Effect of hydrological regime on the macroinvertebrate community in Three-Gorges Reservoir, China

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	Effect of hydrological regime on the macroinvertebrate community in Three-Gorges Reservoir, China
	Zhang, Min 1,2; Shao, Meiling 1; Xu, Yaoyang 1,2; Cai, Qinghua 1
刊名	QUATERNARY INTERNATIONAL
	2010-10-15
卷号	226 期号:1-2 页码:129-135
关键词	YANGTZE-RIVER GORGES RESERVOIR XIANGXI BAY OLIGOCHAETA RUNOFF LAKE DAM
ISSN号	1040-6182
通讯作者	Cai, QH, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
中文摘要	Dam construction resulting from river closure always leads to dramatic changes of the hydrological conditions and influences the aquatic ecosystems seriously. The response of the macroinvertebrate community during the 5 years (2 impoundment stages) after the impoundment of Three-Gorges Reservoir (TGR) was analyzed to illustrate the difference of the macroinvertebrate communities between the two stages after impoundment, indicating the hydrological effects on the aquatic ecosystem. The results showed that the total density of macroinvertebrates increased significantly, and displayed obvious seasonal patterns, after more than one year's ecosystem rebuilding. Density after the second impoundment did not show a significant difference compared to that of the two years before the second impoundment. The maximum value appeared in spring, with naididae dominating the community (relative abundance over 90%). Shannon-Wiener diversity index also displayed obvious seasonal fluctuations with the maximum value in winter and minimum in autumn. The NMS ordination to the macroinvertebrate community indicated the seasonal patterns have become relatively stable from 2005 in the first stage, except the autumn. After the second impoundment, the seasonal patterns became more stable, and even the macroinvertebrates in the autumn, when the impoundment plan was carried out, were also similar. The correlation analysis between the hydrological factors and the macroinvertebrate parameters showed that the effect of the hydrological regime began to be significant from 2005. The inflow discharge caused positive effects on tubificidae, but negative ones on naididae. Relatively high transparency was more beneficial to the survival of the naididae. Additionally, the water residence time appeared significant influence to the Shannon-Wiener diversity. (C) 2010 Elsevier Ltd and INQUA. All rights reserved.
英文摘要	Dam construction resulting from river closure always leads to dramatic changes of the hydrological conditions and influences the aquatic ecosystems seriously. The response of the macroinvertebrate community during the 5 years (2 impoundment stages) after the impoundment of Three-Gorges Reservoir (TGR) was analyzed to illustrate the difference of the macroinvertebrate communities between the two stages after impoundment, indicating the hydrological effects on the aquatic ecosystem. The results showed that the total density of macroinvertebrates increased significantly, and displayed obvious seasonal patterns, after more than one year's ecosystem rebuilding. Density after the second impoundment did not show a significant difference compared to that of the two years before the second impoundment. The maximum value appeared in spring, with naididae dominating the community (relative abundance over 90%). Shannon-Wiener diversity index also displayed obvious seasonal fluctuations with the maximum value in winter and minimum in autumn. The NMS ordination to the macroinvertebrate community indicated the seasonal patterns have become relatively stable from 2005 in the first stage, except the autumn. After the second impoundment, the seasonal patterns became more stable, and even the macroinvertebrates in the autumn, when the impoundment plan was carried out, were also similar. The correlation analysis between the hydrological factors and the macroinvertebrate parameters showed that the effect of the hydrological regime began to be significant from 2005. The inflow discharge caused positive effects on tubificidae, but negative ones on naididae. Relatively high transparency was more beneficial to the survival of the naididae. Additionally, the water residence time appeared significant influence to the Shannon-Wiener diversity. (C) 2010 Elsevier Ltd and INQUA. All rights reserved.
学科主题	Geography, Physical; Geosciences, Multidisciplinary
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geography, Physical ; Geosciences, Multidisciplinary
研究领域[WOS]	Physical Geography ; Geology
关键词[WOS]	YANGTZE-RIVER ; GORGES RESERVOIR ; XIANGXI BAY ; OLIGOCHAETA ; RUNOFF ; LAKE ; DAM
收录类别	SCI
资助信息	National Natural Science Foundation of China [30330140, 40671197]; CAS [KZCX2-YW-427]
语种	英语
WOS记录号	WOS:000283815300017
公开日期	2010-12-23
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/13504]
专题	水生生物研究所_淡水生态学研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Min,Shao, Meiling,Xu, Yaoyang,et al. Effect of hydrological regime on the macroinvertebrate community in Three-Gorges Reservoir, China[J]. QUATERNARY INTERNATIONAL,2010,226(1-2):129-135.
APA	Zhang, Min,Shao, Meiling,Xu, Yaoyang,&Cai, Qinghua.(2010).Effect of hydrological regime on the macroinvertebrate community in Three-Gorges Reservoir, China.QUATERNARY INTERNATIONAL,226(1-2),129-135.
MLA	Zhang, Min,et al."Effect of hydrological regime on the macroinvertebrate community in Three-Gorges Reservoir, China".QUATERNARY INTERNATIONAL 226.1-2(2010):129-135.