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Advances in Chinese Arctic and subarctic research in marine biology and ecology with emphasis on the Pacific Arctic sector

机译:中国北极和亚北极海洋生物学和生态学研究的进展,重点是太平洋北极地区

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摘要

The Arctic is one of the most sensitive regions that respond through feedback to global climate changes. Climatic, hydrological and ecological changes in the Arctic are clear evidence of global warming. In 2012 and 2014, the 5th and 6th Chinese National Arctic Research Expeditions undertook studies in the Bering Sea, the Arctic Ocean (including the Chukchi Sea), and the Norwegian Sea. These studies provided us with a better understanding of the marine biology and ecology in the Arctic and subarctic regions, particularly in the Pacific Arctic sector. Rapid changes observed in the Arctic environment include the shrinking of cold-water masses in the Bering Sea in the summer, and elevated water temperatures promoting phytoplankton blooms, leading to an increase in phytoplankton transferred to higher trophic levels. As a result, the transfer efficiency of organic matter toward the bottom weakened, leading to a reduction in benthic biomass. This is consistent with expectations that the overall carbon and energy flux will ultimately switch from the dominant mode of sea ice–algae–benthos to one of phytoplankton–zooplankton. Influenced by Pacific water inflow, fluvial runoff and melting sea ice, the Chukchi Sea exhibited different responses to various environmental changes. Interactions between water masses led to other interannual ecological shifts. With the increase in sea ice melt and sunlight in the central region of the Arctic Ocean, the relative abundance of heterotrophic bacteria is expected to increase, and play a vital role in the Arctic microbial loop.
机译:北极是最敏感的地区之一,可通过对全球气候变化的反馈做出反应。北极的气候,水文和生态变化是全球变暖的明显证据。在2012年和2014年,第五届和第六届中国国家北极研究考察队在白令海,北冰洋(包括楚科奇海)和挪威海进行了研究。这些研究使我们对北极和北极地区,特别是太平洋北极地区的海洋生物学和生态学有了更好的了解。在北极环境中观察到的快速变化包括夏天白令海的冷水团减少,以及升高的水温促进浮游植物开花,从而导致浮游植物增加,从而转移到更高的营养水平。结果,有机物向底部的转移效率减弱,导致底栖生物量减少。这与预期的总碳和能量通量最终将从海冰-藻类-底栖生物的主导模式转换为浮游植物-浮游生物之一的预期相一致。受太平洋水流入,河流径流和海冰融化的影响,楚科奇海对各种环境变化表现出不同的反应。水团之间的相互作用导致其他年际生态变化。随着北冰洋中部地区海冰融化和日光的增加,预计异养细菌的相对丰度将增加,并在北极微生物环中起至关重要的作用。

著录项

  • 来源
    《极地科学进展(英文版)》 |2017年第2期|111-119|共9页
  • 作者单位

    Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;

    Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;

    Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;

    Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;

    Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;

    Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;

    Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;

    Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;

    Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;

    SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China;

  • 收录信息 中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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