Download or read book Fishery Management Plan and Environmental Impact Statement for the Tanner Crab Off Alaska written by North Pacific Fishery Management Council and published by . This book was released on 1977 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Bering Sea Ecosystem written by National Research Council and published by National Academies Press. This book was released on 1996-05-08 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bering Sea, which lies between the United States and Russia, is one of the most productive ecosystems in the world and has prolific fishing grounds. Yet there have been significant unexplained population fluctuations in marine mammals and birds in the region. The book examines the Bering Sea ecosystem's dynamics and the relationship between man and the ecosystem, in order to identify potential reasons for the population fluctuations as well as identify ways the Sea's living resources can be better managed by government.
Download or read book Timelines of Nearly Everything written by Manjunath.R and published by Manjunath.R. This book was released on 2021-07-03 with total page 2658 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book takes readers back and forth through time and makes the past accessible to all families, students and the general reader and is an unprecedented collection of a list of events in chronological order and a wealth of informative knowledge about the rise and fall of empires, major scientific breakthroughs, groundbreaking inventions, and monumental moments about everything that has ever happened.
Download or read book Ethology and Behavioral Ecology of Sea Otters and Polar Bears written by Randall W. Davis and published by Springer. This book was released on 2022-07-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sea otters and polar bears are carnivorous marine mammals that still resemble their terrestrial ancestors. Compared with Cetacea (whales and dolphins), Sirenia (dugongs and manatees), and Pinnipedia (seals, sea lions, and walrus), they are less adapted for an aquatic life and the most recently evolved among marine mammals. Sea otters are amphibious but seldom come ashore, and polar bears primarily occur on sea ice or along the shore. When at sea, both species spend most of their time swimming at the surface or making short, shallow dives when foraging or pursuing prey. Indeed, polar bears rarely pursue seals in water. Nevertheless, polar bears are powerful swimmers and will stalk seals from the water. As with many other large carnivores, they are solitary hunters. Although sea otters are gregarious and form aggregations at sea called rafts, they are primarily asocial. Except during mating, the principal interaction among sea otters occurs between a female and offspring during the six-month dependency period. In large carnivores (e.g., wolves and lions) that feed on ungulates, sociality and cooperation are favored because of the need to capture large prey and defend carcasses. Polar bears, which are the largest terrestrial carnivore, are solitary hunters of seals and are neither gregarious nor social. Males and females briefly associate during courtship and mating. During this time, males aggressively compete for females. At other times, males generally avoid each other except for aggregations of males that form while summering on land, and females with cubs avoid males, which are known for infanticide. As with sea otters, the interaction of polar bears outside of mating occurs between a female and her offspring during the 2-3 year dependency period. This interaction is critically important when altricial cubs are born in the winter den. This book provides new insight into the ethology and behavioral ecology of sea otters and polar bears. Each chapter reviews the discoveries of previous studies and integrates recent research using new techniques and technology. The authors also address historic and current anthropogenic challenges for their survival as climate change alters entire marine ecosystems.
Download or read book Arctic National Wildlife Refuge written by U.S. Fish and Wildlife Service. Region 7 and published by . This book was released on 1988 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crustacean Egg Production written by Armand Kuris and published by CRC Press. This book was released on 1990-06-01 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title discusses egg formation, release, and development, variations in life history patterns, population, and fisheries aspects regarding crustaceans.
Download or read book Alaska Peninsula National Wildlife Refuge written by U.S. Fish and Wildlife Service. Region 7 and published by . This book was released on 1985 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Environmental History of North Sea Ling and Cod Fisheries 1840 1914 written by René Taudal Poulsen and published by . This book was released on 2007 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Harvest of Fish and Wildlife written by Kevin L. Pope and published by CRC Press. This book was released on 2021-06-06 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: Harvest of Fish and Wildlife: New Paradigms for Sustainable Management unites experts in wildlife and fishery sciences for an interdisciplinary overview of harvest management. This book presents unique insights for embracing the complete social-ecological system to ensure a sustainable future. It educates users on evolutionary and population dynamics; social and political influences; hunter and angler behavior; decision processes; impacts of regulations; and stakeholder involvement. Features: Written by twenty-four teams of leading scientists and managers. Promotes transparent justification for fishing and hunting regulations. Provides examples for integrating decision making into management. Emphasizes creativity in management by integrating art and science. This book appeals to population biologists, evolutionary biologists and social scientists. It is a key resource for on-the-ground managers and research scientists developing harvesting applications. As the book’s contributors explain: “Making decisions that are robust to uncertainty...is a paradigm shift with a lot of potential to improve outcomes for fish and wildlife populations.” –Andrew Tyre and Brigitte Tenhumberg “Temporal shifts in system states...must somehow be anticipated and dealt with to derive harvest policies that remain optimal in the long term.” –Michael Conroy “Proactive, effective management of sportspersons...will be essential in the new paradigm of harvest management.” –Matthew Gruntorad and Christopher Chizinski
Download or read book Seas at the Millennium written by Charles R. C. Sheppard and published by . This book was released on 2000 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans un passé assez récent, un intérêt sans précédent s'est développé concernant les ressources globales. Nous nous rendons maintenant compte que les ressources biologiques sont loin d'être illimitées et pendant les dernières décennies du 20ème siècle, des efforts ont débuté pour contrôler nos usages de l'environnement et qui agissent les uns avec les autres dans les écosystèmes dont nous dépendons finalement. Le projet "Mers au millénaire": Une Evatuation Environmentale sur la zone côtière couvre le secteur où vit plus d'un quart de l'humanité, et jusque au bas du plateau continental. Ces trois livres se concentrent sur la biosphère où les interactions de l'homme avec les mers et leurs systèmes biologiques et physiques sont le plus sensibles. 135 chapitres écrits par les experts internationaux et les scientifiques travaillant dans ce domaine offrent un sommaire unique des mers et des océans du monde. À la fin du millénaire les auteurs à travers le monde ont examiné l'état de nos habitats marins et côtiers. Pour la première fois, ils ont uni leurs efforts de par le monde pour s'assurer que ces habitats restent dans un état de fonctionnement durable et stable; l'information a été documentée et assemblée dans une source bibliographique unique. "Mers au millénaire" fournit aux scientifiques dans le monde entier une occasion unique pour s'enrichir de toutes ces expériences. Les trois volumes de "Mers au millénaire" couvrent des chapîtres d'importance globale et régionale comme : description biologique des eaux côtières et du plateau continental; développement et utilisation de la zone côtière; effets des dragages et autres techniques d'accrétion sédimentaire; effet dans le temps des déversement de polluants;de pêche; méthodes et techniques de gestion utilisées pour gérer en continu les écosystèmes. Plus de 800 figures comprenant des cartes, les graphiques, les dessins au trait et les photograph.
Download or read book Report to Industry written by Center for Drug Evaluation and Research (U.S.) and published by . This book was released on 1996 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Blood Types in Pacific Salmon written by George J. Ridgway and published by . This book was released on 1960 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intraspecific differences in erythrocyte antigens (blood types) were shown to occur in four species of Pacific salmon, the sockeye or red salmon (Oncorhynchus nerka), the chinook or king salmon (O. tshawytscha), the chum salmon (O. keta), and the pink salmon (O. gorbuscha). Antisalmon-erythrocyte sera prepared in rabbits and chickens were used after absorption of species-specific antibodies. Some of these blood types were shown to differ in their frequency of occurrence between different geographic races. In addition, isoimmunizations were prepared and at least eight different patterns of antigenic composition were displayed by the cells tested. These results indicate that considerable antigenic diversity exists in salmon. Reagents to detect valuable markers for the investigation of geographic races of salmon should be obtained through further research.
Download or read book Modern Huntsman written by Tyler Sharp and published by . This book was released on 2018-02 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: By design, Volume One is of an introductory nature, which will help lay the foundation for the path ahead, and explain a bit more about where we're going. Our contributor list includes Charles Post (Guest Editor), Chris Douglas (Guest Editor), Jillian Lukiwski, John Dunaway, Eamon Waddington, Travis Gillett, Camrin Dengel, Kaleb White, Tanner Johnson, Nicole Belke and Dusan & Lorca Smetana, Adam Foss as well as stories from our Creative Director, Tyler Sharp, and a column from Simon Roosevelt.
Download or read book Lower Cook Inlet Draft Environmental Impact Statement written by and published by . This book was released on 1976 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Western Alaska King Crab written by North Pacific Fishery Management Council and published by . This book was released on 1980 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Draft Environmental Impact Statement for the Bering Sea Aleutian Islands King Crab Fishery Management Plan written by and published by . This book was released on 1981 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bering Sea Aleutian Islands Crab Fisheries written by and published by . This book was released on 2004 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:
