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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 Ⅰ: zooplankton
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Seasonal, interannual, and spatial patterns of community composition over the eastern Bering Sea shelf in cold years. Part Ⅰ: zooplankton

机译：寒冷年份白令海东部陆架上社区组成的季节性，年际和空间格局。第一部分：浮游动物

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摘要

Ecosystem structure and function in the eastern Bering Sea are impacted by seasonal, interannual, and spatial variation of the zooplankton community. Zooplankton abundance, community composition and individual responses of key taxa, in spring, summer, and fall were evaluated across ecoregions during three years with high sea-ice, 2008-2010 (cold years). Interannual variations were greatest in spring, but less pronounced compared with intra-annual variations. Intra-annual variations were greatest in the south middle domain in spring and the north middle domain in all seasons. Models using environmental variables were able to explain 69-77% of zooplankton community variation within each season. Among individual taxa, Calanus marshallae/glacialis had delayed stage progression in spring 2009 compared with 2008 and 2010 on the south middle shelf, likely due to late ice retreat and cold temperatures that increased development times. In contrast, stage progression was fastest in summer 2008 likely due to warmer temperatures. Our findings indicate that intra-annual variation of zooplankton community composition, life history stage, and abundance within a cold period may affect the amount of high-lipid zooplankton prey (e.g. Neocalanus and Calanus spp. copepods and euphausiids) available seasonally for forage fish (e.g. age-0 walleye pollock) to grow to a sufficient size (to avoid size-dependent predation) and have sufficient lipid stores (to avoid starvation) to survive the first winter at sea.
机译：白令海东部的生态系统结构和功能受到浮游动物群落的季节，年际和空间变化的影响。在2008-2010年（高寒年）的三年中，在高海冰的整个生态区域中评估了春季，夏季和秋季浮游动物的丰度，群落组成和主要分类单元的个体反应。春季的年际变化最大，但与年内变化相比不那么明显。在春季中南部地区和所有季节中北部中部地区年内变化最大。使用环境变量的模型能够解释每个季节内浮游动物群落的69-77％。在单个类群中，与南部中陆架的2008年和2010年相比，马齿alan /冰川在2009年春季延迟了阶段进展，这可能是由于晚退冰和寒冷的气温增加了开发时间。相反，由于温度升高，2008年夏季阶段进展最快。我们的发现表明，寒冷季节内浮游动物群落组成，生活史阶段和丰度的年内变化可能会影响季节性食用草鱼的高脂浮游动物猎物（例如，新cal蒲和Calanus spe。copepods和euphausiids）的数量（例如0岁的角膜白斑鳕鱼）生长到足够大的尺寸（避免大小依赖的捕食），并具有足够的脂质储存（避免饥饿），以度过海上的第一个冬天。

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  • 来源
    《ICES Journal of Marine Science》 |2018年第1期|72-86|共15页
  • 作者

    Eisner Lisa B.; Pinchuk Alexei I.; Kimmel David G.; Mier Kathryn L.; Harpold Colleen E.; Siddon Elizabeth C.;

  • 作者单位

    NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr, 7600 Sand Point Way NE, Seattle, WA 98115 USA;

    Univ Alaska, Fisheries Div, Coll Fisheries & Ocean Sci, 17101 Pt Lena Loop Rd, Juneau, AK 99801 USA;

    NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr, 7600 Sand Point Way NE, Seattle, WA 98115 USA;

    NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr, 7600 Sand Point Way NE, Seattle, WA 98115 USA;

    NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr, 7600 Sand Point Way NE, Seattle, WA 98115 USA;

    NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr, 17109 Pt Lena Loop Rd, Juneau, AK 99801 USA;

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  • 正文语种 eng
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  • 关键词

    Calanus; community; eastern Bering Sea structure; temporal shifts; zooplankton;

    机译：卡兰努斯;社区;白令海东部结构;时间推移;浮游生物;

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