Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/84503
Type of publication: Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Aplinkos inžinerija / Environmental engineering (T004)
Author(s): Rudzianskaitė, Aurelija
Title: Nitrate concentration changes in stream of Lithuanian karst zone within the context groundwater-surface water interaction
Is part of: Nordic water 2012 : catchment restoration and water protection : XXVII Nordic hydrological conference : abstracts / editors : Ritta Kamula, Bjorn Kløve, Hanna Arola. Oulu, 2012
Extent: p. 153
Date: 2012
ISBN: 9789514298943
Abstract: Eutrophication of freshwater environments represents a major threat to the ecological health of surface water in agricultural catchments. High nutrient concentrations, caused by direct inputs into the surface water or indirect contributions via groundwater pathways, can result in excess algae growth. The transport and transformation of nitrate between groundwater and surface water may influence the success of restoration measures to improve stream and groundwater ecological conditions (Krause et al., 2009). The Lithuanian karst zone has specific geomorphological conditions. Here the sinkholes that formed in the course of karst processes create suitable conditions for surface water and pollutants to get into the subsurface water. The bigger rivers have more intensive mixing processes in the flow and receive runoff from greater areas, while quality of stream is under immediate impact of local factors and distinguished impact of particular factors in the catchments (Gaigalis and Smitiene, 2004). This study investigates the change of nitrate concentration in the small stream at the groundwater-surface water interaction. The studies were carried out in moraine sandy loam and peat soils of Lithuanian active karst zone. The site is situated at the headwater of stream G-l (tributary of the Apascia, area 1.63 km2). Active karst processes develop in these gypsum layers. The layers of gypsum-dolomite occur at 5-10 m depth from the soil surface (gypsum layers occur deeper) of the study area
Internet: https://hdl.handle.net/20.500.12259/84503
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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