Macroinvertebrate responses to regime shifts caused by eutrophication in subtropical shallow lakes

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 淡水生态学研究中心 > 期刊论文

	Macroinvertebrate responses to regime shifts caused by eutrophication in subtropical shallow lakes
	Pan, Bao-Zhu 1; Wang, Hong-Zhu 2; Pusch, Martin T.3; Wang, Hai-Jun 2
刊名	FRESHWATER SCIENCE
	2015-09-01
卷号	34 期号:3 页码:942-952
关键词	benthic macroinvertebrates regime shift eutrophication Yangtze lakes
ISSN号	2161-9549
英文摘要	The ecological status of subtropical floodplain lakes is threatened by eutrophication, which can shift lakes from a clear, macrophyte-dominated equilibrium state to a turbid, phytoplankton-dominated state. Such a shift is reflected in their macroinvertebrate assemblages, which may serve as good indicators of long-term changes in such lake ecosystems. We conducted a survey of benthic macroinvertebrates in 20 lakes in the Yangtze floodplain that were disconnected from the river channel to identify invertebrate response patterns along a gradient of eutrophication. Macroinvertebrate assemblages changed in parallel to the observed regime shift of a subgroup of those lakes. The most abundant groups were epiphytic invertebrates (e.g., Bithyniidae) in the macrophyte-dominated lakes and pollution-tolerant invertebrates (e.g., Tubificidae, Tanypus) in the phytoplankton-dominated lakes. Planktonic chlorophyll a concentration and wet biomass of submersed macrophytes were the key factors structuring macroinvertebrate assemblages. Macroinvertebrate taxon richness decreased along the eutrophication gradient, but density reached a minimum at a moderate eutrophication level and then increased. Scraper density (e.g., Bithyniidae) dropped abruptly at the moderate eutrophication level and did not increase again, whereas collector-gatherers (mainly Tubificidae and Chironomidae) and predators (e.g., Tanypus) increased continuously along the eutrophication gradient. We conclude that the abrupt disappearance of macrophytes during the regime shift means the loss of key habitat for biota associated with aquatic plants. Therefore, ecological restoration projects should be designed to reduce the nutrient concentration of floodplain lakes enough to allow re-establishment of a clear-water lake equilibrium dominated by aquatic macrophytes.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Ecology ; Marine & Freshwater Biology
研究领域[WOS]	Environmental Sciences & Ecology ; Marine & Freshwater Biology
关键词[WOS]	MULTIPLE STABLE STATES ; FRESH-WATER ; COMMUNITY DYNAMICS ; LOWLAND LAKES ; MACROPHYTES ; MACROZOOBENTHOS ; BIOMASS ; THRESHOLDS ; ECOSYSTEMS ; PHYTOPLANKTON
收录类别	SCI
语种	英语
WOS记录号	WOS:000359667700011
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/25884]
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.Changjiang River Sci Res Inst, Wuhan 430010, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 3.Leibniz Inst Freshwater Ecol & Inland Fisheries I, D-12587 Berlin, Germany
推荐引用方式 GB/T 7714	Pan, Bao-Zhu,Wang, Hong-Zhu,Pusch, Martin T.,et al. Macroinvertebrate responses to regime shifts caused by eutrophication in subtropical shallow lakes[J]. FRESHWATER SCIENCE,2015,34(3):942-952.
APA	Pan, Bao-Zhu,Wang, Hong-Zhu,Pusch, Martin T.,&Wang, Hai-Jun.(2015).Macroinvertebrate responses to regime shifts caused by eutrophication in subtropical shallow lakes.FRESHWATER SCIENCE,34(3),942-952.
MLA	Pan, Bao-Zhu,et al."Macroinvertebrate responses to regime shifts caused by eutrophication in subtropical shallow lakes".FRESHWATER SCIENCE 34.3(2015):942-952.