The University of Western Australia
The use of stereo-video for collecting data on the length and abundance of fish
Wednesday — October 27, 2010
Pacific Forum — 3:00 p.m.
Measuring the abundance and size of fish in the sea is problematic, yet this basic information is fundamental to the sustainable management of fish stocks.
Greater emphasis on Ecosystems Based Fishery Management makes these challenges more complex, as data are required on the abundances and lengths of multiple species. Similarly, with management shifting towards a finer scale it is important to understand links between fish and the habitats. This requires techniques capable of sampling at a fine scale.
There is an increasing need for fishery independent sampling to supplement conventional catch based data, and replace it in some areas where destructive sampling is not compatible with management plans. In this presentation I discuss the use of stereo-video for sampling fish.
I present 2 case studies from Western Australia where we have used these approaches to address ecological questions involving effects of marine conservation and fisheries and the effect of depth on the distribution of fishes.
Next: December 1 - Chris Lowe