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All Journal Jurnal Biologi Tropis ENVIBILITY: Journal of Environmental and Sustainability Studies
Julia Rizki Jumas
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology

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Exploration and Reintroduction of Orchid on the West Slope of Mount Lawu: Conservation Studies PT Pertamina Aviation Fuel Terminal Adi Sumarmo Soraya, Nova Dewi; Bagas Cesar Bastomi; Julia Rizki Jumas; Zaenal Abidin; Harya Ramadanu
ENVIBILITY: Journal of Environmental and Sustainability Studies Vol. 2 No. 1 (2024): March
Publisher : Prospect Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55381/envibility.v2i1.348

Abstract

This study aimed to inventory the taxonomic diversity of Orchidaceae on the western slopes of Mount Lawu, a conservation area managed by PT Pertamina Aviation Fuel Terminal Adi Sumarmo. Through exploratory methods, 51 orchid taxa were identified with a total of 230 individuals. The Eria, Dendrobium, and Liparis genera dominated the species composition, with their distribution influenced by microhabitat characteristics. The significant presence of epiphytic species suggests a healthy forest canopy. Vegetative propagation efforts through tissue culture were successfully conducted on five selected species: Eria sp, Liparis sp, Dendrobium sp, Malaxidinae sp, and Vanda tricolor, with Dendrobium sp demonstrating the highest potential for vegetative propagation (26%). These findings open avenues for reintroduction programs of rare species into their natural habitats. A conservation status assessment revealed that most species are not yet listed in the IUCN Red List, emphasizing the urgent need for further research and more intensive conservation efforts. Therefore, this study recommends the implementation of integrated in-situ and ex-situ conservation strategies to ensure the sustainability of orchid diversity within the Mount Lawu conservation area.
Arthropoda Diversity in High-Value Conservation Areas of Rokan Hulu's Palm Oil Ecosystems Dewastra Bayu Wicaksana, Satya; Ardyan Pramudya Kurniawan; Prautama, Cahaya; Julia Rizki Jumas; Hutabarat, Frengky; Tambunan, Ardian Syahputra
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
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.v25i1.8519

Abstract

The transformation of tropical forests into oil palm plantations in Indonesia has significantly impacted biodiversity, including arthropod species, which serve as indicators of ecosystem health. This study investigates the diversity of arthropods in High Conservation Value (HCV) areas within the oil palm ecosystem of Rokan Hulu, Riau Province. The research was conducted in three HCV areas—Sialang Forest, Makam Keramat Forest, and Pendalian River—using the Visual Encounter Survey (VES) method. Observations were made in July–August 2024, documenting species diversity and environmental parameters. A total of 187 arthropod individuals from 38 species and 12 families were identified, with Libellulidae (dragonflies) and Nymphalidae (butterflies) as the most dominant families. Diversity and evenness indices were calculated using the Shannon-Wiener and Evenness formulas, yielding values of 3.05 (high diversity) and 0.558 (moderate evenness), respectively. Environmental parameters, such as light intensity4802,00±6204,84 Lux; wind speed 0,33±0,52 m/s; humidity 72,53±16,02%; temperature 31,63±4,20°C; and soil pH 6,42±0,38 were measured, supporting arthropod distribution.
Co-Authors Bagas Cesar Bastomi Dewastra Bayu Wicaksana, Satya Harya Ramadanu Hutabarat, Frengky Kurniawan, Ardyan Pramudya Prautama, Cahaya Soraya, Nova Dewi Tambunan, Ardian Syahputra Zaenal Abidin