2010
DOI: 10.2478/v10232-011-0029-5
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The content of phosphorus and its biologically available fractions in the sediments from flow-through lakes of the Wel River

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“…This may be related to their release into the water column (Ting and Appan 1996; Kaiserli et al 2002; Pardo et al 2003). The mobility of the fraction may be supported by an index of concentration variability (maximum/minimum) (Kentzer 2001). In the case of profundal and littoral sediments in Uzarzewskie Lake, the ratio was highest for fraction BD-P.…”
Section: Discussionmentioning
confidence: 99%
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“…This may be related to their release into the water column (Ting and Appan 1996; Kaiserli et al 2002; Pardo et al 2003). The mobility of the fraction may be supported by an index of concentration variability (maximum/minimum) (Kentzer 2001). In the case of profundal and littoral sediments in Uzarzewskie Lake, the ratio was highest for fraction BD-P.…”
Section: Discussionmentioning
confidence: 99%
“…We found a positive correlation for both stations: in the profundal zone ( r = 0.470, p = 0.042) and in the littoral zone ( r = 0.610, p = 0.005). Phosphorus concentrations in pore waters and above the sediments are commonly regarded as indices of the intensity of its transport across the sediment-water interface (Kentzer 2001 ; Komatsu et al 2006 ). A similar dependence between these parameters was also noted in Lake Swarzędzkie (Kowalczewska-Madura and Gołdyn 2012 ).…”
Section: Discussionmentioning
confidence: 99%
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“…It was also confirmed by a low share of fractions with the highest bioavailability (NH 4 Cl-P, BD-P and NaOH-P) and a high phosphorus fraction occurring in practically insoluble mineral and organic compounds (Res-P) 16 . The Res-P fraction is practically useless in the phosphorus release from bottom sediments and is characterised by the lowest solubility and bioavailability and is permanently accumulated in bottom sediments 17 . Thus, the sediment of this zone does not represent a significant internal source of phosphorus, but the high mineral content (more than 95%) may indicate both intensive mineralisation of sedimentary matter and other anthropogenic contaminants originating from the boat-fuelling station located here.…”
Section: Discussionmentioning
confidence: 99%
“…The second largest fraction was the HCl-P fraction (phosphorus with calcium). HCl-P and Res-P fractions represent biologically inaccessible phosphorus 17 . However, the summed share of the fractions with the highest mobility was low.…”
Section: Discussionmentioning
confidence: 99%