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Climate-related changes in the biomass and distribution of small pelagic fishes in the eastern Bering Sea during late summer, 2002–2018
Deep Sea Research Part II: Topical Studies in Oceanography ( IF 3 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.dsr2.2020.104907
Ellen M. Yasumiishi , Kristin Cieciel , Alex G. Andrews , Jim Murphy , John A. Dimond

Climate change is altering the distribution and biomass of marine species in Arctic and sub-Arctic waters. In this study, we investigate the influence of sea temperature on the annual distribution and biomass of pelagic fishes in the eastern Bering Sea during late summer, 2002–2018. The distribution (easting, northing, and area occupied) and biomass of capelin, Pacific herring, juvenile chum salmon, juvenile pink salmon, juvenile sockeye salmon, and age-0 walleye pollock collected by surface trawl were estimated using a standardized geostatistical delta-generalized linear mixed modeling approach. Species showed varied responses to warming on a temporal scale. Warming corresponded with more northerly distributions for capelin and juvenile sockeye salmon, a more westerly distribution of juvenile sockeye salmon, and range expansions for juvenile chum and sockeye salmon. Warming corresponded to a decrease in the annual biomass of capelin and an increase in the biomass of herring, age-0 pollock, and juvenile sockeye salmon. The spatio-temporal covariation in sea temperature and the distribution was nonlinear for juvenile pink salmon and age-0 pollock, positive for juvenile chum salmon and juvenile pink salmon, and negative for capelin indicating different responses of the distribution of pelagic fishes to warming in the eastern Bering Sea during late summer. In warmer areas, we found that the catch rates were higher for juvenile pink salmon, lower for capelin, and not significantly different for juvenile chum salmon, herring, age-0 pollock, and juvenile sockeye salmon. Juvenile sockeye salmon, a southerly distributed species in the survey area, appeared most responsive to warming. In this study, sockeye salmon and pollock are the most commercially important species while chum salmon are important for subsistence fishing. These temperature related changes during early life history stages for survival may have impacts on the numbers of these fishes recruiting to the fisheries.



中文翻译:

2002-2018年夏末东部白令海东部中上层鱼类的生物量和分布与气候有关的变化

气候变化正在改变北极和亚北极水域中海洋物种的分布和生物量。在这项研究中,我们调查了2002-2018年夏末海温对白令海东部浮游鱼类的年度分布和生物量的影响。使用标准的地统计学三角洲归纳法估算了由海面拖网收集的海毛鳞鱼,太平洋鲱鱼,少年密苏里鲑鱼,少年粉红鲑鱼,少年红鲑和0岁角膜鳕的分布(东,北和占地)和生物量线性混合建模方法。物种在时间尺度上表现出对变暖的不同反应。气候变暖对应于毛鳞鱼和少年红鲑的偏北分布,少年红鲑的西偏分布,并扩大了幼鲑和红鲑鱼的生产范围。变暖对应于毛鳞鱼年生物量的减少和鲱鱼,0岁狭鳕和少年鲑的生物量的增加。海水粉红鱼和零龄鳕的海水温度时空变化和分布是非线性的,幼鲑和鲑鱼为正,而毛鳞鱼为负,表明中上层鱼类的分布对变暖的响应不同。夏末东部白令海。在较热的地区,我们发现,幼年粉红鲑鱼的捕获率较高,毛鳞鱼较低,而幼鲑,鲱鱼,0岁小鳕和幼鲑则没有显着差异。红鲑鱼幼体,是调查区域中向南分布的物种,似乎对变暖反应最快。在这项研究中,红鲑鱼和狭鳕是商业上最重要的物种,而鲑鱼对于自给自足的捕鱼很重要。在生命的早期生存阶段,这些与温度相关的变化可能会影响这些向渔业招募的鱼类的数量。

更新日期:2020-12-17
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