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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 2,955 Documents
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The Role of Extension Agents in Improving Livestock Productivity to Support Sustainable Livestock Development Maria Alfonsa Ngaku; Agnes Yunita Dea; Varianus Teru
Jurnal Biologi Tropis Vol. 26 No. 4 (2026): in Progress
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.v26i4.12539

Abstract

Livestock extension workers play a key role in efforts to increase livestock productivity while ensuring sustainable livestock development. As catalysts for change, extension workers disseminate technological innovations, provide non-formal education, and provide technical assistance aimed at increasing the capacity of livestock farmers. The method used in this study was a literature study with qualitative descriptive analysis techniques through library research, which examined the role of livestock extension workers in increasing livestock productivity in support of sustainable livestock development. As a result of structured extension activities, extension workers help farmers implement efficient feed management, appropriate reproduction strategies, preventive animal health practices, and cultivation techniques that can improve the quality and quantity of livestock production. In addition to technical aspects, extension workers also play a role in strengthening farmer institutions, developing agribusiness partnership patterns, and improving business literacy so that farmers are able to compete in a more modern value chain. On the environmental side, extension workers encourage the implementation of environmentally friendly farming practices through waste management, resource conservation, energy efficiency, and the application of animal welfare standards that ensure the sustainability of the production ecosystem. Thus, the role of extension workers is not only focused on increasing productivity, but also on building a resilient, adaptive, and socially and ecologically responsible farming system. Overall, extension workers are the main drivers of livestock transformation towards sustainable development that can support food security, farmer welfare, and long-term sustainability of natural resources.
Composition and Abundance of Habitat Plants Amorphophallus hewittii Alderw. in Mount Roban Forest, Singkawang City Restu Dwi Candra; Irwan Lovadi; Siti Ifadatin; Dwi Gusmalawati
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.v26i3.12567

Abstract

Amorphophallus hewittii is a characteristic species of Southeast Asian tropical forests that depends on its habitat conditions. This study aims to identify the composition of plant species forming the habitat of A. hewittii in Gunung Roban Forest, East Singkawang, and analyze its community structure based on abundance, Importance Value Index (IVI), and species diversity. Data collection was conducted in October 2023 using a purposive sampling method with a stratified plot design. A total of 18 species with 247 individuals were found, dominated by Durio zibethinus (41 individuals), Hevea brasiliensis (39 individuals), and Caryota mitis (23 individuals), with the highest number of individuals in the western part (70 individuals) and the lowest in the northern part (42 individuals). D. zibethinus had the highest IVI at the tree and seedling levels, while Artocarpus altilis was dominant at the sapling level and H. brasiliensis at the pole level. The Shannon-Wiener Diversity Index indicated a moderate level of diversity. The average air temperature in the habitat ranged from 26–29°C, soil temperature from 25–28°C, air humidity from 28–83%, light intensity from 423–660 Cd, and soil pH from 6.0–7.0. The dominance of commercial species reflects human intervention, yet the moderate diversity level suggests that the ecosystem remains relatively stable and productive. 
HIV-Associated Dementia: Pathogenesis, Risk Factors, Diagnosis, and Management – A Literature Review Baiq Tasyfa Hasya Auliya Tsaniya; Fidelya Fitria Hakim; I Wayan Putra Kesumantara; Sheilla Ninditya Putri; Herpan S. Harahap
Jurnal Biologi Tropis Vol. 26 No. 4 (2026): in Progress
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.v26i4.12950

Abstract

HIV-associated dementia (HAD) is the most severe form of HIV-associated neurocognitive disorders (HAND), characterized by significant cognitive impairment and decline in daily functioning. Despite the widespread use of antiretroviral therapy (ART), neurocognitive impairment remains an important clinical challenge among people living with HIV. This review aimed to summarize current evidence regarding the pathogenesis, diagnosis, risk factors, and management of HIV-associated dementia. The study was conducted using a literature review method by examining relevant scientific articles and publications discussing HIV-associated dementia and HIV-associated neurocognitive disorders. The findings indicate that HIV enters the central nervous system through the Trojan horse mechanism, infects microglia and macrophages, and induces chronic neuroinflammation, leading to neuronal damage and cognitive decline. Major risk factors include severe immunosuppression, advanced age, comorbidities, and social determinants. Diagnosis is established based on the Frascati criteria and supported by cognitive screening instruments. Antiretroviral therapy remains the cornerstone of treatment and may be complemented by cognitive rehabilitation and psychosocial support. In conclusion, HAD is a complex neurocognitive complication of HIV infection that continues to affect patients despite advances in ART. Early detection and multidisciplinary management are essential to preserve cognitive function and improve quality of life. Further studies are recommended to improve early screening strategies and develop more effective interventions for HIV-associated cognitive impairment.
Cubitus Varus Following Pediatric Supracondylar Humeral Fracture: A Narrative Review of Pathogenesis, Diagnosis, and Contemporary Management Elyana Tabina Astariyati; Dinni Anisa Ishabil; Ni Putu Ayu Sanchita Ardyani; Adhwa Renata; Juan Maolidi; Noor Hidayani Rezky Mulya; Anom Josafat
Jurnal Biologi Tropis Vol. 26 No. 4 (2026): in Progress
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.v26i4.12951

Abstract

Cubitus varus, or gunstock deformity, is a three-dimensional post-traumatic elbow deformity most commonly associated with malunion after pediatric supracondylar humeral fracture. The deformity combines coronal varus, sagittal hyperextension, and internal rotation and may be associated with pain, motion limitation, instability, ulnar nerve symptoms, and cosmetic concerns. This narrative review synthesizes international peer-reviewed evidence published from 2016 through August 2026 on pathogenesis, clinical assessment, imaging, and contemporary management. Literature was identified through PubMed, ScienceDirect, SpringerLink, Frontiers, and Google Scholar using terms related to cubitus varus, supracondylar humeral fracture, distal humeral malunion, corrective osteotomy, guided growth, and three-dimensional planning. Recent evidence supports malunion after inadequate reduction or loss of alignment as the principal mechanism, while the limited remodeling capacity of coronal and rotational deformity contributes to persistence. Diagnosis requires comparison with the contralateral elbow, range-of-motion and neurovascular examination, stability assessment, and radiographic evaluation, including humerus-elbow-wrist and Baumann angles. Observation is appropriate for selected mild asymptomatic deformities. Symptomatic, functionally limiting, unstable, neurologically complicated, severe, or unacceptable cosmetic deformities are generally treated with distal humeral corrective osteotomy. Contemporary techniques include lateral closing-wedge, dome, step-cut, reverse-V, and multiplanar osteotomies. Three-dimensional planning and patient-specific guides improve the accuracy of complex correction, while guided growth is an option for carefully selected skeletally immature children. Treatment should be individualized according to deformity pattern, symptoms, skeletal maturity, and surgical expertise.
Exploring Decomposer Microorganisms in Making Goat Manure Fertilizer Wayan Wariata; Tia Febrianti; Anwar Rosyidi; Hasma Hasma
Jurnal Biologi Tropis Vol. 26 No. 4 (2026): in Progress
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.v26i4.13138

Abstract

This study aimed to investigate the presence of decomposer microorganisms in the production of organic fertilizer derived from goat manure fermented using Local Microorganisms (MOL). The research was conducted at the Teaching Farm Lingsar and the Biotechnology and Animal Products Laboratory, Faculty of Animal Science, University of Mataram, from January to February 2026. The study employed a fermentation process in which goat manure was fermented with MOL for 30 days, followed by microbial isolation and enumeration using the Total Plate Count (TPC) method. The observed parameters included the population of lactic acid bacteria (LAB) and the population of molds/fungi as indicators of decomposer microorganisms. The data were analyzed using a paired sample t-test. The results showed that the average bacterial population increased from 5.67 log CFU/g in the control treatment (P0) to 6.33 log CFU/g in the fermentation treatment (P1), while the average mold population increased from 6.00 colonies/g to 10.67 log CFU/g. However, statistical analysis indicated that these increases were not significantly different (P > 0.05). Nevertheless, the presence of microorganisms in both treatments suggested that the decomposition process continued to occur and had the potential to support the formation of more stable organic fertilizer.  Therefore, the fermentation of goat manure using MOL did not have a significant effect on the population of decomposer microorganisms, although it still contributed to the decomposition of organic matter.

Page 296 of 296 | Total Record : 2955

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