -- ice cover -- climate change.

Book Ringed Seals in the North Atlantic

Download or read book Ringed Seals in the North Atlantic written by North Atlantic Marine Mammal Commission and published by Tromsø [Norway] : North Atlantic Marine Mammal Commission. This book was released on 1998 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Species Account

Download or read book Species Account written by Kathryn J. Frost and published by . This book was released on 1980 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: A report on ringed seals in the northern waters adjacent to Alaska.

Book Ethology and Behavioral Ecology of Phocids

Download or read book Ethology and Behavioral Ecology of Phocids written by Daniel P. Costa and published by Springer Nature. This book was released on 2022-03-17 with total page 651 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phocid (or earless or true) seals are ecologically diverse, occupying habitats from the tropics to the poles in marine and freshwater and feeding on anything from tiny zooplankton to other marine mammals. There are 18 species of phocid seals, the smallest species (ringed seal) is more than 20 times smaller than the largest (southern elephant seal), with marked sexual dimorphism present in some species. This book examines the behavior, ecology, and physiology that allow phocid seals to inhabit such a wide range of habitats. The book is composed of 16 chapters written by 37 authors from 8 countries. The book first describes the general patterns of phocid behavior, followed by descriptions of what is known about well-studied species. We have taken a holistic approach, focusing not only on the behaviors themselves but also on the factors that constrain the expression of behavior and the proximate mechanisms driving behavior. In many cases, the chapters represent collaborations between well-established researchers and early-mid career individuals who bring new perspectives to help carry the field of phocid behavioral ecology well into the future.

Book Marine Mammal Protection Act and Endangered Species Act Implementation Program 1999

Download or read book Marine Mammal Protection Act and Endangered Species Act Implementation Program 1999 written by Anita L. Lopez and published by . This book was released on 2000 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Marine Fisheries Service (l\rNßS) conducted an aerial survey of the beluga whale population in Cook Inlet, Alaska, during 8-14 June 1999. The 41.5 hr surveywas flown in a twin-engine, high-wing aircraft at an altitude of 244 m (800 ft) and speed of 185 km/hr (100 kt) along a trackline 1.4 km from shore, consistent with annual surveys flown each year since 1993. The flights in 1999 included one or more surveys of coastal areas around nearly the entire Inlet and 1,790 km oftransects across the Inlet. Paired, independent observers searched on the coastal (left) side of the plane, where virtually all sightings occur, while a single observer and a computer operatorldatarecorder were on the right side. In addition, each day a different visitor observed from the left side. After finding beluga groups, a series of aerial passes were made to allow at least two pairs of primary observers to make four or more counts of each group. Inter-day counts ranged from 75 to160 belugas near the Susitna River (between the Beluga and Little Susitna Rivers), 13 to 43 in Knik Arm, and 17 to 30 in Chickaloon Bay, but no belugas were found in lower Cook Inlet. The sum of the aerial estimates (using median counts from each site, not corrected for missed whales) ranged from 197 to 221 whales, depending on observer. The index count for 1999 is 217 , which is slightly higher than the index counts for 1998 (193) but lower than all index counts by NMFS observers between 1993-97

Book Ecology of the ringed seal Phoca hispida in its fast ice breeding habit

Download or read book Ecology of the ringed seal Phoca hispida in its fast ice breeding habit written by T.G. SMITH and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Beaufort Sea sale 97 Information Update

Download or read book Beaufort Sea sale 97 Information Update written by United States. Ocean Assessments Division. Alaska Office and published by . This book was released on 1988 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Outer Continental Shelf Environmental Assessment Program"--Cover.

Book Comprehensive Bibliography

Download or read book Comprehensive Bibliography written by Outer Continental Shelf Environmental Assessment Program and published by . This book was released on 1984 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: