At Night the Salmon Move PDF Download

Author: Raymond Carver
Publisher:
ISBN:
Category : American poetry
Languages : en
Pages : 74

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Author: Raymond Carver
Publisher:
ISBN:
Category : Night in literature
Languages : en
Pages : 1

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Author: Cornelis Groot
Publisher: UBC Press
ISBN: 9780774859868
Category : Nature
Languages : en
Pages : 534

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Book Description
Every year, countless juvenile Pacific salmon leave streams and rivers on their migration to feeding grounds in the North Pacific Ocean and the Bering Sea. After periods ranging from a few months to several years, adult salmon enter rivers along the coasts of Asia and North America to spawn and complete their life cycle. Within this general outline, various life history patterns, both among and within species, involve diverse ways of exploiting freshwater, estuarine, and marine habitats. There are seven species of Pacific salmon. Five (coho, chinook chum, pink, and sockeye) occur in both North America and Asia. Their complex life histories and spectacular migrations have long fascinated biologists and amateurs alike. Physiological Ecology of Pacific Salmon provides comprehensive reviews by leading researchers of the physiological adaptations that allow Pacific Salmon to sustain themselves in the diverse environments in which they live. It begins with an analysis of energy expenditure and continues with reviews of locomotion, growth, feeding, and nutrition. Subsequent chapters deal with osmotic adjustments enabling the passage between fresh and salt water, nitrogen excretion and regulation of acid-base balance, circulation and gas transfer, and finally, responses to stress. This thorough and authoritative volume will be a valuable reference for students and researchers of biology and fisheries science as they seek to understand the environmental requirements for the perpetuation of these unique and valuable species.

Author: Dr Sandra Lee Kleppe
Publisher: Ashgate Publishing, Ltd.
ISBN: 1472411676
Category : Literary Criticism
Languages : en
Pages : 201

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Best known as one of the great short story writers of the twentieth century, Raymond Carver also published several volumes of poetry and considered himself as much a poet as a fiction writer. Sandra Lee Kleppe focuses particularly on the complex literary and scientific systems that influenced Carver’s development as a writer as she makes a case for the quality of Carver’s poetic output and the centrality of poetry to Carver’s career.

Author: R.J.F. Smith
Publisher: Springer Science & Business Media
ISBN: 3642823483
Category : Science
Languages : en
Pages : 258

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Fish migration is important and spectacular. Migratory fish gather energy in one portion of the environment and transport it to other areas, where it often becomes available to humans or to other elements in the ecosystem. Migration brings fish into situations that allow easy harvest as they concentrate along migration routes. Their journeys also make them vulnerable to human intereference at critical points along their route. Salmon, for example, may harvest plankton in the open ocean and transport that food energy to coastal and inland regions, where it is captured by fisheries or deposited in inland streams and utilized by the flora and fauna of the region. These salmon are able to complete journeys of thousands of kilometers from their natal streams to oceanic feeding grounds and back to the same home streams, an accomplishment that strains our credi bili ty . We now understand some of the timing and guiding stimuli used in these migrations, and mechanisms can be logically proposed, on the basis of the established abilities of fishes, to account for the unexplained portions of the migrations. There is no single factor guiding these fish. Instead, they are dependent on the presence in their environment of a great variety of appropriate orienting and timing stimuli. These stimuli are vulnerable to human interference. The more widespread and easily available the information on these requirements, the more readily fish can be protected from such interference.

Author: Northwest and Alaska Fisheries Center (U.S.)
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 402

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Author: Rafael Català
Publisher: Scarecrow Press
ISBN: 9780810811690
Category : Literary Criticism
Languages : en
Pages : 512

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The Index of American Periodical Verse is an important work for contemporary poetry research and is an objective measure of poetry that includes poets from the United States, Canada, and the Caribbean as well as other lands, cultures, and times. It reveals trends in the output of particular poets and the cultural influences they represent. The publications indexed cover a broad cross-section of poetry, literary, scholarly, popular, general, and "little" magazines, journals, and reviews.

Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 756

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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 348

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Book Description

Author: Wayne Lynch
Publisher: JHU Press
ISBN: 1421439425
Category : Nature
Languages : en
Pages : 353

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Book Description
An unprecedented visual and scientific journey into the secret world of bears. In Bears of the North, renowned wildlife photographer, naturalist, and bestselling author Wayne Lynch offers us a work of scintillating science and stunning beauty. Following polar bears, brown bears, and American and Asiatic black bears through the seasons, this journey is an insider's view of hibernation's mysteries and the birth of cubs in winter; the mating rituals and voracious appetites of spring; hunting, fishing, and encounters with neighbors during summer; and the feeding frenzy and exuberant play of autumn. Dispelling the stereotypes and untruths—but none of the magic—surrounding these magnificent animals, Lynch comments on the latest scientific discoveries related to the biology, behavior, and ecology of bears. He describes how satellite telemetry has revealed the purpose behind the meanderings of bears and the great distances they sometimes cover on land and in water. He also shows how DNA analysis can teach us about the relatedness of bears within a population, even revealing the identity of a particular cub's father. Taking us out into the wilds of the tundra and forests to share his firsthand observations of the marvelous bears of the Northern Hemisphere, Lynch describes their survival strategies and the threats they face from habitat fragmentation and global climate change. Lynch's fascinating narrative is enhanced by over 150 gorgeous, original color photographs that capture bears in their habitats, including appearances of the elusive moon bear, fierce polar bear battles, and rare images of mothers' intimate moments with their cubs. Informed by Lynch's nearly forty years of experience observing and photographing bears in the wild, and aided by sophisticated digital photo technologies, Bears of the North is an unrivaled collection of enthralling and informative portraits of bears in their natural environments.