Benthic Macroinvertebrate Composition in The Gunung Berlumut Recreational Forest, Kluang, Johor, Malaysia.

The macro invertebrate community structure was surveyed at Sungai Dengar sub-catchment located in Gunung Berlumut Recreational Forest in Kluang, Johor from 08 to 11 August 2009 by using surber net. Three (3) sampling sites (A, B & C) comprises of five (5) sampling points were fixed by Global Positioning System (GPS). Site A is located at most up-stream with elevation 300 meters from the mean sea level was categorized as pristine-pristine station, while site B was categorized as impacted station. The objective of the study was to identify and to compare the Benthic macro-invertebrate compositions in Sungai Dengar with different land use and elevation. Based on the result obtained, Diptera particularly Chironomidae were found abundant at station A and station C1. Station A also recorded an abundance of Mollusca particularly from the family Atyiedae and Palaemonidae. The results obtained also showed an abundance of the genus of Pseudiron, Potamanthus an Ephemerella from Ephermerotera order at the impacted stations (C1 & C2), besides Chirinomidae. Odonata, Trichoptera Coleoptera and Mesogastropoda were the order least found at all the sampling stations.