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首页> 外文期刊>Oceanography >Fluxes, Fins, and Feathers Relationships Among the Bering, Chukchi, and Beaufort Seas in a Time of Climate Change
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Fluxes, Fins, and Feathers Relationships Among the Bering, Chukchi, and Beaufort Seas in a Time of Climate Change

机译：气候变化时期白令海，楚科奇海和波弗特海之间的通量，鳍和羽毛关系

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摘要

Ocean currents, water masses, and seasonal sea ice formation determine linkages among and barriers between the biotas of the Bering, Chukchi, and Beaufort Seas. The Bering Sea communicates with the Chukchi and Beaufort Seas via northward advection of water, nutrients, and plankton through Bering Strait. However, continuity of the ocean's physical properties is modulated by regional differences in heat, salt, and sea ice budgets, in particular, along the meridional gradient. Using summer density data from zooplankton, fish (bottom and surface trawl), and seabird surveys, we define three biogeographic provinces: the Eastern Bering Shelf Province (the eastern Bering Sea shelf south of Saint Lawrence Island), the Chirikov-Chukchi Province (the eastern Bering Sea shelf north of Saint Lawrence Island [Chirikov Basin] and Chukchi Sea), and the Beaufort Sea Province. Regional differences in summer distributions of biota largely reflect the underlying oceanography. Climate warming will reduce the duration and possibly the extent of seasonal ice cover in the Eastern Bering Shelf Province, but this warming may not lead to increased abundance of some subarctic species because seasonal ice cover and cold (< 2°C) bottom waters on the Bering shelf form a barrier to the northward migration of subarctic bottom fish species typical of the southeastern Bering Sea. While Arctic species that are dependent upon the summer extent of sea ice face an uncertain future, other Arctic species' resilience to a changing climate will be derived from waters that continue to freeze each winter.
机译：洋流，水团和季节性海冰形成决定了白令海，楚科奇海和波弗特海的生物群之间的联系和障碍。白令海通过水，养分和浮游生物通过白令海峡的北向平流与楚科奇海和波弗特海相通。但是，海洋物理特性的连续性受热量，盐和海冰预算的区域差异（尤其是沿子午梯度）的调节。利用浮游动物，鱼类（底拖网和地拖网）和海鸟调查的夏季密度数据，我们定义了三个生物地理省份：东白令陆架省（圣劳伦斯岛以南的白令海陆架），奇里科夫-楚科奇省（圣劳伦斯岛（奇里科夫盆地和楚科奇海）以北的白令海陆架，以及波弗特海省。夏季生物群分布的区域差异在很大程度上反映了潜在的海洋学。气候变暖将减少东部白令陆架省的持续时间，并可能减少季节性冰盖的程度，但这种变暖可能不会导致某些亚北极物种的丰度增加，因为季节性冰盖和冰冷（<2°C）的底水白令架对白令海东南部典型的北极亚底鱼类向北迁移形成了障碍。尽管依赖夏季海冰面积的北极物种面临不确定的未来，但其他北极物种对气候变化的适应力将来自于每个冬季持续冻结的水域。

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  • 来源
    《Oceanography》 |2011年第3期|p.250-265|共16页
  • 作者

    MICHAEL F. SIGLER; MARTIN RENNER; SETH L. DANIELSON; LISA B. EISNER; ROBERT R. LAUTH; KATHY J. KULETZ; ELIZABETH A. LOGERWELL; GEORGE L. HUNT JR;

  • 作者单位

    National Oceanic and Atmospheric Administration (NOAA), Juneau, AK, USA;

    School of Aquatic and Fishery Sciences, Seattle, WA, USA;

    School of Fisheries and Ocean Science, Fairbanks, AK, USA;

    Alaska Fisheries Science Center, NMFS, NOAA, juneau, AK, USA;

    Alaska Fisheries Science Center, NMFS, NOAA, Seattle, WA, USA;

    US Fish and Wildlife Service, Anchorage, AK, USA;

    Alaska Fisheries Science Center, NMFS, NOAA, Seattle, WA, USA;

    School of Aquatic and Fishery Sciences, Seattle, WA, USA;

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