Investigating spatio-temporal change in spawning activity by Atlantic mackerel between 1977 and 1998 using generalized additive models
Investigating spatio-temporal change in spawning activity by Atlantic mackerel between 1977 and 1998 using generalized additive models
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DOI：
10.1006/jmsc.2002.1207
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发表时间：
2002-08-01
影响因子：
3.3
通讯作者：
Reid, DG
中科院分区：
文献类型：
--
作者：
Beare, DJ;Reid, DG
对沿着欧洲西部大陆架大西洋鲭鱼产卵活动的长期、季节和空间格局进行了调查。第一阶段鸡蛋密度从所有八个可用的国际，三年一次的调查（1977年，1980年，1983年，1986年，1989年，1992年，1995年和1998年）进行了建模使用广义添加剂模型。数据显示，产卵活动的季节和空间格局每年都有变化。年总产蛋量在1989年达到峰值，1983年和1998年达到最低值。对这些趋势的进一步研究（1977-1998年）表明，产卵活动的强度已转移地点，南部下降，北部上升。第一阶段的鸡蛋密度和海面温度之间没有直接的联系，虽然沿沿着货架边缘的温度上升率是密切相关的鲭鱼全年总产卵量。(C)2002年国际海洋考察理事会。由爱思唯尔科技有限公司出版。保留所有权利。
Long-term, seasonal and spatial patterns in spawning activity of Atlantic mackerel (Scomber scombrus) along the continental shelf west of Europe were investigated. Stage I egg densities from all eight available international, triennial surveys (1977, 1980, 1983, 1986, 1989, 1992, 1995 and 1998) were modelled using generalized additive models. The data showed that seasonal and spatial patterns of spawning activity varied inter-annually. Total annual egg production peaked in 1989 with minima in 1983 and 1998. Further examination of these trends (1977-1998) showed that the intensity of spawning activity has shifted location, declining in the south and rising in the north. There was no direct link between stage I egg densities and sea surface temperature, although the rate of temperature increase along the shelf edge was strongly related to the total annual egg production by the mackerel. (C) 2002 International Council for the Exploration of the Sea. Published by Elsevier Science Ltd. All rights reserved.