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1
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The influence of morphological changes of small lowland river on discharge rate

100%
Oleszczuk R., Urbanski J., Gasowska M.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
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2014
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tom 46
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nr 4
The aim of the study was the comparison of the changes of cross-sections and longitudinal profi le of the Mała river at the distance of 600 m. The paper presents the geometry changes of the river from field measurements made in 2013 in comparison with design assumptions from 1967 which were implemented in 1971. The four (available historical) cross-sections (hm 7+700, 7+800, 7+900, 8+000) and longitudinal profile (hm 7+700÷8+300) of the river were analysed and compared. The large scale of subsidence of the land surface on both banks was observed (even to 0.5 m). Probably it is the effect of peat shrinkage and mineralization processes of organic soils. The bottom of the Mała river was still located at the same altitude in sand deposits in the analysed period 1971–2013. The designed slope of bottom of the Mała river equals 0.7‰ (1967) and present slope (2013) was estimated to be around 1‰. The subsidence of peat layers on both river banks, changes in cross-sections’ parameters (present irregular shapes in comparison with designed trapezoidal cross-sections) caused the reduction of cross-sectional area and water discharge of about 40–50% in comparison with parameters designed in 1967 and made in 1971.
2

An analysis of the impacts of climatic variability and hydrology on the coastal fisheries, Engraulis encrasicolus and Sepia officinalis, of Portugal

84%
Ullah H., Leitao F., Baptista V., Chicharo L.
International Journal of Ecohydrology and Hydrobiology
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2012
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tom 12
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nr 4
3
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Modelling of discharge, nitrate and phosphate loads from the Reda catchment to the Puck Lagoon using SWAT

84%
Marcinkowski P., Piniewski M., Kardel I., Gielczewski M., Okruszko T.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
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2013
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tom 45
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nr 2
This study presents an application of the SWAT model (Soil and Water Assessment Tool) in an agricultural, coastal catchment situated in northern Poland, draining an area of 482 km2 (the Reda catchment). The main objective of this study was calibration and validation of the model against daily discharge and water quality parameters (bi-monthly total suspended solids [TSS], nitrate nitrogen [N-NO3] and phosphate phosphorus [P-PO4] loads). Calibration and validation were conducted using the SWAT-CUP program and SUFI-2 (Sequential Uncertainty Fitting Version 2) algorithm. The Nash-Sutcliffe effi ciency, which was set as an objective function in calibration of all variables, was equal for discharge to 0.75 and 0.61 for calibration and validation periods, respectively. For TSS, N-NO3 and P-PO4 loads NSE was equal to 0.56, 0.62 and 0.53 in calibration period, and 0.22, 0.64 and –1.78 in validation period, respectively. For the calibration period all the results are satisfactory or good, while for the validation period the results for TSS and P-PO4 loads are rather poor, which is related mainly to the lack of homogeneity between calibration and validation periods. These results demonstrate that SWAT is an appropriate tool for quantifi cation of nutrient loads in Polish agricultural catchments, in particular for N-NO3. The model can therefore be applied for water resources management, for quantifi cation of scenarios of climate and land use change, and for estimation of the Best Management Practices efficiency.
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Sedimentation from suspension and sediment accumulation rate in the River Vistula prodelta, Gulf of Gdansk (Baltic Sea)

67%
Damrat M., Zaborska A., Zajaczkowski M.
Oceanologia
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2013
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tom 55
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nr 4
5

Meiobenthic communities of the Pomeranian Bay [Southern Baltic]: effects of proximity to river discharge

67%
Rokicka-Praxmajer J., Radziejewska T., Dworczak H.
Oceanologia
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1998
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tom 40
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nr 3
6

The hydrochemical and biological impact of the river Vistula on the pelagic system of the Gulf of Gdansk in 1994. Part 2. Primary production and chlorophyll a

51%
Ochocki S., Nakonieczny J., Chmielowski H., Zalewski M.
Oceanologia
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1995
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tom 37
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nr 2
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