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This survey analyzed the eco-physiological requirements of caddisflies assemblages in JiuRiver (south- west Romania). The output revealed that the communities are driven by asynergic combination of natural factors and pollutants. Their ecological profiles arediverse and the degree of tolerance is related to a decrease of water quality over alongitudinal gradient, overlapped with natural variation of physic-chemical factors. Theassemblage is dominated by hydropsychids, very tolerant to anthropogenic disturbances, andtwo other communities separated by large distances (characteristic of headwaters and oflowland areas, respectively) that do rather reveal stronger affinities to the microhabitatrequirements then to water pollution. Polyhedral diagrams were employed in order to revealcaddisflies larvae tolerances/intolerances to environmental parameters, in order to testtheir usefulness for local areas and less numerous samples, as frequently encountered inroutine surveys

knowledge and management of aquatic ecosystems

The ecological requirements of caddisflies larvae (Insecta: Trichoptera) and their usefulness in water quality assessment of a river in south-west Romania