Recent advances in mapping of deeper marine environments using high resolution hydroacoustic surveying and detailed predictive marine habitat mapping has facilitated more targeted marine management and research. In 2005, a joint venture between Parks Victoria and the Coastal CRC resulted in detailed habitat maps of five of Victoria’s Marine National Parks. At Cape Howe Marine National Park we used one of the resultant habitat maps to plan and conduct a survey of demersal fish using Baited Remote Underwater Stereo-Video Systems (Stereo BRUVS). We chose to use stereo BRUVS as a sampling tool because they are non-destructive and are able to collect comparable data on the diversity, relative abundance and length of demersal fishes from shallow (~ 10m) and deep (~100m) benthic habitats. In addition, the technique provides accurate and precise measures of sample boundaries imperative for spatial analyses.

The aim of this research is to identify key biotic and abiotic processes influencing the spatial distribution of demersal fish species. Outcomes of the project will include a greater understanding of demersal fish distributions, assemblage structure and landscape linkages, and will assist with more targeted fisheries management and marine protected area planning and development.