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Muhammad Rizaldi Trias Jaya Putra Nurdin
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INDONESIA
Indonesian Journal of Ecology and Conservation
Published by Universitas Sulawesi Barat
ISSN : -     EISSN : 30475392     DOI : https://doi.org/10.31605/ijec
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science
Indonesian Journal of Ecology and Conservation is a journal published in 2024 by the Center for Ecology, Conservation, and Ethnobiology Studies at the Universitas Sulawesi Barat, Indonesia. The establishment of this journal is driven by the importance of recognizing the diversity of flora and fauna in Indonesia, particularly on the island of Sulawesi. The geographical uniqueness of this island, separated from the continents of Asia and Australia, has allowed for the evolution of different species and is a primary cause of its biodiversity richness. This aspect is certainly attractive for research by various groups, and the Indonesian Journal of Ecology and Conservation serves as an appropriate platform for accessing and publishing research findings in the fields of ecology, conservation, molecular, systematic, and evolutionary studies
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ekologi
Articles 25 Documents
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Diversity and Distribution of Bunomys (Rodentia: Muridae) Along an Elevational Gradient in Gandang Dewata National Park Yusuf Sama; Muhammad Rizaldi Trias Jaya Putra Nurdin; Alexander Kurniawan Sariyanto Putera; Nurmiati; Maipa Dia Pati
Indonesian Journal of Ecology and Conservation Vol 2 No 2 (2025): Tropical Ecology and Biodiversity
Publisher : Center for Ecology, Conservation and Ethnobiology Studies, Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/ijec.v2i2.6313

Abstract

This study aimed to determine the distribution and diversity of the genus Bunomys in Gandang Dewata National Park. Fieldwork was conducted in July 2025 using live traps placed across several habitat types and different elevation ranges. Data collection was carried out by installing traps along transect lines at locations suspected to be rat movement pathways. The collected data were analyzed descriptively to identify species and describe their distribution patterns. The results revealed the presence of three species within the genus Bunomys: Bunomys penitus, Bunomys andrewsi, and Bunomys torajae. Each species exhibited different habitat preferences. A total of 16 individuals of B. penitus were found at mid-elevations with primary forest vegetation at elevations ranging from 1,588 to 1,912 m above sea level. Nineteen individuals of B. andrewsi were recorded in secondary forest habitats at elevations between 1,509 and 2,154 m above sea level. Meanwhile, B. torajae was represented by eight individuals found in high mountain areas at elevations of 2,561–2,596 m above sea level. These findings provide important information on the distribution of the genus Bunomys in Sulawesi and highlight the role of Gandang Dewata National Park as an important habitat for endemic wildlife. This study also contributes to enriching the limited biodiversity data on small mammals in the mountainous regions of Sulawesi. Further studies focusing on ecological aspects, behavior, and genetic analysis are recommended to deepen the understanding of population dynamics and phylogenetic relationships within the genus Bunomys
Species Composition and Dominance of Insect Pests on Cocoa (Theobroma cacao L.) in Mamasa Regency, West Sulawesi Rosalianti, Alde Lisa; Makerra, Andi Dewi Rizka Ainulia; Amaliah, Rezeki
Indonesian Journal of Ecology and Conservation Vol 3 No 1 (2026): Ecology and Biodiversity Conservation
Publisher : Center for Ecology, Conservation and Ethnobiology Studies, Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/ijec.v3i1.6315

Abstract

Cocoa (Theobroma cacao L.) is one of the most important plantation commodities that contributes significantly to local economic development, particularly in West Sulawesi. However, cocoa productivity often declines due to insect pest attacks. This study aimed to determine the species composition and dominance of insect pests attacking cocoa plants in Rembak Hamlet, Bambang Buda Village, East Rantebulahan District, Mamasa Regency. This research employed a descriptive exploratory method with purposive sampling applied to three cocoa plantation sites, each divided into three subunits measuring 10 m × 5 m. Insect pests were collected using two techniques: direct sampling and soap water traps. The results revealed the presence of ten insect pest species attacking cocoa plants, namely Helopeltis spp., Aulacophora nigripennis, Hyposidra talaca, Planococcus minor, Conopomorpha cramerella, Dolichoderus thoracicus, Adoretus spp., Zeuzera coffeae, Pheidole megacephala, and Camponotus spp. These pests attacked several plant parts, particularly fruits, leaves, and stems, causing various types of damage such as fruit spots, perforated leaves, and stem borings. The analysis indicated that Planococcus minor was the most dominant pest species found on cocoa plants in the study area. The presence of these insect pests may reduce both the quality and quantity of cocoa production. Therefore, appropriate pest management strategies are necessary to support the sustainability of cocoa production in the region
Local Community Perceptions of the Presence of Paucidentomys vermidax in Buffer Villages of Gandang Dewata National Park, West Sulawesi Demmaraya, Jhon; Nurdin, Muhammad Rizaldi Trias Jaya Putra; Hakim, Sufyan; Pati, Maipa Dia
Indonesian Journal of Ecology and Conservation Vol 2 No 1 (2025): Tropical Ecology and Biodiversity
Publisher : Center for Ecology, Conservation and Ethnobiology Studies, Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/ijec.v2i1.6318

Abstract

This study aimed to examine the presence of Paucidentomys vermidax and community perceptions in five buffer villages surrounding Gandang Dewata National Park. The research employed a quantitative approach using a survey method. Respondents were selected through cluster sampling, involving 66 individuals from various professions who have direct interaction with river ecosystems, including hunters, farmers, and local residents who frequently carry out activities around river areas. Data were collected through questionnaire-based interviews to obtain information on the frequency of species sightings and its utilization by the local community. The results showed that 60.61% of respondents had seen Paucidentomys vermidax, while 51.5% stated that the species is used as a food source by local communities. The level of community knowledge about this species is influenced by their proximity to its natural habitat and by activities closely related to river environments, such as farming and hunting. These findings indicate that the presence of P. vermidax is still recognized by communities living in the buffer areas of Gandang Dewata National Park and reflects the relationship between local communities and endemic fauna diversity in the region. This study provides preliminary information on the presence of Paucidentomys vermidax in the buffer zones of Gandang Dewata National Park and highlights the importance of considering local knowledge and community perceptions in conservation efforts for endemic species in Sulawesi
Diversity and Spatial Distribution of Dung Beetles (Coleoptera: Scarabaeidae) in Two Habitat Types in West Sulawesi Suparman, Suparman; Nurdin, Muhammad Rizaldi Trias Jaya Putra; Fausan, Muhammad Mifta
Indonesian Journal of Ecology and Conservation Vol 1 No 2 (2024): Flora and Fauna Conservation
Publisher : Center for Ecology, Conservation and Ethnobiology Studies, Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/ijec.v1i2.6319

Abstract

Research on the diversity and spatial distribution of dung beetles in West Sulawesi remains limited, particularly across different habitat types. Dung beetles play important ecological roles as decomposers and bioindicators of environmental conditions. This study aimed to analyze the diversity and spatial distribution of dung beetles and their relationship with environmental parameters in two contrasting habitats: the montane forest of Gandang Dewata National Park, Mamasa Regency, and the lowland area of Baruga Barat, Majene Regency. Sampling was conducted using random plot sampling with flight intercept traps and pitfall traps. Environmental parameters measured included air temperature, humidity, light intensity, soil pH, and soil moisture. Data were analyzed using the Shannon–Wiener diversity index, dominance index, evenness index, similarity index, Morisita index, and Principal Component Analysis (PCA). A total of 66 individuals representing 10 species from two families and three genera were recorded. Eight species were found in Gandang Dewata National Park and four in Baruga Barat. The overall diversity index was moderate (H' = 1.549). The low similarity index (33%) indicates differences in species composition, while the Morisita index shows a clustered distribution pattern influenced by habitat conditions
Diversity and Community Structure of Ants (Formicidae) in Residential Ecosystems Indrawan, Indrawan; Nurdin, Muhammad Rizaldi Trias Jaya Putra; Ariandi, Ariandi
Indonesian Journal of Ecology and Conservation Vol 1 No 2 (2024): Flora and Fauna Conservation
Publisher : Center for Ecology, Conservation and Ethnobiology Studies, Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/ijec.v1i2.6325

Abstract

Ants (Formicidae) are a group of insects that play an important role in maintaining ecosystem balance and are often used as bioindicators of environmental conditions. However, information on ant diversity in residential ecosystems in West Sulawesi remains limited. This study aimed to analyze the diversity and community structure of ants and their relationship with environmental parameters in residential ecosystems in Labuang Parabaya Hamlet, Onang Village, Majene Regency. Sampling was conducted using pitfall traps and hand collecting methods in two habitat types, namely household gardens and residential surroundings. Data were analyzed using the Shannon–Wiener diversity index (H’), evenness index (E), dominance index (C), and correlation analysis with environmental parameters. The results showed that the ant community consisted of four species with a total of 106 individuals, with Solenopsis invicta being the most abundant species. The diversity index was categorized as moderate (H’ = 1.16), with high evenness (E = 0.84) and low dominance (C = 0.34). Among the environmental parameters measured, soil pH and air humidity showed the strongest influence on ant diversity, whereas light intensity had a relatively lower effect. These findings indicate that the structure of ant communities in residential ecosystems is influenced by habitat conditions and environmental factors.
Diversity and Potential of Nitrogen-Fixing Rhizosphere Bacteria Associated with Foxtail Millet (Setaria italica L.) as Candidates for Biofertilizers in Sustainable Agriculture Yusril, Yusril; Muis, Nurmuliayanti; Wahid, Masyitha; Sari, Arlinda Puspita
Indonesian Journal of Ecology and Conservation Vol 1 No 2 (2024): Flora and Fauna Conservation
Publisher : Center for Ecology, Conservation and Ethnobiology Studies, Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/ijec.v1i2.6327

Abstract

Foxtail millet (Setaria italica L.) is a potential cereal crop that can be developed as an alternative food source. Rhizosphere microorganisms, particularly nitrogen-fixing bacteria, play an important role in improving soil fertility through nitrogen fixation and the production of plant growth hormones. However, information regarding the potential of rhizosphere bacteria associated with foxtail millet in West Sulawesi remains limited. This study aimed to isolate, select, and identify nitrogen-fixing rhizosphere bacteria associated with foxtail millet and to evaluate their potential as biofertilizer candidates. Bacterial isolation was conducted using a serial dilution method on selective Jensen medium, followed by colony morphology characterization and Gram staining. Selected isolates were further tested for their nitrogen-fixing ability and their capacity to produce plant growth hormones, including indole-3-acetic acid (IAA) and gibberellin (GA₃). Molecular identification was performed using 16S rRNA gene analysis. The results showed that 31 bacterial isolates were successfully obtained from the rhizosphere of foxtail millet, of which 10 isolates were selected based on morphological characteristics. Five isolates demonstrated nitrogen-fixing ability, while three of the best isolates were capable of producing both IAA and gibberellin. Molecular analysis revealed that the best-performing isolates showed high similarity to Bacillus toyonensis and Bacillus cereus. These findings indicate that rhizosphere bacteria associated with foxtail millet have significant potential as biofertilizer candidates to support sustainable agriculture
Bioprospecting of Potential Probiotic Lactic Acid Bacteria from the Gut of Native Chickens (Gallus domesticus) in the Antang Landfill Ecosystem Khaerunnisa, Khaerunnisa; Dwyana, Zaraswati; Sulfahri, Sulfahri
Indonesian Journal of Ecology and Conservation Vol 1 No 2 (2024): Flora and Fauna Conservation
Publisher : Center for Ecology, Conservation and Ethnobiology Studies, Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/ijec.v1i2.6332

Abstract

The use of antibiotics as antibiotic growth promoters (AGPs) in the poultry industry has raised concerns due to increasing bacterial resistance and the potential presence of antibiotic residues in animal products. Consequently, probiotics have been widely explored as a safer alternative to improve livestock health and productivity. Lactic acid bacteria (LAB) are among the most commonly used probiotic microorganisms because they can maintain intestinal microbial balance and produce antimicrobial compounds that inhibit pathogenic bacteria. However, information regarding LAB derived from the intestines of native chickens inhabiting unique ecosystems such as landfill sites remains limited. This study aimed to bioprospect potential probiotic LAB from the intestines of native chickens (Gallus domesticus) living in the Antang landfill ecosystem and evaluate their application in broiler chickens. LAB were isolated using MRSA medium enriched with CaCO₃, followed by morphological identification, Gram staining, and probiotic characterization through acid tolerance, bile salt tolerance, and antagonistic activity tests against Escherichia coli and Salmonella typhi. Eight LAB isolates were obtained, of which five showed promising probiotic potential. The best isolate demonstrated strong antibacterial activity and improved body weight gain and feed efficiency in broiler chickens
Species Diversity and Distribution Patterns of Epiphytic Orchids (Orchidaceae) in Bukit Pasapa Kurrak, Mamasa, West Sulawesi, Indonesia Hasgun, Hasgun; Muis, Nurmuliayanti; Yunus, Muh Rizal Kurniawan
Indonesian Journal of Ecology and Conservation Vol 2 No 1 (2025): Tropical Ecology and Biodiversity
Publisher : Center for Ecology, Conservation and Ethnobiology Studies, Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/ijec.v2i1.6334

Abstract

Biodiversity refers to the variety of living organisms, encompassing genetic, species, and ecosystem diversity within a particular area. Epiphytic orchids are orchids that grow on other plants but are not parasitic, as they only attach to the trunks, branches, or twigs of living or dead trees without deriving nutrients directly from their hosts. This study aimed to analyze the diversity and distribution patterns of epiphytic orchid species in Bukit Pasapa Kurrak and to explore their implementation as a biological learning resource. This research employed a quantitative approach using an exploratory survey method. Sampling was conducted using a purposive sampling technique. The collected data were analyzed by calculating several ecological indices, including the Important Value Index (IVI), Shannon–Wiener diversity index (H’), Simpson dominance index (C), evenness index (E), and Morisita’s index of dispersion (Id). The results showed that the diversity of epiphytic orchid species in Bukit Pasapa Kurrak was categorized as moderate, with a Shannon–Wiener diversity index of H’ = 1.66. The distribution pattern of epiphytic orchids in the study area was classified as random, with a Morisita index (Ip) of 0.04. Furthermore, validation results from two expert validators indicated that the developed learning resource was highly valid and feasible to implement as a biology learning resource.
Diversity and Phosphate-Solubilizing Potential of Rhizosphere Bacteria Associated with Foxtail Millet (Setaria italica L.) Samrawati Samrawati; Nurmuliayanti Muis; Sainab Sainab
Indonesian Journal of Ecology and Conservation Vol 2 No 2 (2025): Tropical Ecology and Biodiversity
Publisher : Center for Ecology, Conservation and Ethnobiology Studies, Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/ijec.v2i2.6336

Abstract

Foxtail millet (Setaria italica L.) is a cereal crop that can adapt to marginal environments; however, its growth is often limited by low phosphorus availability in the soil. Phosphate-solubilizing bacteria (PSB) in the rhizosphere play an important role in increasing phosphorus availability and promoting plant growth. This study aimed to isolate and screen phosphate-solubilizing bacteria associated with the rhizosphere of foxtail millet and evaluate their potential as plant growth-promoting rhizobacteria. Soil samples were collected from the rhizosphere and subjected to serial dilution followed by bacterial isolation on Nutrient Agar medium. Screening of phosphate-solubilizing activity was conducted using Pikovskaya medium by observing the formation of clear zones around bacterial colonies and calculating the solubilization index. Morphological characterization and Gram staining were also performed. The results showed that several isolates were capable of solubilizing phosphate with moderate solubilization indices. The colonies generally exhibited circular shapes, entire to undulate margins, convex elevation, and milky white coloration. Gram staining indicated the presence of both Gram-positive and Gram-negative bacteria. These findings suggest that rhizosphere bacteria associated with foxtail millet have potential as plant growth-promoting rhizobacteria.
Species Diversity and Feeding Guilds of Birds as Potential Resources for Birdwatching Ecotourism in Napabale Lake, Southeast Sulawesi Jabarudin, La Ode Muhammad; Amirullah, Amirullah; Karya, Adi
Indonesian Journal of Ecology and Conservation Vol 3 No 1 (2026): Ecology and Biodiversity Conservation
Publisher : Center for Ecology, Conservation and Ethnobiology Studies, Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/ijec.v3i1.6345

Abstract

The Napabale Lake Tourism Area in Muna Regency, Southeast Sulawesi, possesses a unique ecosystem formed by the interaction between the lake and marine environments, supported by diverse vegetation that provides habitat and food resources for various bird species. Bird diversity across different habitats is important to study in order to understand community structure and its ecological potential. This study aims to identify bird species diversity and the composition of feeding guilds within the Napabale Lake ecosystem as a basis for ecological information and the potential development of birdwatching-based ecotourism. The study was conducted using the point-count method across three ecosystem types: lowland forest, lake riparian, and coastal areas. Observations were conducted in the morning (06:00–08:30 WITA) and afternoon (15:00–17:30 WITA), with three repetitions in each ecosystem over nine days of observation. Data were analyzed using the Shannon–Wiener diversity index and Non-Metric Multidimensional Scaling (nMDS) ordination analysis with the Bray–Curtis index. The results showed that a total of 696 individual birds were recorded, comprising 30 species from 7 orders. The highest number of individuals was found in the lake riparian ecosystem (293), followed by lowland forest (267) and coastal areas (136). The highest diversity index value was observed in the lowland forest ecosystem (H’ = 2.52), followed by the lake riparian (H’ = 2.51), and the lowest in the coastal ecosystem (H’ = 2.46). The composition of feeding guilds was dominated by insectivores (31%) and omnivores (24%). The nMDS results indicated overlap in bird communities across ecosystems, suggesting flexible habitat use. Habitat diversity in Napabale Lake plays an important role in maintaining the stability of the bird community and has potential for development as birdwatching ecotourism.

Page 2 of 3 | Total Record : 25

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