Filtration activity of invasive mussel species under wave disturbance conditions

摘要: Self-purification is one of the most important ecosystem functions rivers. Multiple human activities regularly impact this service, consequently altering river morphology, hydrology, and composition biotic assemblages that contribute to self-purification. However, little quantitative information available about importance such impacts. Hence, we tested how invasive mussel species self-purification under disturbed riverine conditions. In laboratory experiments, equipped with magnetic sensors recorded filtration activity were exposed artificial waves varying intensity simulated hydraulic effects inland navigation. Our results suggest are more resistant wave disturbance compared native species, as estimated threshold values for initiating shell closure very high (Dreissena rostriformis bugensis) or duration (Corbicula fluminea) degree closing (D. bugensis, C. low. Also demonstrated D. bugensis fluminea continued filtering during impact, whereas Dreissena polymorpha did not behave significantly differently than previously studied based on susceptibility parameters. Thus, appear be pre-adapted morphological disturbance, may compensate against other losses regarding function in rivers intensively used dominance systems disrupt natural food webs, compensation filter-feeding accompanied by loss functions.