Effects of sediment dredging on water quality and zooplankton community structure in a shallow of eutrophic lake

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	Effects of sediment dredging on water quality and zooplankton community structure in a shallow of eutrophic lake
	Zhang, Shiyang 1,2; Zhou, Qiaohong 1; Xu, Dong 1; Lin, Jidong 3; Cheng, Shuiping 1; Wu, Zhenbin 1
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2010
卷号	22 期号:2 页码:218-224
关键词	zooplankton community structure redundancy analysis internal nutrient load
ISSN号	1001-0742
通讯作者	Wu, ZB, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
中文摘要	Effects of suction dredging on water quality and zooplankton community structure in a shallow of eutrophic lake, were evaluated. The results showed that a decreasing trend for levels of phosphorus, organic matter, total suspended solids, Chlorophyll a and Secchi transparency in the water column was found, while levels of water depth, electrical conductivity, total dissolved solids and NO3--N concentration increased markedly post-dredging. The effects of dredging on dissolved oxygen, pH value and temperature were almost negligible. The zooplankton community structure responded rapidly to the environmental changes caused mainly by dredging. As a result, the abundance of rotifers decreased, while the density of zooplanktonic crustaceans increased markedly. The representative taxa were Brachionus angularis, B. budapestinensis, B. diversicornis, Synchaeta spp. and Neodiaptomus schmackeri. A distinct relationship between zooplankton taxa composition and their environment, unraveled by a redundancy analysis, indicating that the measured environment contributed to the variations in the zooplankton community structure to some extent. The first four synthetic environmental variables explained 51.7% of the taxonomic structure. Therefore, with the reduction of internal nutrient load and a shift in dominance by less eutrophic species, it inferred that dredging might be one of effective measures for environmental improvements of such lakes.
英文摘要	Effects of suction dredging on water quality and zooplankton community structure in a shallow of eutrophic lake, were evaluated. The results showed that a decreasing trend for levels of phosphorus, organic matter, total suspended solids, Chlorophyll a and Secchi transparency in the water column was found, while levels of water depth, electrical conductivity, total dissolved solids and NO(3)(-)-N concentration increased markedly post-dredging. The effects of dredging on dissolved oxygen, pH value and temperature were almost negligible. The zooplankton community structure responded rapidly to the environmental changes caused mainly by dredging. As a result, the abundance of rotifers decreased, while the density of zooplanktonic crustaceans increased markedly. The representative taxa were Brachionus angularis, B. budapestinensis, B. diversicornis, Synchaeta spp. and Neodiaptomus schmackeri. A distinct relationship between zooplankton taxa composition and their environment, unraveled by a redundancy analysis, indicating that the measured environment contributed to the variations in the zooplankton community structure to some extent. The first four synthetic environmental variables explained 51.7% of the taxonomic structure. Therefore, with the reduction of internal nutrient load and a shift in dominance by less eutrophic species, it inferred that dredging might be one of effective measures for environmental improvements of such lakes.
学科主题	Environmental Sciences
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	CANONICAL CORRESPONDENCE-ANALYSIS ; ENVIRONMENTAL-IMPACT ; WEST LAKE ; NUTRIENT ; PHYTOPLANKTON ; INDICATORS ; ROTIFERS ; HANGZHOU ; ENGLAND ; BASIN
收录类别	SCI
资助信息	High-Tech Research Program (863) of China [2009ZX07106-002-004]; National Natural Science Foundation of China [30870221, 20877093, 50808172, 50909091]
语种	英语
WOS记录号	WOS:000274752100009
公开日期	2010-12-23
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/13719]
专题	水生生物研究所_水环境工程研究中心_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 Sch, Beijing 100049, Peoples R China 3.Wuhan Water Author, Wuhan 430014, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shiyang,Zhou, Qiaohong,Xu, Dong,et al. Effects of sediment dredging on water quality and zooplankton community structure in a shallow of eutrophic lake[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2010,22(2):218-224.
APA	Zhang, Shiyang,Zhou, Qiaohong,Xu, Dong,Lin, Jidong,Cheng, Shuiping,&Wu, Zhenbin.(2010).Effects of sediment dredging on water quality and zooplankton community structure in a shallow of eutrophic lake.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,22(2),218-224.
MLA	Zhang, Shiyang,et al."Effects of sediment dredging on water quality and zooplankton community structure in a shallow of eutrophic lake".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 22.2(2010):218-224.