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Spatial and temporal changes in phosphorus partitioning within a freshwater cyanobacterial mat community
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SYSNO ASEP 0350906 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Spatial and temporal changes in phosphorus partitioning within a freshwater cyanobacterial mat community Author(s) Borovec, Jakub (BC-A) RID
Sirová, D. (CZ)
Mošnerová, Petra (BC-A)
Rejmánková, E. (US)
Vrba, J. (CZ)Source Title Biogeochemistry. - : Springer - ISSN 0168-2563
Roč. 101, 1-3 (2010), s. 323-333Number of pages 11 s. Language eng - English Country NL - Netherlands Keywords phosphorus partitioning ; cyanobacterial mat ; diurnal changes ; sequential fractionation ; EPS Subject RIV DA - Hydrology ; Limnology R&D Projects QH81012 GA MZe - Ministry of Agriculture (MZe) CEZ AV0Z60170517 - HBU-Z, BC-A (2005-2011) AV0Z60050516 - BU-J (2005-2011) UT WOS 000285096700025 DOI 10.1007/s10533-010-9488-4 Annotation Spatial and temporal changes in phosphorus distribution, partitioning and mobility in the benthic cyanobacterial mat (CBM) were evaluated using sequential chemical fractionation. Total P (TP) content was extremely low, ranging from 0.025 to 0.1 mg g-1DW. Extracellular polymeric substances (EPS) appear to bind significant amounts of P (up to 52% of TP), followed by the autigenic apatites (up to 35% of TP). While mass balance calculations revealed virtually no exchange of P with the ambient environment, our results show that P is not a static nutrient, but that the partitioning of its forms and hence, presumably, its bioavailability, is dependent on spatial and temporal fluctuation of physico-chemical parameters, mainly pH, in most of the vertical profile. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2011
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