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Phosphorus fractions and alkaline phosphatase activity in sediments of a large eutrophic Chinese lake (Lake Taihu)
Zhou, Yiyong1; Song, Chunlei1; Cao, Xiuyun1; Li, Jianqiu1; Chen, Guoyuan1,2; Xia, Zhuoying1,2; Jiang, Pinghong1,2; Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2008-03-01
Source PublicationHYDROBIOLOGIA
ISSN0018-8158
Volume599Pages:119-125
AbstractSpatial, vertical, and seasonal variations in phosphorus fractions and in alkaline phosphatase activity (APA) were investigated in sediments in a large-shallow eutrophic Chinese lake (Lake Taihu) in 2003-2004. The phosphorus content was highest in the most seriously polluted lake area. Iron-bound phosphorus (Fe(OOH)-P) dominated (47% on average) among the phosphorus fractions determined according to Golterman (Hydrobiologia 335:87-95, 1996). Notably, organically-bound P comprised a further significant additional portion (acid-soluble + hot NaOH-extractable organic P = 25%), which was highest at the most polluted sites. The Fe(OOH)-P content was the lowest in spring (April, 2004), suggesting that degradation of organic matter led to the release of iron-bound phosphates. Sediment APA showed a significant positive relationship with both organically-bound P and Fe(OOH)-P. Consequently, organically-bound P is an important portion of the sediment phosphorus in Lake Taihu. It is mainly derived from freshly-settled autochthonous particles and from external discharges. Organically-bound P induces APA and may lead to the release of bioavailable phosphates from the organic sediments, thereby accelerating lake eutrophication.; Spatial, vertical, and seasonal variations in phosphorus fractions and in alkaline phosphatase activity (APA) were investigated in sediments in a large-shallow eutrophic Chinese lake (Lake Taihu) in 2003-2004. The phosphorus content was highest in the most seriously polluted lake area. Iron-bound phosphorus (Fe(OOH)-P) dominated (47% on average) among the phosphorus fractions determined according to Golterman (Hydrobiologia 335:87-95, 1996). Notably, organically-bound P comprised a further significant additional portion (acid-soluble + hot NaOH-extractable organic P = 25%), which was highest at the most polluted sites. The Fe(OOH)-P content was the lowest in spring (April, 2004), suggesting that degradation of organic matter led to the release of iron-bound phosphates. Sediment APA showed a significant positive relationship with both organically-bound P and Fe(OOH)-P. Consequently, organically-bound P is an important portion of the sediment phosphorus in Lake Taihu. It is mainly derived from freshly-settled autochthonous particles and from external discharges. Organically-bound P induces APA and may lead to the release of bioavailable phosphates from the organic sediments, thereby accelerating lake eutrophication.
SubtypeArticle
Keywordp Fractionation Alkaline Phosphatase Kinetics Distributions Sediments Interstitial Water Dredging Lake Eutrophication
Department[Zhou, Yiyong; Song, Chunlei; Cao, Xiuyun; Li, Jianqiu; Chen, Guoyuan; Xia, Zhuoying; Jiang, Pinghong] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Chen, Guoyuan; Xia, Zhuoying; Jiang, Pinghong] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Subject AreaMarine & Freshwater Biology
DOI10.1007/s10750-007-9185-z
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectMarine & Freshwater Biology
WOS IDWOS:000252890800015
WOS KeywordKINETICS
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8272
Collection期刊论文
Corresponding AuthorZhou, YY, Chinese Acad Sci, Inst Hydrobiol, 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
Zhou, Yiyong,Song, Chunlei,Cao, Xiuyun,et al. Phosphorus fractions and alkaline phosphatase activity in sediments of a large eutrophic Chinese lake (Lake Taihu)[J]. HYDROBIOLOGIA,2008,599:119-125.
APA Zhou, Yiyong.,Song, Chunlei.,Cao, Xiuyun.,Li, Jianqiu.,Chen, Guoyuan.,...&Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2008).Phosphorus fractions and alkaline phosphatase activity in sediments of a large eutrophic Chinese lake (Lake Taihu).HYDROBIOLOGIA,599,119-125.
MLA Zhou, Yiyong,et al."Phosphorus fractions and alkaline phosphatase activity in sediments of a large eutrophic Chinese lake (Lake Taihu)".HYDROBIOLOGIA 599(2008):119-125.
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