Download or read book Distribution Abundance and Age Segregation of Bowhead Whales in the Southeast Beaufort Sea August September 1985 written by Wayne S. Duval and published by . This book was released on 1986 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examines the spatial distribution, relative abundance, and age segregation of bowhead whales in relation to petroleum industry activities and oceanographic features in the south-east Beaufort Sea during the 1985 open water season. Surface oceanographic conditions at the time of the aerial surveys (August-September) are described using satellite imagery analyses and in-situ temperature and wind data from industry vessels. Aerial photographic surveys provided information on the age/size class distribution and site tenacity of bowhead whales within the study area. Bowhead sightings recorded by other researchers working in that area during 1985 are also examined. Comparisons are made with results of previous bowhead whale surveys in the area.
Download or read book Distribution Abundance and Age Segregation of Bowhead Whales in the Southeast Beaufort Sea written by and published by . This book was released on 1986 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution Abundance and Age Segregation of Bowhead Whales in the Southeast Beaufort Sea August September 1986 written by John K. B. Ford and published by . This book was released on 1987 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bowhead whale is a large, baleen whale found only in Arctic and sub-Artic waters. It is now one of the rarest cetaceans and is currently considered an endangered species. During August and September whales are present in areas of offshore oil exploration activity in the southeast Beaufort Sea. Aerial systematic and photogrammetric surveys were conducted in the southeast Beaufort Sea during August and September 1986, to investigate the distribution, relative abundance, and age segregation of the whales in relation to petroleum activites in the region. Two systematic surveys of the study area were completed from August 25-September 1 and September 7-14. Photogrammetric surveys of portions of the study area were conducted from August 25-September 1. Bowhead sightings recorded by researchers and by industry personnel during 1986 were also examined.
Download or read book Distribution Abundance and Age Segregation of Bowhead Whales in the Southeast Beaufort Sea August September 1986 written by John K. B. Ford and published by . This book was released on 1901 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution Abundance and Age Segregation of Bowhead Whales in the Southeast Beaufort Sea August September 1986 written by John K. B. Ford and published by . This book was released on 1987 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution Abundance and Age Segregation of Bowhead Whales in the Southeast Beaufort Sea August September 1986 written by Canada Oil and Gas Lands Administration and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Bowhead Whale written by John J. Burns and published by . This book was released on 1993 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to be a cohesive species account of the bowhead whale. Chapters detail the Bering Sea population, evolutionary relationships and classification, anatomy and physiology, behavior, foods and feeding ecology, reproduction, morbidity and mortality, distribution and movement, population size and dynamics, commercial whaling, subsistence whaling, and the influence of man and his activities.
Download or read book Distribution Abundance and Age Segregation of Bowhead Whales in the Southeast Beaufort Sea August September 1986 written by and published by . This book was released on 1987 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behavior of Bowhead Whales of the Davis Strait and Bering written by Gary W. Miller and published by . This book was released on 1991 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution of Bowhead Whales and Other Marine Mammals in the Southeast Beaufort Sea August September 1983 written by Peter L. McLaren and published by Ottawa, Ont. : Environmental Studies Revolving Funds. This book was released on 1985 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Systematic aerial surveys were conducted in the southeast Beaufort Sea on 19-24 August and 6-11 September 1983 to document the numbers and distributions of bowhead whales and of other marine mammals. The study area extended from 141 W (Alaska-Yukon border) eastward to 128 40 W (near Cape Bathurst), and from the 2 m depth contour northward to about 25 km north of the 100 m depth contour, except between 141 W and 138 W where the northern boundary was at 70 20 N. The northernmost 25 km sections east of 138 W also extended beyond the 200 m depth contour, and thus included the steep shelf break beyond the shallow continental shelf.
Download or read book Marine Mammals and Noise written by W. John Richardson and published by Academic Press. This book was released on 2013-10-22 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many marine mammals communicate by emitting sounds that pass through water. Such sounds can be received across great distances and can influence the behavior of these undersea creatures. In the past few decades, the oceans have become increasingly noisy, as underwater sounds from propellers, sonars, and other human activities make it difficult for marine mammals to communicate. This book discusses, among many other topics, just how well marine mammals hear, how noisy the oceans have become, and what effects these new sounds have on marine mammals. The baseline of ambient noise, the sounds produced by machines and mammals, the sensitivity of marine mammal hearing, and the reactions of marine mammals are also examined. An essential addition to any marine biologist's library, Marine Mammals and Noise will be especially appealing to marine mammalogists, researchers, policy makers and regulators, and marine biologists and oceanographers using sound in their research.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Noise on Marine Mammals written by William John Richardson and published by . This book was released on 1991 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Potential Effects of Tanker Traffic on the Bowhead Whale in the Beaufort Sea written by William R. Koski and published by Indian and Northern Affairs Canada. This book was released on 1988 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report on the potential effects noise pollution and other disturbances associated with oil tanker traffic from Amauligak (50 km north of the Mackenzie Delta) through the Beaufort Sea would have on endangered bowhead whales (Balaenidae).
Download or read book Importance of the Eastern Alaskan Beaufort Sea to Feeding Bowhead Whales 1985 written by William John Richardson and published by . This book was released on 1986 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report on 2-year project to quantify what proportion of energy requirements of western Arctic (i.e. Bering Sea) bowhead whale stock is provided by food resources located in eastern Alaskan Beaufort Sea.
Download or read book Distribution of Bowhead Whales in Relation to Hydrometeorological Events in the Beaufort Sea written by Denis H. Thomson and published by King City, Ontario : LGL Limited. This book was released on 1986 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerial surveys of the summertime distribution of bowhead whales in the southeastern Beaufort Sea have shown that the distribution of bowheads has been quite variable over the four years of study, 1980-83. This report presents the results of an investigation of the relationship between the observed distribution of bowhead whales in the Canadian Beaufort Sea and the physical and meteorological patterns that might affect the distribution of zooplankton in the Beaufort Sea. The overall aim of this study was to identify easily-monitored parameters that could be used to predict bowhead whale distribution.
Download or read book Bowhead Whale Monitoring Study in the Southeast Beaufort Sea July September 1984 written by Lois A. Harwood and published by . This book was released on 1985 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
