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INDONESIA
Jurnal Biologi Universitas Andalas
Published by Universitas Andalas
ISSN : -     EISSN : 23032162     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 13 No 01 (2025)" : 6 Documents clear
Perubahan Tutupan Hutan: Studi Kasus Sumatra Barat Afdhal, Taufiq; Wibisono, Hariyo Tabah; Aadrean, Aadrean
Jurnal Biologi Universitas Andalas Vol 13 No 01 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.13.01.08-13.2025

Abstract

The expansion of agricultural and plantation areas, and demands for improved accessibility, particularly on gentler slopes, has accelerated deforestation in West Sumatera. This study investigates changes in forest cover in West Sumatera over the period from 2000 to 2050, using two initial cover datasets from 2000 and 2015. We used driving variables, including elevation, slope, and roads, processed through the Change Modeller in IDRISI TerrSet. Modelling results indicate that forest cover changes are significantly influenced by topography, with gentler slopes experiencing faster rates of deforestation compared to steeper areas. Regions with flat land and easy access are particularly vulnerable to large-scale conversion for agricultural use, especially for palm oil plantations. The results underscore the interplay between infrastructure development and forest cover changes, highlighting the need for careful consideration of environmental impacts in planning and policy making. This study urges the policymakers to implement strategic spatial planning and land-use monitoring to mitigate impacts of deforestation to ensure forest sustainability in West Sumatera.
Species Distribution Modelling on Long-tailed Macaque (Macaca fascicularis) in Padang, West Sumatra Utami, Radila; Novarino, Wilson; Rizaldi, Rizaldi
Jurnal Biologi Universitas Andalas Vol 13 No 01 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.13.01.14-21.2025

Abstract

Human activity is a major factor in the decline of primate biodiversity, including long-tailed macaques, which thrive in varied habitats, even near human settlements. This overlap can lead to conflicts for both humans and macaques. The objective of this study is to determine the distribution of long-tailed macaques through direct observation and potential distribution based on habitat suitability modelling using MaxEnt. Six environmental variables were selected based on the ecological traits of long-tailed macaques, including forest cover, population density, distance to roads, distance to forests, distance to conservation areas, and land use type. Moreover, 32 coordinate points were identified in Padang for locating long-tailed macaque and modelled using MaxEnt. The results indicate that long-tailed macaques are primarily distributed in areas with forest cover but are close to anthropogenic activities. The modelling reveals that the habitat suitability for this species in Padang tends to be low to moderate. The environmental variables that exert the most significant influence on their distribution are distance to roads and forest cover (53.3% and 20.1% respectively). Consequently, areas with a higher potential of habitat suitability required particular attention to manage conflicts and populations to avoid potential negative impacts that could arise.
Komposisi dan Struktur Vegetasi Pohon pada Habitat Rafflesia arnoldii R.Br. di Kawasan Hutan Nagari Saniangbaka, Kabupaten Solok Chairul, Chairul; Najah, Muthiya Safinatun
Jurnal Biologi Universitas Andalas Vol 13 No 01 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.13.01.01-07.2025

Abstract

The research on the composition and structure of tree vegetation in the habitat of Rafflesia arnoldii R.Br. in the Saningbaka Forest area, X Koto Singkarak District, Solok Regency, was conducted from March to July 2024.The objective of this study was to ascertain the composition and structure of tree vegetation in the habitat of Rafflesia arnoldii. Vegetation analysis was performed using purposive sampling along a 50 x 20 m transect, with ten subplots measuring 10 x 10 m each. The results revealed a total of 49 individuals, 18 species, 14 genera, and 11 families were identified, with the dominant families being Urticaceae (34.7%) and Meliaceae (20.4%). Meanwhile, the Euphorbiaceae family (10.2%) was identified as the co-dominant family at this study location. The highest Importance Value Index (IVI) was found for the species Villebrunea rubescens (102.4%), while the lowest IVI was for Mallotus peltatus (5.79%). The diversity index at the study site was classified as moderate, with H' = 2.43. Two buds and six individual flowers of Rafflesia arnoldii were observed in the late blooming phase. The Tetrastigma species identified in the study area was T. leucostaphylum.
Daftar Awal Jenis Capung (Odonata) di Pulau Patotogat, Mentawai, melalui Metode Fotografi Muharani, Silvia; Yulita, Rahma; Nugraha, Fitra Arya Dwi; Satria, Rijal
Jurnal Biologi Universitas Andalas Vol 13 No 01 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.13.01.22-28.2025

Abstract

Penelitian ini bertujuan untuk menginventarisasi spesies capung (Odonata) di Pulau Patotogat, Mentawai, dengan menggunakan pendekatan fotografi. Sebanyak 6 spesies Odonata berhasil diidentifikasi, terdiri dari 5 spesies subordo Anisoptera (famili Libellulidae) dan 1 spesies subordo Zygoptera (famili Coenagrionidae). Spesies Teinobasis ruficollis dari subordo Zygoptera ditemukan dalam kategori Hampir Terancam (NT) menurut IUCN, yang menunjukkan perlunya tindakan konservasi. Penelitian ini menegaskan pentingnya Pulau Patotogat sebagai habitat unik bagi keanekaragaman hayati, serta urgensi untuk memperbarui data distribusi spesies ini untuk mendukung upaya konservasi. Metode fotografi yang digunakan efektif dalam mengumpulkan data tanpa mengganggu populasi spesies.
A Rapid Assessment: Insect Diversity Around the Stingless Bee Colony in Edufarm Universitas Andalas Ilmi, Miftahul; Henny Herwina; Dahelmi; Alponsin; Jasmi; Rusdimansyah
Jurnal Biologi Universitas Andalas Vol 13 No 01 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.13.01.29-35.2025

Abstract

Insects dominate the animal kingdom, comprising nearly 80% of all animal species, with around 250,000 species found in Indonesia. Among these, stingless bees are a diverse group with over 60 genera. Some stingless bees are cultivated in meliponiculture, practiced around homes and plantations. This study aimed to assess insect diversity near stingless bee colonies in the Education Farm (Edufarm), Universitas Andalas, through a rapid assessment conducted over two days in May 2024. A transect was established with three U-shaped sub-transects surrounding a stingless bee colony. The modify quadra protocol sampling (honey bait traps, leaf litter, soil cores, and hand collecting) was used around the colony. The study identified 1153 individuals from 6 orders, 9 families, and 15 species of insects, with Formicidae from Hymenoptera being the most dominant. This research offers valuable insights into insect diversity around stingless bee colonies at Edufarm and can inform better management strategies for stingless bees and the ecological structure of surrounding environments.
Evaluating Species Distribution Models (SDMs) for Efficient and Accurate Detection of Wild Species Across Landscapes Taufiq, Ahmad; Nurainas
Jurnal Biologi Universitas Andalas Vol 13 No 01 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.13.01.36-42.2025

Abstract

Species distribution models (SDMs) have been used across continents and taxonomic groups to guide field surveys and improve detection efficiency. In several studies, SDM-guided approaches achieved Area Under the Curve values between 0.90 and 0.976, with some reports documenting the discovery of new populations (e.g., 4 of 8 species or 5-16 additional sites) and time savings of up to 70% compared with unsystematic surveys. One study noted that Gaussian Process models operated 70 times faster than an alternative estimation method. Additional work indicates that SDMs narrow survey areas and enhance cost effectiveness, particularly when environmental layers and robust occurrence data support model development. These studies show that, when applied with methods such as Maxent and ensemble approaches, SDMs offer a viable alternative to direct field surveys for locating wild species over large areas. Limitations arise when data quality or model specification is insufficient, suggesting that careful design remains essential for reliable outcomes.

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