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dc.contributor.authorHedger, Richard D
dc.contributor.authorDe Eyto, Elvira
dc.contributor.authorDillane, Mary
dc.contributor.authorDiserud, Ola
dc.contributor.authorHindar, Kjetil
dc.contributor.authorMcGinnity, Philip
dc.contributor.authorPoole, Russell
dc.contributor.authorRogan, Ger
dc.date.accessioned2014-08-12T14:22:18Z
dc.date.available2014-08-12T14:22:18Z
dc.date.issued2013-01
dc.identifier.citationRichard D. Hedger,Elvira de Eyto,Mary Dillane,Ola H. Diserud,Kjetil Hindar,Philip McGinnity,Russell Poole,Ger Roganen_GB
dc.identifier.otherDOI: 10.1016/j.fishres.2012.09.015
dc.identifier.urihttp://hdl.handle.net/10793/975
dc.description.abstractEstimates of fish abundance from electrofishing surveys depend on accurate estimation of capture probability. We examine in this paper how estimates of capture probability and abundance of Atlantic salmon from multi-pass removal sampling can be improved by comparing the results of an experimental programme of closed electrofishing sites within selected rivers in west-central Norway, and those obtained from open electrofishing sites established for monitoring long-term juvenile Atlantic salmon population abundance within the Burrishoole catchment, western Ireland. We first establish that the Carle & Strub method provides a more robust estimate of population abundance than the Zippin and Seber methods. We then show how prior information on capture probability may be used to improve the accuracy of the abundance estimate in open sites. We also show that the use of prior information with single-pass electrofishing may improve the accuracy of the abundance estimate so that it is comparable with that of multi-pass electrofishing in terms of stock prediction while requiring less sampling efforten_GB
dc.description.sponsorshipSupported by Norwegian Institute for Nature Research, the Norwegian Directorate for Nature, and the Beaufort Marine Research Award in Fish Population Genetics funded by the Irish Government under the Sea Change Programme.en_GB
dc.language.isoenen_GB
dc.publisherElsevieren_GB
dc.relation.ispartofseriesFisheries Research;Vol 137
dc.subjectoptimizing electrofishingen_GB
dc.subjectzippinen_GB
dc.subjectSeber and Carle & Strub estimation methodsen_GB
dc.subjectcalibrated single-passen_GB
dc.subjectcapture probabilityen_GB
dc.titleImproving abundance estimates from electrofishing removal samplingen_GB
dc.typeTechnical Reporten_GB
refterms.dateFOA2018-01-12T05:32:56Z


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