Studi Populasi dan Persebaran Lutung Sentarum (Presbytis chrysomelas ssp. cruciger Thomas 1892) di Resort Sepandan Taman Nasional Danau Sentarum.

Abstract

Lutung sentarum merupakan primata endemik Borneo yang persebarannya di Indonesia berada di Taman Nasional Danau Sentarum. Belum adanya penelitian terkait populasi dan persebaran lutung sentarum menjadikan penelitian ini penting untuk dilakukan. Tujuan dilakukannya penelitian ini untuk mengestimasi struktur populasi, memetakan persebaran dan mendeskripsikan faktor yang memengaruhi persebaran populasi lutung sentarum. Penelitian dilakukan pada bulan Juli–Agustus 2022 di Resort Sepandan. Pengambilan data populasi dilakukan melalui observasi lapang dengan metode sensus. Data persebaran diperoleh melalui penandaan dengan GPS dan pengolahan dengan QGIS, sedangkan faktor persebaran diperoleh melalui observasi lapang dan analisis vegetasi. Populasi lutung sentarum di Resort Sepandan terdiri dari tujuh kelompok dengan estimasi total populasi sebanyak 45 individu. Kepadatan populasi sebesar 0,5 individu/km2 dengan nisbah kelamin 1:3 dan persentase struktur populasi yang menunjukkan regressive population. Persebaran lutung sentarum meliputi hutan rawa tergenang musiman dan hutan dataran rendah. Ketersediaan pakan dan keberadaan primata lain sebagai kompetitor merupakan faktor biotik yang memengaruhi persebaran.

Lutung sentarum is a primate species endemic to Borneo island, whose distribution in Indonesia is in the Danau Sentarum National Park. The absence of research related to the population and distribution of lutung sentarum makes it important to conduct this study. The purpose of this research was to estimate the population structure, map distribution, and describe the factors that influence the distribution of the lutung sentarum. The research was conducted in July–August 2022 at Sepandan Resort. Population data were collected through field observations using concentration count methods. Distribution data were obtained through GPS marking and processing with QGIS, while distribution factors were obtained through field observations and vegetation analysis. Lutung sentarum’s population in Sepandan Resort consisted of 7 groups with an estimated total population of 45 individuals. The population density was 0.5 individuals/km2 with sex ratio of 1:3 and the percentage structure of the population that showed a regressive population. Lutung sentarum distribution included seasonally flooded swamp forests and lowland forests. Food availability and the presence of other primates as competitors were the biotic parameters that affected the distribution of the observed lutungs.