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open-access-imgOpen AccessPopulation of Proboscis Monkey (Nasalis lavatus) in Manggar River, Balikpapan City, Indonesia
Author(s)
Ike Mediawati,
Teguh Muslim,
Anwar Ma’ruf,
Mukhlisi,
Hery Seputro,
Bina Swasta Sitepu
Publication year2021
Publication title
iop conference series
Resource typeJournals
PublisherIOP Publishing
A population estimation of proboscis monkeys ( Nasalis larvatus ) has been conducted in Manggar River, Balikpapan. In this non-conservation area, the anthropogenic activities threaten the proboscis monkey habitat. Boat survey technique was applied along ± 17 km of the river in the morning and evening. The number of proboscis monkeys in the surveyed area was estimated to range from 57 to 69 individuals with estimated population density of 4.75 individuals/Km 2 . Moreover, the population of this primates was divided into 4 groups and the sex ratio between adult males and females was 1:2.33. The proboscis monkeys were distributed in the middle of the river to the upstream. The highest population was found in the upstream area with less human activities. Conservation efforts in the Manggar River need to be carried out considering the proboscis monkey habitat in the area has been fragmented and isolated. These efforts could involve local economic communities.
Subject(s)astronomy , biology , botany , demography , ecology , evening , geography , habitat , home range , morning , physics , population , population density , proboscis , sociology
Language(s)English
SCImago Journal Rank0.179
H-Index26
eISSN1755-1307
pISSN1755-1315
DOI10.1088/1755-1315/886/1/012068

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