BIOL 316 Lecture Notes - Lecture 36: Sustainable Yield, Bycatch, Habitat Destruction
16 Apr 2017
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Document Summary
Like commercial fisheries: want to establish a sustainable harvest. Changes in habitat, remote location, gears, human activity (anglers: stocking of fish exists. Used to enhance population and introduce new species. 1900"s, heavy angler population drove an overall decline in fish populations: 1980"s, catch and release practice became popular. Trawly net: net comes up and are counted, catch would include fish that we did not want. Decreases survivability of juveniles and adult fish caught. Foundation of sustainability -> catch and release and selective harvest: currently, focus on sustainable resource. Many recreational fisheries is sustainable: unsustainable = not directly linked to recreational fisheries. Angler effect conservation and ecosystem: influence many aspects of fisheries industry. Cycle of money goes in to help fisheries: class program for fisheries. Promote fisheries knowledge and early exposure to field. Regulation on number of harvest per season. Aquaculture should be built away from wild population: helps prevent hybridization of poor fitness fish.
