标题：The development of a rigorous sampling
methodology for a long-term annual index of
recruitment for finfish species from south-western
Western Australia
期刊名称：Western Australia. Fisheries Department. Fisheries Research Reports
印刷版ISSN：1035-4549
出版年度：2006
卷号：154
出版社：Government of Western Australia / Department of Fisheries
摘要：This study has determined the optimal strategies to achieve statistically robust indices
of recruitment of five key finfish species in south-western Australia. For another two
species such indices could not be established. The sampling strategies developed will
initially focus on the most appropriate location, month, and lunar phase, after which finetuning
of the sampling activity will be undertaken with respect to time of day, tide height,
weather conditions etc. A significant outcome from the project is that five finfish species
have a sampling strategy for recruits that can be utilized as a monitoring program for
the recreational and commercial fisheries that target these species. Because it is difficult
to attract and retain research funds for these minor fishery species, demonstration of an
optimal sampling strategy that can be used to predict fishery performance is an invaluable
and relatively cheap stock assessment tool. An ongoing and cost¨Ceffective monitoring
program that is under-pinned by a detailed investigation of variability in abundance
of recruits and that demonstrates a link between recruits and subsequent abundance of
catchable age classes will facilitate better long-term management of the key inshore
finfish stocks in south-western Australia. This is particularly relevant now that Western
Australia has developed, and is currently implementing, an integrated approach to fisheries
management, whereby the total exploitation on any one fish stock will be managed through
simultaneous consideration of all exploitive sectors.
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