18 research outputs found
The effects of catchment liming on the chemistry and biology of upland Welsh streams: testing model predictions
No full textIntensive sampling and transplantation experiments reveal continued effects of episodic acidification on sensitive stream invertebrates
No full textDistributions of Ephemeroptera, Plecoptera, and Trichoptera of three maritime catchments differing in pH
No full textTemporal Changes in Biological Communities Affecting Models for Evaluating of Ecological Status
No full textPart 5: Information Tools for Global Environmental AssessmentInternational audienceTemporal changes in the structure of biological communities are one of the factors affecting water quality assessment systems. The aim of our work was to analyze the temporal variability of benthic macroinvertebrates and its consequences for the established streams typology. The data analyzed come from a biomonitoring of streams of the Czech Republic during 2002-2005. Changes of the structure of macroinvertebrates communities were observed using diversity indices (Shannon index) and biotic indices (saprobic index) and using actual changes in community structure. The time related shift in indices and the community composition was found, but the correlation of the locality typologies and the change was not found
The growth of brown trout (Salmo trutta) in mild winters and summer droughts in upland Wales.
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Persistence and stability of macroinvertebrate communities in streams of Denali National Park, Alaska: implications for biological monitoring
No full textRelationships between local population persistence, local abundance and regional occupancy of species: distribution patterns of diatoms in boreal streams
No full textAPPLIED ISSUES Increasing litter retention in moorland streams: ecological and management aspects of a field experiment
No full textThe influence of chemistry and habitat features on the microcrustacea of some upland Welsh streams
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