Report from the Workshop on Lake Use by Atlantic Salmon in Newfoundland, Canada PDF Download
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Author: Canada. Dept. of Fisheries and Oceans. Science
Publisher: St. John's, Nfld. : Science Branch, Department of Fisheries and Oceans
ISBN:
Category : Atlantic salmon
Languages : en
Pages : 54
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Author: Canada. Dept. of Fisheries and Oceans. Science
Publisher: St. John's, Nfld. : Science Branch, Department of Fisheries and Oceans
ISBN:
Category : Atlantic salmon
Languages : en
Pages : 54
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Book Description
Author: P. Ryan
Publisher:
ISBN:
Category : Atlantic salmon
Languages : en
Pages : 0
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Author: Canadian Society of Environmental Biologists. Meeting
Publisher: University of Regina Press
ISBN: 9780889771024
Category : Restoration ecology
Languages : en
Pages : 144
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Book Description
Presents proceedings of a conference on the ecologically based reclamation and restoration of lands and waters disturbed by human activities. Topics of papers included restoration of mined lands, disturbed wetlands, soils disturbed by seeding and irrigation practices, lands and waters disturbed by removal and dumping of urban snow, and more general topics including effects of climate change over a major river basin and the role of environmental impact assessment in ecological restoration. The final paper is an evaluation of the ecological restoration situation in Canada. Although papers were presented from most parts of Canada, emphasis was on the Canadian prairies.
Author: Bror Jonsson
Publisher: Springer Science & Business Media
ISBN: 9400711891
Category : Science
Languages : en
Pages : 720
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Book Description
Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance. The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species.
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 412
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Author:
Publisher:
ISBN:
Category : Aquatic sciences
Languages : en
Pages : 560
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1318
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Author: Cynthia A. Staicer
Publisher:
ISBN:
Category : Acid deposition
Languages : en
Pages : 290
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Book Description
The Kejimkujik Watershed Study (KWS) was initiated in 1978 in response to growing concerns about the possible harmful effects on the environment of long range transport of air pollutants, particularly acid rain. It is one of five calibrated watershed studies in Canada that represent a range of climatic conditions, terrain sensitivities, and rates of atmospheric acidic deposition. This report presents the proceedings of a workshop on the study, covering programs and concepts in integrated monitoring and research; monitoring global change; research and monitoring in and around Kejimkujik National Park; monitoring and research of surface waters, lakes and streams, and forests and watersheds; and the organization and interpretation of Kejimkujik research station establishment. Summary reports are given on watershed studies in the Experimental Ponds Area of Newfoundland, the Integrated Forest Studies Cooperative in Vermont, and the Humic Lake acidification experiment in Norway. Highlights of an open discussion on future activities are also included.
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 282
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 43
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