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A note on relating Antarctic krill catch-per-unit-effort measures to abundance trends

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dc.contributor.advisor SAJAR en_ZA Butterworth, D.S. Miller, D.G.M.
dc.coverage.spatial Antarctica en_ZA 2017-12-06T11:37:34Z 2017-12-06T11:37:34Z 1987 1987
dc.description.abstract A crude mathematical framework is developed to describe krill abundance in terms of selected parameters of various aggregation behaviours exhibited by the Antarctic krill (Euphausia superba Dana). The relationship of combination of these parameters to various possible measures of catch-per-unit-effort (CPUE) for the Antarctic krill fishery is considered. The combined index of catch-per-hour (CPH) of trawling multiplied by the inverse of the average inter-concentration search time (IST) is suggested as a possible measure if krill abundance; such an index should be stratified both spatially and by krill aggregation type � this has implications for routine data collection. Models should be constructed to investigate how substantial the non-linearities in the relationship between the index and krill abundance might be. en_ZA
dc.description.sponsorship Sponsored by the National Research Foundation (South Africa) en_ZA
dc.description.statementofresponsibility Antarctic Legacy of South Africa en_ZA
dc.language en_ZA en_ZA
dc.publisher South African Journal of Antarctic Research en_ZA
dc.relation.ispartof Vol 17 No2 en_ZA
dc.rights Copyright en_ZA
dc.subject Antarctica | Snow Petrels | Breeding Sites | Skuas | Storm Petrels en_ZA
dc.title A note on relating Antarctic krill catch-per-unit-effort measures to abundance trends en_ZA
dc.type Article en_ZA
dc.rights.holder SAJAR en_ZA
iso19115.mdconstraints.uselimitation This item and the content of this website are subject to copyright protection. Reproduction of the content, or any part of it, other than for research, academic or non-commercial use is prohibited without prior consent from the copyright holder. en_ZA PDF en_za
iso19115.mdidentification.deliverypoint Antarctic Legacy of South Africa, Faculty of Science, Stellenbosch University. Private Bag X1, Matieland. Stellenbosch. South Africa. en_za
iso19115.mdidentification.electronicmailaddress en-za

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