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All Journal Biodiversitas Journal of Biological Diversity
DIAN SISWANTO
Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Brawijaya. Jl. Veteran, Malang 65145, East Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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The diversity of indigenous and potential bacteria as bioremediator of palm oil mill secondary effluent (POMSE) by metagenomics assessment RIA KARNO; ENDANG ARISOESILANINGSIH; IRFAN MUSTAFA; DIAN SISWANTO
Biodiversitas Journal of Biological Diversity Vol. 25 No. 3 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250335

Abstract

Abstract. Karno R, Arisoesilaningsih E, Mustafa I, Siswanto D. 2024. The diversity of indigenous and potential bacteria as bioremediator of palm oil mill secondary effluent (POMSE) by metagenomics assessment. Biodiversitas 25: 1194-1200. This study aimed to identify the indigenous bacteria for potential bioremediation agents of palm oil mill secondary effluent (POMSE). Samples were obtained from the secondary pond of palm oil mill treatment. The bacterial diversity on the POMSE water samples was revealed by Next Generation Sequencing (NGS) of 16S rRNA gene amplicons. The results showed that the high abundance of bacteria phylum was Pseudomonadota or Proteobacteria (50%), Bacillota (31%), Bacteroidota (5%), and Thermotogae (3%). A photosynthetic sulfur bacterium, Allochromatium humboldtianum, was the most abundant species detected in the POMSE, with more than 8% of the total Operational Taxonomic Unit (OTU) detected. It was followed by Allochromatium phaeobacterium (6%), Allochromatium sp. (6%), and Macromonas bipunctata (6%). Meanwhile, the level of physicochemical parameters in POMSE were relatively high for several main parameters of the quality standard of palm oil industry waste, such as Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD). In contrast, oil and fat are low and meet the quality standards. The value of POMSE physicochemical parameters, including COD, BOD, and oil and fat, were 2,492.46, 852.96, and 6.20 mg/L, respectively. Metagenomic analysis showed that the bacterial community at POMSE was highly diverse. Nine dominant and codominant species found are Allochromatium humboldtianum, Allochromatium phaeobacterium, Allochromatium sp., Allochromatium vinosum, Macromonas bipunctata, Tepidibaculum saccharolyticum, Rhodocyclus purpureus, Comamonas nitrativorans, and Fervidobacterium riparium. Several indigenous bacterial species found in this research were bacteria that have potential as bioremediation agents for palm oil wastewater.
Vegetation diversity, structure and composition in nature-based recreation sites as a potential tourist attraction in Banyuwangi, Indonesia LAILA NUR HABIBAH; LUCHMAN HAKIM; EDRIANA PANGESTUTI; DIAN SISWANTO; BRIAN RAHARDI
Biodiversitas Journal of Biological Diversity Vol. 25 No. 9 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250950

Abstract

Abstract. Habibah LN, Hakim L, Pangestuti E, Siswanto D, Rahardi B. 2024. Vegetation diversity, structure and composition in nature-based recreation sites as a potential tourist attraction in Banyuwangi, Indonesia. Biodiversitas 25: 3273-3285. The presence of vegetation in nature-based tourism sites plays an important role in adding natural scenic beauty and creating comfortable local climates. However, the potential of vegetation in the recreation landscape for conservation and educational aspects is less studied. This research aims to identify vegetation diversity, structure and composition of plant species in nature-based tourism recreation sites in Banyuwangi District, East Java. Vegetation survey was conducted at 16 recreation sites, ranging from coastal to lower mountain ecosystems with varying management types from national parks, state and privately owned enterprises and community-private ownerships. Research shows that recreation sites contain diverse plant species that can support nature-based tourism attractions. The recreation sites in the national parks harbor native vegetation in, which it is important for biodiversity education through nature-based tourism programs. Fewer exotic plant species are found in nature-based recreation sites, especially in conservation areas. Conversely, nature-based recreation sites managed by community and private are dominated by exotic plant species. The existence of exotic plant species in nature-based recreation sites can add economic value by providing agrotourism activities, yet it requires special attention to protect the native habitats in those sites.
Mountain tourism impact on bird diversity along hiking trails of Mount Prau, Central Java, Indonesia MUHAMMAD ABDULLAH; LUCHMAN HAKIM; DIAN SISWANTO; DEWI LIESNOOR SETYOWATI
Biodiversitas Journal of Biological Diversity Vol. 25 No. 12 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d251205

Abstract

Abstract. Abdullah M, Hakim L, Siswanto D, Setyowati DL. 2024. Mountain tourism impact on bird diversity along hiking trails of Mount Prau, Central Java, Indonesia. Biodiversitas 25: 4690-4698. Hiking represents a significant dimension of mountain tourism and has gained considerable popularity among travelers. Unfortunately, the perception of hiking activities as a form of mass tourism raises significant concerns regarding potential environmental degradation and the threats posed to biodiversity in mountainous regions. Birds are organisms that are sensitive to human activities. Therefore, a critical component for assessing the impact of mountain tourism on biodiversity is to analyze the diversity of bird species on several hiking trails. This study aims to examine the differences in bird species diversity on several hiking trails with different visitor frequencies on Mount Prau, Indonesia. Surveys for bird observations were conducted systematically using the Variable Circular Plot (VCP) method along the hiking trail. Bird species diversity data were analyzed to obtain Margalef's species richness index, Shannon diversity index, and Pielou's evenness index. In addition, correspondence analysis was also used to see the differences in the composition of bird community species on different hiking trails. Trails with high visitor preferences showed lower species richness, diversity, and evenness indices than rarely visited trails. Ordination analysis showed a clear grouping of bird communities based on species composition between highly visited and less visited routes. Less frequented Mount Prau trails host diverse endemics and high conservation status birds, while heavily frequented trails show reduced diversity. This finding confirms the negative impact of mountain tourism on bird biodiversity in the mountain area. This also signifies the need for a conservation strategy to balance mountain tourism with biodiversity conservation in Mount Prau. It should be able to limit the number of visitors, control access in sensitive areas, and involve methods of ecotourism that would favor wildlife.
Effectiveness of micro-nanobubble aeration and phytoremediation in treating filtered palm oil mill effluent on bacteria diversity and water properties RIA KARNO; ENDANG ARISOESILANINGSIH; IRFAN MUSTAFA; DIAN SISWANTO
Biodiversitas Journal of Biological Diversity Vol. 25 No. 11 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d251133

Abstract

Abstract. Karno R, Arisoesilaningsih E, Mustafa I, Siswanto D. 2024. Effectiveness of micro-nanobubble aeration and phytoremediation in treating filtered palm oil mill effluent on bacteria diversity and water properties. Biodiversitas 25: 4340-4349. Palm oil waste treatment has gained much significance in recent years, as the palm oil industry has been on the rise. In addition, the biological removal of open treatment ponds and the subsequent activity of microorganisms, mainly bacteria, have been given special consideration. Therefore, this study aimed to evaluate the effectiveness of phytoremediation (Phyt) and micro-nanobubble (MnB) aeration technologies on the improvement of physicochemical properties of filtered palm oil mill secondary effluent (POMSE). The effect of the technologies on bacteria density and composition using a laboratory-scale reactor with 24-hour incubation was also explored. Metagenomic analysis using Next Generation Sequencing (NGS) and traditional methods, such as Total Plate Count (TPC) was used to evaluate bacteria density and composition. Physicochemical analyses were then conducted using an Indonesian standard method (SNI). The results showed that the MnB+Phyt reactor was more effective in reducing waste pollutants and meeting waste standards than control, MnB, or Phyt reactors after 24 hours. In addition, TPC counts showed that the highest bacteria density occurred at the 6-hour mark in the MnB+Phyt, Phyt, or MnB reactors compared to the control. Despite variations in bacteria composition among reactors, the dominant phylum and family were Pseudomonadota, Comamonadaceae, Zoogloeaceae, and Alcaligenaceae. The results also showed that MnB treatment significantly increased alpha diversity and altered genera composition. In conclusion, MnB aeration and phytoremediation technologies effectively reduced filtered POMSE pollutants with a removal percentage ranging from 28.37% to 56.69% under 24-hour treatment.
Co-Authors BRIAN RAHARDI DEWI LIESNOOR SETYOWATI EDRIANA PANGESTUTI Endang Arisoesilaningsih IRFAN MUSTAFA LAILA NUR HABIBAH LUCHMAN HAKIM MUHAMMAD ABDULLAH RIA KARNO