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Differentiated responses of Erysiphe alphitoides and E. hypophylla in urban conditions are described. The influence of transport pollution on the morphology of the mycelium, chasmotecium development and individual stages of the developmental cycle is discussed.
The main problem analysed in this paper is the impact of sediment accumulation and vegetation growth on transport of dissolved substances in a river. The system studied is the reach of the Warta River located upstream of the Jeziorsko Reservoir inlet. The three processes, namely sediment deposition, vegetation growth, and pollutant transport, are crucial for the functionality of reservoir. Classical HEC-RAS package is used for the reconstruction of steady flow conditions in the river reach. The transport of admixture is simulated by means of convection – dispersion model with additional elements describing storage of solutes in the floodplains. The results that the degree of maximum concentration decreases as the river bed geometry and vegetation cover are changed.
This paper presents results of the numerical modeling of pollution transport and groundwater quality monitoring for an old sanitary landfill where an advanced protection system has been introduced. The protection system consists of a vertical bentonite barrier and peripheral leachate drainage. The 3-D FEMWATER numerical program has been used for the groundwater flow and transport simulation. The local monitoring program includes chemical analyses of surface and ground water leachate concentration as well as groundwater level observations. The modeling and monitoring results were aimed at the assessment of the vertical barrier effectiveness as a groundwater protection system in landfill surroundings. These analyses were performed for the Radiowo landfill located near Warsaw. This site was established in 1962, and the permission for its exploitation was extended to the end of 2010. The landfill remedial works have been conducted since 1998 and include: installation of the vertical bentonite barrier, the leachate drainage system, the leachate recirculation system, the mineral cover, the degassing system, and the regulation of water relations in surroundings. The influence of remedial works on groundwater quality on landfill surroundings also has been analyzed in the paper.
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