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All Journal Biogenesis: Jurnal Ilmiah Biologi Jurnal Biologi Tropis Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Jurnal AbdiMas Nusa Mandiri Journal of Natural Sciences Sriwijaya Bioscientia BIOVALENTIA: Biological Research Journal Jurnal Sylva Lestari Jurnal Medika: Medika
Yadi Oktariansyah
Sriwijaya University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Education Energy Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Inventarisasi dan identifikasi tumbuhan dan insekta di sekitar kawasan Taman Firdaus Universitas Sriwijaya Indralaya, Sumatera Selatan Oktariansyah, Yadi; Harvianti, Yuniar; Pragustiandi, Guntur; Safitri, Ayu; Putri, Cyntia Sabarani; Iqbar, Muhammad
Sriwijaya Bioscientia Vol 4 No 2 (2023)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24233/sribios.4.2.2023.456

Abstract

Penelitian untuk menginventarisasi dan mengidentifkasi tumbuhan dan insekta yang berada di kawasan taman Firdaus dan perkemahan bumi Universitas Sriwijaya, Indralaya dilaksanakan pada 16 November 2024. Penelitian ini bertujuan untuk mengetahui jenis-jenis tumbuhan dan insekta yang ada di kasawan tersebut. Penelitian dilakukan dengan cara eksploratif mulai dari Jurusan Biologi hingga kawasan tersebut. Hasil penelitian pada tumbuhan didapatkan 9 famili meliputi Aracaceae, Asteraceae, Dilleniaceae, Dryopteridaeae, Verbenaceae, Lamlaceae, Malvaceae, Combretaceae, Myrtaceae, dan Dilleniaceae, sedangkan pada insekta didapatkan Lycidae, Lycaenidae, Nymphalidae, Peridae, Libellulidae, Acrididae, Paradoxosomatidae, dan Spirostreptida.
A Physiological Status Affect Reptiles Thermoregulation’s Strategy: A Review Oktariansyah, Yadi
BIOVALENTIA: Biological Research Journal Vol. 11 No. 1 (2025)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24233/biov.11.1.2025.459

Abstract

As an ectotherm class, reptiles' thermoregulation has unique mechanisms through the combination of physiological traits, behavioral adjustments, and environmental aspects. Reptiles need to do thermoregulation since their body temperature is affected by environmental aspects. Reptiles experience physiological status, which plays an important role in thermoregulatory behavior. This study explores the response of reptiles' thermoregulation strategy under various physiological states, representing facts about the complex thermoregulation mechanism. Specific physiological statuses such as life stage, reproduction status, immune and health system, dehydration, and digestive have been deeply explored by researchers to identify the effects of these traits on reptiles' thermoregulation strategies. These traits significantly affect reptiles' body temperature, such as having low Tb under the dehydration state and choosing higher Tb to promote food digestion under the digestive state. However, the consistency of these results may vary among reptile species that refer more to behavioral adjustment and mating process rather than physiological status. Different life stages and reproduction statuses also influence reptiles' thermoregulation strategy and implicate the evolutionary mechanism for gravid females to obtain a thermally suitable environment, especially for their embryos. Under behavioral adjustments, reptiles alter microhabitat selection to encounter low thermal environments such as water desiccation or climate change threats. Further research that combines physiological traits, behavioral adjustment, and environmental aspects through a biophysical model can contribute to demonstrating how thermoregulation strategies may compromise different physiological statuses. For reptiles, climate change is strongly associated with population loss. Therefore, this study with relevant topics may stand as a proxy for conservation regulation and policymakers to reduce unfavorable thermal environment aspects through habitat degradation.
Analysis of Soil Insect Diversity as Bioindicator of Post-Mining Land Reclamation Success Rate: Case Study at West Banko Area, PT Bukit Asam Kamal, Mustafa; Ramadhani, Audya Rahma; Oktariansyah, Yadi
BIOVALENTIA: Biological Research Journal Vol. 11 No. 1 (2025)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24233/biov.11.1.2025.468

Abstract

Open-pit coal mining damages habitat, alters soil, and lowers biodiversity, therefore harming the ecosystem. Efforts at land reclamation involving topsoil restoration and regrowth are very vital for ecological recovery. This study uses soil insect diversity as a bioindicator of West Banko area PT Bukit Asam, South Sumatera, reclamation success. Soil insects were collected using combinations of soil extraction and forest floor collection methods along transect lines. Environmental factors like soil temperature, pH, humidity, and light intensity were measured to determine habitat conditions. Data demonstrates that Formicidae (Camponotus spp.) dominates the total of 154 soil insect individuals across eight genera, four families, and three orders. Considering excellent development in the restoration effort, the Shannon-Wiener diversity index (H') = 1.80656 indicates a minor degree of biodiversity. But the preponderance of monoculture Eucalyptus plants may limit insect diversity. increased soil humidity levels (60–80%) linked with increased insect population, therefore underlining the significance of soil moisture in the regeneration of ecosystems. The findings underline the need for different vegetation in reclamation strategies to help in better ecological balance and biodiversity. This study would be rather helpful for policymakers to focus on land restoration projects for ecologically acceptable post-mining ecosystem regeneration.
Analisis keanekaragaman serangga tanah sebagai bioindikator kesehatan ekosistem: studi kasus lahan gambut Desa Perigi, Ogan Komering Ilir, Sumatera Selatan Oktariansyah, Yadi; Kamal, Mustafa; Patricia, Margareth
Sriwijaya Bioscientia Vol 6 No 2 (2025)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24233/sribios.6.2.2025.506

Abstract

Lahan gambut merupakan ekosistem penting yang berfungsi sebagai penyimpan karbon, pengatur tata air, dan habitat biodiversitas, namun rentan mengalami degradasi. Penelitian ini menginventarisasi keanekaragaman serangga tanah di lahan gambut Desa Perigi, Kecamatan Pangkalan Lampam, Kabupaten Ogan Komering Ilir, serta menilai potensinya sebagai bioindikator kesehatan ekosistem. Survei dilakukan pada Agustus 2023 di lima lokasi dengan karakteristik lingkungan berbeda; data dianalisis menggunakan indeks Shannon–Wiener (H’), dominansi (C), dan keseragaman (E). Hasil mencatat 165 individu yang tergolong dalam 12 spesies. Komunitas didominasi oleh Oides sp. (17,58%), Solenopsis invicta (17,58%), dan Gryllus bimaculatus (16,36%), sementara Lasius emarginatus (13,94%), Coelophora maculata (7,88%), dan Solenia sp. (7,88%) juga berkontribusi besar; Tetraphala collaris merupakan spesies dengan kelimpahan terendah (1,21%). Nilai H’ = 2,203 menunjukkan keanekaragaman sedang, dengan pola dominansi yang mengindikasikan kondisi ekosistem tertekan pada sebagian lokasi. Kehadiran spesies sensitif (Salina celebensis) pada mikrohabitat tertentu menandakan sebagian tapak masih relatif baik. Temuan ini menegaskan serangga tanah efektif sebagai bioindikator kesehatan ekosistem gambut dan relevan untuk pemantauan konservasi–restorasi.  
Biodiversity Patterns of Flora and Fauna in Mangrove Ecosystems under Anthropogenic Pressure in South Sumatra, Indonesia Sarno; Ikhsan, Muhammad; Desitarani; Oktariansyah, Yadi; Pragustiandi, Guntur
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1190

Abstract

Mangrove habitats serve vital functions; however, this habitat tends to face degradation affected by human activity. This study proposes to evaluate the diversity of flora and fauna in two mangrove habitats in South Sumatra, Indonesia: Banyuasin and Ogan Komering Ilir (OKI). Vegetation analysis was assessed using standard transect and plot-based methods, while fauna were recorded using a rapid assessment method. The results indicated that Banyuasin exhibited a superior flora diversity through a higher Shannon-Wiener Index (H' = 1.61) in contrast to OKI (H' = 1.04); however, the disparity was not statistically significant (p = 0.06). Banyuasin had a greater variety of mangrove trees, including Avicennia alba, Nypa fruticans, Sonneratia caseolaris, Kandelia candel, and Bruguiera gymnorrhiza, than OKI, which only had A. alba and S. caseolaris. In Banyuasin, fauna observations found three mammal species, 17 bird species, and 6 herpetofauna species, compared to one mammal, 16 birds, and 4 herpetofauna in OKI. Species such as Trachypithecus cristatus, Prionailurus sp., and Elanus caeruleus were only found in Banyuasin. These findings conclude that higher human activity in OKI may lead to biodiversity degradation. Therefore,  there is an urgent need for robust conservation policies and community-based management to preserve ecosystem services in the mangrove habitats of these regions. Keywords: biodiversity, conservation, mangrove, rapid assessment, vegetation analysis
Feed Efficiency and Growth Modeling of KUB Chicken: A Comparison Between Commercial and Alternative Feeds Oktariansyah, Yadi; Cahyani, Riski; Masito, Masito
Journal of Natural Sciences Vol 6, No 3 (2025): Journal of Natural Sciences November
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v6i3.989

Abstract

Feed costs constitute a major expense in poultry production, emphasizing the need for efficient feeding strategies among smallholder farmers. The Ayam Kampung Unggul Balitbangtan (KUB) chicken is a promising native breed, yet limited research integrates feed efficiency with growth prediction modeling. This study evaluated commercial and alternative feed types while developing growth models. Twenty-five KUB chickens (~7 days old) were assigned to five dietary treatments: 100% commercial feed, 100% corn, 100% rice bran, 50% commercial + 50% corn, and 50% commercial + 50% rice bran, arranged in a completely randomized design with five replications. Body weight and feed conversion ratio (FCR) were recorded weekly for four weeks and analyzed using ANOVA. Nonlinear models (Exponential, Gompertz, Logistic) were applied for growth prediction. Feed type (F = 14.30, p 0.001), week (F = 292.68, p 0.001), and their interaction (F = 3.53, p 0.01) significantly affected body weight. The mixed diet of 50% commercial feed and 50% corn produced the highest final weight (228.8 g), while corn and rice bran diets resulted in lower growth. Logistic models best described balanced diets, whereas Exponential models reflected nutrient-limited growth, providing predictive insights aimed at enhancing feed strategies for smallholder farmers.
Genetic Diversity and Phylogenetic Relationships of Pometia pinnata Variants from South Sumatra Using RAPD Markers Hanum, Laila; Novira, Sandra; Oktariansyah, Yadi
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.10536

Abstract

Matoa (Pometia pinnata J.R. & G. Forst) is a tropical tree of the Sapindaceae family widely distributed in Southeast Asia, yet the genetic diversity and evolutionary relationships among its variants in South Sumatra remain poorly understood. This study aimed to clarify the genetic structure of four local variants forest, red, yellow, and green matoa using Random Amplified Polymorphic DNA (RAPD) markers. Leaf samples representing each variant were collected across different regions of South Sumatra and analyzed through standard molecular procedures, including DNA extraction and RAPD amplification using five primers. Cluster analysis based on Jaccard’s coefficient and UPGMA revealed two major genetic groups, indicating substantial variation among the studied variants. Red and yellow matoa showed the closest genetic affinity, whereas forest matoa was the most distinct from the others. These findings demonstrate considerable intraspecific diversity within matoa populations in South Sumatra. The study provides essential baseline information that strengthens conservation strategies, supports potential breeding programs, and enhances understanding of the species’ evolutionary patterns within tropical ecosystems.
Pelatihan Aplikasi Pemanfaatan Ektrak Buah Tembesu untuk Pembuatan Sabun Wajah Anti Jerawat pada Masyarakat Desa Pulau Kabal Zainal Fanani; Arum Setiawan; Febrian Hadinata; Amrillah Nugrasyah; Yadi Oktariansyah
Jurnal Medika: Medika Vol. 5 No. 1 (2026)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/g90ft538

Abstract

Desa Pulau Kabal, Kecamatan Indralaya Utara, Kabupaten Ogan Ilir memiliki potensi sumber daya lokal berupa kelapa dan buah tembesu yang belum dimanfaatkan secara optimal. Buah tembesu diketahui mengandung senyawa bioaktif, seperti asam ursolat, yang berpotensi sebagai antibakteri dan anti jerawat. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pengetahuan, keterampilan, dan kesadaran lingkungan masyarakat melalui pelatihan pemanfaatan ekstrak buah tembesu sebagai bahan aktif pembuatan sabun wajah berbasis minyak kelapa. Metode pelaksanaan meliputi penyuluhan, demonstrasi, praktik langsung, serta pendampingan berkelanjutan kepada kelompok pengajian Fatayat dan Muslimat Nahdlatul Ulama Desa Pulau Kabal. Evaluasi dilakukan melalui pengamatan keterampilan peserta, uji organoleptik sederhana, serta pengukuran pra dan pasca pelatihan terkait kesadaran lingkungan. Hasil kegiatan menunjukkan peningkatan kemampuan peserta dalam memproduksi sabun wajah herbal serta peningkatan kesadaran terhadap pengurangan limbah organik, pemanfaatan bahan lokal, dan pengembangan produk ramah lingkungan. Kegiatan ini berpotensi mendorong terbentuknya usaha mikro berbasis industri kreatif yang berkontribusi terhadap peningkatan kesejahteraan masyarakat secara berkelanjutan.
Alternative Feed Use in Poultry Chickens: Impacts on Feed Efficiency and Physiological Parameters—A Systematic Literature Review Oktariansyah, Yadi; Kamal, Mustafa
Journal of Natural Sciences Vol 7, No 1 (2026): Journal of Natural Sciences Maret
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v7i1.1110

Abstract

Feed cost and supply instability remain major constraints in poultry production, particularly in smallholder and semi-intensive systems where local chickens are commonly raised. Alternative feeds derived from local resources and agro-industrial by-products have been promoted to reduce reliance on commercial rations, yet evidence regarding their effects on feed efficiency and physiological stability remains inconsistent. This systematic literature review synthesized controlled feeding trials evaluating the effects of alternative feeds on feed conversion ratio (FCR), growth performance, and physiological parameters in poultry chickens. A PRISMA-guided search was conducted using Scopus, Web of Science, PubMed, and Google Scholar, and 20 eligible studies were included in the qualitative synthesis. Evidence was categorized into agro-industrial by-products, plant leaf meals, high-fiber ingredients, fermented feeds, animal-based alternative proteins, antinutrient-rich plants, enzyme-supported diets, hybrid feeding strategies, and layer-phase alternative feeding. Feed efficiency responses were highly context-dependent. Neutral or improved FCR and stable growth were more likely when alternative feeds were used at moderate inclusion levels and supported by fermentation, enzyme supplementation, and adequate micronutrient premixes. In contrast, high inclusion of fibrous or antinutrient-rich ingredients frequently reduced efficiency and increased the risk of metabolic stress. Hybrid feeding strategies produced the most consistent outcomes.
Similaritas dan Korelasi Tumbuhan Invasif pada Tegakan Eksotik di Kawasan Lindung di Kawasan Lindung PT Musi Hutan Persada, Sumatera Selatan Huda, Muhammad Komarul; Setiawan, Arum; Oktariansyah, Yadi; Yustian, Indra; Setiawan, Doni; Pragustiandi, Guntur; Pranoto, Aidil Fitra
Journal of Natural Sciences Vol 7, No 1 (2026): Journal of Natural Sciences Maret
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v7i1.1087

Abstract

Invasive alien plants pose a major threat to biodiversity, particularly in conservation areas embedded within industrial plantation forest landscapes dominated by exotic species. This study aimed to analyze the composition and dominance of invasive plants, community similarity, and their correlations with Acacia mangium and Eucalyptus pellita stands in the Protected Area of PT Musi Hutan Persada, South Sumatra. Vegetation analysis was conducted using a nested quadrat sampling method across four stand types (control, A. mangium-dominated, E. pellita-dominated, and mixed stands), with 60 purposively selected plots. Data were analyzed using the Important Value Index (INP), Jaccard similarity index, and Spearman correlation. The results identified 20 invasive plant species, with Eleusine indica as the most abundant. A. mangium and E. pellita exhibited the highest INP at the tree stratum. Similarity analysis indicated variation in species composition, with a tendency toward community homogenization in some locations (≥0.80). Correlation analysis revealed that A. mangium was positively associated with Imperata cylindrica and Chromolaena odorata, while E. pellita was associated with Clidemia hirta and Piper aduncum. These findings highlight the ecological role of exotic stands in shaping the distribution patterns of invasive plants.
Co-Authors Ali Amran Amrillah Nugrasyah Anita Desiani Ario Sucipto Artika Sri Wahyuni Arum Setiawan Arum Setiawan Ayu Safitri Bambang Suprihatin Cahyani, Riski Desitarani Doni Setiawan Elffisa Eriani Febrian Hadinata Ferta Liza Putri Harvianti, Yuniar Huda, Muhammad Komarul Indra Yustian Iqbar, Muhammad Jonatan Jonatan Laila Hanum Lonamonika Sinabutar Masito, Masito Muhammad Habiburrahman Muhammad Ikhsan Mustafa Kamal Nayla Khairani Nirwana, Rahma Julia Novira, Sandra Patricia, Margareth Pragustiandi, Guntur Pranoto, Aidil Fitra Putri, Cyntia Sabarani Ramadhani, Audya Rahma Sarah Angelica W. Simamora Sarno . Siti Rusdiana Puspa Dewi Slamet Prayogo Zainal Fanani