Disentangling the roles of spatial and environmental variables in shaping benthic algal assemblages in rivers of central and northern China
文献类型：期刊论文
| 作者 | Tang, Tao; Wu, Naicheng; Li, Fengqing; Fu, Xiaocheng; Cai, Qinghua |
| 刊名 | AQUATIC ECOLOGY
 |
| 出版日期 | 2013-12-01 |
| 卷号 | 47期号:4页码:453-466 |
| 关键词 | Benthic algae Biogeography Biodiversity Moran's eigenvector maps Spatial patterns Variation partitioning |
| ISSN号 | 1386-2588 |
| 通讯作者 | Cai, QH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China. |
| 中文摘要 | 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. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Ecology ; Limnology ; Marine & Freshwater Biology |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| 关键词[WOS] | FRESH-WATER REALM ; COMMUNITY STRUCTURE ; DIATOM COMMUNITIES ; ECOLOGICAL VARIATION ; NEIGHBOR MATRICES ; SPECIES RICHNESS ; DIVERSITY ; DISPERSAL ; PATTERNS ; STREAMS |
| 收录类别 | SCI |
| 资助信息 | Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07104-002, 2012ZX07501-002-07]; National Natural Science Foundation of China [30330140] |
| 语种 | 英语 |
| WOS记录号 | WOS:000327070200008 |
| 公开日期 | 2014-01-24 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/19761]  |
| 专题 | 水生生物研究所_淡水生态学研究中心_期刊论文 |
| 作者单位 | Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China |
| 推荐引用方式 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.(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. |
入库方式： OAI收割
来源：水生生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。