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INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,949 Documents
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Morphological Growht of Oil Palm on Biomass-Amended Post-Coal-Mining Land Romadhon Nur Rohim; Sutan Tarmizi Lubis; Agung Lesmana; Arjuna Manurung; Muhammad Aqwan A. U; Said Asyrof Auvvarof
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): 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.v26i3.12130

Abstract

Post-coal mining land generally has low soil fertility due to the degradation of physical, chemical, and biological soil properties, which limits the growth of oil palm (Elaeis guineensis Jacq.). This study aimed to evaluate the effectiveness of oil palm biomass-based ameliorants on the morphological growth of immature oil palm planted on post-mining land using mineral soil as a comparison. The study was conducted at PT Pola Kahuripan Inti Sawit, Tanah Laut Regency, South Kalimantan, from November 2025 to January 2026 using a quantitative-comparative survey method. The treatments consisted of P1 (150 kg plant⁻¹ empty fruit bunches on mineral soil), and P2 (150 kg plant⁻¹ empty fruit bunches + 30 kg plant⁻¹ boiler ash) on post-mining land. Observed parameters included plant height, stem diameter, frond number, male flowers, female flowers, and abortive flowers at 12–14 months after planting. Data were analyzed using an independent sample t-test at a 5% significance level. The results showed that P2 increased vegetative growth in post-mining land, with a plant height of 226.62 cm, a stem diameter of 19.12 cm, and 29.82 fronds at 14 months after planting, approaching growth on mineral soil. The combination of empty fruit bunches and boiler ash has the potential to be an effective remedial material for sustainable rehabilitation of post-coal mining land.
The Effect of Growing Media Variations on Fruiting Body Number and Ash Content of Oyster Mushroom (Pleurotus ostreatus) Rakhmawati, Reni; Sulistyoningsih, Mei; Susatyo, Ary; Amelia, Steffy
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.12135

Abstract

Oyster mushroom (Pleurotus ostreatus) cultivation relies heavily on sawdust as the primary growing medium, while its availability is becoming increasingly limited, creating a need for alternative substrates derived from recycled materials. This study aimed to evaluate the effects of recycled-material-based growing media om the number of fruiting bodies and the ash content of oyster mushrooms. A quantitative experimental method was employed using a completely randomized design consisting of four treatments and four replications, resulting in 16 experimental units. The treatments were sawdust as the control (A0), used cardboard (A1), marga waste (A2), and a mixture of 50% used cardboard and 50% marga waste (A3). The observed parameters were the number of fruiting bodies and ash content. Data were analyzed using normality and homogeneity tests, followed by One-Way ANOVA and Duncan’s multiple range test at a 5% significance level. The results indicated that the growing media affected fruiting body production, with marga waste (A2) yielding the highest average number of fruiting bodies among all treatments. This effect was statistically significant (p = 0.027). In contrast, ash content showed relatively similar values across treatments and was not significantly affected by the type of growing medium (p = 0.226). In conclusion, marga waste demonstrated the greatest potential for increasing oyster mushroom productivity through enhanced fruiting body formation, while maintaining comparable ash content. These findings highlight the potential of marga waste as a sustainable and cost-effective alternative substrate for supporting environmentally friendly and economically viable oyster mushroom cultivation.
Vegetation Analysis of Tree Species in the Hungayono Karst Ecosystem Ishak, Rafli; Katili, Abubakar Sidik; Husain, Ilyas H.; Mamu, Hartono D.; Kandowangko, Novri Youla
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.12150

Abstract

Karst ecosystems possess distinctive edaphic and hydrological characteristics that influence vegetation structure, yet information regarding tree vegetation in the Hungayono karst area remains limited. This study aimed to analyze species composition, vegetation structure, and community patterns of tree vegetation in the Hungayono Karst Ecosystem, Tulabolo Pinogu Resort, Bogani Nani Wartabone National Park. A survey method with purposive sampling was applied at three karst topographic zones representing the lower, middle, and upper areas. Five 20 × 20 m plots were established at each zone, resulting in 15 observation plots. Vegetation data were analyzed using density, frequency, dominance, Important Value Index (IVI), and Principal Component Analysis (PCA). The results recorded 12 species with a total of 61 individuals belonging to the divisions Tracheophyta and Pinophyta. The lower karst zone exhibited the highest species richness and abundance, whereas the upper zone showed a simple and nearly monodominant community structure. Bambusa multiplex dominated Point I with an IVI of 76.38%, Neolamarckia macrophylla dominated Point II with an IVI of 179.5%, and Neolamarckia cadamba dominated Point III with an IVI of 300%. PCA analysis indicated heterogeneous vegetation communities influenced by topography, soil thickness, and microclimatic conditions. These findings highlight the ecological role of karst topographic gradients in shaping tree vegetation structure and provide scientific information for karst habitat management and conservation.
Indigenous Microorganisms for Biodegradation of Household Detergents in Aquatic Bioremediation: A Meta-Scientific Review Ashhabul Kahfi Khaer; Putri Nabila Tsabitah Arman; Asri Malisan; Nurul Hikma Ardianto; Ramlawati Ramlawati; Sahrani U
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): 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.v26i3.12151

Abstract

Household wastewater containing detergent residues is a major source of aquatic pollution due to synthetic surfactants, particularly Linear Alkylbenzene Sulfonate (LAS) and Alkyl Sulfate (AS), which are toxic and resistant to natural degradation. Bioremediation using indigenous microorganisms offers an environmentally friendly and cost-effective alternative for degrading these pollutants. This narrative review evaluated the potential of indigenous microorganisms for biodegradation of household detergent residues and their prospects for aquatic bioremediation. Literature was systematically collected from Google Scholar, PubMed, and Scopus, including primary research articles published in Indonesian or English between 2018 and 2025. Twenty eligible studies were analyzed. The findings showed that Pseudomonas, Bacillus, Acinetobacter, Aeromonas, and Corynebacterium were the most frequently reported indigenous bacteria capable of degrading detergent surfactants and related organic compounds, with degradation efficiencies ranging from 7.7% to 100%, depending on microbial characteristics, substrate type, and environmental conditions. Bacterial consortia and biofilm-based systems consistently achieved higher degradation efficiencies than single isolates. Biodegradation primarily involves extracellular enzymes, including monooxygenases, sulfo-transferases, and amidases, which convert surfactants into less harmful compounds. Despite most studies being limited to laboratory-scale experiments, indigenous microorganisms demonstrate strong potential as sustainable bioremediation agents. Future research should focus on consortium optimization, molecular characterization, and field-scale validation to improve practical implementation in aquatic environments.
Analysis of Wildlife Diversity, Abundance, and Distribution in the Sekaroh Forest to Support Ecotourism Potential Yamin, M.; Khairuddin, Khairuddin; Mertha, I Wayan
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.12156

Abstract

The Sekaroh Forest Area in Jerowaru District, East Lombok Regency, possesses significant biodiversity potential that supports sustainable ecotourism and serves as an ecological buffer zone in the southeastern coastal region of Lombok Island. This study aimed to analyze the diversity, abundance, and distribution of fauna as a basis for environmental management and ecotourism development. The study was conducted across three habitat types, namely grassland, savanna, and plantation forest. The observed fauna included arthropods, reptiles, birds, and mammals, which were documented through surveys and field observations. The data were analyzed using diversity, abundance, dominance, distribution pattern, and inter-habitat similarity indices. The results revealed that the Sekaroh Forest Area exhibits relatively high faunal diversity, with distinct community characteristics in each habitat type. Savanna and plantation forest habitats had higher abundances of birds and arthropods than grassland habitats, whereas certain reptiles and mammals were found only in specific habitats. These findings indicate that the Sekaroh Forest Area has high ecological value and considerable ecotourism potential; therefore, it should be managed sustainably, with careful consideration of environmental conservation.
MA11 Dose Effects on Liquid Organic Fertilizer from Cattle and Goat Urine Andrey Febri Pramana; Engkus Ainul Yakin
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): 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.v26i3.12160

Abstract

This study investigated the effect of different doses of MA11 microorganisms on the quality of liquid organic fertilizer (LOF) produced from a mixture of cow and goat urine based on nitrogen (N), phosphorus (P), potassium (K), and pH. A Completely Randomized Design (CRD) was employed with three treatments: P0 (100 mL MA11), P1 (200 mL MA11), and P2 (300 mL MA11), each with four replications. Data were analyzed using one-way analysis of variance (ANOVA), followed by Duncan’s multiple range test at the 5% significance level. The results showed that MA11 dosage significantly affected (P < 0.05) the N, P, K, and pH of the LOF. Increasing the MA11 dose increased nutrient concentrations, with nitrogen rising from 0.033% to 0.063%, phosphorus from 0.055% to 0.107%, and potassium from 0.032% to 0.077%, while pH decreased from 4.32 to 4.03. Treatment P2 (300 mL MA11) produced the highest N, P, and K contents and the lowest pH. The pH value met the Indonesian quality standard for liquid organic fertilizer (4–9). These findings indicate that the application of 300 mL MA11 improved the nutrient characteristics of liquid organic fertilizer derived from cow and goat urine under the conditions of this study.
Carbon Absorption Potential in the Hungayono Karst Ecosystem, Tulabolo Pinogu Resort, Bogani Nani Wartabone National Park Timbola, Muh Kirad; Katili, Abubakar Sidik; Husain, Ilyas H.; Kandowangko, Novri Youla; Mamu, Hartono D.
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.12170

Abstract

Climate change caused by increasing carbon dioxide (CO₂) emissions has become a global issue affecting environmental balance and rising global temperatures. Tropical forest ecosystems, including the Hungayono karst area in Bogani Nani Wartabone National Park, play an important role as carbon sinks through vegetation biomass. This study aims to analyze vegetation density, biomass, carbon content, and carbon sequestration potential in the Hungayono karst ecosystem. The research was conducted using a quantitative descriptive method with purposive sampling techniques at three observation points through the transect quadrat method. Vegetation data were analyzed using allometric equations and IPCC conversion factors. The results showed a tree density of 290 individuals/ha and sapling density of 335 individuals/ha. Total biomass reached 677.79 tons/ha, carbon content was 420.06 tons/ha, and carbon sequestration potential was 1541.63 tons CO₂e/ha. These findings indicate that tree-level vegetation plays a dominant role in carbon storage and climate change mitigation.
Effect of Residual Blotong (Sugarcane Filter Cake) as Organic Matter on EarlyGrowth of Sugarcane (Saccharum officinarum L.) in Sandy Media Angga Ardiansyah; Anna Kusumawati; Sutan Borohim Siregar
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): 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.v26i3.12171

Abstract

Sandy soil is dominated by macropores, which causes low water-holding capacity and leads to rapid evaporation before plants can absorb the water. Since water availability is a key factor in plant growth and development, especially in supporting the photosynthesis process, improving soil water retention becomes essential. Applying organic matter has been shown to enhance soil physical properties, increase nutrient availability, and improve water retention within the root zone. This study was carried out to examine the effect of organic matter application on the early growth of sugarcane (Saccharum officinarum L.), as well as on soil pH, temperature, and moisture. Conducted from February 14 to June 6, 2023, at the Practice Field of Politeknik LPP Yogyakarta, the research employed a non-factorial Randomized Block Design (RBD) with two treatments, namely soil media with organic matter and soil media without organic matter, each consisting of 30 sugarcane plants of the Bululawang variety established through the bud set method. Parameters observed included plant height, stem diameter, leaf number, soil pH, temperature, and moisture, with data analyzed using a t-test and correlation analysis. Findings revealed that organic matter application significantly increased both plant height and stem diameter relative to the control. Plants grown in organic matter treated soil achieved an average height of 57.11 cm and stem diameter of 0.55 cm, compared to 31.95 cm and 0.45 cm in the control group. Leaf number was likewise greater in the organic matter treatment (4.00 leaves) than in the control (3.09 leaves), though this difference was not statistically significant. Correlation analysis further showed that soil temperature was positively associated with plant growth, whereas soil moisture had a negative correlation with plant height. Taken together, these results indicate that organic matter application improved overall soil conditions and promoted better early vegetative growth in sugarcane.
Description of The Results of Examination of Fasting Blood Sugar and Total Cholesterol of The Elderly Using a Photometer at The Gamping II Health Center Year 2025 Azzahro, Hasnah Hafishah; Anwar, Chairil; Aryani, Titin
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): 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.v26i2.12177

Abstract

Older adults are vulnerable to metabolic disorders due to physiological aging processes that may increase the risk of diabetes mellitus and cardiovascular disease. This study aimed to describe fasting blood glucose and total cholesterol levels among elderly patients at the Gamping II Community Health Center using photometric examination methods. This quantitative descriptive study employed a cross-sectional design involving 103 elderly participants selected through total sampling. Fasting blood glucose and total cholesterol levels were measured using standard enzymatic methods with a photometer. The results showed that most respondents had fasting blood glucose levels in the prediabetes category, while total cholesterol levels were generally within the normal to borderline range. The majority of participants were women and aged 60–69 years. These findings indicate a tendency toward metabolic abnormalities among the elderly and highlight the importance of routine metabolic screening for early detection, prevention, and monitoring of age-related metabolic diseases.
The Use of Medicinal Plants Among the Community of Blangjerango, Gayo Lues Regency Putri Pahiza Br. Panjaitan; Rizky Ahadi; Nurdin Amin; Eriawati Eriawati; Lina Rahmawati
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): 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.v26i3.12178

Abstract

Traditional knowledge regarding medicinal plants in Blangjerango District, Gayo Lues Regency, is increasingly threatened by modernization and the growing preference for modern medicine among younger generations. This study aimed to identify medicinal plant species used by the community, document the plant parts utilized, preparation methods, and their medicinal benefits. The study utilized a qualitative descriptive framework combined with an ethnobotanical perspective. Information was gathered via on-site observations, thorough interviews, record keeping, and Participatory Rural Appraisal (PRA) that engaged local residents, traditional healthcare practitioners, and senior community members. The research identified 13 species of medicinal plants belonging to different families that are employed to address health issues like fever, coughing, wounds, high blood pressure, digestive problems, and skin ailments. The leaves emerged as the most commonly used part of the plants, while methods of preparation involved boiling, grinding, incinerating, and applying directly. The findings indicate that medicinal plants remain an important component of traditional healthcare practices in Blangjerango; however, knowledge of their use is predominantly retained by older generations, with declining interest among younger people. Therefore, documentation and preservation of ethnobotanical knowledge are essential to support biodiversity conservation and safeguard local cultural heritage. Collaboration between educational institutions and local governments is recommended to promote the transmission of traditional medicinal plant knowledge to younger generations.

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