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| site description: | Platform comprises two sites: the Sulejowski Reservoir and the Pilica River floodplain. The Pilica River is a major river feeding the Sulejów Reservoir, and is a left-side tributary of the largest Polish river - Vistula. The river has a length of 342 km and catchment area of 9258 km2. The research was conducted in the experimental floodplain of the Pilica River valley, located in the middle section of the river, upstream of the eutrophic Sulejów Reservoir. The Sulejów Reservoir was established in 1973 for multiple uses, with drinking water supply to the city of Łódź (agglomeration of about 1 million people), flood protection and recreation being the most important. At full capacity the reservoir has an area of 22 km2, mean depth of 3.3m, volume of 75 x 106 m3 and average water retention time (WRT) of 30 days. In 2004, the water company operating the drinking water facility ('Sulejów-Łódź' - Water Supply Systems Waterworks and Sewage Company) stopped the water abstraction from the reservoir intake and switched to wells. |
| ecosystem type under investigation: | |
| hierarchical level of plots/objects monitored: | |
| objects investigated by the study |
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| location - geographic co-ordinates: | latitude: 51° 27'' N longitude: 19° 59'' E |
| location - altitude: | 20 (above sea level) |
| Co-opperation: |
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| hypothesis / problem | Mitigation of eutrophication and toxic algal blooms in the Pilica catchment, providing recreational area and drinking water for the City of Lodz |
| aims of studies | The overall goal of the demonstration project is reduction of pollutant loads entering the reservoir and hence improvement of water quality. Implementation of ecohydrology and phytotechnology is to be applied specifically for: - elaboration of a method for reduction of point source pollution originated from a sewage treatment plant upstream of the reservoir, by harmonisation of technological and ecological measures, - development of a method of reduction of matter transport by a river to the reservoir by optimization of nutrient retention in floodplain areas; . |
| selection of publications resulting from the project |
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| the time span | data sets |
| since 1981 | hydrology of the reservoir |
| since 1996 | suspended matter (weight and mineral and organic matter content) |
| since 1996 | hydrochemistry of Pilica water (physical parameters: temperature and oxygen content, pH, conductivity and chemical parameters: P-PO4, N-NH4, N-NO2/3, DP, TP, TN) |
| since 1994 | monitoring of cyanobaterial blooms (reservoir) |
| sice 1996 | monitoring of the major tributaries of the reservoir sulejow (Pilica and Luciąża rivers) |
| 2002-2004 | magnitude and spatial distribution of a flooding matter that sediments on a floodplain and which is a factor enriching plant communities with biogenic compounds |
| 1999-2001 | topographic map, that was created on the basis of digital terrain model (DTM) and that is the source of knowledge of altitude ordinates of research stands |
| 1996-2005 | weekly monitoring included determination of alkaline phosphataseactivity (ATP) in water and sediments I(reservoir) |
| since 2000 | level, physical parameters and chemical composition of ground waters on the floodplain |
| 2002-2004 | a model of flooding of floodplain and duration of flooding periods for particular research sites during high water stages |
| 2002-2004 | Digital Terrain Model for Pilica River valley (for 40 km section between Przedbórz-Sulejów) |
| 2000-2001 | horizontal differences in the phytoplankton community across the reservoir |
| 2002 | weekly monitoring included determination of the concentrations of microcystins (cyanobacterial hepatotoxins) |
| since 2003 | molecular analysis of the microcystin synthetase (mcy) genes |
| 1999-2001 | areas of floodplain covered by particular plant communities |
| 1999-2001 | Phosphorus content in tissues of macrophytes, dominating on the examined floodplain; |
| 2002-2003 | rate of growth and accumulation of Phosphorus in biomass of Salix viminalis, energetic variety |
| administrative level | time span | kind of data |
| province | since XIX century | demography,structure of society |
| province, counties | since 1950 | structure of industrial production, agricultural production, forestry, |
| how many people | facility description |
| 10 | experimental plots and channels, field station with small laboratory, lecture hall for 15 people and housing |
