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All Journal Jurnal Biologi Tropis
Artanti, Nabilah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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The Effect of Leaf Area on Transpiration Rate in Various Types of Tropical Leaf Plants in Open Environments Artanti, Nabilah; Rianti, Farah; Septianingrum, Beatrix Putri; Khairurohmah, Dinda; Ramadani, Aida Lutfia; Yahya, Leoni Agustiyar Nur; Marianingsih, Pipit
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.v25i4.9972

Abstract

The rate of transpiration in plants is affected by morphological characteristics and environmental conditions. This research aimed to examine how leaf surface area influences the transpiration rate of three tropical plant species: taro (Colocasia esculenta), starfruit (Averrhoa carambola), and water guava (Syzygium aqueum). The study measured the initial and final mass of leaves over a defined observation period to calculate the transpiration rate per unit area. Findings indicated that taro leaves exhibited the highest transpiration rate (0.0628 mg·cm⁻²·min⁻¹), followed by starfruit (0.0481 mg·cm⁻²·min⁻¹), while water guava recorded the lowest value (0.0350 mg·cm⁻²·min⁻¹), despite its relatively large leaf area. These results suggest that leaf area alone is not the primary determinant of transpiration rate; other factors such as cuticle thickness, stomatal density, and environmental parameters (including humidity, temperature, and light intensity) also play significant roles. Future research is recommended to explore a wider range of plant species and controlled environmental conditions to achieve more comprehensive insights.
The Effect of Physical Activity on Respiratory Rate in Humans Artanti, Nabilah; Fauziah, Fadilatul; Zahra, Mutia; Fitri, Auliani; Maulina, Cindy; Elin, Elin; Hendriyani, Mila Ermila
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): 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.v25i4b.10954

Abstract

The human respiratory system plays a vital role in gas exchange, particularly the intake of oxygen (O₂) and the removal of carbon dioxide (CO₂), which are essential for cellular metabolism. Respiratory rate is a physiological parameter that reflects pulmonary ventilation activity and varies according to the intensity of physical activity. This study aimed to analyze the effect of physical activity on respiratory rate in five participants. A simple experimental method was used, involving three activity conditions: resting (sitting), walking, and running. Respiratory rate was measured for one minute under each condition with three repetitions, and the data were analyzed descriptively. The results showed that respiratory rate increased with higher levels of physical activity: 21–28 breaths per minute at rest, 24–48 during walking, and 30–86 during running. This increase indicates a physiological response to meet the body’s elevated oxygen demand and CO₂ elimination during exertion. Therefore, respiratory rate can serve as an important indicator of physical adaptation, fitness level, and respiratory system efficiency. These findings have practical implications for health monitoring, physical education, and early detection of respiratory stress during exercise or clinical assessment.
Inventory of Medicinal Plants and Conservation Efforts among the Indigenous Community of Kedayon Village, Kemanisan Subdistrict, Curug District, Serang City Azahrah, Fatimah; Artanti, Nabilah; Nurhasanah, Nurhasanah; Saefulloh, Aef; Fitriana, Desi Eka Nur
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): 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.v26i1.11180

Abstract

Indonesia is a mega-biodiversity country with a wealth of medicinal plants and strong ethnobotanical knowledge among indigenous communities. However, modernization and the declining interest of the younger generation have caused traditional knowledge and the availability of medicinal plants to be increasingly threatened, including in Kedayon Village, Kemanisan Subdistrict, Curug District, Serang City. This study aims to: identify the types of medicinal plants used by the Kedayon Village community, describe how they are utilized in traditional medicine, and analyze forms of conservation efforts that can be implemented by the community in a sustainable manner. The method used is descriptive qualitative through field observation, documentation, and interviews. The results of the study identified 16 types of medicinal plants utilized from various plant parts such as leaves, roots, rhizomes, and seeds, with simple processing techniques such as boiling, squeezing, or steeping. These findings indicate that the community still relies on natural resources for traditional health needs. Recommended conservation efforts include community-based in-situ cultivation through home gardens and yards, accompanied by education and routine maintenance. These efforts are important to maintain the scarcity of medicinal plants while preserving local knowledge for future generations.
Co-Authors Azahrah, Fatimah Elin, Elin Fauziah, Fadilatul Fitri, Auliani Fitriana, Desi Eka Nur Khairurohmah, Dinda Maulina, Cindy Mila Ermila Hendriyani, Mila Ermila Nurhasanah Nurhasanah Pipit Marianingsih Ramadani, Aida Lutfia Rianti, Farah Saefulloh, Aef Septianingrum, Beatrix Putri Yahya, Leoni Agustiyar Nur Zahra, Mutia