Variants of GLM-standardised lobster CPUE for Tristan da Cunha for the 1997-2009 period

Working Paper

2010

Permanent link to this Item
http://hdl.handle.net/11427/18657
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Johnston_Variants_GLM_standardised_2010.pdf (96.27 KB)
Authors
Johnston, Susan J
Brandão, Anabela
Butterworth, Doug S
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Volume Title
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Publisher

University of Cape Town

Department
Marine Resource Assessment and Management Group
Faculty
Faculty of Science
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http://creativecommons.org/licenses/by/4.0/

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Abstract
Powerboat CPUE data for Tristan island are more limited (in terms of the associated data collected that might provide co-variates for a GLM-standardisation exercise) than the longline CPUE data for the outer three islands. Thus for the four GLM variants applied here to the Tristan powerboat CPUE data, only year and month have been used as fixed effect co-variates.. All four GLM variants show similar CPUE trends. After a steady increase over the 1994-2006 period, the standardised CPUE indices show drops over the following two seasons, with an increase for the most recent 2009 season.
Description
Keywords
GLM-standardised
lobster CPUE

Reference:

Johnston, S. J., Brandão, A., & Butterworth, D. S. (2010). Variants of GLM-standardised lobster CPUE for Tristan da Cunha for the 1997-2009 period. MARAM/Tristan/2010/Sep/06

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