IHB OpenIR  > 期刊论文
Changes in benthic algal communities following construction of a run-of-river dam
Wu, Naicheng; Tang, Tao; Zhou, Shuchan; Jia, Xinghuan; Li, Daofeng; Liu, Ruiqiu; Cai, Qinghua; Wu, NC, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2009-03-01
Source PublicationJOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY
ISSN0887-3593
Volume28Issue:1Pages:69-79
AbstractEcological responses to dam construction are poorly understood, especially for downstream benthic algal communities. We examined the responses of benthic algal communities in downstream reaches of a tributary of the Xiangxi River, China, to the construction of a small run-of-river dam. From February 2003 to August 2006, benthic algae, chemical factors, and habitat characteristics were monitored upstream and downstream of the dam site. This period spanned 6 mo before dam construction and 37 mo after dam construction. Benthic algal sampling yielded 199 taxa in 59 genera that belonged to Bacillariophyta, Chlorophyta, and Cyanophyta. Some physical factors (flow velocity, water depth, and channel width) and 3 algal metrics (diatom species richness, Margalef diversity, and % erect individuals) were significantly affected by the dam construction, whereas chemical factors (e.g., NH4-N, total N, SiO2) were not. Nonmetric multidimensional scaling (NMS) ordinations showed that overall algal assemblage structure downstream of the dam sites was similar to that of upstream control sites before dam construction and for 1 year after dam construction (p > 0.05). However, sites belonging to upstream and downstream reaches were well separated on NMS axis 1 during the 2(nd) and 3(rd) years after dam construction. Our results suggest that impacts of dam construction on benthic algal communities took 2 to 3 y to emerge. Further development of a complete set of indicators is needed to address the impact of small-dam construction. Our observations underscore the need for additional studies that quantify ecological responses to dam construction over longer time spans.; Ecological responses to dam construction are poorly understood, especially for downstream benthic algal communities. We examined the responses of benthic algal communities in downstream reaches of a tributary of the Xiangxi River, China, to the construction of a small run-of-river dam. From February 2003 to August 2006, benthic algae, chemical factors, and habitat characteristics were monitored upstream and downstream of the dam site. This period spanned 6 mo before dam construction and 37 mo after dam construction. Benthic algal sampling yielded 199 taxa in 59 genera that belonged to Bacillariophyta, Chlorophyta, and Cyanophyta. Some physical factors (flow velocity, water depth, and channel width) and 3 algal metrics (diatom species richness, Margalef diversity, and % erect individuals) were significantly affected by the dam construction, whereas chemical factors (e.g., NH(4)-N, total N, SiO(2)) were not. Nonmetric multidimensional scaling (NMS) ordinations showed that overall algal assemblage structure downstream of the dam sites was similar to that of upstream control sites before dam construction and for 1 year after dam construction (p > 0.05). However, sites belonging to upstream and downstream reaches were well separated on NMS axis 1 during the 2(nd) and 3(rd) years after dam construction. Our results suggest that impacts of dam construction on benthic algal communities took 2 to 3 y to emerge. Further development of a complete set of indicators is needed to address the impact of small-dam construction. Our observations underscore the need for additional studies that quantify ecological responses to dam construction over longer time spans.
SubtypeArticle
KeywordRun-of-river Dam Construction Benthic Algal Communities Baci
Department[Wu, Naicheng; Tang, Tao; Zhou, Shuchan; Jia, Xinghuan; Li, Daofeng; Liu, Ruiqiu; Cai, Qinghua] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
Subject AreaEcology ; Marine & Freshwater Biology
DOI10.1899/08-047.1
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Natural Science Foundation of China [30330140]; Key Project of Knowledge Innovation Program of the CAS [KSCX2-YW-427]; National Basic Research Priorities Program [2002CD412310] ; National Natural Science Foundation of China [30330140]; Key Project of Knowledge Innovation Program of the CAS [KSCX2-YW-427]; National Basic Research Priorities Program [2002CD412310] ; National Natural Science Foundation of China [30330140]; Key Project of Knowledge Innovation Program of the CAS [KSCX2-YW-427]; National Basic Research Priorities Program [2002CD412310] ; National Natural Science Foundation of China [30330140]; Key Project of Knowledge Innovation Program of the CAS [KSCX2-YW-427]; National Basic Research Priorities Program [2002CD412310]
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology
WOS SubjectEcology ; Marine & Freshwater Biology
WOS IDWOS:000263481300007
WOS KeywordXIANGXI RIVER ; SMALL HYDROPOWER ; REMOVAL ; STREAM ; PHYTOPLANKTON ; PENNSYLVANIA ; ASSEMBLAGES ; DOWNSTREAM ; RESERVOIR ; SEDIMENT
Funding OrganizationNational Natural Science Foundation of China [30330140]; Key Project of Knowledge Innovation Program of the CAS [KSCX2-YW-427]; National Basic Research Priorities Program [2002CD412310] ; National Natural Science Foundation of China [30330140]; Key Project of Knowledge Innovation Program of the CAS [KSCX2-YW-427]; National Basic Research Priorities Program [2002CD412310] ; National Natural Science Foundation of China [30330140]; Key Project of Knowledge Innovation Program of the CAS [KSCX2-YW-427]; National Basic Research Priorities Program [2002CD412310] ; National Natural Science Foundation of China [30330140]; Key Project of Knowledge Innovation Program of the CAS [KSCX2-YW-427]; National Basic Research Priorities Program [2002CD412310]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7856
Collection期刊论文
Corresponding AuthorWu, NC, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
AffiliationChinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Wu, Naicheng,Tang, Tao,Zhou, Shuchan,et al. Changes in benthic algal communities following construction of a run-of-river dam[J]. JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY,2009,28(1):69-79.
APA Wu, Naicheng.,Tang, Tao.,Zhou, Shuchan.,Jia, Xinghuan.,Li, Daofeng.,...&Wu, NC, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China.(2009).Changes in benthic algal communities following construction of a run-of-river dam.JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY,28(1),69-79.
MLA Wu, Naicheng,et al."Changes in benthic algal communities following construction of a run-of-river dam".JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY 28.1(2009):69-79.
Files in This Item:
File Name/Size DocType Version Access License
Changes in benthic a(484KB) 开放获取--View Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wu, Naicheng]'s Articles
[Tang, Tao]'s Articles
[Zhou, Shuchan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, Naicheng]'s Articles
[Tang, Tao]'s Articles
[Zhou, Shuchan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, Naicheng]'s Articles
[Tang, Tao]'s Articles
[Zhou, Shuchan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Changes in benthic algal communities following construction of a run-of-river dam.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.