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题名: Flow-related disturbances in forested and agricultural rivers: influences on benthic macroinvertebrates
作者: Li, Fengqing1; Cai, Qinghua1; Jiang, Wanxiang1; Qu, Xiaodong1; Jia, Xinghuan1
通讯作者: Cai, QH (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei Province, Peoples R China.
关键词: flood ; temporal variation ; land-use type ; benthic macroinvertebrate ; community composition
刊名: INTERNATIONAL REVIEW OF HYDROBIOLOGY
发表日期: 2012-06-01
DOI: 10.1002/iroh.201111458
卷: 97, 期:3, 页:215-232
收录类别: SCI
文章类型: Article
部门归属: [Li, Fengqing; Cai, Qinghua; Jiang, Wanxiang; Qu, Xiaodong; Jia, Xinghuan] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei Province, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China[30330140, 40911130508]; Major S&T Special Project of Water Pollution Control and Management[2009ZX07528-003-04-01]; Research Grant of Hubei Shennongjia National Nature Reserve
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
摘要: Flow disturbances and conversions of land-use types are two major factors that influence river ecosystems. However, few studies have considered their interactions and separated their individual effects on aquatic organisms. Using monthly monitoring data from two streams with different land-use types (i.e. forest and agriculture) in the subtropical Central China over three years, we accurately predicted the changes of macroinvertebrate communities under flood disturbances and land-use type conversions. The dominant taxa and main community metrics significantly declined following flash floods. Several mayflies and chironomid had rapid rates of recovery, which could reach high abundance in three months after floods. And most of the community metrics recovered more rapidly in the forested river than that in the agricultural river. Stepwise multiple regression (SMR) models were used to investigate the relationships between biotic metrics and hydrological and temporal variables. For example, SMR revealed that floods reduced the stability of benthic communities, and the length of low flow period was of considerable importance to the recovery of the fauna. Two-way ANOVA indicated that intra-annual fluctuation had more (e.g. the total abundance and wet biomass), equal (e.g. total richness, EPT richness, percent EPT abundance, and Margalef index), or less (e.g. tolerant value) influence on macroinvertebrate communities than land-use types. Consequently, the effects of floods on macroinvertebrates should be taken into account when macroinvertebrates are used as indicators for assessing river ecosystem. ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
英文摘要: Flow disturbances and conversions of land-use types are two major factors that influence river ecosystems. However, few studies have considered their interactions and separated their individual effects on aquatic organisms. Using monthly monitoring data from two streams with different land-use types (i.e. forest and agriculture) in the subtropical Central China over three years, we accurately predicted the changes of macroinvertebrate communities under flood disturbances and land-use type conversions. The dominant taxa and main community metrics significantly declined following flash floods. Several mayflies and chironomid had rapid rates of recovery, which could reach high abundance in three months after floods. And most of the community metrics recovered more rapidly in the forested river than that in the agricultural river. Stepwise multiple regression (SMR) models were used to investigate the relationships between biotic metrics and hydrological and temporal variables. For example, SMR revealed that floods reduced the stability of benthic communities, and the length of low flow period was of considerable importance to the recovery of the fauna. Two-way ANOVA indicated that intra-annual fluctuation had more (e.g. the total abundance and wet biomass), equal (e.g. total richness, EPT richness, percent EPT abundance, and Margalef index), or less (e.g. tolerant value) influence on macroinvertebrate communities than land-use types. Consequently, the effects of floods on macroinvertebrates should be taken into account when macroinvertebrates are used as indicators for assessing river ecosystem. ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
关键词[WOS]: INVERTEBRATE COMMUNITY STRUCTURE ; LAND-USE INFLUENCES ; NEW-ZEALAND ; STREAM MACROINVERTEBRATES ; PULSE DISTURBANCE ; MOUNTAIN STREAM ; WATER-QUALITY ; XIANGXI RIVER ; IMPACTS ; FLOODS
语种: 英语
WOS记录号: WOS:000305332700004
ISSN号: 1434-2944
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16845
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, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei Province, Peoples R China

Recommended Citation:
Li, Fengqing; Cai, Qinghua; Jiang, Wanxiang; Qu, Xiaodong; Jia, Xinghuan.Flow-related disturbances in forested and agricultural rivers: influences on benthic macroinvertebrates,INTERNATIONAL REVIEW OF HYDROBIOLOGY,2012,97(3):215-232
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