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Kota mataram,
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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 2,520 Documents
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Community Perception and Preference Towards the Rumbio Customary Forbidden Forest, Kampar Regency, Riau Province Reza, Haris Aulia; Bahruni, Bahruni; Ichwandi, Iin
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.v25i3.9526

Abstract

The Rumbio customary forbidden forest is one of forests where local wisdom is applied by its indigenous people. This forbidden forest has high biodiversity, and the community greatly respects customary regulations. However, while some people strive to protect the environment, others neglect the forest, leading to a reduction in land that was once vast. This research aims to determine community perception and preference towards Rumbio Customary Forbidden Forest, Kampar Regency, Riau Province. This study employs interview methods, questionnaires, and document studies. The sample selection follows a proportional random sampling method, with qualitative and quantitative descriptive analysis techniques using a Likert Scale approach. The research results indicate that the community's perception of Rumbio customary forbidden forest reflects a complex relationship between ecological, social, and economic values. Strengthening community awareness of sustainable management and reinforcing the role of customary institutions in forest conservation is crucial.
Physical Stability Evaluation of Topical Formulation Containing Turmeric (Curcuma longa L.) Leaf Extract as a Potential Natural Repellent Ulya, Tuhfatul; Ratnasari, Titin; Purmafitriah, En; Sasvania, Anisa
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.v25i3.9341

Abstract

Turmeric (Curcuma longa L.) leaves, rich in bioactive compounds like tannins, terpenoids, and essential oils, have potential as a mosquito repellent for preventing vector-borne diseases such as dengue, filariasis, and malaria. This study aimed to evaluate the physical stability of repellent lotion formulations containing ethanol extract of turmeric leaves. The research was experimental in nature. Two formulations were prepared using extract concentrations of 10% (F1) and 20% (F2). The turmeric leaves were extracted using the maceration method with 96% ethanol, yielding 4.069%. The physical stability of the repellent lotion was tested using the freeze-thaw method over 12 days, evaluating organoleptic properties, homogeneity, pH, adhesion, and spreadability. Organoleptic testing showed color differences between the formulas. After stability testing, the consistency of the lotions became slightly thinner. Both formulations exhibited good homogeneity. The pH values were within the safe range for skin application. Changes in adhesion and spreadability were influenced by the testing process. In conclusion, the repellent lotion formulations containing turmeric leaf ethanol extract demonstrated good physical stability and met required quality standards.
Distribution and Characteristics of Water Source in the Prospective Campus Area of UIN Sunan Kalijaga, Pajangan, Bantul Nurlita, Agessty Ika; Ratnasari, Satiti; Rahayu, Shilfiana; Aisah, Siti
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.v25i3.9345

Abstract

Water is a fundamental need for human and ecological sustainability. However, rapid land conversion and insufficient conservation efforts pose serious threats to water availability, particularly in karst-dominated areas like Guwosari, Pajangan, and Bantul, where UIN Sunan Kalijaga plans to construct a new campus. This study aims to map and assess the area's distribution and quality of water sources to ensure sustainable use for future campus development. Six water source stations were identified and analyzed for physical (TDS), chemical (pH), and microbiological (E. coli and total coliform) parameters. The findings show that all stations had acceptable TDS and pH levels for domestic use. Yet, none met the microbiological standards for hygiene and sanitation, as total coliform and E. coli levels exceeded permissible limits. Vegetation analysis revealed the presence of key water-retaining species, such as coconut, bamboo, teak, mahogany, and Ficus septica, which play crucial ecological roles in groundwater conservation. The study highlights the importance of water quality monitoring and vegetation management in campus infrastructure planning. Effective water treatment strategies are recommended to improve microbial quality before human consumption or domestic application.
The Role and Regulation of Natural Killer (NK) Cells in Chemotherapy: A Literature Review Pauzan, Pauzan
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.v25i3.9465

Abstract

Natural Killer (NK) cells, as innate immune effectors capable of targeting tumor cells without prior sensitization, interact complexly with chemotherapy, which can both enhance and suppress their functions. This literature review aims to comprehensively evaluate the role and regulation of NK cells in the context of chemotherapy over the past decade. Literature searches were conducted through Google Scholar, PubMed, Scopus, and Web of Science databases using relevant keywords. The review findings indicate that several chemotherapeutic agents can enhance NK cell activity by increasing the expression of activating ligands on tumor cells and promoting the release of pro-inflammatory cytokines. However, chemotherapy may also suppress NK cell function through systemic immunosuppression and alterations in the tumor microenvironment. NK cell-based immunotherapy, especially when combined with chemotherapy, demonstrates promising therapeutic potential. Recent studies support the development of strategies such as genetic modification, exogenous cytokine administration, and NK cell engineering to improve therapeutic efficacy. This review underscores the importance of further research to optimize the synergy between NK cells and chemotherapy in cancer treatment.
Literature Review: The Chemical Composition and Pharmacological Activities of Nannochloropsis sp Ulfiyah, Ryhadatul; Hijriadina, Zerati; Oktari, Baiq Khaeratinnisa; Anjanisa, Diah Hikmatin; Magvirahandini, Reivirly Khairadaty; Mutthoimah, Ulfatul; Listyacahyani, Anggit
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.v25i3.8593

Abstract

The microalga Nannochloropsis sp. is a potential bioactive source with various applications in the pharmaceutical and health industries. This study aims to identify its chemical composition and evaluate its pharmacological activities, including antioxidant, antidiabetic, antibacterial, antihyperlipidemic, and cytotoxic properties. The method involves a literature review of relevant and recent scientific articles using specific keywords. The results indicate that Nannochloropsis sp. is rich in bioactive compounds, such as unsaturated fatty acids, flavonoids, and phenolics, which contribute to its biological activities. This microalga has been shown to effectively inhibit pathogenic bacterial growth, reduce blood sugar, cholesterol, and lipid levels, and possess potential anticancer activity. The study concludes that Nannochloropsis sp. has promising prospects as a natural raw material source for modern drug development. Further research is recommended to explore the mechanisms of its bioactive compounds and to develop formulations for products based on this microalga.
Community Structure of Crustacean in Seagrass Ecosystem of Kecinan Beach, Pemenang, North Lombok I Putu Bayu Putra Kastawan; Ghazali, Mursal; Candri, Dining Aidil; Setyaningrum, Tri Wahyu; Artiningrum, Novita Tri
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.v25i3.9061

Abstract

The presence of Crustacea plays an important role in the processes occurring within seagrass bed areas. One of the coastal waters that contains seagrass beds is Kecinan Beach. This beach is also frequently used by the local community for madak activities, and the high frequency of such activities poses a threat to the seagrass ecosystem and the diversity of Crustacea. Due to the lack of available data on Crustacea in the Kecinan Beach area, this study is necessary to understand the community structure of Crustacea in the seagrass ecosystem of Kecinan Beach, Pemenang District, North Lombok. Data were collected using the line transect method, with each transect measuring 50 meters in length. Along each transect, 1×1 m² quadrat plots were placed. The Crustacea community structure found in the seagrass ecosystem of Kecinan Beach, Pemenang District, North Lombok, consisted of 14 families and 31 species, with a total of 155 individuals. The diversity index at stations I, II, and III was classified as moderate. The evenness index at stations I and II was high, while the evenness index at station III was moderate. The dominance and abundance indices indicated that each station had low species dominance and low abundance.
Efficacy of Beauveria bassiana as a Biological Control Agent Against the Brown Planthopper Nilaparvata lugens in Rice Cultivation Sepe, Muslimin; Rosa, Helda Orbani; Suhardi, Suhardi
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.v25i3.9094

Abstract

The brown planthopper (Nilaparvata lugens) is a major pest in rice cultivation. Its population can be effectively managed through biological control using the entomopathogenic fungus Beauveria bassiana. This study aimed to evaluate the effectiveness of the entomopathogenic fungus B. bassiana in controlling N. lugens under greenhouse conditions. Applications of B. bassiana at various concentrations revealed that 10⁸ conidia/mL treatment was the most effective, achieving up to 90% mortality within 7 days post-application. This treatment also recorded the lowest LT₅₀ value of 6.736 days and the highest regression value of 0.52, indicating a rapid and effective reduction in pest population. The mortality rate exhibited an increasing trend up to day five, followed by a decline as target population diminished, with cumulative mortality reaching 90% by day seven. These findings demonstrate that a concentration of 10⁸ conidia/mL is the most optimal for biological control of N. lugens using B. bassiana, both in terms of mortality rate and speed of action. The results support the potential of B. bassiana as a promising biological control agent in sustainable pest management strategies for agricultural systems.
Effect of Potassium Fertilizer Dose and Frequency of PSB Application on the Productivity of Melon Rahmawati, Irene; Sulistyono, Agus; Santoso, Juli
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.v25i3.9106

Abstract

nThis1studyiaimsoto increase melon fruit yield by determiningpthe effectoof theoright doseoof potassium fertilizer,nthe effect ofithe frequency of Photosynthetic Bacteria (PSB) administration and thepeffect ofpthepinteraction betweenpthe doseiof potassiumifertilizer and the frequency of PSB administration on melon fruit productivity. The studyiused a FactorialrRandomizedrBlock Designr(RAK) withrtwo main factors.pThe firstpfactor isithe doseiof potassium fertilizero(K0: without, K:9g/plant, K2:10g/plant, K3:11g/plant).pThe second factoriis theffrequency ofiPSB administration (F0: without, F1:1x a week, F2:2x a week, F3:3x a week). Each factor consists of 4 levels. The parameters observed include fruit weight per plant, fruitidiameter, fruittflesh thicknessaandisweetness level.iData will be analyzed using ANOVA. Theiresults oftthe studyiconcluded thatithe single factoriof potassium fertilizer and PSB doses significantly affected the fruit diameter and fruit flesh thickness. The interaction of potassium fertilizer and PSB administration significantly affected the fruitpweight per-plant andithe level of-sweetness. Thisistudy provides information for melon farmers to manage fertilization and PSB applications efficiently, so as to increase productivity.
Supporting Habitat Contribution to Reef Fish Diversity in Sekotong Bay, West Lombok, Indonesia Fitrianti, Vita
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.v25i3.9137

Abstract

Habitat complexity plays a crucial role in shaping the diversity and structure of coral reef fish communities by offering a range of ecological niches for feeding, reproduction, and shelter. This study investigates how different levels of habitat complexity, particularly the presence of supporting habitats such as seagrass beds and mangroves, influence the richness and diversity of coral reef fish communities in Sekotong Bay, Lombok, Indonesia. Data were collected at four stations using the Underwater Visual Census (UVC) method, with observations focusing on habitat parameters, substrate complexity, and anthropogenic activity. Results showed that stations with buffer habitats —mangroves at Station III and seagrass beds at Station IV— exhibited significantly higher species richness and diversity indices compared to other stations. Seagrass beds, in particular, were associated with the highest diversity (H' = 2.95; 42 species), suggesting their key role in maintaining fish community structure. Although Station IV experienced human activity, it still supported a complete community structure, including target fish species, highlighting the ecological buffering capacity of adjacent seagrass habitats. These habitats not only function as nursery grounds and sediment filters but also sustain the ecological balance and resilience of coral reef ecosystems. The study also found that river mouths may negatively affect benthic substrate diversity due to sedimentation unless mitigated by buffer vegetation. Overall, findings underscore the importance of preserving habitat complexity and integrating seagrass and mangrove protection into coastal management strategies to enhance biodiversity, ecosystem stability, and local socio-economic resilience.
Vegetation Structure of Tree Types on Oil Palm Plasma Plantation Forest Land in Sari Tani Village, Wonosari District, Boalemo Regency Ahmad, Nur Rahmin; Baderan, Dewi Wahyuni K.; Hamidun, Marini Susanti; Febriyanti, Febriyanti; Husain, Ilyas H.
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.v25i3.9202

Abstract

Some of the dangers of opening oil palm plantations for the environment are that many forests are cut down because they are used as oil palm plantations. The research was conducted in Sari Tani Village, Wonosari District, Boalemo Regency, Gorontalo Province. The research was conducted in December 2024. This study aims to analyze the vegetation structure in the oil palm plasma plantation forest land of Sari Tani Village. The type of research used is quantitative descriptive. This study uses the line transect method consisting of three stations. Plots measuring 20x20 m are used for tree-level vegetation analysis with a distance between plots of 20 m. The data analysis technique uses the Important Value Index (INP) formula. So that 9 types of plants were found in the oil palm plasma plantation forest land of Sari Tani Village. The highest Important Value Index (INP) in station I was Aren (Arenga pinnata) at 75.48%; in station II, Matoa (Pometia pinnata) at 65.86%; and in station III, namely Benying (Ficus fistulosa) at 76.79%.

Page 199 of 252 | Total Record : 2520

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