Fish Fauna Composition in Disturbed and Undisturbed Sites in Asap, Belaga

Runin, Paing (2010) Fish Fauna Composition in Disturbed and Undisturbed Sites in Asap, Belaga. [Final Year Project Report] (Unpublished)

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Abstract

This study was carried out at eight selected stations in Asap, Belaga. The objectives of the study were to record and to do comparative analysis the composition of fish fauna in disturbed and undisturbed sites in the study area, where two of the stations were inside the MPOB proposed area, two stations at seven years old oil palm plantation and other four stations at the secondary forest. Sampling method used was electroshocking. A total of 1,069 individuals of fish were caught comprising of 36 species, 20 genera and 8 families. Among the eight families that were caught, the family Cyprinidae was found dominant in every station. In terms of the total number of individuals caught, the dominant species is Nemacheilus kapuasensis. Among all the sampling stations, fish were caught most at station 4 with 258 individuals (24%) and fewest at station 3 with 36 individuals (4%). Station 1 showed the second lowest with 61 individuals (6%) caught. Station 4 which is located at the secondary forest showed the highest value of species diversity which is 1.0 and species richness at 8.3. However, station 1 which had just been cleared for oil palm plantation showed the lowest value of species diversity which is 0.5 and species richness is 1.7. This is due to high total suspended solids in the water (1.222 mg/L) at station 1 that was caused by erosion from the forest clearing activities. The distribution and population of the fish species were affected by the physical changes of their natural habitat. Therefore, composition and diversity of the fish fauna were affected by different land uses including the activities of oil palm plantation.

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