Distribution and CPUE Trends in Pacific Salmon, Especially Sockeye Salmon in the Bering Sea and Adjacent Waters from 1972 to the mid 2000s

Distribution and CPUE Trends in Pacific Salmon, Especially Sockeye Salmon in the Bering Sea and Adjacent Waters from 1972 to the mid 2000s
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1972年至2000年代中期白令海及邻近海域太平洋鲑鱼,特别是红鲑鱼的分布和CPUE趋势

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发表时间:
2009
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通讯作者:
T. Azumaya
T. Azumaya
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作者:
T. Nagasawa;T. Azumaya

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我们提出的平均CPUE分布的五种太平洋鲑鱼在白令海和邻近的沃茨,根据日本的研究刺网作业,1972年至2002年的长期数据。许多种群的三个丰富的太平洋鲑鱼物种(粉红色,鲑鱼,红鲑),在白令海觅食迁移。白令海主要北太平洋鲑鱼CPUE的波动有两种不同的模式。粉红鲑鱼和奇努克鲑鱼的CPUE在1988年后增加,并保持在2005年的高位。红鲑和大麻哈鱼的CPUE在1977年之前很低,在1980年达到峰值,直到1989年才下降,然后再次上升,直到2005年。红鲑和鲑鱼的CPUE的趋势似乎与白令海海表面温度(SST)的波动相吻合,白令海的红鲑和鲑鱼在温暖时期的密度较高,在凉爽时期的密度较低,特别是红鲑。CPUE的这些增加和减少似乎与1977年和1989年的假设政权转移相吻合。我们还讨论了白令海海温的半年代际波动的影响,以及红鲑丰度的相关波动。
We present the mean CPUE distributions of five species of Pacific salmon in the Bering Sea and adjacent waters, based on long-term data from Japanese research-gillnet operations, 1972-2002. Many populations of three abundant Pacific salmon species (pink, chum, and sockeye salmon), have feeding migrations in the Bering Sea. There are two distinct patterns in the fluctuations in CPUE of major North Pacific salmon species in the Bering Sea. The CPUEs of pink and Chinook salmon increased after 1988 and remained high to 2005. The CPUEs of sockeye and chum salmon were low prior to 1977, peaked in 1980, declined until 1989, and then increased again until 2005. The trends in CPUE of sockeye and chum salmon seem to coincide with fluctuations in Bering Sea sea surface temperatures (SST) with higher densities of sockeye and chum salmon in the Bering Sea during warm periods and lower densities during cool periods, especially in sockeye. These increases and decreases in CPUE seem to coincide with the hypothesized regime shifts in 1977 and 1989. We also discuss the effects of the semi- decadal fluctuations in the Bering Sea SST, and related fluctuations in sockeye salmon abundance.
中川,H.,今林,H.,黑仓,H.和笠原,S.:亚洲渔业科学。
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