EVALUATION OF THE ENVIRONMENTAL QUALITY BY INDICATION OF BENTHIC MACROINVERTEBRATE FAUNA ON SEVERAL URBAN SPRINGBROOKS

Abstract

The benthic macroinvertebrate faunas and the habitat factors were invesigated on urban springbrooks in the Tama area of Tokyo. A total of 43 taxa were found, 35 of which were insects. An isopod, Asellus hilgendorfii was the most abundant, and Chironomidae, Baetis spp., Nemoura spp., Apatania abberans and Smiulium spp. were usual as insect. The correspondence relationship between the fauna and the habitat factors was analyzed, and the biotic indices for envronmental quality of springbrook were estimated on the main taxa. With the results, new methods were examined, which be expected to use for evaluation of environmental quality on springbrooks.