Biodiversity and utilization pattern of Tajwid Lake in Pelalawan District, Riau Province

Abstract

Sutrisno E, Wahyudi A. 2015. Biodiversity and utilization pattern of Tajwid Lake in Pelalawan District, Riau Province. Pros Sem Nas Masy Biodiv Indon 1: 635-641. Tajwid Lake, located in Langgam sub-District, Pelalawan District, Riau Province has a unique ecosystem is typologically known as ‘oxbow lake’. The formation of the lake is shaped by the run-off of the Kampar’s river as the main river. The objective of this research was to identify the potentiality and status of biodiversity in Tajwid Lake. The data collection uses direct observations for existing condition and interviews with the elders and local community. The data processing was undertaken on the value of vegetation analysis. The results showed that in general, the region of Tajwid Lake was dominated by the nutrient-poor peat due to the sedimentation washing process by the influence of the tides. The occurred sedimentation had influenced the pH. The region of Tajwid Lake has a high biodiversity of flora and fauna. Tajwid Lake was dominated by varnish tree at the level of the large tree (IVI: 6.68), kemendangan in the level of the medium tree (IVI: 6.68), seduduk in the level of the small tree (IVI: 7.23), and grass in the level of seedlings (IVI: 15.38). The species of fish that founded were anak tabingalan, selais, motan, patulu, baung, limbat and kapiek. The existence of beehive trees and selais was endemic in Riau Province. The potential of non-timber forest products of high economic value was such as rattan and wild honey. The utilization conducted by the local community upholds the principles of solidarity and environmental sustainability based on local wisdom.