Biologische und chemische Untersuchungen an Bergbächen unterschiedlichen Versauerungsgrades

摘要

AbstractSummary: As ion balances and paleolimnological investigations prove, acidification is mainly the result of too much strain on the buffering capacity of catchment areas and waters by anthropogenic acid depositions. The situation is studied in mountain brooklets with different characteristics of their catchment areas. Distinct annual variations and functional relations of hydrological and chemical quantities can be described. The changed chemism of the water influences the structure of organisms and thus the function, stability and balance of matter as well as self‐purifying capacity of the water both directly (lethal effects) and indirectly (by the loss of species). The state of the water can be inferred from the biological findings in terms of the presence or absence of certain species (bioindicators