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010   $a1-280-18447-7
010   $a9786610184477
010   $a0-309-50815-0
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100   $a20021120d2002      uy         0
101 0 $aeng
135   $aur|n|---|||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aEffects of trawling and dredging on seafloor habitat /$fCommittee on Ecosystem Effects of Fishing: Phase 1--Effects of Bottom Trawling on Seafloor Habitats, Ocean Studies Board, Division on Earth and Life Studies, National Research Council
205   $a1st ed.
210   $aWashington, D.C. ;$a[Great Britain] $cNational Academy Press$dc2002
215   $a1 online resource (x, 126 pages) $cillustrations (some color), color maps
300   $aDescription based upon print version of record.
311   $a0-309-08340-0 
320   $aIncludes bibliographical references.
327   $a""Front Matter""; ""Preface""; ""Contents""; ""Executive Summary""; ""1 Introduction""; ""2 Characterization of Fishing Gear""; ""3 Effects of Trawling and Dredging""; ""4 Habitat Mapping and Distribution of Fishing Effort""; ""5 Analyzing the Risk to Seafloor Habitats""; ""6 Management Options""; ""7 Findings and Recommendations""; ""References""; ""Appendix A Committee and Staff Biographies""; ""Appendix B Regional Distribution of Fishing Effort""; ""Appendix C Mapping Tools""; ""Appendix D Workshop Agendas""; ""Appendix E Acronyms""
330   $aConcerns 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.
606   $aTrawls and trawling$xEnvironmental aspects
606   $aMarine resources conservation
606   $aOcean bottom
606   $aFisheries$xEnvironmental aspects
615  0$aTrawls and trawling$xEnvironmental aspects.
615  0$aMarine resources conservation.
615  0$aOcean bottom.
615  0$aFisheries$xEnvironmental aspects.
676   $a639.22
801  0$bMiAaPQ
801  1$bMiAaPQ
801  2$bMiAaPQ
906   $aBOOK
912   $a9910818927603321
996   $aEffects of trawling and dredging on seafloor habitat$93932363
997   $aUNINA