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All Journal IJEMS (Indonesian Journal of Environmental Management and Sustainability) 3BIO: Journal of Biological Science, Technology and Management
Elham Sumarga
School of Life Sciences and Technology, Institut Teknologi Bandung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Energy Environmental Science Immunology & microbiology Neuroscience Public Health

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Risk Assesment and Management Recommendations of Invasive Species in Papandayan Mountain Nature Reserve, West Java Anggi Sella Nyuanti; Rina Ratnasih Irwanto; Elham Sumarga
3BIO: Journal of Biological Science, Technology and Management Vol. 2 No. 2 (2020)
Publisher : School of Life Sciences and Technology, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/3bio.2020.2.2.5

Abstract

Natural disasters and anthropogenic disturbances have caused several locations in the Papandayan Mountain Nature Reserve to be more vulnerable and exposed further triggering the presence of invasive species. This presence impacts the environment, the economy, and the health of humans and animals. This research aims to assess the risks of these invasive species, followed by various recommendation strategies towards their species management. Data on species diversity was collected by vegetation analysis, using the quadratic method by purposively sampling plots. Results showed the existence of six invasive species in Papandayan i.e. Ageratina riparia (Regel) R.M.King & H.Rob., Ageratina adenophora (Spreng.) R.M.King & H.Rob.,Austroeupatorium inulaefolium (Kunth) R.M.King & H.Rob., Imperata cylindrica (L.) Raeusch., Rubus moluccanus L., and Ageratum conyzoides (L.) L.. The assessment of invasive species was assessed through two indices; Risk Index and Feasibility Index. Each of them was calculated based on the Risk Assessment Protocol to determine their strategy of control. Based on the Risk and Feasibility Indices, several recommendation strategies to manage invasive species are proposed.
Estimation of Minimum Viable Population of Long-tailed Macaques (Macaca fascicularis Raffles 1821) in Support of Wildlife Management in Ir. H. Djuanda Grand Forest Park Hatta Vrazila; Elham Sumarga; Hikmat Ramdan
3BIO: Journal of Biological Science, Technology and Management Vol. 4 No. 1 (2022)
Publisher : School of Life Sciences and Technology, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/3bio.2022.4.1.2

Abstract

Most long-tailed macaques (LTMs) in Southeast Asia are commensal animals, which means they can coexist and benefit from humans. This interaction potentially triggers disturbance and disease transmission caused by LTMs, for instance, in Ir. Djuanda Grand Forest Park (GFP). A previous study indicates an overpopulation of LTMs in this area. The need for population control of this macaque requires appropriate ecological considerations, including determining the minimum viable population (MVP). This study aims to estimate the MVP of LTMs in Ir. Djuanda GFP area is the key input for its population control scheme. The MVP is determined based on population growth simulation using the Lefkovitch matrix. In combination with the estimate of population growth, the MVP was used to formulate the population control scheme of LTMs, by considering the current wildlife management regulations and the perception of Ir. Djuanda GFP area manager obtained through interviews. This study found six groups of LTMs in Ir. Djuanda GFP with a total population of 229 individuals, a sex ratio of 1:1.05, an age class ratio of infants, juveniles, sub-adults, and adults of 16.6%:25.7%:32,3%:25.3%, and a population growth rate of 19.7%/year. The estimate of MVP of this primate is 230 individuals, with an average group size of 38 individuals and an age class ratio of infants, juveniles, sub-adults, and adults 30%:9.1%:27.4%:23.5%. Based on wildlife management regulations and area manager perceptions, population control schemes can be implemented for relocation and captive purposes. The population control scheme consists of an age-class control scheme and a group control scheme. The age-class control scheme controls the population by 334 individuals, while the colony control scheme controls 406 individuals.
Feasibility of Local Commodities on Peatlands Resti Salmayenti; Muhammad Sugihartono; Elham Sumarga; Fauziah Nur; Aan Aryanti Sandra
Indonesian Journal of Environmental Management and Sustainability Vol. 6 No. 2 (2022): June
Publisher : Research Centre of Inorganic Materials and Complexs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2022.6.2.67-75

Abstract

Indonesian peat ecosystem, generally managed for protection and cultivation functions, contributes to providing economic benefits to the local community through agricultural practices. This study aims to evaluate the feasibility of local commodity agriculture (coffee, areca, coconut, and pineapple) on peatland from social, ecological, and economic perspectives using descriptive and quantitative approaches in Mendahara-Batanghari, Jambi. Data was collected from interviews of 60 farmers in two villages with three types of farms, including monoculture and polyculture of commodities. The results of this study showed that socially, farmers still have difficulty with access and infrastructures. Coconut, areca, and coffee are popular among the smallholders because of land suitability, low maintenance, and high selling price. From an ecological perspective, intercropping on polyculture farms is able to store more carbon with a high density of biomass than on monoculture farms. Generally, the carbon emissions of local commodity farms are lower than other types of plantations, such as oil palm and rubber plantations. Lastly, from an economic perspective, local commodity farming in the study area is feasible based on analyses of net present value, benefit cost ratio, and internal rate of return. Polyculture farms provide higher benefits compared to monoculture land. The income is considered sufficient for standard living needs, and there is potential to increase the revenue by developing and optimising processing product industries.
Co-Authors Aan Aryanti Sandra Anggi Sella Nyuanti Fauziah Nur Hatta Vrazila Hikmat Ramdan Muhammad Sugihartono Resti Salmayenti Rina Ratnasih Irwanto