Riparian vegetation condition is associated with invertebrate assemblage composition in intermittent and humic streams

摘要: Riparian vegetation is known to provide environmental benefits for aquatic ecosystems and commonly used in the restoration of agricultural catchments. However, little information exists on influence riparian fauna intermittent or humic (coloured) streams. We examined ecological condition its stream amongst non-humic perennial reaches Ellen Brook catchment, south west Western Australia. Permutation-tests showed that flow regime (Global R = 0.444, P < 0.001) presence/absence 0.407, were most influential factors associated with invertebrate assemblage composition. influenced assemblages through provision organic matter food habitat, by shading channels, thereby limiting light algal growth. This was illustrated a higher proportion grazers (Chironominae Physidae) unvegetated streams more detritivores (Leptoceridae, Gripopterygidae, Ceinidae) vegetated Humic different streams; having fewer Cladocera Chironomidae grazing gastropods (Physidae Lynceidae). A significant variation width, salinity NOx-N concentrations because narrower, brackish less enriched than nitrogen benefited all types, showing revegetation as effective action it