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题名: Nutrient Utilization Strategies of Algae and Bacteria after the Termination of Nutrient Amendment with Different Phosphorus Dosage: A Mesocosm Case
作者: Song, Chunlei1; Sondergaard, Morten2; Cao, Xiuyun1; Zhou, Yiyong1
关键词: Algae ; alkaline phosphatase ; bacteria ; mesocosm ; nutrient utilization strategies
刊名: GEOMICROBIOLOGY JOURNAL
发表日期: 2018
DOI: 10.1080/01490451.2017.1350890
卷: 35, 期:4, 页:294-299
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]: Environmental Sciences ; Geosciences, Multidisciplinary
研究领域[WOS]: Environmental Sciences & Ecology ; Geology
英文摘要: The impacts of nutrient amendment termination on the growth strategies of algae and bacteria were conducted in experimentally designed mesocosm in which two different phosphorus (P) dosages were treated. The algal community composition did not change greatly in Group A (low phosphorus) and Group B (high phosphorus). In Group A, the secretion of bacterial alkaline phosphatase (AP) after nutrient termination stimulated bacterial phosphorus acquisition, which caused the decrease in algal phosphorus levels, in terms of the increase of bacterial abundance and bacterial production, as well as the decrease in chlorophyll a and particulate organic carbon. The algal collapse resulted in dissolved organic carbon secretion, further fuelling bacterial growth. In Group B, excess phosphorus input urged algae to store phosphorus as poly-phosphate. When phosphorus input ceased, in order to maintain their used high phosphorus demand, algae strengthened to gain phosphorus through the hydrolysis of dissolved organic phosphorus in water column and ploy-phosphate inside the cells by AP, evidenced by high algal alkaline phosphatase activity, algal growth continuation, and bacterial growth decline. These facts indicated that phosphorus content should reduce to a lower level than expected, so that algal bloom can be effectively controlled in eutrophic water bodies.
关键词[WOS]: LAKE-KINNERET ; EXTRACELLULAR PHOSPHATASES ; PROTEIN-SYNTHESIS ; PHYTOPLANKTON ; NITROGEN ; RESERVOIR ; SYSTEMS
语种: 英语
项目资助者: Sino-Danish scientific and technological cooperation grant(AM 14:06) ; National Natural Science Foundation of China(41230748 ; State Key Laboratory of Freshwater Ecology and Biotechnology(2016FBZ07) ; 41273089 ; 41573110)
WOS记录号: WOS:000424756900006
ISSN号: 0149-0451
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/50670
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Key Lab Algal Biol, Wuhan 430072, Hubei, Peoples R China
2.Univ Copenhagen, Freshwater Biol Lab, Hillerod, Denmark
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