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引用本文:蒋伟伟,刘正文,郭亮,陈非洲,宋晓兰.沉积物再悬浮对浮游动物群落结构影响的模拟实验.湖泊科学,2010,22(4):557-562. DOI:10.18307/2010.0412
JIANG Weiwei,LIU Zhengwen,GUO Liang,CHEN Feizhou,SONG Xiaolan.Experimental study on the effect of sediment resuspension on zooplankton community. J. Lake Sci.2010,22(4):557-562. DOI:10.18307/2010.0412
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沉积物再悬浮对浮游动物群落结构影响的模拟实验
蒋伟伟1, 刘正文2, 郭亮1, 陈非洲2, 宋晓兰2
1.华中农业大学水产学院 武汉 430070;2.中国科学院南京地理与湖泊研究所 南京 210008
摘要:
沉积物再悬浮是浅水湖泊的重要特征之一.通过模拟实验,比较不同再悬浮程度下浮游动物群落结构的变化,以探讨沉积物再悬浮对浮游动物的影响.结果显示,不同处理下总悬浮物与叶绿素a浓度差异显著.再悬浮组中枝角类简弧象鼻溞(Bosmina coregoni)、角突网纹溞(Ceriodaphnia cornuta)和轮虫占优势,而对照组中大型枝角类溞属(Daphniasp.)占优势,再悬浮使浮游动物群落组成趋于小型化.不同再悬浮条件下隆线溞(Daphnia carinata)、简弧象鼻溞(Bosmina coregoni)和轮虫的丰度差异显著,角突网纹溞(Ceriodaphnia cornuta)和桡足类丰度差异不显著.总悬浮物浓度与轮虫和简弧象鼻溞丰度显著正相关,与隆线溞丰度显著负相关,与其它浮游动物种群丰度无显著相关性.本研究显示,沉积物再悬浮是决定浮游动物群落结构变化的重要过程之一.
关键词:  沉积物再悬浮  浮游动物  群落结构  浅水湖泊
DOI:10.18307/2010.0412
分类号:
基金项目:国家科技部支撑计划“应对太湖蓝藻水华的饮用水质保障应急技术研究与示范”项目资助
Experimental study on the effect of sediment resuspension on zooplankton community
JIANG Weiwei1, LIU Zhengwen2, GUO Liang1, CHEN Feizhou2, SONG Xiaolan2
1.College of Fisheries, Huazhong Agricultural University, Wuhan 430070, P. R. China;2.Nanjing Institute of Geography and Limnology, Chinese Academy of Science, Nanjing 210008, P. R. China
Abstract:
Sediment re-suspension is one of the important characteristics of hydrodynamic processes in shallow lakes. This experimental study was compared with the changes of zooplankton community in different levels of the re-suspension to investigate the effect of sediment re-suspension on zooplankton. The result shows significantly difference when using different treatments of concentrations of TSS and Chl. a. The cladoceran Bosmina coregona, Ceriodaphnia cornuaa and Rotifere.dominant in re-suspended groups, but Daphnia sp. is dominant in no re-suspended group. Re-suspension produced an effect of deducing size of the composition of zooplankton communities. The abundances of Daphnia carinaza, Bosmina coregoni and Rotifers are significant different in different re-suspended levels,but Ceriodaphnia wrnuta and Cabmoidas show no significant different. The concentration of TSS is significant positive correlation with abundances of Rotifers and Bosmina coregoni, but significant and negative correlation with Daphnia sp. abundance,while there is correlation with other populations. The research shows that the sediment re-suspension is one of the important processes determining zooplankton community structure.
Key words:  Sediment resuspension  zooplankton  community structure  shallow lakes
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