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The task of designating biotic indicators for the assessment of the ecological status of freshwater environments is difficult. The purpose of this study was to develop a method that uses different ecological categories of Crustacea from the hyporheic zone of the Arieş River (north-western Romania) to monitor water and sediment quality. Samples of fauna, water and sediments were collected monthly during...
The ecosystem dynamics in the vadose zone, the unsaturated layer between the surface and the groundwater table, was studied in five caves located in northwestern Romania. Hypogean and epigean copepod assemblages collected in drip water and in the associated pools were analyzed over a period of 12 and 7 months, respectively. The temporal variation of fauna in both habitats was related to a series of...
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