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Predicting assemblages and species richness of endemic fish in the upper Yangtze River
He, Yongfeng; Wang, Jianwei; Lek-Ang, Sithan; Lek, Sovan; He, YF, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Road, Wuhan 430072, Hubei, Peoples R China
2010
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume408Issue:19Pages:4211-4220
AbstractThe present work describes the ability of two modeling methods, Classification and Regression Tree (CART) and Random Forest (RF), to predict endemic fish assemblages and species richness in the upper Yangtze River, and then to identify the determinant environmental factors contributing to the models. The models included 24 predictor variables and 2 response variables (fish assemblage and species richness) for a total of 46 site units. The predictive quality of the modeling approaches was judged with a leave-one-out validation procedure. There was an average success of 60.9% and 71.7% to assign each site unit to the correct assemblage of fish, and 73% and 84% to explain the variance in species richness, by using CART and RF models, respectively. RF proved to be better than CART in terms of accuracy and efficiency in ecological applications. In any case, the mixed models including both land cover and river characteristic variables were more powerful than either individual one in explaining the endemic fish distribution pattern in the upper Yangtze River. For instance, altitude, slope, length, discharge, runoff, farmland and alpine and sub-alpine meadow played important roles in driving the observed endemic fish assemblage structure, while farmland, slope grassland, discharge, runoff, altitude and drainage area in explaining the observed patterns of endemic species richness. Therefore, the various effects of human activity on natural aquatic ecosystems, in particular, the flow modification of the river and the land use changes may have a considerable effect on the endemic fish distribution patterns on a regional scale. (C) 2010 Elsevier B.V. All rights reserved.
KeywordEndemic Fish Species Richness Pattern Environmental Variables Yangtze River Cart Rf
Department[He, Yongfeng; Wang, Jianwei] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China; [He, Yongfeng; Lek-Ang, Sithan; Lek, Sovan] Univ Toulouse, Lab Evolut & Divers Biol, CNRS, UMR 5174, F-31062 Toulouse 4, France; [He, Yongfeng] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
Subject AreaEnvironmental Sciences
Funding OrganizationConstruction Committee of China [SX2007-019, SX2009-019]; Ministry of Water Resources of the People's Republic of China [200901011]; French embassy ; Construction Committee of China [SX2007-019, SX2009-019]; Ministry of Water Resources of the People's Republic of China [200901011]; French embassy ; Construction Committee of China [SX2007-019, SX2009-019]; Ministry of Water Resources of the People's Republic of China [200901011]; French embassy ; Construction Committee of China [SX2007-019, SX2009-019]; Ministry of Water Resources of the People's Republic of China [200901011]; French embassy
Indexed BySCI
Language英语
WOS IDWOS:000280917300029
Funding OrganizationConstruction Committee of China [SX2007-019, SX2009-019]; Ministry of Water Resources of the People's Republic of China [200901011]; French embassy ; Construction Committee of China [SX2007-019, SX2009-019]; Ministry of Water Resources of the People's Republic of China [200901011]; French embassy ; Construction Committee of China [SX2007-019, SX2009-019]; Ministry of Water Resources of the People's Republic of China [200901011]; French embassy ; Construction Committee of China [SX2007-019, SX2009-019]; Ministry of Water Resources of the People's Republic of China [200901011]; French embassy
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/13467
Collection水生生物多样性与资源保护研究中心_期刊论文
Corresponding AuthorHe, YF, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Road, Wuhan 430072, Hubei, Peoples R China
Recommended Citation
GB/T 7714
He, Yongfeng,Wang, Jianwei,Lek-Ang, Sithan,et al. Predicting assemblages and species richness of endemic fish in the upper Yangtze River[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2010,408(19):4211-4220.
APA He, Yongfeng,Wang, Jianwei,Lek-Ang, Sithan,Lek, Sovan,&He, YF, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Road, Wuhan 430072, Hubei, Peoples R China.(2010).Predicting assemblages and species richness of endemic fish in the upper Yangtze River.SCIENCE OF THE TOTAL ENVIRONMENT,408(19),4211-4220.
MLA He, Yongfeng,et al."Predicting assemblages and species richness of endemic fish in the upper Yangtze River".SCIENCE OF THE TOTAL ENVIRONMENT 408.19(2010):4211-4220.
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