Population structure and rarity status of bekantan (Nasalis larvatus Wurmb) on the Asam-Asam river side, South Kalimantan
DOI:
https://doi.org/10.30862/inornatus.v6i1.1249Keywords:
Asam-Asam river, Nasalis larvatus, scarcity statusAbstract
The bekantan (Nasalis larvatus Wurmb), as an endemic fauna of Borneo, has experienced a population decline. The purpose of this study is to analyze the population structure and status of the proboscis monkey in the area along the Asam-Asam River in Tanah Laut Regency. This study uses a descriptive method with a survey technique. The research locations were set at five sampling points where observations at each of the five sampling points were conducted for three days. The five sampling points were selected using purposive sampling with certain considerations. The sampling calculation technique was carried out using concentration count. The research results showed that the population structure of the bekantan consisted of fewer juveniles (average of 5), adolescents (average of 20) compared to adults (average of 10), with a population density of 19.5/ha, resulting in an age pyramid shaped like a shaved vase/jar. The rarity status of the bekantan in the research location is considered rare (endangered).
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