#TITLE_ALTERNATIVE#

• Main Author: Rondo, Marthen
• Format: Theses
• Language: Indonesia
• Subjects: Ilmu hayati ; Biologi
• Online Access: https://digilib.itb.ac.id/gdl/view/8543
• Institution: Institut Teknologi Bandung

Abstract: <br /> <br /> <br /> A study on zoobenthos as ecological indicators of water quality of the River Cikapundung was conducted from August 15, 1981 to November 15, 1981. Physico-chemical changes of the water with time and along the course of the river, appeared to have caused changes and differences in the composition and the diversity of the zoobenthic animals. The water quality tends to decrease with the water course of the river. From the upper reaches down to the cultivation zone, the zoobenthic communities were dominated by insect larvae, whereas from the residential zone till the mouth. of the river, they were dominated by the annelids. Analyses of coefficients of similarity of Bray and Curtis showed that the zoobenthic communities of both the riffles and the pools in the upper reaches till the cultivation zone have different compositions. From the residential zone till the mouth of the river, the commposition of the zoobenthic communities of the pool was relatively similar, whereas similar composition of zoobenthic communities of the riffles was found between those of the residential and rice field zones and the mouth of the river. At each zone and along the cource of the river the zoobenthic composition of the riffle was very different from that of the pool. In general the number of zoobenthic taxa of the riffles was higher than that of the pools, however, the number of individuals was higher in the pools than in the riffles. The diversity index (H:) of benthic animals decreased significantly <br /> <br /> <br /> (p 0.05) with the water course and the decrease of water quality. The diversity index of the benthic animals of the riffles was significantly. higher (p IC 0.05) than that of the pools. Based on the integrated assessment of physical, chemical and biological factors it was concluded that along the course of the River Cikapundung, the degree of water quality ranged from unpolluted to heavily polluted. Indicators species in each category of pollution were also discused. <br />