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Advances in Tropical Biodiversity and Environmental Sciences
Published by Universitas Udayana
ISSN : 25496980     EISSN : 26220628     DOI : https://doi.org/10.24843/ATBES.2023.v07.i02.p01
Core Subject : Health, Science, Education, Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Environmental Science Immunology & microbiology Medicine & Pharmacology Veterinary Other
The scope of the journal covers scientific and technological aspects from all fields that have general relevance to tropical biodiversity and environmental sciences, including investigations on tropical biodiversity, systematics and taxonomy, terrestrial and aquatic ecology, wildlife management and control, ethnobotany and ethnozoology, tropical plant and animal cultivation, general veterinary, natural product chemistry, ecotourism, environmental remediation and management, and geographic information systems (GIS), remote sensing, and other modeling applications for environmental studies.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 10 Documents
 1 
Search results for , issue "Vol. 9 No. 2 (2025): June 2025" : 10 Documents clear
Cadmium Contents in Water and Tilapia (Oreochromis niloticus) in Telaga Tunjung Dam, Tabanan, Bali Jozze Brendo Simanjuntak; Alfi Hermawati Waskita Sari; Ayu Putu Wiweka Krisna Dewi
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 2 (2025): June 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i02.p06

Abstract

Agricultural activities around the Telaga Tunjung Dam also have the potential for the entry of heavy metal cadmium (Cd) into the water and accumulate in aquatic organisms, especially in fish. The presence of cadmium (Cd) in water and fish that exceeds the limit can have a negative impact on human health. The purpose of this study was to determine the cadmium (Cd) content in water and tilapia that had been caught in the Telaga Tunjung Dam. The study was conducted at the Telaga Tunjung Dam from February to March 2023. The research method used was a comparative descriptive method. The highest cadmium (Cd) content in water was detected at station IV, which was 0.078 mg/l. Cadmium (Cd) content was also detected in tilapia liver at 1.043 mg/kg, and the highest cadmium (Cd) content was detected in tilapia meat at 1.541 mg/kg. These values ​​have exceeded the quality standard threshold set by Bali Governor Regulation No. 8 of 2007 (0.01 mg/l), and SNI 7387:2009 for the fish and processed fish category (0.1 mg/kg). Meanwhile, the results of measurements of dissolved oxygen (DO), temperature and pH are still optimal and support the life of aquatic organisms.
Isolation and Antibiotic Resistance Profile of Klebsiella spp. from the Gastrointestinal Tract of Broiler Chickens in Poultry Farms in Bali Yeocelin Meida Utami; Putu Henrywaesa Sudipa; I Gusti Ketut Suarjana; I Nengah Kerta Besung; Hapsari Mahatmi; I Gede Putu Anggita Raka Saputra; Arine Rayka Khaniya
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 2 (2025): June 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i02.p02

Abstract

The poultry sector in Bali has experienced substantial growth, accompanied by a notable increase in broiler chicken populations. Information on Klebsiella spp. outbreaks in Bali has not yet been studied, despite the many potential infectious diseases that may affect broiler chickens on a large scale. Klebsiella spp. is an opportunistic pathogen that can induce severe respiratory disease in poultry, carrying a potential risk of zoonotic transmission. Furthermore, the increasing incidence of antibiotic resistance among Klebsiella strains poses a critical challenge to effective therapeutic interventions. This study was conducted to isolate and identify Klebsiella spp. from the gastrointestinal tract of broiler chickens in commercial farms across Bali, and to assess the antimicrobial resistance profiles of the isolates against multiple antibiotic agents. A cross-sectional study with a total of 25 cloacal swabs was conducted, and the swabs were subjected to microbiological analysis. Isolation was performed using selective MacConkey Agar (MCA), followed by Gram staining, biochemical identification, and antibiotic susceptibility testing through the Kirby-Bauer disk diffusion method. Two out of 25 (8%) samples were positively identified as Klebsiella spp. All of these positive isolates showed complete resistance to ampicillin, sulfamethoxazole, erythromycin, ciprofloxacin, and tetracycline. Additionally, the positive isolates also exhibited intermediate resistance against kanamycin, while 50% of the isolates demonstrated susceptibility to chloramphenicol. These findings confirm the presence of multidrug-resistant (MDR) strains among the isolates examined. The outcomes of this research emphasize the urgent need for a rigorous study to identify potential outbreaks caused by Klebsiella spp., throughout commercial farms in Bali and stringent monitoring and regulation of antibiotic usage within the poultry industry to mitigate the proliferation of antimicrobial resistance, thereby safeguarding animal health and preventing potential risks to public health.
Important Value Index (IVI) of Soil Macrofauna in the Traditional Oil Mining Area of Wonocolo Tria Agustining Tyas; Laily Agustina Rahmawati; Solikhati Indah Purwaningrum
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 2 (2025): June 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i02.p01

Abstract

The Wonocolo traditional oil mining area has oil exploitation activities that have the potential to affect the existence and diversity of soil macrofauna. Soil macrofauna play an essential role in maintaining the balance of the soil ecosystem through the processes of organic matter decomposition, nutrient cycling, and soil structure formation. This study aims to evaluate the Importance Value Index (IVI) of soil macrofauna in the Wonocolo traditional oil mining area and analyze the effect of mining activities on the macrofauna community. The research method employed is a quantitative descriptive approach, utilizing a stratified random sampling technique based on the density of oil wells per hectare. Data were collected through field observations, measurements of soil physical and chemical parameters (pH and temperature), and identification and quantification of soil macrofauna. Data analysis was conducted by calculating the IVI based on the density, frequency of presence, and dominance of each species. The results showed that traditional oil mining activities affected the composition and dominance of soil macrofauna. Several species had high IVI values, indicating their essential role in the soil ecosystem, while other species experienced population declines due to environmental changes. This study concludes that oil mining activities impact the existence and diversity of soil macrofauna; therefore, environmental management efforts are necessary to maintain the balance of the soil ecosystem in the area.
Analysis of Sulfate and Cadmium Distribution in Groundwater in Wonocolo Traditional Oil Mining Area, Bojonegoro Regency Santi Amanda Tiara Putri; Nindy Callista Elvania; Heri Mulyanti
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 2 (2025): June 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i02.p03

Abstract

Wonocolo Village in Bojonegoro Regency is one of the traditional oil mining areas that still contains old Dutch oil wells. The presence of these wells has the potential to affect groundwater quality. Petroleum that contaminates the soil can seep into groundwater, posing a serious threat to areas that rely on it as a source of clean water. This study aims to evaluate groundwater parameters, including temperature, pH, cadmium, and sulfate, by the standards set by the Indonesian Ministry of Health Regulation No. 32 of 2017, specifically regarding hygiene, sanitation, and public baths. Sampling was conducted using a purposive sampling method at 14 points. Data analysis was performed using the inverse distance weighted (IDW) interpolation method. The results showed that in the densely populated southern part of the study area, the temperature at sampling point SG 13 reached 35°C, and cadmium levels across all samples ranged from 0.059 to 0.156 mg/L, exceeding the permitted quality standards. In contrast, pH and sulfate values met the quality standards set by Permenkes No. 32 of 2017. Therefore, efforts are necessary to reduce cadmium levels in the groundwater of Wonocolo Village, Bojonegoro Regency.
Analysis of Tourism Suitability and Carrying Capacity of Mangrove Areas in Sumberkima Village, Buleleng Regency, Bali Muhammad Fikri Deliansyah; Dwi Budi Wiyanto; Gede Surya Indrawan
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 2 (2025): June 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i02.p09

Abstract

The mangrove forests in Sumberkima Village, Buleleng Regency, Bali, hold significant potential for development as eco-friendly tourism destinations. This study aims to analyze the mangrove health index and the suitability of the mangrove area as an ecotourism destination, and to determine the area's carrying capacity for tourism activities. The methodology involves analyzing ecotourism parameters, including mangrove thickness and density, mangrove species, tidal patterns, and the presence of biotic objects. Primary data were collected through field observations, while secondary data were obtained from official sources. The study results indicate that the mangrove area in Sumberkima Village has a mangrove health index ranging from 34.89% to 51.18%, categorized as moderate. The mangrove tourism suitability index reveals that one observation station falls into the "suitable" category, with an index of 2.12, while the other two stations are classified as "not suitable." The carrying capacity for mangrove trekking activities is estimated at 223 visitors per day. This study concludes that the mangrove area in Sumberkima Village has potential for development as an ecotourism area. However, efforts to improve the quality of the mangrove ecosystem and tourism infrastructure are necessary to optimize the area's potential in a sustainable manner.
Morphological and Anatomical Development of True Mangrove Species Generative Organs in Ngurah Rai Forest Park, Bali Rai Janaki Maharani; I Made Saka Wijaya; Citra Gilang Qur'ani
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 2 (2025): June 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i02.p08

Abstract

Plant phenology is the study of the growth time of plants that occurs repeatedly every year. In the process, growth is accompanied by development at both the cellular and tissue levels of differentiated plants, resulting in the formation of organs with specific functions as a form of environmental adaptation. The lack of mangrove reproduction data motivates this study to investigate the development and differentiation of generative organs in several species of true mangroves within Ngurah Rai Forest Park. Sampling was conducted in the Ngurah Rai Forest Park, while observations were made in the Plant Structure and Development Laboratory at Udayana University. The research method involved observing and comparing changes in the morphological and anatomical structures of the species Avicennia marina, Sonneratia alba, and Xylocarpus granatum. The results found that all species have all the flower’s main parts (stamen, pistil, petal, sepal), with some species having nectar around the receptacle to attract pollinators. The fruit development in X. granatum formed without any of the flower parts, while in S. alba, it clearly involves the calyx and stylus as its main parts of fruit, and A. marina only has a small calyx as part of the fruit. Based on the sprout characteristics, S. alba and X. granatum are classified as normal fruits, while A. marina has cryptoviviparous fruit. As for seeds, the endospermic seed was observed in S. alba and X. granatum, while A. marina has a non-endospermic seed with fully developed cotyledons.
Growth Patterns, Length-Weight Relationships, and Condition Factors of Bullet Tuna (Auxis rochei) from PPI Bias Lantang, Seraya Timur, Bali Sinar Jayadi; I Wayan Restu Nuarsa; Nyoman Dati Pertami
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 2 (2025): June 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i02.p07

Abstract

The growth pattern analysis using the length-weight relationship and condition factor of the bullet tuna (Auxis rochei) landed at PPI Bias Lantang, Seraya Timur, Bali, has not yet been determined. This study was conducted to determine the growth pattern using the length-weight relationship and the condition factor of bullet tuna. Fish samples were collected from March to May 2024, three times over three months, with intervals of three weeks. The methods used during the research were descriptive, quantitative, and simple random sampling. The bullet tuna fishing season starts in March and lasts until May. The fishing was conducted around the waters of the Bali-Lombok Strait. A total of 300 bullet tuna samples were obtained during the study. The length-weight relationship analysis revealed a positive allometric growth pattern for bullet tuna at PPI Bias Lantang, with a b value of 3.0308. The length-weight relationship shows a strong coefficient of determination with R² = 0.7468. The graph and equation illustrate the length-weight relationship for bullet tuna (Auxis rochei). The condition factor values of the bullet tuna ranged from 1.0048 to 1.0062, indicating that the body shape is relatively less slender.
Reproductive Aspects of Red Devil Fish (Amphilophus citrinellus) in Lake Batur Area, Bali Nico Mulia Subekti; I Wayan Darya Kartika; I Wayan Restu
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 2 (2025): June 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i02.p10

Abstract

The red devil fish (Amphilophus citrinellus) has a rapid breeding nature; its presence is a problem and detrimental to fish farmers. This study aims to examine the reproductive aspects of the fish, which can be seen from several elements: sex ratio, gonad maturity level, gonad maturity index, and fecundity. The research method used is descriptive quantitative. Samples of red devil fish (Amphilophus citrinellus) were collected using purposive sampling at three sampling station locations. We conducted the sampling three times, every two weeks. Each sample collection consisted of 15 fish per station. The equipment used was a gill net with a mesh size of 2.5 inches, a net length of 100 m, and a net height of 1 m. We then place the caught fish into a coolbox and observe them. The research results indicate an imbalance in the sex ratio of the red devil fish population in Lake Batur. The male red devil fish population is larger than the female population. Based on the gonad maturity level (TKG), male red devil fish are most commonly found at TKG III and II, each having 20 individuals, while females are dominated by TKG IV, which has 35 individuals. The average gonad maturity index (IKG) for male fish is 0.25–0.65, while for females, it is 1.58–2.32. The average fecundity of females ranges from 582 to 790 eggs.
Identification of Bacteria Isolated from Sea Urchin (Diadema setosum) Gonads Inhibiting Pseudomonas fluorescens and Staphylococcus aureus Growth Andini Maurent Dwiyanti; Helen Joan Lawalata; Iriani Setyawati; Anita Constanci Christine Tengker; Nonny Manampiring
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 2 (2025): June 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i02.p05

Abstract

Sea urchins are organisms that have antibacterial, antitumor, and anticancer abilities. The gonads can be used as a food source because they store 28 kinds of amino acids, vitamin B complex. This research aims to determine the type of bacteria from the gonads of sea urchins (Diadema setosum) which have inhibitory power against the growth of Pseudomonas fluorescens and Staphylococcus aureus bacteria. This research used an exploratory method which was analyzed descriptively, using stages in which sea urchin samples were taken and antibacterial tests against Pseudomonas fluorescens and Staphylococcus aureus from sea urchin gonads using the spread method. The media used for the process of isolating bacteria from the gonads of the sea urchin Diadema setosum is Nutrient Agar (NA) media. Isolate colonies that grew after incubation for 24 hours were separated based on differences in colony morphology. Morphological characterization of bacterial cells begins with gram staining. The diameter of the inhibition zone in the test bacteria shows different shapes. The research obtained 8 bacterial isolates, namely isolates B1-B8 which were gram-negative. The eight bacterial isolates have the potential as antibacterials against the test bacteria P. fluorescens and S. aureus. Isolates B1, B2, B3, B7 are similar to the genus Proteus, while isolates B4, B5, B6, and B8 are similar to the genus Citrobacter. The diameter of the largest inhibition zone in the P.fluorescens test bacteria, namely isolate B1, was 9.03 mm. Meanwhile, the smallest diameter for isolate B7 was 6.97 mm. In the S.aureus test bacteria, the largest diameter in isolate B1 was 11.09 mm. Meanwhile, the smallest diameter for isolate B4 was 8.57 mm.
Identification of Microplastics in Three Fish Species in Tondano Lake, Minahasa, Indonesia Fernando Andre Watung; Alva Sahiri Alexander Supit; Merry Triastuti Gosal
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 2 (2025): June 2025
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i02.p04

Abstract

Microplastic pollution is a significant threat to aquatic ecosystems and human health, particularly in Indonesia, a major contributor to plastic waste. This study investigated the presence and characteristics of microplastics in three commonly consumed fish species from Tondano Lake, North Sulawesi: mujair (Oreochromis mossambicus), payangka baru (Oxyeleotris marmorata), and payangka lama (Ophiocara poropechala). Analysis of gills and gastrointestinal tracts (GIT) from 11 fish samples revealed microplastic contamination in all species. Mujair exhibited the highest microplastic abundance, predominantly fragments in both gills and GIT. Payangka baru showed more fibers in the GIT and fragments in the gills, while payangka lama had more fibers in the GIT and fragments in the gills. A positive correlation was observed between fish body weight and microplastic accumulation in the GIT, but not the gills. The findings confirm microplastic contamination in Tondano Lake fish, highlighting the need for stricter waste management and further research on human health implications.

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