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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Bioscience Jurnal Biologi Universitas Andalas EnviroScienteae Jurnal Biologi Tropis Sains Natural: Journal of Biology and Chemistry Jurnal Hilirisasi IPTEKS (JHI) Jurnal Pembelajaran dan Biologi Nukleus Jurnal Biosense Bioscientist : Jurnal Ilmiah Biologi Jurnal Abdi Inovatif : Pengabdian kepada Masyarakat Biodiversitas Journal of Biological Diversity
Chairul
Universitas Andalas
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Dentistry Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Medicine & Pharmacology Public Health Social Sciences Veterinary Other

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Application of fern Davallia denticuluta L. extract using different solvents as biostimulants for Kopay chili (Capsicum annuum L.) production Suwirmen; Zozy Aneloi Noli; Fepi Dwi Marta; Chairul
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 53 No. 2 (2025): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v53i2.62870

Abstract

Ferns are a potential source of biostimulant compounds due to their rich content of bioactive secondary metabolites. This study aimed to evaluate different solvents for extracting bioactive compounds from Davallia denticulata and to identify the optimal extract formulation for enhancing the growth and yield of Kopay chili. This research was conducted from February to May 2024 at the Plant Physiology Research Laboratory and Greenhouse, Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Andalas, Padang. A completely randomized design with 16 treatment combinations involving four solvents (A1 = aquadest, A2 = methanol, A3 = ethanol, A4 = butanol) and four extract concentrations (B0 = 0 mg L-1, B1 = 25 mg L-1, B2 = 50 mg L-1, and B3 = 100 mg L-1) was employed. Plant growth parameters responded differently to various combinations of extract concentration and solvent type. Methanol extract at 100 mg L-1 significantly increased plant height, ethanol at 50 mg L-1 improved shoot dry weight and root biomass, butanol at 100 mg L-1 increased chlorophyll b and total chlorophyll, and methanol at 25 mg L-1 resulted in higher fruit weight. These results indicate that Davallia denticulata extract, when properly formulated, holds strong potential as a natural biostimulant to improve growth and productivity in chili cultivation. Keywords: active compouns; chili growth; plant extract; secondary metabolites; solvents extraction
DISEMINASI TEKNOLOGI PAKAN BUATAN ALTERNATIF UNTUK PENGEMBANGAN BUDIDAYA IKAN GURAME INTENSIF DALAM UPAYA MENINGKATKAN PRODUKTIVITAS PERIKANAN DI KELURAHAN LIMAU MANIS KECAMATAN PAUH KOTA PADANG Efrizal Efrizal; Nurmiati Nurmiati; Chairul Chairul; Anthoni Agustien; Suwirmen Suwirmen; Rusnam Rusnam; Deswati Deswati
Jurnal Hilirisasi IPTEKS Vol. 3 No. 1 (2020)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v3i1.347

Abstract

Lecturer and community based science and technology activities (IbDM) were carried out with the aim of disseminating technology for Gurame culture intensively in an effort to increase fisheries productivity in Limau Manis, Pauh Subdistrict, Padang City and increase the knowledge and skills of fish farmers (community) in Koto Tangah Village in the field of Gurame fish maintenance business in West Sumatra, so that they are expected to be able to carry out maintenance in a good / environmentally friendly manner. Besides this IbDM activities are also expected to be able to reduce operational costs in maintaining Nirwana Tilapia and in the end can increase the income of the farmers (community) of Limau Manis Village through the development of sustainable fish farming. To achieve optimal technology dissemination results, the main target of IbDM in Pauh Subdistrict is fish farmer groups and community leaders / leaders of Limau Manis Village who are expected to be able to motivate farmers to socialize the method of making alternative formula feeds for intensive development of Nirwana Tilapia aquaculture and environmentally friendly. The methods used in this activity are (1) counseling, with the main material: (a) providing knowledge of various kinds of raw materials that can be used for fish food, (b) providing knowledge about the preparation of artificial food formulas / compositions, ( c) provide knowledge about the process of making artificial food (d) increase public knowledge about how to store pellets that are good to be more durable and (e) provision of material on testing the quality of feed, both physically, chemically and biologically; and (2) Intensive demonstration of making alternative pellet feeds for Nirwana Tilapia aquaculture. From the results of the IbDM activity, it was found that the knowledge and skills of farmer groups in Limau Manis Sub-district, Kec. Pauh, Padang before the IbDM activities were carried out was still very low. However, the motivation or desire of the community of IbDM partner farmer groups to carry out the culture or maintenance of fish is very large. This can be seen from the desire of the IbDM partner farmer group to master the technology of making fish feed from the results of leaf waste and taro stems which are processed into flour relatively high. Furthermore, the results of IbDM activities in the community can increase the knowledge and skills of the community in finding alternative feed for fish feed so that culture activities can run well in IbDM partner areas. In order for aquaculture to run well in partner areas of IbDM, it is necessary to carry out IbDM activities continuously on the techniques of making alternative fish pellets and efficient and effective fish-raising techniques. Besides that, it needs financial support or credit by the authorities to the community or fish farmers for capital to develop their businesses.
DISEMINASI TEKNOLOGI FORMULATED DIET ALTERNATIF DALAM UPAYA MENINGKATKAN PRODUKTIVITAS BUDIDAYA IKAN NILA INTENSIF DI KOTA PADANG Efrizal Efrizal; Nurmiati Nurmiati; Chairul Chairul; Anthoni Agustien; Zuhri Syam; Suwirmen Suwirmen; Rusnam Rusnam; Deswati Deswati
Jurnal Hilirisasi IPTEKS Vol. 4 No. 4 (2021)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v4i4.534

Abstract

Fish cultivators generally experience difficulties providing quality artificial feed (pellets) due to a lack of knowledge and skills in processing technology and making alternative feeds. Besides that, the costs incurred for feed procurement are relatively large, reaching 70 - 80% of the total production costs. However, the provision of feed is often an obstacle because, in addition to the increasingly high price, the quality of available feed does not always match the nutritional needs needed by Fish. The provision of quality feed for intensively cultivated tilapia dramatically affects the resulting growth and productivity. The higher the quality of the feed, the production will also increase. One of the technologies that can be applied to overcome this problem is the manufacture of alternative formulated diets using local raw materials. The method used in this service activity is the transfer of knowledge presented in the socialization activities in the form of 1) introduction to the types of alternative fish feed ingredients sourced from the area, (2) preparation of artificial tilapia feed formulations, (3) manufacturing technology artificial feed (pellets) and 4) monitoring and assistance. The socialization was carried out in the form of a lecture and was followed by a question and answer session. The results of farmer activities recognize the types of local feed that can be used as fish feed, know the preparation of feed formulations, and alternative artificial feed manufacturing technologies. The knowledge and skills possessed by fish cultivators are expected to overcome the difficulties of fish farmers in providing feed so that fish production and cultivation business increase.
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.
Impacts of invasive tree species Bellucia pentamera on plant diversity, microclimate and soil of secondary tropical forest in West Sumatra, Indonesia SOLFIYENI SOLFIYENI; SYAMSUARDI SYAMSUARDI; CHAIRUL CHAIRUL; ERIZAL MUKHTAR
Biodiversitas Journal of Biological Diversity Vol. 23 No. 6 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d230641

Abstract

Abstract. Solfiyeni, Syamsuardi, Chairul, Mukhtar E. 2022. Impacts of invasive tree species Bellucia pentamera on plant diversity, microclimate and soil of secondary tropical forest in West Sumatra, Indonesia. Biodiversitas 23: 3135-3146. The invasion of alien species in a region can alter species diversity. Bellucia pentamera Naudin is considered an alien invasive plant that has spread from Mexico to tropical America, and it is now invading some areas in Indonesia, including the tropical forest of Sumatra. Yet, the effects of its invasion on vegetation and the abiotic environment are not yet well understood. The objective of this study was to investigate the impacts of B. pentamera on species diversity and structure of vegetation, and microclimate and soil conditions of secondary tropical forests in West Sumatra. Vegetation analysis was conducted in secondary forest Bukit Tengah Pulau, South Solok, with three levels of dominance of B. pentamera namely: site 1 and 2 (60% and 16% dominance of B. pentamera respectively) and site 3 (no individual of B. pentamera). Sampling was conducted using a nested plot to collect data for tree, sapling and understorey vegetation for each site. The results showed the total number of tree species at sites 1, 2, and 3 were 23 species, 46 species, and 74 species respectively. For sapling, 20 species were found at site 1, 31 species at site 2, and 58 species at site 3. For understorey plants, 13, 16 and 36 species were detected at site 1, 2 and 3 respectively. The number of species at tree and sapling levels differed significantly among sites. The basal area also differed significantly among sites but not for sapling level. Site 1 was dominated by B. pentamera with Important Value Index (IVI) 130.8%), followed by Croton argyratus (27.63%), and Ficus variegata (26.47%). At site 2, B. pentamera dominated with IVI of 33.68%, followed by Lepisanthes sp. (20.01%) and Sizygium sp. (14.44%). Site 3 was dominated by Palaquium warsurifolium with IVI of 21.15% followed by Croton argyratus (20.02%) and Macaranga hypoleuca (13.21%). Diversity index (H') for tree-level was moderate at site 1 (H' = 1.78) and high at sites 2 and 3 (H' = 3.48 and 4.05). Similarly, the index for sapling was moderate at site 1 (H'= 2.12) and high at sites 2 and 3 (H'= 3.22 and 3.84). For understorey, the diversity index was low at site 1 (H'= 0.82) and moderate at sites 2 and 3 (H'= 1.8 and 2.86). Sites invaded by B. pentamera had a lower soil water content and higher temperature and light intensity, although they had higher nitrogen and phosphorus contents. Our findings suggest that the invasion of B. pentamera had negative impacts on plant biodiversity and microclimate, yet the impact was not clear cut on the soil.
Distribution of invasive alien plant species, Bellucia pentamera, in forest conservation of oil palm plantation, West Sumatra, Indonesia SOLFIYENI SOLFIYENI; ERIZAL MUKHTAR; SYAMSUARDI SYAMSUARDI; CHAIRUL CHAIRUL
Biodiversitas Journal of Biological Diversity Vol. 23 No. 7 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d230744

Abstract

Abstract. Solfiyeni, Mukhtar E, Syamsuardi, Chairul. 2022. Distribution of invasive alien plant species, Bellucia pentamera, in forest conservation of oil palm plantation, West Sumatra, Indonesia. Biodiversitas 23: 3667-3674. Bellucia pentamera has been found in disturbed forests across Indonesia, but little is known about how it spreads under its tree canopy. The spread of the invasive plant B. pentamera in the PT KSI conservation forest area was investigated. The goal of this research is to study B. pentamera's strategy for exploiting forest gaps horizontally and vertically on degraded forest vegetation invaded by B. pentamera at various degrees of invasion. An Unmanned Aerial Vehicle (UAV) and direct field mapping are used for the mapping approach. Aerial photographs revealed 40 B. pentamera trees and 32 non-B. pentamera trees in forest areas with varying degrees of B. pentamera invasion (based on the ratio of B. pentamera non-B. pentamera: dense and loose). Bellucia pentamera trees were distributed evenly in a large gap and randomly in a small gap/space between the canopy, whereas sapling and seedling B. pentamera trees were distributed in groups, uniformly and randomly, according to microhabitat conditions under the canopy of B. pentamera and non-tree trees. Bellucia pentamera seedlings and saplings were detected under the parent tree's canopy rather than in the canopy gaps. Different responses were seen in seedlings, saplings, and juvenile stages concerning the explanatory factors investigated and between the two stands. The purpose of the study was to determine the factors that influence the distribution of the B. pentamera species in conservation forest areas with different compositions of existence, both vertically and horizontally, using drones and direct measurements in the field.
Plant species composition and diversity in traditional agroforestry landscapes on Siberut Island, West Sumatra, Indonesia GUSMARDI INDRA; ERIZAL MUKHTAR; SYAMSUARDI SYAMSUARDI; CHAIRUL CHAIRUL; MANSYURDIN MANSYURDIN
Biodiversitas Journal of Biological Diversity Vol. 25 No. 3 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250345

Abstract

Abstract. Indra G, Mukhtar E, Syamsuardi, Chairul, Mansyurdin. 2024. Plant species composition and diversity in traditional agroforestry landscapes on Siberut Island, West Sumatra, Indonesia. Biodiversitas 25: 1286-1296. The research conducted on Siberut Island, situated in the western part of Sumatra, focuses on traditional communities practicing an agroforestry land management system. This study aimed to identify the plant species within agroforestry land, their respective uses, and techniques for adapting these species to the landscape in two villages, Matotonan in South Siberut District and Bojakan in North Siberut District, Mentawai Islands. Data collection involved direct observation, unstructured interviews for plant species utilization, and transects with a 10m width along contour lines for landscape data. The findings revealed that Siberut's traditional agroforestry land, known as "Pomunean," is divided into Tinugglu and Mone categories based on land slope, proximity to riverbanks, and planted species. Plant species in agroforestry land served nine primary purposes, including staple and additional food, construction, furniture, medicine, firewood, traditional rituals, and commercial activities. Tinugglu land exhibited a higher Landscape Utilization Value Index (LUVI) at 57% compared to Mone land (43%). Regarding specific plant types, Metroxylon sago (Bojakan) and Durio zybethinus (Matotonan) had the highest LUVI values. These findings shed light on the vital role that traditional ecological knowledge and sustainable land management play in maintaining the delicate balance between human livelihoods and the preservation of natural ecosystems.
The study of diversity and distribution of bats in several fragmented forests and small adjacent islands in Batam City, Riau Island, Indonesia FAUZIAH SYAMSI; WILSON NOVARINO; DAHELMI DAHELMI; CHAIRUL CHAIRUL
Biodiversitas Journal of Biological Diversity Vol. 26 No. 1 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d260123

Abstract

Abstract. Syamsi F, Novarino W, Dahelmi, Chairul. 2025. The study of diversity and distribution of bats in several fragmented forests and small adjacent islands in Batam City, Riau Island, Indonesia. Biodiversitas 26: 223-232. Bats are ecologically and taxonomically diverse and crucial in tropical ecosystems, including on islands. This study compares bat diversity in fragmented forests on urban islands and adjacent islands connected by bridges to assess the impact of urbanization on bat populations, providing insights for conservation and habitat management. We sampled bats across four sites in Batam City, Indonesia, including two secondary forests (SF1 and SF2) and two small islands (SI1 and SI2). Using 120 harp trap nights and 120 net nights, we captured 429 bats representing 15 species and 4 families. Our findings revealed moderate bat diversity (H' 1.02 to 1.66), with SF1 being the most stable habitat, showing balanced species richness, evenness (0.72), and low dominance (0.24), indicating an evenly distributed community. The Bray-Curtis Similarity index indicated that SF1 had a distinct bat community with only 58% similarity to other habitats. Notably, two near-threatened species were found in SF1, emphasizing its ecological significance. The study suggests that fragmented forests with healthy vegetation and habitat complexity surrounding urban areas are more supportive of bat populations than small islands with limited resources. These results highlight the need for targeted conservation efforts in forest fragments surrounding urban areas to preserve bat diversity in Batam City, Riau Island, Indonesia.
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 Aldi Yulianda Anita Mayang Sari Anthoni Agustien Aulia Azhar Cleopatra Dahelmi Dahelmi Daimon Syukri Deswati Deswati Dwi Nofa Rina Erizal Mukhtar FAUZIAH SYAMSI Fauziah Syamsi Fepi Dwi Marta Firda Az zahra Firham Yasra GUSMARDI INDRA Indah Asmayannur Indra Junaidi Zakaria Kamelia Putri M. Nur Kasman Karimi Lidia Gusvita Nasra Lily Rahmawati Lily Rahmawati Linda Agustin lola sutra islami arwin M. Idris Mansyurdin Martha Aulia Reyndi Mildawati Mildawati Nurainas Nurainas Nurfitri Kartikasari Nurmiati, N Ririn Fatma Nanda Rizka Sefmaliza Rizky Paramita Mukhti Rusnam Rusnam Savira Geovana Senriella Habinuya Solfiyeni Solfiyeni Sunardi Sunardi Suwirmen, Suwirmen Syamsuardi Syamsuardi Tesri Maideliza Thoriq Alfath Febriamansyah Tibrani Tibrani Vera Pertiwi Wilson Novarino Witri Zulaspita Yuwindah Gustanti Zozy Aneloi Noli Zuhri Syam Zuhri Syam