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Phosphorus flux by macrobenthic invertebrates in a shallow eutrophic lake Donghu: spatial change
Ji, L.1,2; Berezina, N. A.3; Golubkov, S. M.3; Cao, X.1; Golubkov, M. S.3; Song, C.1; Umnova, L. P.3; Zhou, Y.1
2011
Source PublicationKNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS
ISSN1961-9502
Issue402
AbstractWe estimated phosphorus flux mediated by benthic invertebrates from the sediments to the water in a shallow eutrophic lake (lake Donghu, central China) and quantified spatial (littoral and central sites) and specific (among different benthic taxa) differences. The mass-specific excretion rates of phosphorus (soluble reactive phosphorus (SRP,eta mol.mg dry mass(-1).h(-1)) by benthic invertebrates (abundant taxa) were estimated experimentally and calculated as a final minus of initial nutrient mass divided by dry mass of organisms. Results showed high importance of chironomid larvae as a contributor to the total P flux from sediments to water in shallow lake Donghu. Benthic biomass (from 0.002 to 32.8 g dry mass.m(-2)) distribution and species composition (31 taxa) were studied (October 2009) in three regions of lake Donghu (Guozhenghu, Miaohu, Yujiahu) using samples from three depths: the shallow littoral site (0.2-1 m depth), central site with 2 m depth, and central site with more than 3 m depth. The total estimated SRP excretion by benthic invertebrate reaches 36% of the direct SPR flux from sediments to water in this lake. The phosphorus regeneration by benthic animals is the most intensive in the shallow littoral sites (69.5 mu mol P.m(-2).day(-1)) and at least 20 times greater than in central sites (3.4 mu mol P.m(-2).day(-1)) of lake Donghu. The results support notable differences in the SRP excretion rates between taxa and sites. The spatial difference in the SRP flux might be considered as a general feature of lakes with periodical changing oxygen near bottom.
SubtypeArticle
KeywordPhosphorus Excretion Zoobenthos Spatial Distribution Shallow Lake
DOI10.1051/kmae/2011073
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaFisheries ; Marine & Freshwater Biology
WOS SubjectFisheries ; Marine & Freshwater Biology
WOS KeywordALKALINE-PHOSPHATASE ACTIVITY ; EXCRETION ; NITROGEN ; ANIMALS ; RELEASE ; ECOSYSTEMS
WOS IDWOS:000299114500015
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/28803
Collection水环境工程研究中心
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Russian Acad Sci, Inst Zool, St Petersburg 199034, Russia
Recommended Citation
GB/T 7714
Ji, L.,Berezina, N. A.,Golubkov, S. M.,et al. Phosphorus flux by macrobenthic invertebrates in a shallow eutrophic lake Donghu: spatial change[J]. KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS,2011(402).
APA Ji, L..,Berezina, N. A..,Golubkov, S. M..,Cao, X..,Golubkov, M. S..,...&Zhou, Y..(2011).Phosphorus flux by macrobenthic invertebrates in a shallow eutrophic lake Donghu: spatial change.KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS(402).
MLA Ji, L.,et al."Phosphorus flux by macrobenthic invertebrates in a shallow eutrophic lake Donghu: spatial change".KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS .402(2011).
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