Distribution patterns of benthic diatoms during summer in the Niyang River, Tibet, China
文献类型：期刊论文
| 作者 | Pei Guofeng2; Liu Guoxiang1 |
| 刊名 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2011-11-01 |
| 卷号 | 29期号:6页码:1192-1198 |
| 关键词 | benthic diatoms diatom density biodiversity bio-assessment Niyang River |
| ISSN号 | 0254-4059 |
| 通讯作者 | Liu, GX (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China. |
| 中文摘要 | The aim of this study was to investigate the distribution, density, community structure and biodiversity characteristics of benthic diatoms, and to analyze whether differences in species composition and abundance exist in different regions of the Niyang River, Tibet. Among the 157 taxa observed in 15 sampling sites in the main river and tributary, most were casual species (>100), the relative abundance of the genera Achnanthes and Fragilaria was 67% of the total relative abundance. Achnanthes minutissima was the most important species and dominated the whole river reaches (average relative abundance was 30%); the average diatom densities were 7.4 x 10(5) cell/cm(2) at all sites, and increased slowly from the upper section to downriver. The significant indicator taxa with higher relative abundance were Achnanthes biasolettiana (18.0%) and Fragilaria arcus (18.2%), Fragilaria capucina var. vaucheriae (31.2%), Fragilaria construens var. venter (11.3%) and Cymbella affinis (11.0%) in the upper, tributary and mid-river sections, respectively. Achnanthes minutissima was the most abundant species (56%) in the downriver section. Biodiversity indices showed a gradual decrease from the up-to down-river section, and dominant species were more abundant in the upper and mid-river sections than in the downriver section. A two-way indictor species analysis (TWINSPAN) of diatom composition clearly showed four different groups, namely the upper, mid, lower and tributary sections. Detrended correspondence analysis (DCA) supported the results of TWINSPAN, and the characteristics of site distribution and species composition in the Niyang River supported the spatial structure of diatom assemblages. This study indicates that bio-assessment programs utilizing benthic diatoms could clearly benefit lotic water with regional stratification. |
| 英文摘要 | The aim of this study was to investigate the distribution, density, community structure and biodiversity characteristics of benthic diatoms, and to analyze whether differences in species composition and abundance exist in different regions of the Niyang River, Tibet. Among the 157 taxa observed in 15 sampling sites in the main river and tributary, most were casual species (>100), the relative abundance of the genera Achnanthes and Fragilaria was 67% of the total relative abundance. Achnanthes minutissima was the most important species and dominated the whole river reaches (average relative abundance was 30%); the average diatom densities were 7.4 x 10(5) cell/cm(2) at all sites, and increased slowly from the upper section to downriver. The significant indicator taxa with higher relative abundance were Achnanthes biasolettiana (18.0%) and Fragilaria arcus (18.2%), Fragilaria capucina var. vaucheriae (31.2%), Fragilaria construens var. venter (11.3%) and Cymbella affinis (11.0%) in the upper, tributary and mid-river sections, respectively. Achnanthes minutissima was the most abundant species (56%) in the downriver section. Biodiversity indices showed a gradual decrease from the up-to down-river section, and dominant species were more abundant in the upper and mid-river sections than in the downriver section. A two-way indictor species analysis (TWINSPAN) of diatom composition clearly showed four different groups, namely the upper, mid, lower and tributary sections. Detrended correspondence analysis (DCA) supported the results of TWINSPAN, and the characteristics of site distribution and species composition in the Niyang River supported the spatial structure of diatom assemblages. This study indicates that bio-assessment programs utilizing benthic diatoms could clearly benefit lotic water with regional stratification. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Limnology ; Oceanography |
| 研究领域[WOS] | Marine & Freshwater Biology ; Oceanography |
| 关键词[WOS] | EPILITHIC DIATOMS ; ALGAE ; GRADIENTS ; STREAMS ; COMMUNITIES ; INDICATORS ; DIVERSITY ; QUALITY ; MODELS ; URBAN |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China[30970550] |
| 语种 | 英语 |
| WOS记录号 | WOS:000299039400006 |
| 公开日期 | 2012-09-25 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/17065]  |
| 专题 | 水生生物研究所_藻类生物学及应用研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.S Cent Univ Nationalities, Key Lab Microorganism & Biotransformat, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pei Guofeng,Liu Guoxiang. Distribution patterns of benthic diatoms during summer in the Niyang River, Tibet, China[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2011,29(6):1192-1198. |
| APA | Pei Guofeng,&Liu Guoxiang.(2011).Distribution patterns of benthic diatoms during summer in the Niyang River, Tibet, China.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,29(6),1192-1198. |
| MLA | Pei Guofeng,et al."Distribution patterns of benthic diatoms during summer in the Niyang River, Tibet, China".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 29.6(2011):1192-1198. |
入库方式： OAI收割
来源：水生生物研究所
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