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首页> 外文期刊>ICES Journal of Marine Science >Seasonal interannual, and spatial patterns of community composition over the eastern Bering Sea shelf in cold years. Part II: ichthyoplankton and juvenile fish
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Seasonal interannual, and spatial patterns of community composition over the eastern Bering Sea shelf in cold years. Part II: ichthyoplankton and juvenile fish

机译：寒冷年份白令海东部陆架社区的季节性年际和空间格局。第二部分：浮游鱼类和幼鱼

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摘要

Climate-mediated oceanographic changes have led to protracted periods of above-or below-average water temperatures over the eastern Bering Sea shelf since the early 2000s. Ecosystem components, from phytoplankton to marine birds, have shown dichotomous responses to these temperature stanzas. Understanding within-stanza responses is fundamental to modelling efforts that project ecosystem responses under future climate scenarios. This study describes fish communities associated with Walleye Pollock during the age-0 period and also examines within-stanza homogeneity of assemblages. Spatial patterns of assemblage structure are compared with pre-defined ecoregions and environmental indices are assessed to determine potential mechanisms that delineate species assemblages. Walleye Pollock, rockfishes, Sand Lance, and Northern Rock Sole contributed to spring assemblages in every year. Assemblages were delineated by across-shelf gradients in 2008 and 2010 while 2009 assemblages showed less spatial structure. In summer, the diversity of fish assemblages increased across years but early-stage juvenile Walleye Pollock represented a small portion of the total abundance in 2009. Environmental gradients were related to fish assemblages, but patterns were along-shelf in 2008 and across-shelf in 2010. In fall, late-stage juvenile Walleye Pollock dominated the catch in 2008, but did not typify any assemblage in 2009. Overall, patterns of assemblage structure were not consistent with pre-defined ecoregions. Assemblage structure in 2009 was unique and indicates that within-stanza variability may complicate modelling projections based on ecosystem-level responses to climate changes.
机译：自2000年代初以来，气候介导的海洋学变化导致白令海东部陆架长期处于高于或低于平均水温的时期。从浮游植物到海洋鸟类的生态系统组件已显示出对这些温度节的二分响应。了解节内响应对于建模预测未来气候情景下生态系统响应的工作至关重要。这项研究描述了0岁年龄段与Walleye Pollock相关的鱼类群落，还研究了组合的节内同质性。将集合结构的空间模式与预定的生态区进行比较，并评估环境指数，以确定描绘物种集合的潜在机制。每年，角膜白斑狼，岩鱼，沙刺鱼和北部岩底都为春季的聚集做出了贡献。组合物在2008年和2010年用跨架梯度来描绘，而2009年的组合物显示的空间结构较少。夏季，鱼群的多样性随着年份的增长而增加，但早期幼体角膜白斑Pol鱼在2009年占总丰度的一小部分。环境梯度与鱼群有关，但格局在2008年沿用，而在2008年跨架。 2010年。秋天，晚年幼稚的沃利耶·波洛克（Walleye Pollock）在2008年主导了该捕捞量，但在2009年没有进行任何分类。总体而言，分类结构的模式与预定的生态区不一致。 2009年的集合结构是独特的，表明节内变化可能会使基于生态系统对气候变化的响应的建模预测复杂化。

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  • 来源
    《ICES Journal of Marine Science》 |2018年第1期|87-101|共15页
  • 作者

    Siddon Elizabeth C.; Duffy-Anderson Janet T.; Mier Kathryn L.; Busby Morgan S.; Eisner Lisa B.;

  • 作者单位

    NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr, Ted Stevens Marine Res Inst,Ecosyst Monitoring &, 17109 Pt Lena Loop Rd, Juneau, AK 99801 USA;

    NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr,Fisheries Oceanog Coordi, Resource Assessment & Conservat Engn Div, 7600 Sand Point Way NE, Seattle, WA 98115 USA;

    NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr,Fisheries Oceanog Coordi, Resource Assessment & Conservat Engn Div, 7600 Sand Point Way NE, Seattle, WA 98115 USA;

    NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr,Fisheries Oceanog Coordi, Resource Assessment & Conservat Engn Div, 7600 Sand Point Way NE, Seattle, WA 98115 USA;

    NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr, Ted Stevens Marine Res Inst,Ecosyst Monitoring &, 17109 Pt Lena Loop Rd, Juneau, AK 99801 USA;

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  • 关键词

    community structure; eastern Bering Sea; ichthyoplankton; spatiotemporal shifts; Walleye Pollock (Gadus chalcogrammus);

    机译：群落结构;白令海东部;浮游鱼类;时空变化;角膜白lock（Gadus chalcogrammus）;

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