Abstract In the southeastern Bering Sea, years with above-average sea ice extent have been associated with elevated abundances of large lipid-rich copepods in both net tows and age-0 walleye pollock (Gaduschalcogrammus) diets, followed by high overwinter pollock survival and stronger recruitment into the fishery three years later. In this study, we directly compare large copepod abundances of taxa important in age-0 pollock diets (Calanus glacialis/marshallae, Metridia pacifica and Neocalanus spp.) to age-3 pollock abundance from stock assessments for year classes 2002–2015 (excluding 2013). Copepod samples from bongo nets were collected on fishery oceanography surveys in late summer during warm (low ice) and cold (high ice) climate stanzas. In addition to mean estimates of large copepods among stations (sample-based), we implemented a spatial delta-generalized linear mixed model using the Vector Autoregressive Spatio-Temporal (VAST) package to account for variations in survey coverage among years. Positive significant linear relationships were found for both of these estimates of large copepods during the age-0 year and the abundance of these pollock at age-3. Correlations were stronger using VAST model-based indices compared with sample-based indices (R2 = 0.74 versus 0.43, respectively, all copepod taxa combined). A significant relationship was also observed between the bottom cold pool (

中文翻译：

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大型桡足类作为白令海东南部大眼鳕补充的主要指标：基于样本的时空模型 (VAST) 结果

摘要 在白令海东南部，海冰面积高于平均水平的年份与净拖尾和 0 龄大眼鳕 (Gaduschalcogrammus) 饮食中大型富含脂质的桡足类丰度升高有关，其次是较高的越冬狭鳕存活率和更强的三年后招募进入渔业。在这项研究中，我们从 2002-2015 年（不包括 2013 年）的种群评估中直接比较了 0 岁狭鳕饮食中重要的桡足类群的大量丰度（Calanus glacialis/marshallae、Metridia pacifica 和 Neocalanus spp.） ）。来自邦戈网的桡足类样本是在夏末温暖（低冰）和寒冷（高冰）气候节期间通过渔业海洋学调查收集的。除了站点间大型桡足类的平均估计值（基于样本），我们使用矢量自回归时空 (VAST) 包实现了空间增量广义线性混合模型，以解释不同年份调查覆盖范围的变化。对于 0 岁时大型桡足类的这些估计值和 3 岁时这些狭鳕的丰度，都发现了正显着的线性关系。与基于样本的指数相比，使用基于 VAST 模型的指数的相关性更强（R2 分别为 0.74 和 0.43，所有桡足类分类群的总和）。在底部冷池（对于 0 岁时大型桡足类的这些估计值和 3 岁时这些狭鳕的丰度，都发现了正显着的线性关系。与基于样本的指数相比，使用基于 VAST 模型的指数的相关性更强（R2 分别为 0.74 和 0.43，所有桡足类分类群的总和）。在底部冷池（对于 0 岁时大型桡足类的这些估计值和 3 岁时这些狭鳕的丰度，都发现了正显着的线性关系。与基于样本的指数相比，使用基于 VAST 模型的指数的相关性更强（R2 分别为 0.74 和 0.43，所有桡足类分类群加起来）。在底部冷池（