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Title of Journal: Environ Monit Assess

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Abbravation: Environmental Monitoring and Assessment

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Springer Netherlands

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DOI

10.1007/bf01825094

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1573-2959

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Examination of reactive phosphate fluxes in an eut

Authors: Ebru Yesim Ozkan Baha Buyukisik
Publish Date: 2011/06/29
Volume: 184, Issue: 6, Pages: 3443-3454
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Abstract

Reactive phosphate RP fluxes over sediment in an eutrophic bay were obtained under different conditions The results were assessed together with water column sediment solid and liquidphase parameters The RP fluxes ranged from 0 to 1300 μgatP × m2d1 day depending on the sediment site and other variables At stations with relatively high net RP fluxes the clay fraction was 3 and disproportionate with salinity which explained why the RP effluxes decreased by inhibition of the organic coating on particulate matter with increased SO4 −2 ions and good competition of RP anions with SO4 −2 The RP flux in Fe/RP ratios 2 in surface water decreased to approach a minimum asymptotically which was thus defined with a hyperbolic curve to determine the maximum rate of the RP flux JRP The RPporewaterinitial/RPambient initial ratios were suggested to govern the net RP flux regionally so the critical value where the RP flux turns positive could indicate eutrophication with Chla values 500 μg/g So this study investigated the phosphate fluxes between sediment and water column and determined the factors influencing the RP fluxes in the inner bay of Izmir

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