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Author:
Publisher:
ISBN:
Category : Trawls and trawling
Languages : en
Pages : 54
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Book Description
Author:
Publisher:
ISBN:
Category : Trawls and trawling
Languages : en
Pages : 54
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309083400
Category : Science
Languages : en
Pages : 137
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Book Description
Concerns over the potential ecological effects of fishing have increased with the expansion of fisheries throughout the marine waters of the United States. Effects of Trawling and Dredging on Seafloor Habitat describes how assessment of fishing impacts depends on gear type, number and location of bottom tows, and the physical and biological characteristics of seafloor habitats. Many experimental studies have documented acute, gear-specific effects of trawling and dredging on various types of habitat. These studies indicate that low mobility, long-lived species are more vulnerable to towed fishing gear than short-lived species in areas where the seabed is often disturbed by natural phenomena. Trawling and dredging may also change the composition and productivity of fish communities dependent on seafloor habitats for food and refuge. The scale of these impacts depends on the level of fishing effort. This volume presents color maps of fishing effort for all regions with significant bottom trawl or dredge fisheries-the first time that such data has been assembled and analyzed for the entire nation.
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251099294
Category : Technology & Engineering
Languages : en
Pages : 249
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Book Description
These studies on the role of trawl fisheries for food security and the potential impacts of management measures reveal major differences across countries in fishing practices, including crew demographics and income-sharing arrangements.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 686
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Author: J. C. Brabant
Publisher: Food & Agriculture Org.
ISBN: 9789251005828
Category : Sports & Recreation
Languages : en
Pages : 52
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Book Description
This paper contains the designs of high opening bottom trawls which could be suitable for 50-180 hp small-scale fishing trawlers operating in coastal waters and large lakes. All necessary information for the construction of these trawls as well as for the preparation and adjustment of their rigging is supplied. This information is especially intended for small-scale fisheries skippers, and skipper-owners, as well as fishing net makers. Fishery officers, technicians, instructors, extension workers, especially in developing countries, are also likely to be interested.
Author: K. P. Biswas
Publisher:
ISBN: 9789351307723
Category :
Languages : en
Pages :
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Author: National Ocean Survey
Publisher:
ISBN:
Category : Hydrographic surveying
Languages : en
Pages : 96
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 634
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Book Description
Author: Canada. Parliament
Publisher:
ISBN:
Category : Canada
Languages : en
Pages : 1104
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Book Description
"Report of the Dominion fishery commission on the fisheries of the province of Ontario, 1893", issued as an addendum to vol. 26, no. 7.
Author: Canada. Department of Marine and Fisheries
Publisher:
ISBN:
Category :
Languages : en
Pages : 502
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Book Description
