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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
 158   159   160   161   162 
Tree Shading Effect on Diversity and Competitions of Understorey Cover in IPB Campus Dramaga Rahmawati, Ilma; Bramasta, Dwika; Ramadhanty, Pramesty Wulan; Susanto, Slamet Arif
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
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.v24i2b.8107

Abstract

Knowledge of competition at the plant community level is useful as a basis for studying competition aspects in a broader scope. One of the simplest things is understory competition due to differences in tree canopy cover. The purpose of this study was to describe the role of shade trees on competition and understory community structure. A total of 6 plots measuring 1 m × 1 m were made under stands of Ficus calosa, Ficus benjamina, and Terminalia catappa trees (Location 1 and Location 2), while 3 other plots of the same size were made under stands of Hevea brasiliensis trees (Location 3). Structure, composition and diversity were studied using vegetation analysis techniques. The results showed that Locations 1 and 2 were dominated by Phytolacca americana and Asystasia gangetica, while Location 3 was dominated by Axonopus compressus and Asystasia gangetica. Further analysis showed outlier data from the three locations indicated an abundant number of individuals of Phytolacca americana and Asystasia gangetica, and Axonopus compressus. All of these dominant species are invasive. Regression analysis shows that the projection of increasing canopy cover causes an increase in the density of certain species, but not significantly (P >0.05). The higher the dominance index, the smaller the species diversity value. Therefore, it can be concluded that a dominant species is usually competitive and can change the distribution structure and diversity of understory plants under different tree canopies.
Gastropoda Diversity in the Coastal Area of Kapas Island, Tolitoli, Central Sulawesi Sari, Retno; Fitrallisan, Fitrallisan; Hardini, Erza Shafiah Zahraani Pravita; Lemako, Gideon Sulivan; Patigu, Rosy Feraningsih
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
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.v24i2b.8109

Abstract

Kapas Island is one of the coastal tourist destinations that has a panorama of white sand with various types of plants and marine animals. Types of marine animals that are also found in coastal areas are gastropods. One measure of the biological system's sustainability is species diversity. The purpose of this study is to examine the gastropod diversity in the coastal region of Kapas Island, Tolitoli, Central Sulawesi. According to the findings of environmental parameter tests, temperatures with different substrates ranged from 29.3 °C to 32.6 °C, salinity from 33 to 38 ppt, and pH from 7.88 to 8.07. The types of Gastropods found in the study amounted to 34 species, from 26 Genus, 17 Families with 6 Orders and 2 subclasses. The Diversity Index Analysis's (H') total value for the Medium diversity category was 2.61, with findings ranging from 1.52-2.29. While the Evenness Index (E) rating ranges from 0.5 to 0.76, the medium-high evenness category's overall analysis value is 0.74. The dominance index (D) data showed no dominance amongst species, with a total index value of 0.1 and a range of 0.14 to 0.37. These results indicate that gastropods in the coastal area of ​​Kapas Island have moderate diversity and are evenly distributed. There is no dominance between species, which indicates that the gastropod community is stable with favorable environmental conditions.
The Effect of Black Garlic in Lowering Blood Pressure in Hypertension Patients at Jayamekar Health Center, West Bandung Regency Rumaseuw, Ellen Stephanie; Saptiningsih, Monica; Raniadita, Maria Alfa
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.v24i4.8110

Abstract

The Prolanis program may be a wellbeing benefit framework with a proactive community-based approach that specifically includes hypertension and diabetes patients through community strengthening to decrease NCDs in an coordinates way. Based on the comes about of the 2018 Basic Health Survey, the illnesses most commonly endured by the elderly are hypertention (63.5%), dental issues (53.6%), joint problems (18%), and mouth problems (17%), diabetes (5.7%), heart attack (4.5%) and stroke (4.4%), kidney (0.8%), and cancer (0.4%). The definition of hypertension according to the American Health Association (AHA) is a condition of increased blood pressure, characterized by blood pressure values greater than 130/90 mmHg when measured manually or digitally. Garlic (Allium sativum L.), a plant that is used extensively in the culinary and medical industries, is one of the natural remedies for high blood pressure. Fermentation is one way to turn garlic into black garlic. This study employed a paired sample t-test dependent test for data analysis and a pre-experimental design with a single group pretest and posttest design without a comparison group. After giving two bulbs of single black garlic per day for a week, the study's average posttest systolic blood pressure was 138.31, with a P-value of 0.008. Single black garlic has an effect on reducing blood pressure in hypertensive participants at Jayamekar Health Center, West Bandung Regency.
Formulation of Conventional Herbal Tablets Based on Lempuyang Wangi, Daun Pegagan, Adas Manis and Temulawak for Weight Gain Ratu, Renike Lyana Monalisa; Suwitono, Marvel Reuben; Sulastri, Titin
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.v24i4.8111

Abstract

There are many medicinal plants in Indonesia and people have used these medicinal plants to overcome health problems. Tablets are usually made by mixing these ingredients, then pressing the mixture into a solid and easy-to-take form. This study aims to develop a conventional tablet formulation from herbal extracts of Lempuyang Wangi, Pegagan Leaves, Sweet Fennel and Temulawak to increase weight gain. Data were analyzed by conducting granule testing. The results showed that the developed tablet formulation met the requirements for weight uniformity and disintegration time. However, the hardness of the tablet was still below standard. This study shows the potential for further development of this herbal tablet formulation by optimizing the amount and type of binder. The conclusion is that herbal tablets can increase body weight, but optimization of the formulation is still needed.
Management Strategies for Maize Cultivation in Drylands through Soil Tillage Techniques and Fertilizer Efficiency Arum Dewi, Pervitara; Mulyati, Mulyati; Suwardji, Suwardji
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
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.v24i2b.8117

Abstract

Dryland in Indonesia covers approximately 75.6% of the total land area, with a significant portion utilized for agriculture, including maize cultivation. However, the main challenge in maize farming on dryland is the low organic matter content and soil fertility, which can affect growth and yield. This study aims to review various soil tillage techniques and the application of both organic and inorganic fertilizers in maize cultivation on dryland. The soil tillage techniques examined include no-tillage, minimum tillage, and intensive tillage, focusing on fertilization efficiency and the sustainability of land management practices. The methodology employed was a literature review, analyzing publications indexed in SINTA and/or Scopus between 2019 and 2024. The results of the study indicate that the minimum tillage treatment provided the best results, with phosphorus availability of 17.55 mg/kg, potassium of 0.78 cmol/kg, and an increase in organic carbon to 2.44%, along with a slightly alkaline soil pH of 7.65. Minimum tillage was found to be effective in improving soil fertility without causing significant changes in pH, making it the best option for sustainable maize cultivation on dryland.
Effect of Crude Extracts Fern Leaves as Biostimulants on Biomass and Nodulation of Soybean (Glycine max L.) Dilla, Arfa Iskhia; Noli, Zozy Aneloi; Mansyurdin, Mansyurdin
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
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.v24i1b.8122

Abstract

Soybean (Glycine max) is a primary food commodity for the people in Indonesia, with most of its needs still dependent on imports. Efforts to increase local production require a sustainable strategy, including by use biostimulants. Natural biostimulants, such as fern leaf extract, is proven to be a solution in increasing the growth of plants. This study aims to evaluate the potential use of fern leaf extract as a biostimulant on biomass and the number of root nodules in soybean plants. The method used in this study was a factorial complete randomized design with 2 factors and 3 replications. Factor A is the source of crude extract of fern leaves, control, Gleichenia linearis, Diplazium esculentum, Nephrolepis exaltata, and Blechnum orientale. Factor B is the frequency of application extracts, namely 1 time and 2 times.The results showed that the application of Diplazium esculentum leaf extract with one application significantly increased the total number of root nodules, the number of effective root nodules and vegetative phase biomass. While in Nephrolepis exaltata with one time application can significantly increase the number of total root nodules and the number of effective root nodules. This increase is indicated by the content of bioactive compounds contained in the extract, so that it can increase the growth of soybean plants by stimulating the activity of soil microorganisms.
The Role of Green Ecology in Mitigating Climate Risks to Banjarbaru's Rice Najwa, Nugraha Anthoni; Rizali, Akhmad; Abbas, Saipul
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
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.v24i2b.8124

Abstract

Climate change poses a significant threat to agricultural productivity, particularly in regions like Banjarbaru, Indonesia. This study investigates the impact of climate change on rice farming in Banjarbaru and explores the potential of green ecology practices to mitigate these effects.The research employed a mixed-methods approach, combining quantitative and qualitative data collection techniques. Findings reveal that fluctuating weather patterns, including prolonged droughts and floods, have severely impacted rice cultivation. Farmers reported decreased yields, disrupted planting schedules, and increased pest and disease outbreaks.To address these challenges, the study highlights the importance of adopting green ecology practices, such as organic fertilizer use, integrated pest management, and the utilization of local wisdom-based techniques. These practices can improve soil health, reduce reliance on chemical inputs, and enhance overall agricultural sustainability. However, limited awareness and insufficient government support remain major obstacles to their widespread adoption.Recommendations include improved water governance, increased support for sustainable agriculture, facilitated market access for green products, and enhanced government engagement to foster a climate-resilient agricultural system in Banjarbaru. By implementing these measures, Banjarbaru can mitigate the adverse impacts of climate change and ensure long-term food security.
Modified Mohs Micrographic Surgery and Rotational Flap in The Treatment of Basal Cell Carcinoma Idris, Irma Suryani; Anwar, Anis Irawan; Purnamasari, A. Bida
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
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.v24i1b.8125

Abstract

A malignant tumor that starts in the basal layer of the epidermis is called basal cell carcinoma (BCC). The most prevalent type of skin cancer, BCC, usually appears on the face of middle-aged or older individuals. They originate from the epidermis' basal keratinocytes, are locally invasive, and hardly ever spread. One of cases BCC was reported in a 43 years old man at dermato-venereology department hospital in Makassar. Diagnosis was established based on history taking, clinical features, histopathology examination through Modified Mohs Micrographic Surgery Technique (MMS). The management for this patient was rotation flap technique and gave a good improvement.
The Study of Effectiveness of Chitosan from Pearl Oyster (Pinctada maxima) Shell as Antibacterial in Bone Scaffold Application Alaydrus, Mukaddam; Purnaning, Dyah; Ansyori, Maz Isa; Septiani, Nonik; Alawiyah, Geby; Rahayu, Susi; Taufik, Ahmad
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.v25i1.8135

Abstract

Chitosan is a functional material with potential for bone scaffolds due to its antibacterial properties, biocompatibility, biodegradability, low toxicity, and ability to support tissue regeneration and prevent infections in graft implantation.This study aims to identify changes in functional groups in each isolation process and identify the effect of chitosan concentration  on the activity of Straphylococcus aureus and Escherichia coli bacteria. Chitosan isolation methods are demineralization, deproteination, decolorization, and deacetylation by microwave irradiation. Analysis of chitosan functional groups using FTIR, while antibacterial activity test using diffusion method. Isolation of chitosan from pearl oyster shells (Pinctada maxima sp.) obtained a degree of deacetylation of chitosan of 95.37%. Pearl oyster shell powder identified typical peaks of calcium carbonate (CaCO₃). The demineralized powder sample had calcium carbonate (CO₃²⁻) peaks that disappeared. Furthermore, the deproteinated powder sample produced peaks with amide groups (C=O dan N-H) of reduced protein. Decolorized powder samples did not show drastic changes in the bands of the deproteinated powder spectra, but the spectra could show cleaner and clearer peaks without any interference from pigments. The last, deacetylated powder sample showed a decrease in peak intensity in the 1650 cm⁻¹ (C=O amide). The analysis of the ability of chitosan to inhibit the growth of E. Coli and S. Aureus bacteria was effective at a minimum chitosan concentration of 20%. In comparison, antibacterial activity in S. aureus is better than in E. coli. Chitosan from this shell can serve as an antibacterial, but its manufacturing techniques need optimization for better efficacy.
Diversity of Macroalgae in Sire Beach, North Lombok Arianti, Alya; Pazila, Baiq Dinda Aluh Putri; Ramdhiani, Arsyka; Kurniawan, Ali; Kholidah, Baiq Maylina; Royani, Baiq Nurlatifa; Pratiwi, Baiq Dwi Sekarjati; Candri, Dining Aidil; Ghazali, Mursal
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
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.v24i2b.8140

Abstract

Macroalgae are multicellular lower plant organisms that live in water, especially in marine waters. Macroalgae better known as marine algae are macroscopic algae that can reach several meters in length. Macroalgae are a highly diverse group of organisms in terms of morphology, level of structural complexity, and size. They play an important role in maintaining ocean water quality, reducing coastal erosion, and providing habitat for a wide variety of marine life. This study aimed to identify the macroalgae species present in the Sire Beach area and determine the ecological index of macroalgae in the Sire Beach area. This study was conducted from October to December 2024. Data collection was carried out using the transect method along the coastline with a transect size of 50 m perpendicular to the coastline. The macroalgae data found in this study are categorized into three classes, seven orders, seven families, nine genera, and 15 species of macroalgae. The macroalgae types found include eight species of the phylum Chlorophyta, four species of the phylum Phaeophyta, and three species of the phylum Rhodophyta. Chlorophyta (green algae) is the most common type of macroalgae in Shira Beach. The diversity index (H\') in this study was 2.47, indicating a moderate diversity of macroalgae. The evenness index value obtained is 0.91 which indicates that the evenness value is high. The dominance index in this study is 0.11 which indicates that the level of dominance is low. The obtained Margarev's wealth indicator is 3.69, indicating that the richness of the seeds is moderate.

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