全球智库信息集成服务系统(G2TT): ICES SGFIAC Report 2007.

G2TT

来源类型	Other
	ICES SGFIAC Report 2007.
	Heino M; Johnston FD; Joergensen C; Matsumura S; Pardoe H; Raab K; Rijnsdorp AD; Silva A
发表日期	2007
出处	Report of the Study Group on Fisheries Induced Adaptive Change (SGFIAC), 26 February-2 March 2007, Lisbon, Portugal (2007)
出版年	2007
语种	英语
摘要	There is a growing body of scientific evidence indicating that fisheries can cause evolutionary responses over time periods as short as 1020 years, in particular in traits such as the onset of maturation. As these changes will most likely result in a reduction of the productivity of a fish stock, management objectives and (precautionary) reference points for sustainable exploitation need to be re-defined, and new objectives and reference points for managing fisheries-induced evolution need to be developed. Current knowledge allows for two generalisations. First, reducing harvest rates will almost always slow the rate and extent of fisheries-induced evolution in most life-history traits. Second, raising a stock's minimum size limit for exploitation well above the size range over which maturation occurs will slow down the rate of evolution in its maturation schedule. To go beyond these generic insights, 'Evolutionary Impact Assessments' (EvoIAs) are proposed to quantify the effects of management measures, through the evolutionary response of specific stocks, on the utility functions defined by managers. The Study Group on Fisheries Induced Adaptive Change [SGFIAC] proposes to further develop this framework in dialogue with fisheries scientists and managers, with the aim of integrating the effects of fisheries-induced evolution into fisheries management advice. Developing EvoIAs in the context of suitable case studies is considered to be the most efficient way for making progress.
主题	Evolution and Ecology (EEP)
URL	http://pure.iiasa.ac.at/id/eprint/8268/
来源智库	International Institute for Applied Systems Analysis (Austria)
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/135125
推荐引用方式 GB/T 7714	Heino M,Johnston FD,Joergensen C,et al. ICES SGFIAC Report 2007.. 2007.