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All Journal Bioscience Jurnal Biologi Universitas Andalas EnviroScienteae Jurnal Biologi Tropis Sains Natural: Journal of Biology and Chemistry Jurnal Pembelajaran dan Biologi Nukleus Jurnal Biosense Bioscientist : Jurnal Ilmiah Biologi
Chairul
Biology Department, Mathematics And Natural Science Faculty, Universitas Andalas, Jl. Universitas Andalas, Padang, 25163, Indonesia.
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Medicine & Pharmacology Public Health Social Sciences

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Potensi Karbon dan Nilai Jasa Lingkungan di Agroforestri LPHN (Lembaga Pengelola Hutan Nagari) Sungai Buluh, Padang Pariaman, Sumatera Barat Lily Rahmawati; Chairul; Solfiyeni
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 4 (2025): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i4.19456

Abstract

This study aims to analyze biomass quantity, carbon reserves, carbon sequestration, and to determine the environmental value of carbon sequestration in the agroforestry area of LPHN Sungai Buluh Padang Pariaman. This is because agroforestry areas can also play a role in carbon sequestration in addition to their economic function for the community. This study was conducted using purposive sampling to determine the location of 30 observation plots. Data collection was carried out using destructive sampling for undergrowth and litter data and non-destructive sampling for tree and sapling strata data. The results of this study were a total biomass of 280.768 tons/ha, total carbon reserves obtained from the biomass value of 131.955 tons/ha, and total carbon sequestration of 484.294 tons/ha. Meanwhile, the environmental service value of carbon sequestration was IDR 82,566,423,881.28/ton/year. The environmental service value obtained from this research location is relatively low compared to studies conducted in other locations, primarily due to the limited vegetation types and small study area.
Alopecia in Bats from Tropical Urban Islands Fauziah Syamsi; Wilson Novarino; Dahelmi Dahelmi; Chairul Chairul
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 2: Jurnal Pembelajaran Dan Biologi Nukleus June 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i2.7188

Abstract

Background: Alopecia or alopecic syndrome is a hair loss condition on the body. Alopecia is caused by a wide variety of factors both internal to the individual (i.e. androgen activity, nutritional deficiencies, metabolic stress, hormonal imbalances) and external (i.e. human-induced pressures, allergens, ectoparasites, fungal dermatitis, bacterial, toxicities, environmental contaminant exposure, idiopathic disease, poor habitat conditions, anthropogenic activities, zinc deficiency, and ingestion of plant toxins). Methods: This study was conducted at four locations in Batam City, consisting of two fragmented forests in the city center and two islands far from the city area. Bats were captured using mist nets and harp traps with a total sampling effort of 120 net nights and 120 harp trap nights. Findings: This study captured 417 bats across seven species, with an overall alopecia prevalence of 10.79 %. The highest prevalence was found in Pipistrellus tenuis (100%), Kerivoula pellucida (50 %), and Macroglossus minimus (20 %), likely due to the small sample sizes of these species. Larger sample sizes resulted in lower prevalence rates: Balionycteris maculata (22.2 %), Cynopterus horsfieldii (11.1 %), C. brachyotis (9.2 %), and C. sphinx (6.86 %). The most severe hair loss generally occurs on the shoulders and neck. Some individuals show hair loss on the back, head, chest, abdomen, and other parts of the body. Alopecia is found in both males and females from mild to severe. The prevalence of alopecia in all species was higher in fragmented forests in urban to periurban, and rural areas. This was associated with differences in the level of anthropogenic pressure. Contribution: These findings provide a scientific contribution to understanding the relationship between alopecia in bats and anthropogenic pressures and highlight the importance of habitat conditions in population health in fragmented environments.
Region-Based Plant Vegetation Productivity in Cibinong Botanical Garden, Bogor Regency Chairul Chairul; Sunardi Sunardi; Senriella Habinuya
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.v26i1.10863

Abstract

Vegetation productivity in botanical gardens plays a crucial role in carbon sequestration and soil nutrient regulation, yet region-based differences in vegetation performance under ex situ conservation systems remain poorly understood. This study aims to analyze vegetation composition and structure, estimate biomass and carbon stock, and evaluate the influence of dominant species on soil nutrient content across different regional collections in the Cibinong Botanical Garden, Bogor Regency. The research was conducted in seven regional collections (Java–Bali, Sumatra, Kalimantan, Sulawesi, Maluku, Nusa Tenggara, and Papua) using a survey method with 20 × 50 m plots. Tree biomass was estimated using allometric equations, while carbon stock was calculated based on organic carbon content. Soil chemical properties, including organic carbon and phosphorus, were also analyzed. The results showed that the Kalimantan region had the highest biomass and carbon stock, reaching 237.26 tons/ha and 111.51 tons/ha, respectively, largely influenced by the dominance of Pentace sp. In contrast, the Maluku region exhibited the highest soil organic carbon and available phosphorus, despite having lower biomass values. These findings indicate that vegetation productivity is not solely determined by biomass accumulation, but also by species composition, stand structure, and soil nutrient dynamics. This study highlights the importance of region-based vegetation management in botanical gardens to optimize carbon storage and maintain soil fertility under ex situ conservation systems.
Co-Authors - Solviana - Solviana Ade Adriadi Anita Mayang Sari Aulia Azhar Cleopatra Dahelmi Dahelmi Daimon Syukri Dwi Nofa Rina Erizal Mukhtar Fauziah Syamsi Firda Az zahra Firham Yasra Indah Asmayannur Indra Junaidi Zakaria Kamelia Putri M. Nur Lidia Gusvita Nasra Lily Rahmawati Lily Rahmawati Linda Agustin lola sutra islami arwin M. Idris Martha Aulia Reyndi Nurainas Nurainas Nurfitri Kartikasari Ririn Fatma Nanda Rizka Sefmaliza Rizky Paramita Mukhti Savira Geovana Senriella Habinuya Solfiyeni Solfiyeni Sunardi Sunardi Suwirmen, Suwirmen Syamsuardi Syamsuardi Tesri Maideliza Thoriq Alfath Febriamansyah Vera Pertiwi Wilson Novarino Witri Zulaspita Yuwindah Gustanti Zozy Aneloi Noli Zuhri Syam