Summary of penguin-pelagic fish interaction modelling during 2008
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2010
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University of Cape Town
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Abstract
This document consolidates a series of papers developed during 2008 to inform the
MCM Pelagic Working Group on the possible implications for future trends in
penguin numbers at the Robben and Dassen Island colonies of reducing future TAC
for sardine and anchovy. It details the penguin population model used and how this
was fitted to available data on penguin abundance, as well as the inclusion of terms
describing the effects of changing sardine and anchovy abundance on penguin
reproduction and survival rates. This penguin model is projected forward under the
scenarios for future sardine and anchovy abundance trajectories that were used in
developing the current sardine-anchovy OMP, and variants of that OMP which
involve further reductions in TACs at low sardine and anchovy abundance levels. An
appendix lists all the data taken into account in these analyses.
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Reference:
Robinson, W., Plaganyi, E.E., Butteworth, D.S., & de Moor, C. (2010). Summary of penguin-pelagic fish interaction modelling during 2008.