首页> 中文期刊> 《极地研究》 >夏季北冰洋楚科奇海微微型、微型浮游植物和细菌的丰度分布特征及其与水团的关系

夏季北冰洋楚科奇海微微型、微型浮游植物和细菌的丰度分布特征及其与水团的关系

         

摘要

Based on the third Chinese Arctic Expedition cruise in the summer of 2008, the distribution patterns of pico-and nano-plankton and bacterial abundances were studied in the Chukchi Sea. Pico- and nano-phytoplankton abundances ranged from 0. 01×103 to 5. 51×103 cells·mL-1 and from 0.01×103 to 5. 51×103 cells·mL-1, respectively. The lowest numbers of bacteria in the entire water column were recorded at station R17 at 100 m depth (0. 21×106 cells·mL-1) , and the highest concentration was observed at station R09 at 10 m depth (9. 61×106 cells·mL-1). Our results demonstrate that melting sea ice affects the physical characteristics of the Chukchi Sea by reducing the salinity of the surface mixed layer which, in turn, results in greater hydrodynamic stability of the water column. These changes were accompanied by increasing bacterial concentrations. Pacific warm water brought high nutrient concentrations into the Chukchi Sea, which led to higher abundances of bacteria and nano-phytoplank-ton compared to other regions of the Arctic Ocean. However, the number of pico-phytoplankton in the Anadyr Water related well to chlorophyll a, and the number was greater than those in the other two water masses. The structure of pico- and nano-plankton communities, coupled with the water masses in the Chukchi Sea, can be considered indicators of the inflow of Pacific warm water into the Chukchi Sea.%利用2008年中国第三次北极科学考察的机会,分析夏季楚科奇海微微型、微型浮游植物和细菌丰度的分布特征,并探讨它们与楚科奇海水团之间的关系.结果表明:与北冰洋的其他海域相比,楚科奇海的微型浮游植物丰度相对较高(0.03-10.23×103 cells·mL-1),微微型浮游植物则大致相同(0.01-2.21×103 cells·mL-1),而浮游细菌丰度明显较高(0.21-9.61×106 cells·mL-1).白令海陆架水与海冰融化混合水和阿纳德尔水浮游植物群落结构不同,夏季随着太平洋水入流水对楚科奇海的日益影响,其水体本身的群落结构可能被外来群落替代.

著录项

  • 来源
    《极地研究》 |2012年第3期|238-246|共9页
  • 作者单位

    国家海洋局极地科学重点实验室,中国极地研究中心,上海200136;

    国家海洋局极地科学重点实验室,中国极地研究中心,上海200136;

    国家海洋局极地科学重点实验室,中国极地研究中心,上海200136;

    厦门大学海洋系,近海海洋环境科学国家重点实验室,福建厦门361005;

    国家海洋局极地科学重点实验室,中国极地研究中心,上海200136;

    华东师范大学生命学院,上海200062;

    国家海洋局极地科学重点实验室,中国极地研究中心,上海200136;

    同济大学环境科学与工程学院,上海200092;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类
  • 关键词

    北冰洋; 楚科奇海; 细菌; 微微型浮游植物; 微型浮游植物;

相似文献

  • 中文文献
  • 外文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号