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来源类型	Article
规范类型	其他
DOI	10.1111/j.1365-2419.2008.00472.x
	Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea.
	Heino M; Engelhard GH; Godoe OR
发表日期	2008
出处	Fisheries Oceanography 17 (2): 153-163
出版年	2008
语种	英语
摘要	The Barents Sea is the north-eastern fringe of the distribution of blue whiting (Micromesistius poutassou). Fluctuations in distribution and abundance of blue whiting in the area have been marked. Two hypotheses are put forward to explain these fluctuations. First, rich year classes in the main Atlantic stock of blue whiting may contribute to increased abundance in the Barents Sea. Second, variations in hydrography, such as influx of warm Atlantic water, may be particularly important in this fringe area. We investigated these hypotheses using data from bottom trawl surveys conducted during the period 1981-2006. Variations in abundance (measured either as incidence or density) and distribution were correlated with recruitment in the Atlantic stock of blue whiting as well as hydrographic conditions. Regression analyses indicated that the abundance fluctuations are primarily determined by variations in recruitment of Atlantic blue whiting, a strong year class leading to high abundance in the Barents Sea the year after spawning. However, salinity anomaly in the Fugloya-Bear Island transect during the previous year, an indicator of high inflow of Atlantic water, had also a significant, positive effect. Thus, the data suggested a climatic modulation of dynamics that were primarily determined by recruitment of blue whiting in the main Atlantic stock. Analyses of size structure as well as earlier studies on population genetics supported this conclusion.
主题	Evolution and Ecology (EEP)
URL	http://pure.iiasa.ac.at/id/eprint/8539/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/128818
推荐引用方式 GB/T 7714	Heino M,Engelhard GH,Godoe OR. Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea.. 2008.