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Dominggus Rumahlatu
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Program Studi Pendidikan Biologi Pascasarjana, Universitas Pattimura Jl. Dr. Tamaela, Kampus PGSD, Ambon, 97114, Maluku, Indonesia
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INDONESIA
BIOEDUPAT: Pattimura Journal of Biology and Learning
Published by Universitas Pattimura
ISSN : -     EISSN : 27754472     DOI : https://doi.org/10.30598/bioedupat.v1.i2.y2021
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Journal of Bioedupat is an open access, peer-reviewed journal dedicated to the publication of novel research concerned with the advancement of tropical biology studies in the Southeast Asia Region. We invite authors to submit articles in the fields It publishes original scientific work related to a diverse range of fields in tropical biodiversity, biology education, biology, microbiology, zoology, , and biotechnology. The journal invites research articles, short communication, and reviews in biology and biology education, in these following subjects: Descriptive and analytical studies of genetic, species, and community diversity Ecological and conservation studies Utilisation of tropical organisms in biotechnology Novel methods in studying biology Etnobotany and etnozoology Bioinformatics.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 63 Documents
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Critical Analysis and Performance Optimization of Waste Management Facilities in Pontianak City Nur, Maulana; Nur, Syafrial; Nawawi, Nawawi
BIOEDUPAT: Pattimura Journal of Biology and Learning Vol 5 No 2 (2025): Bioedupat : Pattimura Journal of Biology and Learning
Publisher : Program Studi Pendidikan Biologi, Pascasarjana, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/bioedupat.v5.i2.pp345-350

Abstract

The rapid population and economic growth in Pontianak City have significantly increased waste generation, yet the capacity of existing waste management infrastructure remains insufficient. This study evaluates the facility requirements necessary for achieving the national waste reduction target of 30% by 2025, as stipulated in Presidential Decree No. 97 of 2017. Utilizing secondary data from SIPSN, the Environmental and Forestry Office, and the Central Statistics Agency, a simple linear regression model was employed to project waste generation from 2023–2025 using SPSS version 22. The results indicate a strong correlation between population growth and waste generation (R² = 0.914), with projected waste reaching 134,606 tons by 2025. A 30% reduction would require the diversion of 40,381 tons. Simulation analysis highlights the need for expanding TPS3R and Waste Bank Units, as well as optimizing current facility capacity. This study recommends strategic investment in infrastructure and operational fleets to meet the 2025 waste reduction target.
Growth Performance of White Snapper (Lates calcarifer) With Different Stocking Density in Hapa at Hatchery Laboratory Tual State Fisheries Polytechnic Sahusilawane, Helena Afia; Beruatjaan, Mariana Y; Erbabley, Nally Y G F; Metengun, Jakomina; Kilmanun, Juliana E
BIOEDUPAT: Pattimura Journal of Biology and Learning Vol 5 No 2 (2025): Bioedupat : Pattimura Journal of Biology and Learning
Publisher : Program Studi Pendidikan Biologi, Pascasarjana, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/bioedupat.v5.i2.pp351-359

Abstract

Maluku are known as the national fish barn and the largest fishing centre in Indonesia. One type of fish caught in Maluku is white snapper (Lates calcarifer), which is in high demand in the market. Therefore, intensification of aquaculture is essential. Determining factors for successful aquaculture include the stocking density of fry in aquaculture containers. The objective of this study was to determine effect of the stocking density on growth performance of white snapper cultivated in hapa. This observation took place over a month at the Hatchery Laboratory of the Aquaculture Technology Study Programme at the Tual State Fisheries Polytechnic. This study was used a completely randomised factorial design consisting of stocking densities of 10 fish/hapa, 15 fish/hapa, and 20 fish per hapa. Each treatment was repeated three times. The white snapper fish were obtained from the Tual Marine Cultivation Centre with a uniform size of 5-6 cm. The fish were cultivated in 40x40x40 cm hapa in fibre tanks using the RAS method and were fed commercial feed ad libitum. The growth parameters measured were length, weight, and growth rate of the fish. The data were analysed using one-way analysis of variance and followed by the DMRT test in the SPSS 22.0 program. The results showed that stocking density had a significant effect on the growth of white snapper during cultivation. The stocking density treatment of 10 fish/hapa had higher length and weight measurements each week of observation compared to other treatments. Thus, the lower the stocking density of white snapper in the hapa, the higher its growth. To achieve optimal growth in aquaculture, it is recommended to use a low stocking density of fish.
Actinobacteria from Mangrove Rhizosphere as a Source of Biocontrol Agents to Support Sustainable Agriculture Sakaroni, Rubiyatna; Kusuma, Anindita Suliya Hangesti Mandra; Adawiyah, Marosa Robi'atul
BIOEDUPAT: Pattimura Journal of Biology and Learning Vol 5 No 2 (2025): Bioedupat : Pattimura Journal of Biology and Learning
Publisher : Program Studi Pendidikan Biologi, Pascasarjana, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/bioedupat.v5.i2.pp360-369

Abstract

Mangrove ecosystems harbor diverse microorganisms with important ecological and biotechnological roles. Actinobacteria, in particular, are well known as producers of bioactive compounds and potential biocontrol agents against plant pathogens, making their exploration relevant for sustainable agriculture. This study aimed to isolate and characterize Actinobacteria from the rhizosphere of mangroves in Bagek Kembar, West Lombok, and to evaluate their antagonistic potential against Ralstonia solanaciearum, plant disease agent. Soil samples were collected using a quadrant method, while environmental parameters such as pH, temperature, humidity, and salinity were measured to assess habitat suitability. Actinobacteria were isolated and identified through Gram staining and morphological observation, their abundance was calculated using the Total Plate Count method, and antagonistic activity was tested using the agar well diffusion assay. The results showed that soil pH was relatively neutral, with temperature and salinity suitable for Actinobacteria growth. Five isolates (ACT R1–R5) were obtained, all Gram-positive with filamentous hyphae-like morphology. Total Plate Count analysis indicated high abundance (3.2 × 105), although the diversity of isolates recovered was relatively low. Antagonistic assays revealed that ACT R2 and ACT R4 moderate inhibitory effect, and ACT R1, ACT R3, and ACT R5 weak. Overall, these findings demonstrate that mangrove rhizospheres in West Lombok are a promising source of Actinobacteria with significant potential as environmentally friendly biocontrol agents

Page 7 of 7 | Total Record : 63

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