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题名: Distribution and population dynamics of cryptomonads in a Chinese lake with three basins varying in their trophic state
作者: Xia, Shuang1, 2; Cheng, Yingyin3; Zhu, Huan1; Liu, Guoxiang1; Hu, Zhengyu3
通讯作者: Liu, GX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
关键词: dissolved organic carbon ; dissolved total nitrogen ; environmental factors ; phytoplankton ; seasonal trend
刊名: PHYCOLOGICAL RESEARCH
发表日期: 2015-04-01
DOI: 10.1111/pre.12079
卷: 63, 期:2, 页:93-101
收录类别: SCI
文章类型: Article
部门归属: [Xia, Shuang ; Zhu, Huan ; Liu, Guoxiang] Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China ; [Xia, Shuang] South Cent Univ Nationalities, Coll Life Sci, Wuhan 430074, Peoples R China ; [Cheng, Yingyin ; Hu, Zhengyu] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
英文摘要: Cryptomonads are unicellular algae that are important primary producers in various aquatic ecosystems. However, their ecological importance was often neglected owing to their brittleness. Their population in freshwater was thought to be regulated mainly by grazing pressure, and the effects of lake trophy were less important. In this study, the cryptomonad species in three basins of Lake Donghu, a shallow lake in China were identified, and their distribution, seasonal dynamics, and relationships with several environmental factors were investigated. Eight cryptomonads were identified at species level by morphological examination; species belonging to the genera Komma and Cryptomonas were most common. Cryptomonads displayed inconsistent distribution and population dynamics among the three basins of different trophic status. They were the dominant species in the eutrophic basin, while their proportion was lower in the hypertrophic basin and in the mesotrophic basin. The biomass of cryptomonads was highest in the hypertrophic region. As a whole, cryptomonads kept low biomass during winter, while rapid waxing and waning of their population was observed in the other seasons. Cryptomonads species exhibit distinct seasonal trends. Canonical correspondence analysis revealed water temperature and dissolved total nitrogen were the most important factors that affected the composition of the cryptomonads community. Spearman correlation analysis demonstrated that the biomass of cryptomonads was positively correlated with pH value, dissolved total nitrogen and dissolved organic carbon. In conclusion, lake trophy is a crucial factor affecting the total cryptomonads population.
关键词[WOS]: EUTROPHIC LAKE ; PHYTOPLANKTON SUCCESSION ; GROWTH-CHARACTERISTICS ; MOLECULAR PHYLOGENY ; RED-TIDE ; CRYPTOPHYCEAE ; DONGHU ; ALGAE ; LIGHT ; SIZE
语种: 英语
WOS记录号: WOS:000353340200003
ISSN号: 1322-0829
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/25761
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
2.South Cent Univ Nationalities, Coll Life Sci, Wuhan 430074, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
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