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Snapper recruitment in the Hauraki Gulf

By: Francis, M.P. (NIWA. Wellington).
Contributor(s): Langley, A.D. (NIWA. Auckland) | Gilbert, D.J. (NIWA. Wellington) | NIWA Wellington (N.Z.).
Material type: materialTypeLabelBookSeries: New Zealand fisheries assessment research document ; 95/17.Publisher: Wellington, NZ : [unpublished], 1995Description: 27 p.Subject(s): SNAPPER | RECRUITMENT | HAURAKI GULF | NEW ZEALAND | STOCK CONTROLOnline resources: Click here to access online
Incomplete contents:
If recruitment variation is large enough to have a significant impact on population size, estimates of recruiting year class strength (YCS) are essential for predicting future stock sizes. In this report, data from a time series of trawl surveys are used to quantify snapper recruitment variation. We document the methods used to estimate YCS from the trawl surveys and describe the relationship between snapper recruitment and water temperature. That relationship is then used to predict past and future snapper recruitment.
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Item type Current location Call number Vol info Copy number Status Date due Barcode
PDF PDF WELLINGTON
ONLINE
ELECTRONIC 95/17 1 Not for loan 105394-1001

40 refs; 12 figs; 3 tables; 1 appendix

"Not to be cited without permission of the author"

If recruitment variation is large enough to have a significant impact on population size, estimates of recruiting year class strength (YCS) are essential for predicting future stock sizes. In this report, data from a time series of trawl surveys are used to quantify snapper recruitment variation. We document the methods used to estimate YCS from the trawl surveys and describe the relationship between snapper recruitment and water temperature. That relationship is then used to predict past and future snapper recruitment.

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