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题名: Spatio-temporal variability of periphytic protozoa related to environment in the Niyang River, Tibet, China
作者: Liu Haiping1, 2, 3; Ye Shaowen1; Yang Xuefeng4; Guo Chuanbo1; Zhang Huijuan3; Fan Liqing3; Zhang Liangsong5; Sovan Lek6; Li Zhongjie1
关键词: Tibetan Plateau ; Niyang River ; periphytic protozoa ; environment ; spatio-temporal dynamic
刊名: CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
发表日期: 2017-05-01
DOI: 10.1007/s00343-017-5274-7
卷: 35, 期:3, 页:489-500
收录类别: SCI
文章类型: Article
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
英文摘要: The Niyang River, a main tributary of the Yarlung Zangbo River, is an important and typical plateau river ecosystem in Tibet, China. At present, few studies have focused on its aquatic living resources and river ecology. In this study, the composition, abundance, and diversity of periphytic protozoa were investigated across four seasons from 2008 to 2009 to better understand their spatio-temporal patterns and relationship to the environment. Our investigation shows that periphytic protozoa in the Niyang River contained 15 genera, belonged to Tubulinea, Alveolata, Discosea and Rhizaria, Alveolata possessed most genera, up to nine, with highest share in abundance, exceeding 50%, Difflugia and Glaucoma were dominant genera. Moreover, four diversity indices of periphytic protozoa, including species richness, total abundance, Shannon-Wiener diversity index and Pielou's evenness index, displayed a significant descending trend as the seasons continued, in the order of winter, spring, summer and autumn; with a significant difference existing between winter and summer (or autumn) for Shannon-Wiener diversity index and species richness (P < 0.05). Four of these diversity indices also presented a V-shaped pattern between the upper middle course of the Niyang River and the confluence of the Niyang River and Yarlung Zangbo River, with the lowest value occurred in the middle course of the Niyang River. However, no significant variation was found through the Niyang River (P > 0.05). In addition, canonical correlation analysis (CCA) shows that the densities of Difflugia, Glaucomais, Enchelydium, Cyphoderia, and Enchelys correlate with water temperature, alkalinity, hardness, pH, and dissolved oxygen, respectively. Lastly, the relationship between periphytic protozoa diversity and the environmental factors of the Niyang River can be predicted using classification and regression trees (CART) annalysis, which suggests that the total abundance and Shannon-Wiener diversity index would be higher when the elevation is above 3 308 m. On the other hand, the Shannon-Wiener diversity index and Pielou's evenness index would be lower when pH and ammoniacal nitrogen have lower or higher values. Finally yet importantly, close attention should be paid to periphytic protozoa and its environment to ensure sustainable development of the Niyang River ecosystem.
关键词[WOS]: TINTINNIDS CILIATA PROTOZOA ; FREE-LIVING PROTOZOA ; COMMUNITY COMPOSITION ; WATER-QUALITY ; ABUNDANCE ; TEMPERATURE ; DIVERSITY ; REGIONS ; BIOMASS ; INDIA
语种: 英语
WOS记录号: WOS:000399168400003
ISSN号: 0254-4059
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/29208
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Tibet Univ, Agr & Anim Husb Coll, Linzhi 860000, Peoples R China
4.Xilinhot 6 Middle Sch, Xilinhot 026000, Peoples R China
5.Fujian Marine Prod Tech Promot Stn, Fuzhou 350003, Peoples R China
6.Univ Paul Sabatier, CNRS, UMR EDB 5174, 118 Route Narbonne, Toulouse, France
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