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dc.contributor.authorKutty, M.K.
dc.contributor.authorDesai, B.N.
dc.date.accessioned1993-11-29T09:56:25Z
dc.date.accessioned2017-09-29T13:47:23Z
dc.date.available1993-11-29T09:56:25Z
dc.date.available2017-09-29T13:47:23Z
dc.date.issued1968
dc.identifier.citationMarine Biology, vol.1(3); 1968; 168-171
dc.identifier.issn0025-3162
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/5957
dc.description.abstractThe efficiency of the van Veen and Foerst `Petersen' grabs used in sampling the bottom fauna near the Cochin Harbour area has been compared in two selected stations having different hydrographic and substratic conditions The results indicate that the heavier grab is generally more efficient than a lighter one, especially when the substratum is sandy An examination of the quantity of the sediment and the total number of species brought by the two grabs showed that the design of the van Veen is superior to the `Petersen' type grab used in the present study However, due to the highly patchy distribution of the organisms the superiority of the van Veen was less evident when a comparison was made of the total number of animals sampled by the two grabs When the distribution is `bunched' it is suggested that samples are drawn, as far as possible, from the same sampling position The grabs should also be of the same weight and biting area
dc.languageen
dc.publisherSpringer
dc.relation.ispartofMar Biol
dc.relation.isreferencedbySCI
dc.subjectAquatic Communities
dc.subject.otherefficiency
dc.subject.otherhydrography
dc.subject.othergrabs
dc.subject.othersamplers
dc.subject.otherbenthos
dc.subject.otherISW, India, Kerala, Cochin
dc.titleA comparison of the efficiency of the bottom samplers used in benthic studies off Cochin
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Kochi, Kerala, India


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