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Impact of intensive sylviculture system (TPTII/SILIN) on understory bird community at Triwira Asta Bharata Forest Concession, East Kalimantan

Adi Susilo, Indra A.S.L.P. Putri


The objective of the research is to identify the impact of Intensive Indonesian Selective Cutting and Replanting System (TPTII/SILIN) at dipterocarp production forest on understory birds community. Two forest blocks were compared, one with TPTII/SILIN and the other with Indonesian Selective Cutting and Replanting System (TPTI).  At each forest block, 10 of 4 x 10 m mist nets were installed for three days and then they were moved to other spot for other three days.  Mist nets were opened from 06:00 to 17:00 and monitored every 15 minutes.  The trapped bird was identified and body size measured, then subsequently released.  Data was analyzed by using Important Value Index, Shannon-Weinner Diversity Index, Margalef Species Richness Index, Simpson Dominance Index, and Sorensen Similarity Index.  Number of individu, number of species, Shanon-Wiener Diversity Index were compared statistically using student t-test.  The result showed that Ceyx erithacus and Arcahnotera longirostra hold the highest important value index in TPTI and TPTII/SILIN respectively.  Bird abundance, Shannon-Weinner Diversity Index and Margalef Species Richness Index were lower in TPTI than TPTII/SILIN.  Meanwhile Simpson Dominance Index was higher at TPTI than TPTII/SILIN.  Statistical analysis for the data of the two forest blocks showed significant differences on number of individual, number of species and Shannon-Weiner Diversity Index.  TPTII/SILIN was better in supporting understory birds community than those of TPTI.


Intensive silviculture; species diversity; understory bird; forest concession

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