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All Journal JURNAL PEMULIAAN TANAMAN HUTAN Jurnal Biologi Tropis Jurnal Hutan Tropika Global Forest Journal Biodiversitas Journal of Biological Diversity
Yosie Syadza Kusuma
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Materials Science & Nanotechnology

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DIFFERENTIALLY EXPRESSED GENES (DEGS) PADA Dryobalanops aromatica YANG DITUMBUHKAN PADA MEDIA GAMBUT DAN TANAH MINERAL Yosie Syadza Kusuma; Fifi Gus Dwiyanti; Deden Derajat Matra; Ulfah Juniarti Siregar; Iskandar Zulkarnaen Siregar
Jurnal Pemuliaan Tanaman Hutan Vol 15, No 2 (2021): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2021.15.2.115-128

Abstract

Dryobalanops aromatica is a highly economic value resin-producing tree and has been known as an important international trade commodity that is widely used in the perfume, cosmetic, medicine, and wood industries. In natural habitats, this species has been found to grow well on peatland and mineral soils. The information regarding adaptive genes in Indonesian native trees to abiotic stress is still very limited. The research was conducted to analyse the differentially expressed genes (DGEs) that can elucidate the role of several upregulated and down-regulated genes under peat media and mineral soil treatments. DGE analysis was carried out using R software, Bioconductor package 'edgeR'. Using the Benjamini and Hochberg approach to control FDR (FDR 0.05), with a Log2FC 2 and p-value of 0.05, showed 320 contigs were up-regulated and 439 contigs were down-regulated, while 58129 contigs were not significantly expressed. Furthermore, this study also presents an overview of the genes involved in different pathways, such as photosynthesis, carbon and energy metabolism, hormone-related genes, nitrogen metabolism, reactive oxygen species, and transcription factor. This information will be useful in understanding D. aromatica molecular responses to stress condition that may be of use for selecting genotypes in the breeding programs or peatlands restoration
Analysis of the Comfort Level of Green Open Spaces in Medan Srena, Mona Fhitri; Alfi Laila Zuhriansah; Kusuma, Yosie Syadza; Ria Astuti; Rizky Febriana Br Lubis; Rahmah, Hanifa; Sidabukke, Simon H
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
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.v25i4.9832

Abstract

Urban environmental comfort increasingly challenged by rapid population growth and development. Green Open Spaces (GOS) are crucial in enhancing community also life quality. This study assess the comfort value of GOS in Medan City by examining physical, biotic, and social factors. The research employed a combination of vegetation inventory to evaluate biodiversity, environmental measurements to assess air quality and noise levels, and public perception surveys to understand social comfort. The findings reveal that Cadika Park possesses the highest vegetation diversity with 31 tree species, dominated by Terminalia mantaly, which also recorded the highest Leaf Area Index (LAI) of 1.78. Physically, air quality within GOS areas is better than outside, although noise levels still exceed environmental quality standards. Socially, the community perceives GOS as comfortable and beneficial for daily activities. In conclusion, despite certain physical limitations, GOS in Medan City contributes positively to environmental comfort, underscoring the need for continuous management and sustainable development of urban green spaces.
Influence of Fly Ash Addition on Nutrient and Microbial Population in Citronella Leaf Waste Composting Zuhriansah, Alfi Laila; Mansur, Irdika; Budi R, Sri W.; Astuti, Ria; Lubis, Rizky Febriana Br; Rahmah, Hanifa; Shrena, Mona Fitri; Kusuma, Yosie Syadza
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
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.v25i4.9907

Abstract

The response of composting microbes to fly ash can show an increase or decrease in population depending on the type and concentration of fly ash used. This study aims to identify the effect of fly ash addition on the composting of citronella (Cymbopogon nardus (L.) Rendl.) leaf waste, specifically in relation to changes in the C/N ratio and the number of composting microbes, and the identification of fungal species that developed during the process. The composting treatments included citronella leaf waste without alkali (K), also with the addition of alkali in the form of 2% dolomite (D), fly ash of 2% (FA1), 5% (FA2), 10% (FA3) and 15% (FA4). The analysis used in this study was a quantitative descriptive analysis related to the analysis of C-organic and total N, as well as composting microbes. Quantitative descriptive analysis was employed to assess C-organic content, total nitrogen, and microbial populations. The results demonstrated that the incorporation of fly ash influenced both the C/N ratio and microbial abundance. The addition of 10% fly ash proved to be the most effective treatment, increasing nitrogen content and reducing the C/N ratio to 26, while supporting bacterial growth up to 3.0 × 10¹¹ CFU/g. Fungal identification revealed the presence of Rhizopus sp., Trichoderma sp., and Aspergillus sp., which contribute to the degradation of organic matter in citronella leaf waste.
Alternative Seedling Media Using Dicranopteris linearis and Rice Husk Charcoal for Acacia mangium Astuti, Ria; Pamoengkas, Prijanto; Srena, Mona Fhitri; Zuhriansah, Alfi Laila; Rahmah, Hanifa; Kusuma, Yosie Syadza; Br Lubis, Rizky Febriana
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
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.v25i4.9908

Abstract

Seedling quality contributes significantly to the development of industrial forest plantations. This study assessed Dicranopteris linearis (Resam) and rice husk charcoal mixtures as an alternative nursery media for Acacia mangium Willd. seedlings. The study was carried out using a Completely Randomized Design, and the data were analyzed using ANOVA. Five mixtures of resam and rice husk charcoal were tested: A (100% control), B (80%:20%), C (70%:30%), D (60%:40%), and E (50%:50%). The ratio of 70%:30% yielded the best performance, with a mean height of 12.84 cm, fresh weight of 4.63 grams, dry shoot weight of 1.53 grams, and a Seedling Quality Index (SQI) of 0.0018. These findings highlight mixed media C as the most effective composition and confirm the potential of resam and rice husk charcoal mixture as an effective and sustainable nursery media for industrial forest plantation.
Ecology of Scaphium macropodum in the Sarolangun Jambi Production Forest Area Lubis, Rizky Febriana Br; Marpaung, Sutan Sahala Muda; Srena, Mona Fhitri; Kusuma, Yosie Syadza; Batubara, Junianto S.; Siadari, Ulidesi
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
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.v24i4.7774

Abstract

The Pengulu Tribe in Limun District, Sarolangun Regency, Jambi Province, has long used the fruit of *Scaphium macropodum*—locally known as "merpayang" or "mempayang"—as a traditional medicine. *Scaphium macropodum* belongs to the Sterculiaceae family and has a broader distribution compared to its seven subspecies. This study investigates the ecology of *S. macropodum* to provide initial information on its use by the Pengulu Tribe, as well as the population and habitat conditions in Sarolangun Jambi's production forest. The study aims to estimate the population of *S. macropodum* in the forest and analyze the ecological factors influencing its habitat. Conducted between December 2023 and January 2024, the research utilized observation, interviews, and literature review methods, with data analyzed descriptively and qualitatively. Ecological factors were examined using the Importance Value Index (INP), diversity and evenness indices, community similarity index (Ward method), and Principal Component Analysis (PCA). The study identified 47 species from 18 tree families within the *S. macropodum* habitat. The dominant species in two research sites, APL NM and HA DM, were *Shorea parviflora* (meranti). At HL DT and APL DM, the dominant species were *Shorea multiflora* (squirrel coconut) and *Canarium* sp. (mosquito legs). The Shannon-Wiener diversity analysis indicated moderate diversity and evenness across the four sites. APL NM and HA DM had significant community similarity (90.81%), while APL DM had a lower diversity index compared to the other sites.
Evaluating the Growth Performance of Three Fast-Growing Species in Coal Mine Reclaimation in Aceh : Evaluasi Kinerja Pertumbuhan Tiga Spesies Pohon Cepat Tumbuh pada Lahan Reklamasi Tambang Batu Bara di Aceh Kusuma, Yosie Syadza; Riharja. TJ, Yuni Septia; Arlita, Tuti; Rosita, Ida; Wijaya, Laila
JURNAL HUTAN TROPIKA Vol 20 No 2 (2025): Volume 20 Nomor 2 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i2.24002

Abstract

Coal mining plays a crucial role in global energy production and regional development, including in Aceh, Indonesia, where operations such as PT. Mifa Bersaudara contribute to energy supply and employment. This study evaluated the revegetation success of three fast-growing species (Falcataria moluccana, Enterolobium cyclocarpum, and Gmelina arborea) in post-mining reclamation areas planted in 2017 and 2018. Planting was performed at a uniform spacing of 4 × 4 m across 27 plots (8 in 2017, 19 in 2018), each measuring 20 × 20 m and containing 25 trees per plot, with a sampling intensity of 3%. Analyzed using descriptive statistics, two-way ANOVA with Tukey HSD, t-test, and Wilcoxon rank-sum tests. Results showed F. moluccana achieved the highest height (17.53 ± 24.75 m in 2017; 10.73 ± 2.88 m in 2018) and diameter (22.25 ± 8.12 cm in 2017; 31.84 ± 11.59 cm in 2018), followed by E. cyclocarpum, while G. arborea grew more slowly. Survival rates of the planted trees remained relatively high in both planting years, with 80.0 ± 19.0% in 2017 and 70.2 ± 16.9% in 2018, and statistical analysis indicated no significant difference between the two years. Fast-growing species enhanced canopy cover, soil stabilization, and microhabitats, supporting slower-growing species, and their combination is recommended to optimize short-term revegetation success and long-term ecosystem resilience in degraded areas.
Population structure of Cotylelobium melanoxylon within vegetation community in Bona Lumban Forest, Central Tapanuli, North Sumatra, Indonesia ARIDA SUSILOWATI; HENTI HENDALASTUTI RACHMAT; DENI ELFIATI; CUT RIZLANI KHOLIBRINA; YOSIE SYADZA KUSUMA; HOTMAN SIREGAR
Biodiversitas Journal of Biological Diversity Vol. 20 No. 6 (2019)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d200625

Abstract

Abstract. Susilowati A, Rachmat HH, Elfiati D, Kholibrina CR, Kusuma YS, Siregar H. 2019. Population structure of Cotylelobium melanoxylon within vegetation community in Bona Lumban Forest, Central Tapanuli, North Sumatra, Indonesia. Biodiversitas 20: 1681-1687. In many forests stand, Cotylelobium melanoxylon is hard to find in the wild at present day because its bark has been intensively harvested for traditional alcoholic drink and sold by kilogram in traditional market in North Sumatra and Riau. This activity has put the species into serious threats of their existence in their natural habitat. We conducted study to determine the population structure of the species at seedling to tree stage in Bona Lumban Forest, Central Tapanuli. We used purposive sampling by making line transect at forest area where C. melanoxylon naturally grow. There were four transects with each transect consisted of five plots in which nested plots were established to record data at four growth stages, resulting in 80 plots in total. The result showed that the Important Value Index (IVI) for C. melanoxylon were 66.33, 17.65, 11.82, 12.90; Diversity Index (H) were 2.9, 1.90,2.88, 2.53 and 12.90, Index of evenness (E) were 0.844, 0.534, 0.85, 0.935 and the Index of Richness (R) were 5.71, 7.13, 5.37, 3.67 for the stage tree, pole, sapling, and seedlings, respectively This result demonstrates that C. melanoxylon still grows naturally in Bona Lumban at all stages from tree to seedling. However, there might be a problem in its natural regeneration as there is big difference of its high IVI at tree stage compared to IVI value for its younger stages. The regeneration status of C. melanoxylon was also classified into fair. This might be generated from the condition that the existing mature trees remaining were no longer productive and healthy due to excessive harvesting for its bark.
Conservation of tropical tree biodiversity through macropropagation by shoot cutting of raru (Cotylelobium melanoxylon), a highly utilized dipterocarp in North Sumatra, Indonesia Arida Susilowati Susilowati; Kansih Sri Hartini; Deni Elfiati; Henti Hendalastuti Rachmat; Yosie Syadza Kusuma; M. Zulham Efendi Sinaga; Tati Suhartati
Biodiversitas Journal of Biological Diversity Vol. 21 No. 2 (2020)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d210239

Abstract

Abstract. Susilowati A, Hartini KS, Elfiati D, Rachmat HH, Kusuma YS, Sinaga MZE, Suhartati T. 2020. Macropropagation by shoot cutting of raru (Cotylelobium melanoxylon), a highly utilized dipterocarp in North Sumatra, Indonesia. Biodiversitas 21: 724-730. Cotylelobium melanoxylon (Hook.f.) Pierre, or locally named raru, is one of native tree species from North Sumatra that has many uses for its wood and medicinal purposes for anti-diabetic, anti laxative and blood coagulation. C. melanoxylon has been experiencing short supply due to its limited natural distribution, forest degradation, illegal harvesting for its wood and bark and uncertain fruiting season of the species. Along with these alterations, C. melanoxylon population has been decreasing. The objective of this research was to determine the effectiveness of C. melanoxylon propagation by shoot cutting. Randomized factorial design with 2 factors was employed in this research. The first factor (factor A) was the cutting media (i.e. topsoil only; topsoil and sand with proportion of 1:1 v/v), and the second factor (factor B) was commercial auxin addition (i.e. 1g/100cuttings; without auxin). The observed parameters were survival percentage, rooted percentage, number of primary and secondary root, length of primary and secondary root and root histology. The results showed that the interaction between media and auxin addition did not have any significant effect on all tested parameters. The average survival percentage was 70-90% and rooting percentage was 50-90%. Adventitious root formation on C. melanoxylon cutting was originated from cell differentiation on wounded area near cambium, followed by root primordia formation and root meristem formation. The success of artificial propagation technique for this species will provide basic practice of C. melanoxylon cultivation and may contribute to the effort of ex situ conservation for valuable and threatened tree species.
Vegetation structure and floristic composition of tree species in the habitat of Scaphium macropodum in Gunung Leuser National Park, Sumatra, Indonesia ARIDA SUSILOWATI; DENI ELFIATI; HENTI HENDALSTUTI RACHMAT; KUSUMADEWI SRI YULITA; ADI NURUL HADI; YOSIE SYADZA KUSUMA; SRI ANJELI LUMBAN BATU
Biodiversitas Journal of Biological Diversity Vol. 21 No. 7 (2020)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d210720

Abstract

Abstract. Susilowati A, Elfiati D, Rachmat HH, Yulita KS, Hadi AN, Kusuma YS, Batu SAL. 2020. Vegetation structure and floristic composition of tree species in the habitat of Scaphium macropodum in Gunung Leuser National Park, Sumatra, Indonesia. Biodiversitas 21: 3025-3033. Scaphium macropodum (Miq.) Beumee Ex K Heyne is a member of Malvaceae tree species and globally recognized as malva nut and locally known as ‘kembang semangkok’, ‘tempayang’, ‘merpayang’ or ‘kepayang’. The nut of S. macropodum has many benefits for medicinal purposes, yet destructive extraction of this tree species has led them to extinction. Among its natural distribution in Indonesia, North Sumatra Province, Indonesia is known as its original range, but there is limited information about the existence of this species. This study aimed to determine the vegetation structure of some tree species in the habitat of S. macropodum in Sikundur, Gunung Leuser National Park, Sumatra, Indonesia. Purposive sampling technique was employed by creating line transect at some forest areas where the population of S. macropodum is known to grow naturally. Four line transects with each transect consisting of five plots with nested plots within were established to record data at four growth stages, resulting in 80 plots in total. The results showed that the Important Value Index (IVI) of S. macropodum within the floristic community at the studied area was 21.98, 13.85, 27.30, and 39.60 for tree, pole, sapling, and seedlings stages, respectively. The Shannon-Wiener Diversity Index (H) were 3.80, 3.70, 3.06 and 2.45, Index of evenness (E) are 0.94, 0.92, 0.86, 0.77 and the Index of Richness (R) are 11.76, 10.73, 6.59, 4.10 for tree, pole, sapling, and seedlings stages. This result suggests that the natural population of S. macropodum in Sikundur forest was still in good condition at all stages from tree to seedling.
Species composition, structure, and carbon stocks of coffee agroforestry systems in East Java, Indonesia Hamdi Hamdi; Moh Ardani; Lutfi Pramukyana; Dwika Nano Hariyanto; Ida Rosita; Yosie Syadza Kusuma
Global Forest Journal. Vol. 4 No. 2 (2026): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v4i2.25875

Abstract

Coffee agroforestry systems (CAF) offer an important opportunity to maintain agricultural productivity while enhancing ecosystem services by integrating shade trees and perennial crops. This study aimed to characterize vegetation composition and structure and to estimate carbon stocks in CAF in Panti District, Jember Regency, East Java. A total of 12 nested plots were established to assess vegetation composition, structure, and carbon stocks. The results showed that 17 species belonging to 13 families were identified. The highest Importance Value Index (IVI) at the seedling and sapling levels was Coffea canephora, while at the pole and tree levels, Hevea brasiliensis dominated. Species diversity (H′ = 0.60 1.77) and evenness (E = 0.50–0.81) increased from the seedling to tree stages. The regeneration structure and diameter class distribution of the stand exhibited an inverse J-shaped distribution pattern. The total carbon stock was 161.3 Mg C ha⁻¹, equivalent to 591.7 Mg CO₂e ha⁻¹. Shade-tree aboveground biomass represented the largest carbon pool (93.9 Mg C ha⁻¹; 58.2%), followed by soil organic carbon (36.2 Mg C ha⁻¹; 22.4%), while coffee shrubs accounted for only 8.2 Mg C ha⁻¹ (5.1%). These findings demonstrate that carbon accumulation in this CAF is predominantly biomass-driven rather than soil-driven.
Co-Authors ADI NURUL HADI ARIDA SUSILOWATI ARIDA SUSILOWATI Arida Susilowati Susilowati Br Lubis, Rizky Febriana Budi R, Sri W. CUT RIZLANI KHOLIBRINA Deden Derajat Matra Deni Elfiati Deni Elfiati DENI ELFIATI Durrah Hayati Dwika Nano Hariyanto Erdiansyah Rahmi Fifi Gus Dwiyanti Hamdi Hamdi Hanifa Rahmah HENTI HENDALASTUTI RACHMAT Henti Hendalastuti Rachmat HENTI HENDALSTUTI RACHMAT HOTMAN SIREGAR Ida Rosita Ida Rosita Intan Padang Irdika Mansur ISKANDAR ZULKARNAEN SIREGAR Junianto S. Batubara Kansih Sri Hartini KUSUMADEWI SRI YULITA Lubis, Rizky Febriana Br Lutfi Pramukyana M. Zulham Efendi Sinaga Moh Ardani Mona Fhitri Srena Prijanto Pamoengkas Ria Astuti Riharja. TJ, Yuni Septia Rizky Febriana Br Lubis Ryan Moulana Siadari, Ulidesi Sidabukke, Simon H SRI ANJELI LUMBAN BATU Sutan Sahala Muda Marpaung Tati Suhartati Tuti Arlita Ulfa Hansri Ar Rasyid Ulfah Juniarti Siregar Wijaya, Laila Zuhriansah, Alfi Laila