Population Study Of The Alaska Fur Seal Herd

Author : Karl W. Kenyon
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.86/5 ( download)

DOWNLOAD NOW!

Download or read book A Population Study of the Alaska Fur-seal Herd written by Karl W. Kenyon and published by . This book was released on 1954 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction. Sources and methods ; Counts and measurements of seals ; Age determination -- Components of the herd. Bulls ; Bachelors ; Pups ; Cows ; Yearlings -- Present size of the herd. Life habits ; Estimate of the size of the herd from the trend of the commercial harvest ; Estimate of the size of the herd from the trend of the harem bull count -- Appendix A. Effect of sealing on fluctuations in herd size 1786-1951 -- Appendix B. Fecundity of males -- Appendix C. Size of the average harem -- Appendix D. Age criteria for bachelor fur seals -- Appendix E. Escapement of bachelors from the commercial kill -- Appendix F. Calculations for the size of the pup class in 1947 from tag recoveries -- Appendix G. Serial photography on the Pribilofs.

Author : U.S. Fish and Wildlife Service
Publisher :
ISBN 13 :
Total Pages : 200 pages
Book Rating : 4.01/5 ( download)

DOWNLOAD NOW!

Download or read book Population Study of the Alaska Fur-Seal Herd written by U.S. Fish and Wildlife Service and published by . This book was released on 1951 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.21/5 ( download)

DOWNLOAD NOW!

Download or read book The Story of the Pribilof Fur Seals written by and published by . This book was released on 1972 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Victor B. Scheffer
Publisher : Forgotten Books
ISBN 13 : 9780267643332
Total Pages : 84 pages
Book Rating : 4.30/5 ( download)

DOWNLOAD NOW!

Download or read book History of Scientific Study and Management of the Alaskan Fur Seal, Callorhinus Ursinus, 1786-1964 (Classic Reprint) written by Victor B. Scheffer and published by Forgotten Books. This book was released on 2018-02-03 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from History of Scientific Study and Management of the Alaskan Fur Seal, Callorhinus Ursinus, 1786-1964 Nevertheless, the managing agency - the u.s. Department of the Interior4 - will continue to be faced with problems of a diplomatic nature rising from the fact that all Alaskan fur seals feed at times in international waters. A few actually land on foreign soil. Research on the Alaskan seal population has been carried out since the early 1890's on efforts to manage it, not only as a national but also as an international resource. The Department can also expect to face local problems ris ing from the fact that the welfare of seals and the welfare of people are not always compatible. Certain areas of conflict are illustrated by the following questions: Is predation by seals upon commercial fishes of the eastern North Pacific Ocean and Bering Sea economically important? Should tourism to the seal-breeding grounds be encouraged? How can the future livelihood of the people of the Pribilof Islands be ensured when their population is outgrowing its local base of support (the seal harvest)? What should be the respective roles of the Federal Government and the State of Alaska in conserving the seal herd? The purpose of the present history is to trace the evolution of zoological research on the fur seals, to discuss the origin and development of research ideas and techniques, and to point out the contributions of research to the present manage ment structure. In discussing past research, we will describe not only scientific studies but also changes in fur seal manage ment and fur seal legislation which have, from time to time, made the studies necessary. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Author : United States. National Advisory Committee on Oceans and Atmosphere
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.23/5 ( download)

DOWNLOAD NOW!

Download or read book North Pacific Fur Seals written by United States. National Advisory Committee on Oceans and Atmosphere and published by . This book was released on 1985 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Ralph C. Baker
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.72/5 ( download)

DOWNLOAD NOW!

Download or read book The Northern Fur Seal written by Ralph C. Baker and published by . This book was released on 1970 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Booklet describing early history of fur sealing; the distribution and movement of northern fur seals; Callorhinus Ursinus, their food, physical characteristics, reproduction and mortality and disease, management and research; sealing on the Pribilof Islands and processing and sale of fur seal skins.

Author : Francis Riley
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.86/5 ( download)

DOWNLOAD NOW!

Download or read book Fur Seal Industry of the Pribilof Islands, 1786-1965 written by Francis Riley and published by . This book was released on 1967 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : John P. Croxall
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.81/5 ( download)

DOWNLOAD NOW!

Download or read book Status, Biology, and Ecology of Fur Seals written by John P. Croxall and published by . This book was released on 1987 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: 14 species summaries, 12 contributed papers and 5 rapporteurs' reports on fur seals throughout the world including the Pribilof Islands and Antarctica.

Author : Hiroshi Kajimura
Publisher :
ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.85/5 ( download)

DOWNLOAD NOW!

Download or read book Opportunistic Feeding of the Northern Fur Seal, Callorhinus Ursinus, in the Eastern North Pacific Ocean and Eastern Bering Sea written by Hiroshi Kajimura and published by . This book was released on 1984 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author :
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.10/5 ( download)

DOWNLOAD NOW!

Download or read book Setting the Annual Subsistence Harvest of Northern Fur Seals on the Pribilof Islands written by and published by . This book was released on 2005 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: