The Design and Testing of a Divided Trawl for Comparative Fishing Experiments PDF Download
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Author: J. H. B. Robertson
Publisher:
ISBN:
Category : Fishing nets
Languages : en
Pages : 20
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Book Description
Author: J. H. B. Robertson
Publisher:
ISBN:
Category : Fishing nets
Languages : en
Pages : 20
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Book Description
Author: K. P. Biswas
Publisher:
ISBN: 9789351307723
Category :
Languages : en
Pages :
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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:
Publisher:
ISBN:
Category : Fish trade
Languages : en
Pages : 800
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 208
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Book Description
Author: Steve Eayrs
Publisher: Food & Agriculture Org.
ISBN: 9789251056745
Category : Business & Economics
Languages : en
Pages : 126
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Book Description
Bycatch is the unwanted or non-target part of the catch taken by fishermen. It is either discarded at sea or used for human or animal consumption. The capture of bycatch may pose a threat to species diversity and ecosystem health because this part of the catch is usually unregulated. In tropical shrimp-trawl fisheries, bycatch often consists of juvenile food-fish species and is therefore a threat to food security and sustainable fisheries production. Bycatch is a global problem that must be addressed. This Guide to Bycatch Reduction in Tropical Shrimp-Trawl Fisheries is designed for fishermen, net makers, fishing technologists and others interested in a practical guide to the design, use and operation of effective bycatch reduction devices. Fishery managers, policy-makers and legislators will find this guide useful to help develop specifications governing the design and application of these devices in a shrimptrawl fishery. The issue of bycatch is not going away and scrutiny of fishing activity is increasing. All fishermen are strongly urged to use appropriate bycatch reduction measures to help maintain the productivity of the fishery and the long term prosperity of the fishing industry. By responding appropriately, fishermen can help to protect the marine environment and assist global food security both now and in the future. Also published in French and Spanish.
Author: National Ocean Survey
Publisher:
ISBN:
Category : Hydrographic surveying
Languages : en
Pages : 96
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Book Description
Author:
Publisher:
ISBN:
Category : Administrative law
Languages : en
Pages : 518
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Book Description
Special edition of the Federal Register, containing a codification of documents of general applicability and future effect ... with ancillaries.
Author:
Publisher:
ISBN:
Category : Delegated legislation
Languages : en
Pages : 356
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Book Description
Author: Eayrs, S., Fuentevilla, C.
Publisher: Food & Agriculture Org.
ISBN: 9251349061
Category : Technology & Engineering
Languages : en
Pages : 142
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Book Description
This technical report describes efforts to mitigate bycatch through gear modifications and adaptations in the tropical shrimp-trawl fisheries of over 30 countries. It provides a summary of efforts by each country and then synthesizes them to identify and describe best practice. A best practice in bycatch reduction is the application or adoption of appropriate, recognized approaches to modifying fishing gear, with the objective of reducing bycatch to the greatest extent practicable. This information serves as a benchmark to identify countries that are taking appropriate steps to reduce bycatch and those that are not. It also provides context from which the outcomes of research on bycatch reduction can be evaluated and compared, including the identification of effective bycatch reduction devices, and serves to identify future research priorities. In the context of this report, best practice includes the installation and use of TEDs and BRDs that are optimally rigged and operated so as to reduce bycatch. It also includes the application of appropriate regulations to ensure effective performance, as well as the introduction of effective outreach and extension programmes to enhance and sustain best practice to reduce bycatch.
