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By-catch and discarding practices in five Algarve (southern Portugal) metiers

2001Journal article Restricted access
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dc.contributor.authorBorges, Teresa C.
dc.contributor.authorErzini, Karim
dc.contributor.authorBentes, L.
dc.contributor.authorLima Costa, Maria Emília
dc.contributor.authorGonçalves, J. M. S.
dc.contributor.authorLino, P. G.
dc.contributor.authorPais, C.
dc.contributor.authorRibeiro, J.
dc.date.accessioned2016-12-14T16:22:22Z
dc.date.available2016-12-14T16:22:22Z
dc.date.issued2001
dc.description.abstractThe catches and discards of trawlers, seiners and trammel netters were studied in the Algarve (southern Portugal) using observers onboard commercial fishing vessels. Species diversity was high, with 236 species recorded as occasionally, frequently or regularly discarded. Mean discard rates per trip were 0.13, 0.20, 0.27, 0.62 and 0.70, respectively, for trammel nets, demersal purse seines, pelagic purse seines, fish trawls and crustacean trawls, with high variability in terms of discard volume and discard rate, This was especially so for se ncrs where from 0 to 100% of the total catch might be discarded. No significant relationships were found between discard quantity or discard rate and characteristics of the fishing vessels sampled within each metier (total length, TAB, hp, kW). Based on the above discard rates and the official landings, it was estimated that in 1996, Algarve trawlers discarded 9000-13000 tonnes (t) while seiners discarded 5500-8200 t. Discarding practices in these fisheries are reviewed and the reasons for discarding are presented by species and metier basis. The results support the need for more studies on the factors contributing to discarding, variability in discard quantities and rates, the fate of discards and their importance to the marine ecosystem, and on ways of reducing by-catch and discarding in these fisheries.
dc.identifier.issn0175-8659
dc.identifier.otherAUT: TBO00930; KER00543; JGO02808;
dc.identifier.urihttp://hdl.handle.net/10400.1/8770
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relation.isbasedonWOS:000171077400002
dc.titleBy-catch and discarding practices in five Algarve (southern Portugal) metiers
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage114
oaire.citation.issue3
oaire.citation.startPage104
oaire.citation.titleJournal Of Applied Ichthyology
oaire.citation.volume17
person.familyNameBorges
person.familyNameErzini
person.familyNameBentes
person.familyNameLima Costa
person.familyNameGonçalves
person.familyNameLino
person.givenNameTeresa Cerveira
person.givenNameKarim
person.givenNameLuis
person.givenNameMaria Emília
person.givenNameJorge Manuel Santos
person.givenNamePedro
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rcaap.rightsrestrictedAccess
rcaap.typearticle
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