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首页> 外文期刊>ICES Journal of Marine Science >Regional differences in climate factors controlling chum and pink salmon abundance
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Regional differences in climate factors controlling chum and pink salmon abundance

机译：控制Chum和粉红鲑鱼丰度的气候因素的区域差异

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摘要

Chum and pink salmon abundances vary on a decadal time-scale. We examined the relationship between large-scale climate indices (CIs), regional climate factors (RFs), and rates of change in regional catches (RCs) of chum and pink salmon in five regions of the North Pacific. Correlation coefficients of RCs with RFs were larger than those of RCs with CIs, although the correlation coefficient of particular variables varied among regions. Climate affected salmon stocks as indicated by significant relationships with various terrestrial and ocean climate factors on a regional scale. These results suggest that no single CI or RF controls salmon abundance in all regions; however, global climate changes could affect regional climate directly and regional salmon abundance indirectly. A warming trend in the North Pacific might affect the long-term change in salmon abundance. The mechanisms controlling regional salmon abundance must be understood better to forecast successfully future conditions for Pacific salmon stocks, because the response of salmon stocks to global climate change varies among regions.
机译：十进制和粉红色鲑鱼的丰度在十年时间尺度上变化。我们研究了北太平洋五个地区的大型气候指数（CIs），区域气候因子（RFs）和密友和粉红鲑鱼区域捕获量（RCs）的变化率之间的关系。尽管区域间特定变量的相关系数有所不同，但具有RF的RC的相关系数要大于具有CI的RC的相关系数。气候变化影响了鲑鱼种群，与区域范围内各种陆地和海洋气候因素之间的显着关系表明。这些结果表明，没有一个CI或RF能控制所有地区的鲑鱼丰度。然而，全球气候变化可能直接影响区域气候，并间接影响区域鲑鱼丰度。北太平洋的变暖趋势可能会影响鲑鱼丰度的长期变化。必须更好地理解控制区域鲑鱼丰度的机制，才能成功预测太平洋鲑鱼种群的未来状况，因为鲑鱼种群对全球气候变化的反应在不同地区之间有所不同。

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