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Disentangling the roles of spatial and environmental variables in shaping benthic algal assemblages in rivers of central and northern China
Tang, Tao; Wu, Naicheng; Li, Fengqing; Fu, Xiaocheng; Cai, Qinghua; Cai, QH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
2013-12-01
Source PublicationAQUATIC ECOLOGY
ISSN1386-2588
Volume47Issue:4Pages:453-466
AbstractBenthic algae were collected from central and northern Chinese rivers to test the hypothesis that geographic location has significant contributions in shaping algal assemblages. We used Moran's eigenvector maps (MEM) to model spatial components and variation partitioning to quantify the influences of spatial and environmental variables on regional patterns of algal richness and community composition, respectively. We found that variation in algal richness was attributed to MEM component 2, 8, and 9 and the quadratic term of N-NO3. Regarding abundance data, latitude, longitude, and MEM component 1, 2, and 7 were important spatial variables. Although P-PO4, pH, and annual mean temperature were significant environmental variables influencing algal community composition, they were all spatially structured. Among the total explained variance in both algal metrics, spatial proportions were higher than that of environmental variables. We also found that abundant species of Achnanthidium minutissimum, Cocconeis placentula, Cymbella delicatula, Cymbella affinis, Cymbella turgidula, and Synedra ulna displayed clear spatially related patterns. In conclusion, the contributions of spatial and environmental variables to regional variation of algal assemblages are scale-dependent. As for our study scale (similar to 1,000 km), spatial control may be more important. Since spatial effects could obscure local environmental impacts on algal communities, appropriate study scale and statistical methods should be taken into account in algal bioassessment. We recommend inclusion of both algal richness and community composition in study of algal biogeography, due to their different relationships with spatial and environmental variables.; Benthic algae were collected from central and northern Chinese rivers to test the hypothesis that geographic location has significant contributions in shaping algal assemblages. We used Moran's eigenvector maps (MEM) to model spatial components and variation partitioning to quantify the influences of spatial and environmental variables on regional patterns of algal richness and community composition, respectively. We found that variation in algal richness was attributed to MEM component 2, 8, and 9 and the quadratic term of N-NO3. Regarding abundance data, latitude, longitude, and MEM component 1, 2, and 7 were important spatial variables. Although P-PO4, pH, and annual mean temperature were significant environmental variables influencing algal community composition, they were all spatially structured. Among the total explained variance in both algal metrics, spatial proportions were higher than that of environmental variables. We also found that abundant species of Achnanthidium minutissimum, Cocconeis placentula, Cymbella delicatula, Cymbella affinis, Cymbella turgidula, and Synedra ulna displayed clear spatially related patterns. In conclusion, the contributions of spatial and environmental variables to regional variation of algal assemblages are scale-dependent. As for our study scale (similar to 1,000 km), spatial control may be more important. Since spatial effects could obscure local environmental impacts on algal communities, appropriate study scale and statistical methods should be taken into account in algal bioassessment. We recommend inclusion of both algal richness and community composition in study of algal biogeography, due to their different relationships with spatial and environmental variables.
SubtypeArticle
KeywordBenthic Algae Biogeography Biodiversity Moran's Eigenvector Maps Spatial Patterns Variation Partitioning
Department[Tang, Tao ; Wu, Naicheng ; Li, Fengqing ; Fu, Xiaocheng ; Cai, Qinghua] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
DOI10.1007/s10452-013-9458-8
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationMajor Science and Technology Program for Water Pollution Control and Treatment [2012ZX07104-002, 2012ZX07501-002-07]; National Natural Science Foundation of China [30330140] ; Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07104-002, 2012ZX07501-002-07]; National Natural Science Foundation of China [30330140] ; Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07104-002, 2012ZX07501-002-07]; National Natural Science Foundation of China [30330140] ; Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07104-002, 2012ZX07501-002-07]; National Natural Science Foundation of China [30330140]
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology
WOS SubjectEcology ; Limnology ; Marine & Freshwater Biology
WOS IDWOS:000327070200008
WOS KeywordFRESH-WATER REALM ; COMMUNITY STRUCTURE ; DIATOM COMMUNITIES ; ECOLOGICAL VARIATION ; NEIGHBOR MATRICES ; SPECIES RICHNESS ; DIVERSITY ; DISPERSAL ; PATTERNS ; STREAMS
Funding OrganizationMajor Science and Technology Program for Water Pollution Control and Treatment [2012ZX07104-002, 2012ZX07501-002-07]; National Natural Science Foundation of China [30330140] ; Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07104-002, 2012ZX07501-002-07]; National Natural Science Foundation of China [30330140] ; Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07104-002, 2012ZX07501-002-07]; National Natural Science Foundation of China [30330140] ; Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07104-002, 2012ZX07501-002-07]; National Natural Science Foundation of China [30330140]
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/19761
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorCai, QH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
AffiliationChinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Tang, Tao,Wu, Naicheng,Li, Fengqing,et al. Disentangling the roles of spatial and environmental variables in shaping benthic algal assemblages in rivers of central and northern China[J]. AQUATIC ECOLOGY,2013,47(4):453-466.
APA Tang, Tao,Wu, Naicheng,Li, Fengqing,Fu, Xiaocheng,Cai, Qinghua,&Cai, QH .(2013).Disentangling the roles of spatial and environmental variables in shaping benthic algal assemblages in rivers of central and northern China.AQUATIC ECOLOGY,47(4),453-466.
MLA Tang, Tao,et al."Disentangling the roles of spatial and environmental variables in shaping benthic algal assemblages in rivers of central and northern China".AQUATIC ECOLOGY 47.4(2013):453-466.
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