Hvalradets Skrifter
Author : Hvalrådet
Publisher :
Page : 280 pages
File Size : 38,48 MB
Release : 1946
Category : Marine biology
ISBN :
Author : Hvalrådet
Publisher :
Page : 280 pages
File Size : 38,48 MB
Release : 1946
Category : Marine biology
ISBN :
Author : John Sheail
Publisher : CABI
Page : 341 pages
File Size : 38,8 MB
Release : 2024-09-13
Category : Science
ISBN : 1789182417
Antarctic Whaling explores how British whalers came to claim so large a share of the whales taken from the Southern Ocean in the first half of the twentieth century, and, more particularly, where, when, how and why the British Government came to play so large a part in whaling history through its endeavour to regulate the whaling grounds.
Author : United States. National Marine Fisheries Service
Publisher :
Page : 274 pages
File Size : 17,7 MB
Release : 1977
Category : Bowhead whale
ISBN :
Author : New Zealand. Marine Department
Publisher :
Page : 708 pages
File Size : 15,34 MB
Release : 1927
Category : Fisheries
ISBN :
Author : United States. National Marine Fisheries Service
Publisher :
Page : 160 pages
File Size : 10,46 MB
Release : 1977
Category : Bowhead whale
ISBN :
Author : U.S. Fish and Wildlife Service
Publisher :
Page : 448 pages
File Size : 50,10 MB
Release : 1954
Category : Fisheries
ISBN :
Author : Tim D. Smith
Publisher : Cambridge University Press
Page : 415 pages
File Size : 45,3 MB
Release : 1994-07-21
Category : Nature
ISBN : 052139032X
In this 1994 book, Tim Smith examines the economic and political pressures which have affected fisheries science, and the problems that still face it. This is a fascinating resource for all those interested in the way fisheries science has developed in the last 150 years.
Author :
Publisher :
Page : 336 pages
File Size : 15,19 MB
Release : 1968
Category : Oceanography
ISBN :
Author : Richard Ellis
Publisher : JHU Press
Page : 207 pages
File Size : 38,10 MB
Release : 2017-05-08
Category : Science
ISBN : 1421421836
The only book dedicated to the mysterious beaked whale, this beautiful volume combines full-color illustrations with fascinating facts. Beaked whales have been shrouded in mystery for most of the twentieth century. Denizens of deep, remote ocean waters and highly resistant to life in captivity, they have proven notoriously difficult for humans to observe. Over the past few decades, however, scientists have gained a better understanding of this distinct group of cetaceans, deciphering the natural history of the twenty-two beaked whale species. Here, famed artist and naturalist Richard Ellis and leading beaked whale researcher James G. Mead bring these elusive marine mammals into the limelight. Beaked whales’ generous life spans can extend well past 70 years. They spend their decades diving to extreme depths in search of prey, which they capture by expanding their oral cavity suddenly to suck in the squid or fish they are hunting. It appears that these sleek predators may engage in fierce, clandestine aquatic battles, as the bodies of many males are covered in scars. Because many species are only somewhat larger than dolphins, they are often confused with porpoises; however, some larger beaked whale species may grow to 40 feet. These enigmatic and compelling creatures need our help; their numbers are declining, perhaps due to the damaging effects of naval sonar on their sophisticated auditory systems. In Ellis and Mead’s book, the beaked whales finally get their due. The duo provides a combination of captivating stories about the species, original Richard Ellis art, and photos from leading natural history photographers. The result is an accessible, beautiful book—the first of its kind on this unusual group of cetaceans. Meet the beaked whales, and enjoy the fascinating and mysterious world in which they live.
Author : Mark Schwartz
Publisher : Springer Science & Business Media
Page : 566 pages
File Size : 29,17 MB
Release : 2003-10-31
Category : Science
ISBN : 1402015801
Phenology is the study of plant and animal life cycle events, which are triggered by environmental changes, especially temperature. Wide ranges of phenomena are included, from first openings of leaf and flower buds, to insect hatchings and return of birds. Each one gives a ready measure of the environment as viewed by the associated organism. Thus, phenological events are ideal indicators of the impact of local and global changes in weather and climate on the earth's biosphere. Assessing our changing world is a complex task that requires close cooperation from experts in biology, climatology, ecology, geography, oceanography, remote sensing and other areas. This book is a synthesis of current phenological knowledge, designed as a primer on the field for global change and general scientists, students and interested members of the public. With contributions from a diverse group of over fifty phenological experts, covering data collection, current research, methods and applications, it demonstrates the accomplishments and potential of phenology as an integrative environmental science.