沉积物再悬浮对食浮游动物鱼类捕食浮游动物的影响
CSTR:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金项目(41271523)和江苏省科技支撑项目(BE2011820)联合资助.


Effect of sediment resuspension on predation of planktivorous fish on zooplankton
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 附件
  • |
  • 文章评论
    摘要:

    在亚热带浅水湖泊中,由风浪引起沉积物再悬浮是其重要特征之一.沉积物再悬浮一方面直接影响浮游动物群落结构,另一方面通过影响食浮游动物鱼类对浮游动物的捕食而产生间接影响.以食浮游动物鱼类——餐条(Hemiculter leucisculus)为实验对象,通过模拟实验,比较不同再悬浮条件下餐条对浮游动物群落结构的影响.结果显示,在有餐条的处理组中,大型枝角类短钝溞(Daphnia obtusa)只在弱再悬浮条件下出现,并成为枝角类群落的优势种;在无餐条的处理组中,短钝溞生物量随再悬浮强度减弱而增加.强再悬浮(无餐条)和无再悬浮(有餐条)条件下,小型枝角类角突网纹溞(Ceriodaphnia cornuta)和盘肠溞(Chydorus sp.)为优势种.无论有、无餐条条件下,桡足类优势种均为中剑水蚤(Mesocyclops sp.),其生物量随再悬浮强度减弱而增加.所有处理组中,轮虫丰度均低于枝角类和桡足类丰度.研究表明,在亚热带浅水湖泊中,适当的悬浮质浓度既能干扰食浮游动物鱼类对大型浮游动物的捕食,又不影响大型浮游动物的生存,使得它们保持一定的丰度,通过对浮游植物的摄食,降低叶绿素a浓度.

    Abstract:

    Sediment resuspension resulted from wave actions is one of the major characters of subtropical shallow lakes. Resuspension can directly alter the zooplankton community structures, and indirectly influence the predation of planktivorous fishes. Our study aimed to reveal how planktivorous fish Hemiculter leucisculus affected the zooplankton community structures in different levels of sediment resuspension. The results showed that in the condition of H. leucisculus, large-sized cladoceran Daphnia obtusa was only found and became dominant in the treatment of weak resuspension. Biomass of D. obtusa decreased with the increase of resuspension intensity in treatments without H. leucisculus and Chydorus sp.. The Ceriodaphnia cornuta dominated the cladoceran communities in the treatments of strong resuspension without H. leucisculus or no resuspension with H. leucisculus. Regardless of fish and resuspension intensity, Mesocyclops sp. was dominant copepod and its biomass increased with the decrease of the resupension intensity. Rotifer abundances were lower than cladoceran and copepod in all treatments. This study indicates that in subtropical shallow lakes, a certain level of sediment resuspension can weaken both the predation of planktivorous fishes and resuspension effect on large-sized cladoceran, which can decrease the chlorophyll-a concentration through increasing the feeding of large-sized cladoceran on algae.

    参考文献
    相似文献
    引证文献
引用本文

周礼斌,陈非洲.沉积物再悬浮对食浮游动物鱼类捕食浮游动物的影响.湖泊科学,2015,27(5):911-916. ZHOU Libin, CHEN Feizhou. Effect of sediment resuspension on predation of planktivorous fish on zooplankton. Journal of Lake Sciences,2015,27(5):911-916. DOI:10.18307/2015.0518

复制
相关视频

分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2014-10-25
  • 最后修改日期:2015-02-25
  • 录用日期:
  • 在线发布日期: 2015-08-21
  • 出版日期:
文章二维码
您是第    位访问者
地址:南京市江宁区麒麟街道创展路299号    邮政编码:211135
电话:025-86882041;86882040     传真:025-57714759     Email:jlakes@niglas.ac.cn
Copyright:中国科学院南京地理与湖泊研究所《湖泊科学》 版权所有:All Rights Reserved
技术支持:北京勤云科技发展有限公司

苏公网安备 32010202010073号

     苏ICP备09024011号-2