Standardised longline lobster CPUE from Inaccessible Island for the 1996-2005 period

The commercial CPUE series of a resource is often used as an index of population density and consequently population abundance when modelling the dynamics of the underlying population. It is known, however, that a number of other factors besides density may influence the recorded values of CPUE. Whe...

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Bibliographic Details
Main Authors: Johnston, Susan J, Brandão, Anabela, Edwards, C T T, Butterworth, Doug S
Format: Report
Language:English
Published: University of Cape Town 2008
Subjects:
Standardised longline lobster
CPUE
Inaccessible Island
Online Access:http://hdl.handle.net/11427/18565
https://open.uct.ac.za/bitstream/11427/18565/1/Johnston_Standardised_longline_2008.pdf
Description
Summary:The commercial CPUE series of a resource is often used as an index of population density and consequently population abundance when modelling the dynamics of the underlying population. It is known, however, that a number of other factors besides density may influence the recorded values of CPUE. Where sufficient data exist, General Linear Mixed Model (GLMM) standardisation is able to take some of these further effects into account, thereby producing a more reliable index of abundance. This document reports the application of a GLMM standardisation to Jasus tristiani lobster catch and effort data from around Inaccessible Island for the period 1996- 2005.

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