...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Recent eutrophication and human disturbance in Daya Bay, the South China Sea: Dinoflagellate cyst and geochemical evidence
【24h】

Recent eutrophication and human disturbance in Daya Bay, the South China Sea: Dinoflagellate cyst and geochemical evidence

机译：南海大亚湾最近的富营养化和人为干扰：鞭毛藻囊肿和地球化学证据

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Recent trends in eutrophication and human disturbance were evaluated using dinoflagellate resting cysts and geochemical parameters. Analyses were performed on three sediment cores from Daya Bay, South China Sea covering the past hundred years. Changes in cyst assemblages as well as geochemical parameters including biogenic silica (BSi), organic carbon (OC) and total nitrogen (TN) reflected environmental change in the area. The clear increase in overall cyst concentration and the prominence of Scrippsiella cysts suggested an increase in cultural eutrophication which began in the 1970s and become evident since 1985. Large fluctuation in cyst assemblages and BSi in the upper 22 cm signaled the influence of construction and operation of nuclear power stations on phytoplankton community and environments, with an increase in the early stage of construction, a rapid decline in the late stage of construction and early operation, and then a sharp increase thereafter. High Alexandrium cyst abundance in shallowest sediments was consistent with high PSP levels and PSP events in the area, and the persistent toxicity suggests recurrent seeding from the rich cyst bed in these surface sediments.
机译：富营养化和人为干扰的最新趋势已使用藻鞭毛安息囊和地球化学参数进行了评估。对过去一百年来来自南海大亚湾的三个沉积岩心进行了分析。囊肿组合以及地球化学参数（包括生物硅（BSi），有机碳（OC）和总氮（TN））的变化反映了该地区的环境变化。囊肿总浓度的明显增加和镰孢杆菌囊肿的突出表明，文化富营养化的增加始于1970年代，并从1985年开始变得明显。在上部22 cm的囊肿组合和BSi的大波动预示着细菌的建造和操作的影响。浮游植物群落和环境中的核电站，在建设初期阶段增加，在建设后期阶段和早期运行阶段迅速下降，此后急剧增加。最浅层沉积物中亚历山大藻囊肿的高丰度与该地区的高PSP水平和PSP事件一致，持久的毒性表明这些表层沉积物中丰富的囊肿床经常播种。

著录项

  • 来源
    《Estuarine Coastal and Shelf Science》 |2011年第3期|p.403-414|共12页
  • 作者

    Zhao-Hui Wang; De-Hai Mu; You-fu Li; Yu Cao; Yu-Juan Zhang;

  • 作者单位

    Institute of Hydrobiology, College of Life Science and Technology, finan University, Guangzhou 510632, China,Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou 510632, China;

    Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangzhou 510070, China;

    Institute of Hydrobiology, College of Life Science and Technology, finan University, Guangzhou 510632, China;

    Institute of Hydrobiology, College of Life Science and Technology, finan University, Guangzhou 510632, China;

    Institute of Hydrobiology, College of Life Science and Technology, finan University, Guangzhou 510632, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cyst; biogenic silica; organic carbon; total nitrogen; eutrophication; nuclear power station;

    机译：囊肿生物硅有机碳;总氮;富营养化核电站;

相似文献

  • 外文文献
  • 中文文献
  • 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