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dc.contributor.authorHall-Spencer, Jason
dc.date.accessioned2013-02-20T12:17:53Z
dc.date.available2013-02-20T12:17:53Z
dc.date.issued2000-10
dc.identifier.issn1054-3139
dc.identifier.issn1095-9289
dc.identifier.urihttp://hdl.handle.net/10026.1/1362
dc.description.abstract

Maerl beds are mixed sediments built by a surface layer of slow-growing, unattached coralline algae that are of international conservation significance because they create areas of high biodiversity. They are patchily distributed throughout Europe (to ∼ 30 m depth around the British Isles and to ∼ 120 m depth in the Mediterranean) and many are affected by towed demersal fishing. We report the effects of Newhaven scallop dredges on a previously unfished maerl bed compared with the effects on similar grounds that have been fished commercially in the Clyde Sea area, Scotland. Sediment cores were taken to assess the population density of live maerl thalli prior to scallop dredging on marked test and control plots. These plots were then monitored biannually over a four-year period. Live maerl thalli were sparsely distributed at the impacted site, and experimental dredging had no discernible effect on their numbers. The previously unfished ground had dense populations of live maerl and scallops (both Aequipecten opercularis and Pecten maximus). While counts of live maerl remained high on the control plot, scallop dredging led to a >70% reduction with no sign of recovery over the subsequent four years. The vulnerability of maerl and associated benthos (e.g., the delicate bivalve, Limaria hians) is discussed in relation to towed demersal fishing practices. © 2000 International Council for the Exploration of the Sea.

dc.format.extent1407-1415
dc.languageen
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subjectbenthos
dc.subjectecosystem effects
dc.subjectlong-term impact
dc.subjectmaerl beds
dc.subjectscallop dredging
dc.titleScallop dredging has profound, long-term impacts on maerl habitats
dc.typejournal-article
dc.typeConference Proceeding
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000165979200014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.issue5
plymouth.volume57
plymouth.publication-statusPublished
plymouth.journalICES Journal of Marine Science
dc.identifier.doi10.1006/jmsc.2000.0918
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Biological and Marine Sciences
plymouth.organisational-group/Plymouth/PRIMaRE Publications
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA07 Earth Systems and Environmental Sciences
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dc.identifier.eissn1095-9289
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1006/jmsc.2000.0918
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review


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