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Seasonal Variations in Chlorophyll a Concentrations in Relation to Potentials of Sediment Phosphate Release by Different Mechanisms in a Large Chinese Shallow Eutrophic Lake (Lake Taihu)
Song, Chunlei1; Cao, Xiuyun1; Liu, Yunbing1,2; Zhou, Yiyong1; Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Rd, Wuhan 430072, Peoples R China
2009
Source PublicationGEOMICROBIOLOGY JOURNAL
ISSN0149-0451
Volume26Issue:7Pages:508-515
AbstractThe relationship between chlorophyll a and fractionation of sediment phosphorus, inorganic phosphate-solubilizing bacteria (IPB), and organic phosphate-mineralizing bacteria (OPB) was evaluated in a large Chinese shallow eutrophic lake (Lake Taihu) and its embayment (Wuli Bay). At the three study sites, the increase of chlorophyll a concentrations in April paralleled those of the iron bound phosphate accounting for major portion of sediment inorganic phosphate, and in June significantly higher OPB and IPB numbers (especially OPB) in sediment were main contributors to the peaks of chlorophyll a concentration. Even though IPB peaked from February to June, it should serve as an unimportant P source due to the irrelevancy with chlorophyll a and soluble reactive phosphorus (SRP). By contrast, at the other site in the embayment, the calcium-bound phosphate was predominant and solid, which was difficult to be released, and neither IPB nor OPB were detectable in the sediment, indicating weak potential for phosphorus release from the sediment, which was reflected in the small seasonal variation in SRP concentration in water column. Hence, the extents to which the three general mechanisms behind phosphate release from sediment (desorption of iron bound phosphate, solubilization by IPB and enzymatic hydrolysis by OPB) operated were different depending on seasons and sites in Lake Taihu, they may jointly drive phosphate release and accelerate the eutrophication processes.; The relationship between chlorophyll a and fractionation of sediment phosphorus, inorganic phosphate-solubilizing bacteria (IPB), and organic phosphate-mineralizing bacteria (OPB) was evaluated in a large Chinese shallow eutrophic lake (Lake Taihu) and its embayment (Wuli Bay). At the three study sites, the increase of chlorophyll a concentrations in April paralleled those of the iron bound phosphate accounting for major portion of sediment inorganic phosphate, and in June significantly higher OPB and IPB numbers (especially OPB) in sediment were main contributors to the peaks of chlorophyll a concentration. Even though IPB peaked from February to June, it should serve as an unimportant P source due to the irrelevancy with chlorophyll a and soluble reactive phosphorus (SRP). By contrast, at the other site in the embayment, the calcium-bound phosphate was predominant and solid, which was difficult to be released, and neither IPB nor OPB were detectable in the sediment, indicating weak potential for phosphorus release from the sediment, which was reflected in the small seasonal variation in SRP concentration in water column. Hence, the extents to which the three general mechanisms behind phosphate release from sediment (desorption of iron bound phosphate, solubilization by IPB and enzymatic hydrolysis by OPB) operated were different depending on seasons and sites in Lake Taihu, they may jointly drive phosphate release and accelerate the eutrophication processes.
SubtypeArticle
KeywordChlorophyll a Inorganic Phosphate-solubilizing Bacteria Iron-bound Phosphate Lake Taihu Organic Phosphate-mineralizing Bacteria
Department[Song, Chunlei; Cao, Xiuyun; Liu, Yunbing; Zhou, Yiyong] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Liu, Yunbing] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Subject AreaMultidisciplinary ; Environmental Sciences ; Geosciences
DOI10.1080/01490450903061119
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
Funding OrganizationNational Science Foundation of China [40730528]; Chinese Academy of Sciences [(KZCX2-YW-426]; State Key Laboratory of Freshwater Ecology and Biotechnology [2008FB012] ; National Science Foundation of China [40730528]; Chinese Academy of Sciences [(KZCX2-YW-426]; State Key Laboratory of Freshwater Ecology and Biotechnology [2008FB012] ; National Science Foundation of China [40730528]; Chinese Academy of Sciences [(KZCX2-YW-426]; State Key Laboratory of Freshwater Ecology and Biotechnology [2008FB012] ; National Science Foundation of China [40730528]; Chinese Academy of Sciences [(KZCX2-YW-426]; State Key Laboratory of Freshwater Ecology and Biotechnology [2008FB012]
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Geology
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary
WOS IDWOS:000269876500007
WOS KeywordPHOSPHORUS ; NUTRIENT ; MICROORGANISMS
Funding OrganizationNational Science Foundation of China [40730528]; Chinese Academy of Sciences [(KZCX2-YW-426]; State Key Laboratory of Freshwater Ecology and Biotechnology [2008FB012] ; National Science Foundation of China [40730528]; Chinese Academy of Sciences [(KZCX2-YW-426]; State Key Laboratory of Freshwater Ecology and Biotechnology [2008FB012] ; National Science Foundation of China [40730528]; Chinese Academy of Sciences [(KZCX2-YW-426]; State Key Laboratory of Freshwater Ecology and Biotechnology [2008FB012] ; National Science Foundation of China [40730528]; Chinese Academy of Sciences [(KZCX2-YW-426]; State Key Laboratory of Freshwater Ecology and Biotechnology [2008FB012]
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7584
Collection期刊论文
Corresponding AuthorZhou, YY, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Rd, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Song, Chunlei,Cao, Xiuyun,Liu, Yunbing,et al. Seasonal Variations in Chlorophyll a Concentrations in Relation to Potentials of Sediment Phosphate Release by Different Mechanisms in a Large Chinese Shallow Eutrophic Lake (Lake Taihu)[J]. GEOMICROBIOLOGY JOURNAL,2009,26(7):508-515.
APA Song, Chunlei,Cao, Xiuyun,Liu, Yunbing,Zhou, Yiyong,&Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, 7 Donghu S Rd, Wuhan 430072, Peoples R China.(2009).Seasonal Variations in Chlorophyll a Concentrations in Relation to Potentials of Sediment Phosphate Release by Different Mechanisms in a Large Chinese Shallow Eutrophic Lake (Lake Taihu).GEOMICROBIOLOGY JOURNAL,26(7),508-515.
MLA Song, Chunlei,et al."Seasonal Variations in Chlorophyll a Concentrations in Relation to Potentials of Sediment Phosphate Release by Different Mechanisms in a Large Chinese Shallow Eutrophic Lake (Lake Taihu)".GEOMICROBIOLOGY JOURNAL 26.7(2009):508-515.
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