The qualitative and quantitative analysis of the coupled C, N, P and Si retention in complex of water reservoirs

Abstract

The Solina–Myczkowce complex of reservoirs (SMCR) accounts about 15 % of the water storage in Poland. On the base of historical (2004–2006 years) data, the mass balance of nitrogen, phosphorus, total organic carbon and dissolved silicon were calculated. Large, natural affluents were the main source of the biogenic compounds in the studied ecosystem, delivering 90 % of TOC, 87 % of TN and 81 % of TP and DSi load. Moreover, results show that SMCR is an important sink for all the analysed biogenic elements. About 15–30 % of external loads were retained in the reservoir mainly in upper Solina. Due to the intensive processes of primary production, inorganic forms of nitrogen and phosphorus were mainly retained. Internal production of organic matter lead to an amount of the organic matter deposited in the sediments greater than was anticipated on the basis of the mass balance calculations. A constant load of dissolved silicon originating only from natural sources did not contribute to supplement deficits of Si present in the body of water in the reservoirs, promoting disturbances in N:C:P:Si ratios and another growth condition for other types of algae.

A new concept for risk analysis relating to the degradation of water reservoirs

“…In the years 2005–2006, on the basis of field research in a 2-year research cycle, loads of nutrients flowing into Myczkowce Reservoir were determined by measuring concentrations and volume of flows via all tributaries. A study conducted by Bartoszek and Koszelnik ( 2016 ) showed that ca. 30% of the phosphorus and ca.…”

“…This situation ensures relatively low temperatures in the reservoir water during summer, but also none of the freezing in winter that would be characteristic where stilling takes place. Moreover, the drainage basin is at the same time a main drainage basin for Solina Reservoir, whose characteristics and influence on water quality have been examined in some detail (Bartoszek and Koszelnik 2016 ; Koszelnik et al 2008 ). The greater part (c. 75%) of the 1250-km 2 catchment area is taken up by forest, followed by meadows and pastures.…”

“…Reservoirs play an important economic and natural role by stabilising hydraulic flows, storing water for drinking, agriculture, etc. and acting as aquatic habitats (Bartoszek and Koszelnik 2016 ; Kędra et al 2016 ). However, specific hydraulic and morphometric parameters leave such waters much more susceptible to degradation than natural lakes (Kozak et al 2013 ), ensuring that protection is a key challenge facing water-management bodies.…”

Effectiveness Assessment of a New System of Sediment Trap in the Investigation of Matter Sedimentation in a Reservoir—A Case Study

“…The key functions of small retention reservoirs are flood protection and securing a supply of water [1]. In practice, water retention in reservoirs is also associated with processes of the retention and deposition of suspended substances in water [2,3].…”

Distribution spatiale et mobilité du phosphore sédimentaire dans une retenue hydroélectrique

“…Ces barrages entrainent des discontinuités hydrologiques et modifient le transport des sédiments, matières en suspension et composés dissous, le long des cours d'eau (FRIEDL et WÜEST, 2002;VÖRÖSMARTY et al, 2003). L'augmentation du temps de résidence des masses d'eau et la diminution des phénomènes de turbulence favorisent la sédimentation des particules en suspension et le stockage d'éléments biogènes (BARTOSZEK et KOSZELNIK, 2016;SOW et al, 2016). Le P possède une forte affinité avec la fraction particulaire, ainsi l'accumulation de sédiment au sein des retenues crée une charge interne en P, potentiellement remobilisable vers la colonne d'eau.…”