BIOL10001 Lecture Notes - Lecture 30: Great Australian Bight, Leeuwin Current, Sustainable Fishery
18 Oct 2018
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Document Summary
Increase in world catch driven by industrialization of sheries and increased population. Continuous shift to new species and new areas to maintain catch levels. All oceans now shed few unutilized resources remain. About 75% important commercial species fully or over-exploited. Australian fishing zone is the 3rd largest in the world. Survey showed that only 30% of the public believe our wild sheries are sustainable. Ranks 60th in world in commercial catch no major upwelling zones. High diversity (many di erent species) and high value. Fisheries are 5th most valuable food industry in australia. 94 stocks (unit of management) assessed in 2016. Major sheries: prawn, rock lobster, tuna, salmon, abalone. Top ve by production value: salmonids, tuna, pearl oysters, edible oysters, prawns. Over shing: stock that is experiencing too much shing, removal rate is unsustainable. Ways our sheries are managed: e ort controls (gear type restrictions, seasonal closures) Habitat protection zones (marine parks, nursery grounds, vulnerable populations)
