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All Journal Jurnal Biologi Tropis Indenesian Journal of Tropical Biology Indenesian Journal of Tropical Biology
Putri, Regina Natasya
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences

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Demographic Parameters and Growth Projection of Spangled Ebony Langur Population (Trachypithecus auratus) in the Kerandangan Natural Tourism Park Protection Block Through a System Dynamics Approach Putri, Regina Natasya; Syaputra, Maiser; Anwar, Hairil
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i3.9845

Abstract

Indonesia is a country with rich biodiversity of flora and fauna, one of which is the langur from the primate family. Langurs are also listed on the 2008 International Union for Conservation of Nature and Natural Resources (IUCN) Red List as a primate species classified as vulnerable due to population decline and habitat degradation. Spangled Ebony Langurs play a crucial ecological role, influencing forest regeneration patterns and tree species diversity in their habitat. The purpose of this study was to provide information on demographic parameters and population growth of Spangled Ebony Langurs (Trachypithecus auratus) in Kerandangan Nature Tourism Park. The research method was carried out using the Line Transect method. The results of the study found 2 groups of Spangled Ebony Langurs with a total of 57 individuals. Distribution of structural patterns. Group size ranged from 27 to 30 individuals, with an overall population density of 0.35 individuals per hectare, a sex ratio of 1:8, and a birth rate of 0.26. The total population increased from 57 individuals (Year 1) to 68 individuals (Year 5), with a consistent population increase every year. This simulation assumes a constant birth rate of 26% per year and a death rate of 10% per year. In the fifth year, the population reached 68 individuals, with 2 births and 0 deaths. In conclusion, the langur population is predicted to increase steadily over the next 5 years. In the fifth year, the population is estimated to reach 68 individuals.
Arenga Palm Harvesting and Processing Practices by the Community of Kekait Village, West Lombok: Praktik Pemanenan dan Pengolahan Pohon Aren oleh Masyarakat Desa Kekait, Lombok Barat Sawaka, Rizki Sukarman; Zahra, Adelia; Putri, Regina Natasya
Indonesian Journal of Tropical Biology Vol. 1 No. 2 (2025): August 2025
Publisher : Yayasan Siti Widhatul Faeha

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to describe the traditional practice of harvesting and processing palm trees (Arenga pinnata) by the people of Kekait Village, West Lombok, as well as examining the cultural values and ethnobotanical knowledge that accompany them. The research method used is qualitative with an ethnobotanical approach, through participatory observation, in-depth interviews, and field documentation. The results of the study show that palm trees are still abundant and scattered on land owned by residents and wild land. The sap tapping technique is carried out through the stages of mantokin and bêgéyong, as well as the use of traditional tools such as bamboo, belakas, and laru wood as natural bioinhibitors. The process of processing sap into ant sugar is carried out without chemicals, reflecting local wisdom in maintaining the quality and sustainability of the environment. It was also found that human behavior and emotions can affect crop yields, which suggests an ecological-spiritual relationship between humans and trees. These findings confirm the importance of preserving local knowledge as part of biocultural conservation and sustainable management of natural resources.
Arenga Palm Harvesting and Processing Practices by the Community of Kekait Village, West Lombok: Praktik Pemanenan dan Pengolahan Pohon Aren oleh Masyarakat Desa Kekait, Lombok Barat Sawaka, Rizki Sukarman; Zahra, Adelia; Putri, Regina Natasya
Indonesian Journal of Tropical Biology Vol. 1 No. 2 (2025): August 2025
Publisher : Yayasan Siti Widhatul Faeha

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to describe the traditional practice of harvesting and processing palm trees (Arenga pinnata) by the people of Kekait Village, West Lombok, as well as examining the cultural values and ethnobotanical knowledge that accompany them. The research method used is qualitative with an ethnobotanical approach, through participatory observation, in-depth interviews, and field documentation. The results of the study show that palm trees are still abundant and scattered on land owned by residents and wild land. The sap tapping technique is carried out through the stages of mantokin and bêgéyong, as well as the use of traditional tools such as bamboo, belakas, and laru wood as natural bioinhibitors. The process of processing sap into ant sugar is carried out without chemicals, reflecting local wisdom in maintaining the quality and sustainability of the environment. It was also found that human behavior and emotions can affect crop yields, which suggests an ecological-spiritual relationship between humans and trees. These findings confirm the importance of preserving local knowledge as part of biocultural conservation and sustainable management of natural resources.
Co-Authors Hairil Anwar Sawaka, Rizki Sukarman Syahputra, Maiser Zahra, Adelia