Thomas Langur (Presbytis thomasi) Daily Movement in Jantho Natural Reserve, Aceh Province
DOI:
https://doi.org/10.31938/jsn.v13i2.469Keywords:
Arboreal, Diurnal, Home range, Thomas langur, VegetationAbstract
Thomas langur (Presbytis thomasi) is an endemic primate to Aceh and North Sumatra. These primates have a local name, “Kedih.” Forest fires and forest functions conversion into oil palm plantations are pressure on their habitat and have decreased wild populations in nature. As arboreal animals, their movements depend heavily on the connectivity of vegetation. Comprehensive research is needed to obtain horizontal and vertical daily movement data of the thomas langur. This study used GPS to take coordinates, a camera to document Thomas langur and its food trees, and Thomas langur as a research object. The data recorded includes the coordinates of each forage tree, the type of forage tree, and the height of the canopy strata used by Thomas langur for foraging. The hardwood movement data was plotted on ArGis 10.1 to get the horizontal hardness movement area. Tree height data was obtained by measuring the tree height where Thomas langur stopped to look for food. Kedih movements to look for food are carried out daily from morning to evening. The results showed that the short length of movement was highly depend on the availability of forage trees. The denser the forage trees, the shorter the daily activities of Thomas langur. This daily movement can be done horizontally and vertically. Horizontally, Thomas langur moved to follow the forage trees, and vertically, Thomas langur moved by utilizing the height of the forage trees. Horizontally, Thomas langur moved 144.92 m in the rehabilitation block and 62.30 m in the protection block. The Thomas langur home ranged in the rehabilitation block is 27 ha, and 25 ha in the protected block. Vertically, Kedih in the rehabilitation blocks and protected blocks moved to trees with a height of 11-20 m, as much as 49%.
Downloads
References
Akbar, M. A., Rizaldi., Novarino, W., Farajallah, D. P., & Tsuji, Y. (2019). Short communication: Activity Budget and Diet in Silvery Lutung Trachypithecus cristatus at Gunung Padang, West Sumatra, Indonesia. Biodiversitas. 20 (3): 719-724. DOI: 10.13057/biodiv/d200315
Alikodra, H. S. (2019). Ekologi Konservasi Satwaliar. Hidup Harmoni Dengan Alam. Bogor: IPB Press
Bailey, J. A. (1984). Principle of Wildlife Management. Colorado State University
Burt, W. H. (1940). Territorial Behavior and Populations of Some Small Mammals in Southern Michigan. Miscellaneous Publications Museum of Zoology. University of Michigan
Elser, S. K., Chung, N. H., & Brohl, C. A. (2015). Reintroduction of the Critically Endangered Delacour’s Langur (Trachypithecus delacouri) into van long nature reserve, Ninh Binh Province, Vietnam. Vietnamase Journal of Prymatology. 2(3): 1-13
Faridha, N. (2014). Deskripsi Habitat Kedih Presbytis thomasi Di Hutan Alam Panton Luas Kecamatan Sama Dua Kabupaten Aceh Selatan. Skripsi. FKIP Unsyiah.
Gurmaya, J. K. (1986). Ecology and Behavior of Presbytis thomasi in Northern Sumatera. Primates. 27(2):151–172
Hendrawan, R., Sumiyati, D., Nasrudin, A., Nasution, S. G., & Millah, R. (2019). Karakteristik Habitat Lutung (Trachypithecus auratus É. Geoffroy, 1812) pada Vegetasi Hutan Dataran Rendah Blok Cipalawah, Cagar Alam Leuweung Sancang, Kabupaten Garut, Jawa Barat. PROS SEM NAS MASY BIODIV INDON. 5(2); 399-405
Kyes, RC., Iskandar, E., Kyes, P., & Novak, MFSX. 2016. Field Course in Consercation Biology & Global Health: At te Human- Environment Interface.
Daftar satwa dilindungi Indonesia. 2018. Peraturan Menteri LHK No. P. 20 MENLHK SETJEN/
KUM.1/6/2018
Ruslin, F., Yaakop., Salmah., Zain, B. M. (2014). A preliminary study on activity budget, daily travel distance and feeding behaviour of long-tailed macaques and spectacled dusky leaf monkeys in Bangi Campus of Universiti Kebangsaan Malaysia, Selangor. AIP Conference Proceedings 1614, 688; https://doi.org/10.1063/1.4895285
Ruskhanidar., Alikodra, H. S., Iskandar, E., Santoso, N., Mansyoer, S. S. (2020). Analisis Populasi Kedih (Presbytis thomasi) di Cagar Alam Pinus Jantho Aceh Besar Provinsi Aceh. Journal Penelitian Hutan dan Konservasi Alam. 17(2): 207-220
Ruskhanidar., Alikodra, H. S., Iskandar, E., Santoso, N., Mansyoer, S. S. (2021). Prospects of Sustainability of Thomas langur (Presbytis Thomasi) Based on Group Size in Pinus Jantho Natural Reserve, Aceh Besar, Aceh Province. Journal of Natural Sciences Research .12(8), doi: 10.7176/JNSR/12-8-04
Slater, H. (2015). Forest structure and group density of Thomas’ langur monkey, Presbytis thomasi .Thesis. Bournemouth University
Smith, D. A. E. (2014). Preliminary Evidence For The Hired Gunds Hypothesis And Indirect Mate Devence In A Wild Group Of Maroon Langur Presbytis Rubicunda (Muller 1938) In Sabangau Tropical Peat-Swamp Forest, Central Kalimantan, Indonesian Borneo. Asian Primates journal 4(2)
Steenbeek R., Schaik C. P. (2001). Competition and group size in Thomas langur (Presbytis thomasi) The Folivor Paradox Revisited. original article. Behav Ecol Sociobiol. 49: 100-110
Steenbeek, R. 1999. Femail Choice and Male Coercion in wild Thomas’s langur. Vrouwelijke keuze en mannalijke dwang in wilde Thomas’ Langoeren. (Master’s Thesis) University Utrecht Nederlans
Surat Keputusan Menteri Kehutanan. (1984). Penetapan kawasan Cagar Alam Pinus Jantho.SK Menhut No 186/kpts-B/84.
Syaukani. (2012). Study of population and home range of Thomas Langur (Presbytis thomasi) at Soraya Research Station, Leuser Ecosystem. Jurnal Natural. 12(1):37 – 41
Yayasan Ekolsistem Lestari (YEL). (2011). Peta jalur pengamatan orang-utan reintroduksi di Cagar Alam Jantho.
Wich, S. A., Elisabeth, H. M., Sterck, S., Gursky-Doyen., Supriatna, J. (2010). Thomas Langurs: Ecology, Sexual Conflict and Social Dynamics dalam Indonesian Primates, Developments in Primatology: Progress and Prospects, (Chapter 17) Springer Science+Business Media, LLC
Zannah, R. (2017). Analisis vegetasi pohon di plot fenologi pos monitoring Sikundur Taman Nasional Gunung Leuser. Skripsi. Universitas Medan Are
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2023 Ruskhanidar, Rosmalia, Sofyan Iskandar
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
