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学科主题: Environmental Sciences
题名: Competition of bloom-forming marine phytoplankton at low nutrient concentrations
作者: Hu, Hanhua ; Zhang, Jun ; Chen, Weidong
通讯作者: Hu, HH, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China ; hanhuahu@ihb.ac.cn
关键词: Alexandrium tamarense ; nitrate ; phosphate ; Prorocentrum minimum ; red tides ; Skeletonema costatum
刊名: JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
发表日期: 2011
卷: 23, 期:4, 页:656-663
收录类别: SCI
部门归属: [Hu, Hanhua] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Zhang, Jun] Xiamen Univ, Sch Life Sci, Xiamen 361005, Peoples R China; [Chen, Weidong] City Hope Natl Med Ctr, Beckman Res Inst, Dept Gene Regulat & Drug Discovery, Duarte, CA 91010 USA
资助者: National Key Basic Research Special Foundation of China [2001CB409706]
摘要: Competition of three bloom-forming marine phytoplankton (diatom Skeletonema costatum, and dinoflagellates Prorocentrum minimum and Alexandrium tamarense) was studied through a series of multispecies cultures with different nitrate (NaNO3) and phosphate (NaH2PO4) levels and excess silicate to interpret red tide algae succession. S. costatum outgrew the other two dinoflagellates in nitrate and phosphate replete cultures with 10 mu mol/L Na2SiO3. Under nitrate limited (8.82 mu mol/L NaNO3) conditions, the growth of S. costatum was also dominant when phosphate concentrations were from 3.6 to 108 mu mol/L. Cell density of the two dinoflagellates only increased slightly, to less than 400 and 600 cells/mL, respectively. Cell density of S. costatum decreased with time before day 12, and then increased to 4000 cells/mL (1.5 mg/L dry biomass) at NaNO3 concentrations between 88.2 and 882 mu mol/L with limited phosphate (0.36 mu mol/L NaH2PO4) levels. In addition, P minimum grew well with a maximal cell density of 1690-2100 cells/mL (0.5-0.6 mg/L dry biomass). Although S. costatum initially grew fast, its cell density decreased quickly with time later in the growth phase and the two dinoflagellates were dominant under the nitrate-limited and high nitrate conditions with limited phosphate. These results indicated that the diatom was a poor competitor compared to the two dinoflagellates under limited phosphate; however, it grew well under limited nitrate when growth of the dinoflagellates was near detection limits.
语种: 英语
WOS记录号: WOS:000289871300018
ISSN号: 1001-0742
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/15684
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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Recommended Citation:
Hu, Hanhua; Zhang, Jun; Chen, Weidong.Competition of bloom-forming marine phytoplankton at low nutrient concentrations,JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2011,23(4):656-663
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