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The effect of riparian ecotone functional complexity and stream hydraulics on an upland river ecosystem has been analysed. The amount of nutrients retained by the bottom sediment was lowest on a sandy substrate and highest in wetland bays. A stream bed covered by Berula erecta had about three times higher nutrient retentive capacity than did a sandy substrate. The trophic potential of CPOM, measured...
The data obtained within the framework of a survey of macrozoobenthos and fish communities in Czech streams of the Danube and Elbe river basins were evaluated with respect to the relation between biodiversity and level of water (organic pollution) and/or physical habitat quality (heterogeneity, substrate, riparian vegetation, canalisation). The diversity of macrozoobenthos species was the highest...
Late spring/summer depth and velocity conditions of 16 ‘functional habitats’ were investigated in lowland rivers. The habitats significantly associated with shallower, faster areas were 'submerged, fine-leaved macrophytes' (20-40 cm deep, >0.45 ms-1) and 'macroalgae' (10-30 cm, >0.60 ms-1). 'Cobbles' were associated with slightly slower, shallower conditions (0-20 cm, 0.45 ms-1), 'gravels' with...
Transformation into shallow lakes can be a major post-harvesting land-use option for cutaway peatlands. We focused on lakes created on areas of a cutaway bog in the Seda Mire, Latvia, and the aim of our study was to analyse factors influencing water quality and communities in the cutaway lakes. It has been found that the residual peat amount and the lake feeding conditions (the balance between ground...
The physico-chemical parameters of coffee effluent consists of very high amount of BOD (2200 mg dm-3), TDS (1810 mg dm-3), NO3 (26.4 mg dm-3), NH4 + (12.6 mg dm-3), low pH (4.3) and zero DO values. Despite the reduction of these values by dilution effect of river water, BOD values as high as 1900 mg dm-3 and 1700 mg dm-3 were found at the downstream sites of Bore and Fite rivers. For biological assemblage...
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