2023 |
Pramana, Gede Tragya Suartika; Prasetyo, Lilik Budi; Iskandar, Entang The habitat suitability modelling of dare monkey (Macaca maura) in Bantimurung Bulusaraung National Park, South Sulawesi Journal Article In: Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan, vol. 13, no. 1, pp. 57–67, 2023, ISSN: 24605824. Abstract | Links | BibTeX | Tags: Dare monkey, environmental variables, habitat suitability, MaxEnt, species presence @article{Pramana2023, Sulawesi Island is the center of the Wallacea area, which has high biodiversity and is inhabited by several endemic plant and animal species, one of which is the dare monkey (Macaca maura) which is included in the category of endangered species due to the decline in habitat quality caused by shifting forest functions to other uses, competition feed between animals and rampant poaching due to being an agricultural pest are the reasons for the decline in the dare monkey population. This study aims to analyze habitat suitability and the effect of environmental variables on the habitat of dare monkeys in Bantimurung Bulusaraung National Park. The results of the study are expected to provide an overview of the planning of the Babul National Park area in preparing a priority scale for area management, especially those related to dare monkey conservation. The research was conducted through the development of a species distribution model using Maxent ver 3.4.4. The results show that the AUC value of the model is 0,887 with a standard deviation of ± 0.019 which is a feasible prediction model with a suitable habitat area of 247.34 km2 (36.5%) and 429.52 km2 (63.5%). The suitable habitat area is divided into low suitability class 113.13 km2 (46%), moderate suitability class 81.8 km2 (33%), and high suitability class 52.41 km2 (21%). While the environmental variables that most influence the presence of dare monkeys are land cover (36%), distance from the highway (33.3%), distance from rivers (11.5%), and distance from agricultural areas (10.4%). |
2021 |
Condro, Aryo Adhi; Prasetyo, Lilik Budi; Rushayati, Siti Badriyah; Santikayasa, I. Putu; Iskandar, Entang Predicting hotspots and prioritizing protected areas for endangered primate species in indonesia under changing climate Journal Article In: Biology, vol. 10, no. 2, pp. 1–23, 2021, ISSN: 20797737. Abstract | Links | BibTeX | Tags: Alpha diversity, climate change, Indonesia, MaxEnt, primate conservation, Protected areas, Species Distribution Model, species richness @article{Condro2021b, Indonesia has a large number of primate diversity where a majority of the species are threatened. In addition, climate change is conservation issues that biodiversity may likely face in the future, particularly among primates. Thus, species-distribution modeling was useful for conservation planning. Herein, we present protected areas (PA) recommendations with high nature-conservation importance based on species-richness changes. We performed maximum entropy (Maxent) to retrieve species distribution of 51 primate species across Indonesia. We calculated species-richness change and range shifts to determine the priority of PA for primates under mitigation and worst-case scenarios by 2050. The results suggest that the models have an excellent performance based on seven different metrics. Current primate distributions occupied 65% of terrestrial landscape. However, our results indicate that 30 species of primates in Indonesia are likely to be extinct by 2050. Future primate species richness would be also expected to decline with the alpha diversity ranging from one to four species per 1 km2. Based on our results, we recommend 54 and 27 PA in Indonesia to be considered as the habitat-restoration priority and refugia, respectively. We conclude that species-distribution modeling approach along with the categorical species richness is effectively applicable for assessing primate biodiversity patterns. |
2020 |
Atmoko, Tri; Mardiastuti, Ani; Bismark, M; Prasetyo, Lilik B; Iskandar, Entang Habitat suitability of Proboscis monkey (Nasalis larvatus) in Berau Delta, East Kalimantan, Indonesia Journal Article In: Biodiversitas, vol. 21, no. 11, pp. 5155-5163, 2020. Abstract | Links | BibTeX | Tags: Colobinae, MaxEnt, primate conservation, riverine forest, Species Distribution Model @article{Atmoko2020, The proboscis monkey (Nasalis larvatus) is an endemic species to Borneos’ island and is largely confined to mangrove, riverine, and swamp forest. Most of their habitat is outside the conservation due to degraded and habitat converted. Habitat loss is a significant threat to a decreased in the monkey's population. Berau Delta is an unprotected habitat of proboscis monkey, lacking in attention and experiencing a lot of disturbances. This study was conducted on April – August 2019; with aims of the study is to determine Species Distribution Modeling (SDM) for identifying proboscis monkey habitat suitability in Delta Berau, East Kalimantan. The MaxEnt algorithm was used to produce a habitat suitability map based on this species’ occurrence records and environmental predictors. We built the models using 208 points of proboscis monkey presence and 12 environment variables within the study area. Model performance was assessed by examining the area under the curve. The variables most influencing the habitat suitability model were the riverine habitat (60.9%), distance from the pond (16.0%), and distance from the coastline (5.2%). The proboscis monkey suitable habitat is only 9.32% (8,726.58 ha) from 93,631.41 ha total area. The appropriate habitat areas are Sapinang Island, Bungkung Island, Sambuayan Island, Saodang Kecil Island, Besing Island, Lati River, Bebanir Lama, Batu-Batu, and Semanting Bay. We provide some suggestions for the proboscis monkey conservation, which are local protection of uninhabited islands, participatory ecotourism management, and company involvement in protection and management efforts. |
2023 |
The habitat suitability modelling of dare monkey (Macaca maura) in Bantimurung Bulusaraung National Park, South Sulawesi Journal Article In: Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan, vol. 13, no. 1, pp. 57–67, 2023, ISSN: 24605824. |
2021 |
Predicting hotspots and prioritizing protected areas for endangered primate species in indonesia under changing climate Journal Article In: Biology, vol. 10, no. 2, pp. 1–23, 2021, ISSN: 20797737. |
2020 |
Habitat suitability of Proboscis monkey (Nasalis larvatus) in Berau Delta, East Kalimantan, Indonesia Journal Article In: Biodiversitas, vol. 21, no. 11, pp. 5155-5163, 2020. |