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题名: Macroinvertebrate community succession in the Three-Gorges Reservoir ten years after impoundment
作者: Li, Bin1, 2; Cai, Qing-hua1; Zhang, Min1; Shao, Mei-ling1
关键词: Secondary succession ; Macroinvertebrate community ; Seasonal pattern ; Inflow discharge ; Sedimentation
刊名: QUATERNARY INTERNATIONAL
发表日期: 2015-09-04
DOI: 10.1016/j.quaint.2014.06.017
卷: 380, 页:247-255
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Geography, Physical ; Geosciences, Multidisciplinary
研究领域[WOS]: Physical Geography ; Geology
英文摘要: The Three-Gorges Reservoir (TGR) is one of the world's largest reservoirs, whose ecological effects have attracted much attention. Focusing on the macroinvertebrate community dynamics and its relationship with hydrological factors ten years after impoundment, we provide an overview of the macroinvertebrate community succession in the TGR including determining factors. Pioneer species in the TGR was Polypedilum scalaenum while Nais inflata became dominant during non-flooding seasons commencing the second impounding year with extremely high relative abundance (up to 97%). An increase of water-level fluctuation range in the third impoundment stage did not significantly alter the steady seasonal pattern of macroinvertebrate community which formed following the second impounding year. MRPP (Multi-response Permutation Procedure) analysis showed significant differences between-season (A<0.3, P < 0.01) except between summer and autumn (A = -0.0165, P = 0.773). Macroinvertebrate assemblages were evidently correlated with inflow discharge during flood seasons and water retention time during non-flood seasons. Macroinvertebrate density showed severe reduction in summer following high velocity inflow current, and disappeared in autumn following vast sedimentation. The macroinvertebrate community gradually became reestablished following reduction of inflow discharge and sedimentation and increase of water retention time in winter and spring. Our analyses suggest that macroinvertebrate community in the TGR is regulated by the subtropical monsoon climate, commencing with seasonal cycles of destruction followed by reestablishment. (C) 2014 Elsevier Ltd and INQUA. All rights reserved.
关键词[WOS]: 3 GORGES RESERVOIR ; BENTHIC MACROINVERTEBRATES ; XIANGXI BAY ; YANGTZE-RIVER ; SEDIMENT TRANSPORT ; FINE SEDIMENT ; CHINA ; LEVEL ; LAKE ; DAM
语种: 英语
WOS记录号: WOS:000360653300027
ISSN号: 1040-6182
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27175
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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