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Journal : Jurnal Biologi Tropis

Vegetation Analysis in the Freshwater Swamp Ecosystem of Tangkas Lake, Muaro Jambi Rahmilija, Femei; Nursanti, Nursanti; Adriadi, Ade; Sari, Novita; Anggraini, Riana
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.8751

Abstract

Tangkas Lake, a freshwater swamp in Muaro Jambi and Batanghari, is dominated by Homalium sp., but its overall plant diversity remains undocumented. This study inventories plant species as a baseline for conservation. Plant sampling was conducted using transect and plot methods in two locations, Pulau Tepus and Rawa Liontin, over two months. A total of 37 species from 21 families were recorded, with higher diversity in Pulau Tepus (31 species, dominated by Myrtaceae, Elaeocarpaceae, and Euphorbiaceae) compared to Rawa Liontin (6 species, dominated by Homalium sp.). Species diversity indices were moderate in Pulau Tepus but lower in Rawa Liontin. Species richness was highest in Pulau Tepus for tree (4.6) and seedling (4.5) stages, while pole-stage richness was 3.7. Rawa Liontin had low species richness across all stages, with low evenness in both sites. Environmental factors varied, with Pulau Tepus experiencing wider temperature fluctuations (23–30°C), lower light intensity, and sandy loam soils, while Rawa Liontin had a narrower temperature range (25.5–27.3°C), higher light intensity, and similar soil texture. Soil pH ranged from 4.29 to 6.21. These findings highlight the need for conservation, particularly in Rawa Liontin. Further research is needed to support habitat restoration and long-term monitoring.
Carbon Storage Estimation in the Sungai Buluh Peat Forest Reserve, Mandahara Ulu District, Tanjung Jabung Timur Regency Dinanty, Fawwaz; Nursanti, Nursanti; Nahlunnisa, Hafizah; Nazri Yandi, Wahyu
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.v25i3.8982

Abstract

Indonesia has the third-largest tropical forest area in the world, making it a key player in global climate change mitigation efforts. This study aims to identify tree species and estimate above-ground carbon (AGC) stocks in the Sungai Buluh Peat Protected Forest, Jambi. The research employed a descriptive quantitative approach using permanent plot methods and allometric equations across 30 plots measuring 20×20 meters. Data collected included tree species, diameter, and height, which were then analyzed to calculate biomass and carbon stocks. The results identified 1,140 individuals from 26 species, with Mangifera parvifolia, Dyospyros siamang, and Madhuca modleyana being the most dominant. The stand volume reached 426.11 m³/ha, while the estimated AGC was 173.96 tons/ha. The majority of the carbon stock was contributed by the tree strata, accounting for more than 73%. These findings highlight the importance of conserving peatland forests as long-term carbon reservoirs.