Scientific Journals of Bogor Agricultural University
Not a member yet
25587 research outputs found
Sort by
Menilai Pemulihan Ekologis: Analisis Ekonomi Lingkungan terhadap Remediasi Tanah Terkontaminasi Minyak di Hutan Hujan Tropis
No full textThe hydrocarbon contamination affects approximately 5.9 ha of soil in Sultan Syarif Hasyim Grand Forest Park (Tahura SSH), a tropical rainforest in Riau Province, Indonesia. This study aims to determine the costs required to rehabilitate petroleum-contaminated soil and evaluate the economic significance of ecological restoration in a 5.9 ha area designated in Tahura SSH. This study provides a novel economic framework for assessing ecological damage and guiding recovery in a hydrocarbon-impacted area, integrating the Replacement Cost Method (RCM) through restoration cost calculations and the Resource Equivalence Analysis (REA) to assess and compensate for environmental damage-related losses. The study results show that the three main remediation technologies selected, bioventing, bioaugmentation & biostimulation, and ex-situ landfarming, were used to remediate oil-contaminated soil in Tahura SSH. The highest remediation costs are exsitu landfarming, followed by bioaugmentation and biostimulation, and then bioventing. The ex-situ land farming method incurred the highest remediation costs. Nevertheless, it causes ecological harm in the SSH Tahura Area. REA determined that the area required to replace oil-contaminated land should be twice the baseline from 5.9 ha to 12.8 ha. Furthermore, the compensation paid by REA for environmental damage exceeded the initial assessment by 116.1% compared to using the Replacement Cost Method (Bioaugmentation & Biostimulation, Bioventing, and Ex-Situ Landfarming). This study offers stakeholders guidance on determining a fair environmental value for oil-contaminated soil. Future studies Hutan hujan tropis, ekosistem global yang vital, menghadapi degradasi parah akibat aktivitas antropogenik, termasuk pencemaran minyak yang meluas. Artikel penelitian ini menyajikan penilaian ekonomi pemulihan ekologi di area hipotetis seluas 5,9 hektar yang terdampak hidrokarbon di dalam Taman Hutan Raya Sultan Syarif Hasyim, Provinsi Riau. Menggunakan Metode Biaya Penggantian, studi ini memperkirakan pengeluaran ekonomi yang terkait dengan tiga teknologi remediasi utama: bioventing, bioaugmentasi & biostimulasi, dan ex-situ landfarming. Secara bersamaan, Analisis Kesetaraan Sumber Daya (REA) digunakan untuk mengukur nilai ekologi layanan yang hilang dan mengarahkan restorasi kompensasi. Penilaian ini menjelaskan dampak lingkungan pencemaran minyak terhadap tanah, vegetasi, dan satwa liar, serta merinci biaya dan efektivitas setiap pendekatan remediasi. Hasil penelitian menunjukkan bahwa biaya remediasi sebagai kompensasi lingkungan untuk pencemaran minyak di hutan adalah bioventing (1.547.100,62), bioaugmentasi & biostimulasi (1.584.994,61), dan ex-situ landfarming ($2.624.841,35), masing-masing. Penerapan terintegrasi Metode Biaya Penggantian dan REA menyediakan kerangka kerja komprehensif untuk menilai kerusakan lingkungan, meningkatkan penilaian sumber daya alam dan lingkungan sebesar 46,6%, serta memberikan informasi untuk strategi pengelolaan adaptif guna pemulihan ekologi jangka panjang di hutan hujan tropis yang rentan.
Translated with DeepL.com (free version
Bibliometric Analysis of Funding Aspect in the Domain of Marine Protected Area
Full text linkThis paper conducts a comprehensive literature review on the aspect of funding in the management of Marine Protected Areas (MPAs) using bibliometric analysis through the VOSviewer software. Indonesia, as a country with high biodiversity, heavily relies on marine ecosystems, making effective MPA management reliant on adequate funding for monitoring, surveillance, and habitat rehabilitation. International publication data were collected from Scopus (2000-2024) using the keywords "Marine + protected + area + finance", yielding 47 articles analyzed to map research trends and relationships among factors. The analysis results show an increase in studies since 2017, focusing on MPA management, sustainability, environmental protection, biodiversity, and financial aspects. Network visualization reveals strong interconnections between funding, governance, and community participation in MPA management. In conclusion, funding is a critical aspect that still requires further development through additional research.Makalah ini melakukan tinjauan literatur yang komprehensif mengenai aspek pendanaan dalam pengelolaan Kawasan Konservasi Perairan (KKP) dengan menggunakan analisis bibliometrik melalui perangkat lunak VOSviewer. Indonesia sebagai negara dengan keanekaragaman hayati yang tinggi sangat bergantung pada ekosistem laut, sehingga pengelolaan KKP yang efektif sangat bergantung pada pendanaan yang memadai untuk pemantauan, pengawasan, dan rehabilitasi habitat. Data publikasi internasional dikumpulkan dari Scopus (2000-2024) dengan menggunakan kata kunci “Marine + protected + area + finance”, menghasilkan 47 artikel yang dianalisis untuk memetakan tren penelitian dan hubungan antar faktor. Hasil analisis menunjukkan peningkatan penelitian sejak tahun 2017, dengan fokus pada pengelolaan KKL, keberlanjutan, perlindungan lingkungan, keanekaragaman hayati, dan aspek keuangan. Visualisasi jaringan menunjukkan keterkaitan yang kuat antara pendanaan, tata kelola, dan partisipasi masyarakat dalam pengelolaan KKL. Kesimpulannya, pendanaan merupakan aspek penting yang masih memerlukan pengembangan lebih lanjut melalui penelitian tambahan
Application of Lactic Acid Bacteria to Produce Bioactive Compounds from Tofu Waste Using Pineapple Bromelain Enzyme
Full text linkTofu is one of the main human foodstuffs and has become an alternative substitute for animal protein. Tofu contains relatively high protein, and active compounds, but the waste produced during the tofu processing process is very abundant, namely 3.5 million tons per year in Indonesia. The production of active compounds from tofu waste can use bromelain enzymes. The bromelain enzyme in this study was produced from the fermentation of pineapple leaf waste using Pediococcus pentosaceus E7. The production of active compounds from tofu waste has not been widely reported, so this study aimed to produce active compounds from tofu waste. This study began with bromelain production, measurement of bromelain activity, bromelain precipitation, peptide production from tofu waste, Liquid Chromatography-Mass Spectrometry (LC-MS) analysis, and antibacterial testing of active compounds derived from tofu waste degradation. The results showed that the peptide content of tofu liquid waste degraded using the bromelain enzyme was 41.01±0.06 mg/mL. The LCMS results showed that 18 bioactive compounds were contained in the degradation products of tofu liquid waste. The active compounds derived from the degradation of tofu waste are capable of inhibiting the growth of Salmonella Typhimurium ATCC 14028, yielding a clear zone index of 2.53±0.12
Heavy Metal Absorption in Lasolo Bay using a Composite of Cashew-Based Activated Charcoal and Iron Sand, Southeast Sulawesi, Indonesia
Full text linkThis study used a composite of activated charcoal and iron sand extract to reduce the concentrations of heavy metals (Cu, Ni, Zn, Pb, and Cd) in polluted seawater. The grain size of the composite was varied to 60 mesh, 100 mesh, and 200 mesh, with a ratio of activated charcoal to iron sand of 2:3 to optimize absorption. The composite was then compacted into pellets with compaction pressures of 42.2 Pa, 84.8 Pa, and 141.5 Pa, respectively, to achieve optimum compressive strength. The concentrations of heavy metals were measured using an Atomic Absorption Spectrophotometer (AAS). The optimal compaction pressure for the composite was found to be 141.5 Pa, with absorption efficiencies of 61% for Zn, 96% for Pb, 48% for Cd, 90% for Cu, and 94% for Ni. According to the research results, the highest absorption was obtained in composites with a grain size of 200 mesh, with absorption efficiencies of 62.21% for Zn, 96.87% for Pb, 48.14% for Cd, 90.98% for Cu, and 94.15% for Ni. The greater the compaction pressure exerted on the composite, the higher the absorption percentage of the composite pellets. Conversely, a finer grain size also contributes to higher absorption.Penelitian ini menggunakan komposit karbon aktif dari cangkang mete dan ekstrak pasir besi untuk mengurangi kadar logam berat (Cu, Ni, Zn, Pb, dan Cd) dalam air laut yang tercemar di teluk Lasolo Provinsi Sulawesi Tenggara. Ukuran butir komposit divariasikan menjadi 60 mesh, 100 mesh, dan 200 mesh dengan rasio arang aktif terhadap pasir besi sebesar 2:3 untuk memperoleh daya serap yang optimal. Komposit kemudian dipadatkan menjadi pelet dengan tekanan pemadatan masing-masing sebesar 42,2 Pa, 84,8 Pa, dan 141,5 Pa guna mencapai kekuatan tekan optimum dari komposit. Konsentrasi unsur logam berat diukur menggunakan Spektrofotometer Serapan Atom (AAS). Tekanan pemadatan optimal pada komposit ditemukan pada 141,5 Pa, dengan efisiensi penyerapan sebesar 61% untuk Zn, 96% untuk Pb, 48% untuk Cd, 90% untuk Cu, dan 94% untuk Ni. Berdasarkan hasil penelitian, penyerapan tertinggi diperoleh pada komposit dengan ukuran butir 200 mesh, dengan efisiensi penyerapan sebesar 62,21% untuk Zn, 96,87% untuk Pb, 48,14% untuk Cd, 90,98% untuk Cu, dan 94,15% untuk Ni. Semakin besar tekanan pemadatan yang diberikan pada komposit, semakin tinggi persentase penyerapan pelet komposit. Sebaliknya, semakin halus ukuran butir komposit, semakin besar daya serapnya
Exploring the Social-Ecological System Connectivity of a Small-Scale Coral Reef Fisheries: The Case of Ranobe Bay, Madagascar
No full textThe southwest coast of Madagascar is home to small-scale Coral Reef Fisheries (CRFs), a vital activity for livelihoods and the local economy of the fishermen community. Understanding all about the components of this CRFs, the nature of their interactions and the resulting outcomes is crucial for designing policies that promote equitable and sustainable fisheries. This research aims to apply the Social-Ecological Systems (SES) framework and network analysis to assess the SES structure and the characteristics of Ranobe Bay CRFs, Madagascar. This research was carried out from September to October 2024, requiring primary data from field observations, interviews with respondents, and secondary data from literature studies. The Socio-Ecological Network Analysis (SENA) was used to analyze the connectivity of the CRFs in this region. The research findings of the SENA results showed that this fishery is heavily centered around the fishermen\u27s community: the Masikoro and the Vezo as the main actors of this activity. Nevertheless, according to the cluster value analysis, the findings highlight a high number of clusters showcasing a low connectivity and less compact SES structure. Ranobe Bay\u27s CRFs\u27 sustainability depends on fishermen\u27s central connectivity within the network, which can be strengthened through improved policies and management to ensure effective governance
Sustainable Mariculture Development in Mohéli, Comoros: Gather and analyze environmental and economic prerequisites for different types of mariculture from existing literature to develop scenarios and assess potential implications with local communities
No full textMariculture, or the cultivation of aquatic organisms, holds the potential of enhancing food security, income diversification, and overall economic sustainability. To ensure its growth in the long run, it has to be sustainable particularly from the perspective of local communities, economically profitable, and environmentally friendly. The aim of this paper is to assess the acceptability for the feasibility of potential mariculture development in Mohéli, Comoros, a place with no existing mariculture activity, using Multi-Criteria Decision Analysis (MCDA), scenario planning, and stakeholder preference elicitation. Interviews and focus group discussions were conducted with key stakeholders, including local fishers, lawmakers, and environmental experts, to collect data. The results of the study show that economic gain is the main driving force behind the support for mariculture in the assessed communities, but acceptability is also a function of environmental aspects. Of the many mariculture options, seaweed farming was found to be the most recommendable because of its short harvest period, minimal impact on the environment, and low costs. The study shows that there is a need for specific awareness campaigns, collaborative decision making, and strategically changing management measures to solve ecological and socio-economic problems. The present research can be helpful in this regard as it suggests a method of integrating community interests with scientific decision-making tools to develop a roadmap for the growth of sustainable mariculture while ensuring that there is harmony between social, environmental and economic aspects of development in coastal areas
Assessment of Macrobenthos Assemblages Along the Seabed Characteristic in the Cempi Bay, West Nusa Tenggara, Indonesia: A Case Study in the Dry Season
Full text linkThe ecosystem in Cempi Bay, Indonesia, is known for its diverse coastal ecosystems. Gathering baseline data to understand the habitat and its fauna is essential. The study aims to update macrobenthos data and identify natural patterns across sediment gradients, specifically in the dry season. Cempi Bay has three distinct areas: the lower reach (open sea), the middle reach (mixing water), and the upper reach (influenced by freshwater). The most dominant classes in the macrobenthic assemblages were Gastropoda, Bivalvia, and Polychaeta, especially in the lower and middle reaches with sand and silty sand seabed textures. However, the upper reach area with sandy silt textures showed a different pattern of macrobenthic assemblages, with fewer classes, leaving only Gastropoda and Bivalvia. The feeding habits of macrobenthos also varied, with carnivores, deposit feeders, and suspension feeders dominating the lower and middle reach areas. It is important to continue monitoring macrobenthos to understand if these patterns are natural or caused by environmental changes
Utilizing Demographic, Ethnic, and Human Emotional Variables to Enhance Compassion Feeling: Basis for Slow Lorises Conservation Extension Media Development
Full text linkSlow lorises, listed as endanger under CITES Appendex I, are increasingly found outside forest habitate, including the buffer zone of Wan Abdul Rachman Grand Forest Park (Tahura WAR) in Lampung Province. While this coexistence support ex-situ conservation, it also raises risks of illegal hunting and trafficking. This study investigates how demographics, education, ethnicity, and emotion influence compassion (COMP) toward slow lorises. A log-linear model was applied at a 95% confidence level. The response variable [COMP] was scored as 1 if respondents expressed compassion, and 0 otherwise. Explanatory variables included esmotions (affection, neutral, disgust), prior direct sightings, education level, and ethnic background. Data were collected through door-to-door survey of 150 respondents across three villages in the Tahura WAR buffer zone during October–November 2023. Each respondent was shown a 20 cm × 30 cm photograph of slow loris before answering. Results suggest that compassion increases significantly among women, those with fisthand sightings, high school gradustes, and respondents with Lampung or Sundanese parental backgrounds. Affection strongly boost COMP, while digust reduces it. These findings highlight the importance of fostering empathy through conservation education programs that complement law enforcement. These results also support the SDG 15 and 16 pillars implementation
Balancing Ecological and Anthropogenic Demands through Land Carrying Capacity Assessment in Tiworo Watershed
No full textThe Tiworo Watershed on Muna Island, Southeast Sulawesi, is experiencing significant ecological and anthropogenic pressures that threaten the sustainability of its ecosystem functions. Land cover changes have led to increased surface runoff and have impacted coastal ecosystems. This study aims to evaluate the carrying capacity of the Tiworo watershed by analyzing three key parameters: percentage of critical land (PCL), percentage of vegetation cover (PVC), and erosion index (EI), referring to the Minister of Forestry Regulation No. P.61/Menhut-II/2014. The research methods included spatial analysis based on Geographic Information Systems (GIS), collection of secondary data from satellite imagery and relevant agencies, and weighted calculations to determine land carrying capacity scores. The results revealed that 65.4% of the Tiworo watershed area is classified as potentially critical, with 8.14% falling into the critical to very critical category, mainly due to land use change and anthropogenic activities. Although vegetation cover is still relatively good (89.57%), the expansion of settlements and open land has the potential to disrupt ecological stability. The erosion index reached 13.65, far exceeding the tolerance threshold (ETOL 27.55 tons/ha/year), with 52.04% of the area experiencing very severe erosion (>480 tons/ha/year). The land carrying capacity score of 87.5 (good category) indicates that ecological capacity is still adequate, but high degradation pressure requires immediate intervention.The Tiworo Watershed on Muna Island, Southeast Sulawesi, is experiencing increasing ecological and anthropogenic pressure threatening ecosystem sustainability. Land cover change has intensified surface runoff and affected downstream and coastal ecosystems. This study assesses land carrying capacity in the Tiworo Watershed based on biophysical characteristics to support management. The assessment applies three key indicators—Percentage of Critical Land (PCL), Percentage of Vegetation Cover (PVC), and Erosion Index (EI) in accordance with Minister of Forestry Regulation No. P.61/Menhut-II/2014. A spatial analysis approach using Geographic Information Systems (GIS) was employed. Secondary data was obtained from satellite imagery and relevant agencies, including watershed boundaries, land use and land cover, critical land maps, rainfall, soil type, and slope. Soil erosion was estimated to be using the Universal Soil Loss Equation (USLE), with tolerable erosion (ETOL) values from previous studies. Land carrying capacity was calculated using a regulation-based weighted scoring method, in which PCL, PVC, and EI were weighted at 50%, 25%, and 25%, respectively, to generate a composite score. The results show that 65.4% of the watershed is classified as potentially critical land, with 8.14% categorized as critical to very critical. Vegetation cover remains high at 89.57%, while the erosion index reached 13.65, exceeding tolerable limits across more than half the watershed. The composite land carrying capacity score of 87.5 places the watershed in a good sustainability category despite localized degradation. These findings highlight the need to control land conversion, strengthen soil and water conservation, rehabilitate degraded land, and integrate land carrying capacity into spatial planning.
Keywords: Carrying Capacity, Land Sustainability, Tiworo Watershed, Watershed Management
The effectiveness on addition of vitamins as an antioxidant in sperm cryopreservation of catfish Clarias gariepinus
Full text linkOne of the problems faced in catfish hatcheries is that the reproductive cycle does not occur throughout the year, so that available male broodstocks with mature gonads are rare. Cryopreservation is a method of storing spermatozoa with the help of diluents and cryoprotectants in frozen conditions to maintain the quality of spermatozoa. Cryopreservation has a negative effect due to the influence of reactive oxygen species (ROS) which causes a decrease in the quality of spermatozoa. An alternative that can be done is using antioxidants in the form of vitamin C and cryoprotectants such as vitamin E. This research aims to test the effectiveness of adding vitamin E and vitamin C to catfish (Clarias gariepinus) sperm on post-cryopreservation sperm quality. The test fish were catfish that had mature gonads and were injected with the ovaprim hormone for final approval. This study consisted of eight treatments and three replications, namely control (fresh sperm), DMSO 10%, DC1 (vitamin C dose 1 mg/mL), DC2 (vitamin C dose 2.5 mg/mL), and DC3 (vitamin C dose 4 mg/mL), DMSO 10%, DE 1 (vitamin E 2 mg/mL), DE2 (vitamin E 4 mg/mL), DE3 (vitamin E 6 mg/mL). The parameters observed include sperm motility, sperm viability, degree of egg fertilization, and degree of egg hatching. Sperm cryopreservation is carried out for one hour. The results showed that the motility, viability, and degree of egg fertilization in the vitamin C and vitamin E treatments were lower (P<0.05) than the control and 10% DMSO as the basic control.
Keywords: Clarias gariepinus, cryopreservation, vitamin C, vitamin E
Abstrak
Salah satu permasalahan yang dihadapi dalam pembenihan ikan lele adalah siklus reproduksi tidak terjadi sepanjang tahun sehingga ketersediaan induk jantan dengan gonad matang menjadi langka. Kriopreservasi merupakan salah satu metode penyimpanan spermatozoa dengan bantuan bahan pengencer dan krioprotektan dalam kondisi beku untuk mempertahankan kualitas spermatozoa. Kriopreservasi memiliki dampak negatif akibat adanya pengaruh reactive oxygen species (ROS) yang menyebabkan penurunan kualitas spermatozoa. Alternatif yang dapat dilakukan adalah dengan menggunakan antioksidan berupa vitamin C dan krioprotektan seperti vitamin E. Penelitian ini bertujuan untuk menguji efektivitas penambahan vitamin E dan vitamin C pada sperma ikan lele (Clarias gariepinus) terhadap kualitas sperma pascakriopreservasi. Ikan uji adalah ikan lele yang telah memiliki gonad matang dan disuntik hormon ovaprim untuk persetujuan akhir. Penelitian ini terdiri dari delapan perlakuan dan tiga kali ulangan, yaitu kontrol (sperma segar), DMSO 10%, DC1 (dosis vitamin C 1 mg/mL), DC2 (dosis vitamin C 2,5 mg/mL), dan DC3 (dosis vitamin C 4 mg/mL), DMSO 10%, DE 1 (vitamin E 2 mg/mL), DE2 (vitamin E 4 mg/mL), DE3 (vitamin E 6 mg/mL). Parameter yang diamati meliputi motilitas sperma, viabilitas sperma, derajat fertilisasi sel telur dan derajat penetasan sel telur. Kriopreservasi sperma dilakukan selama satu jam. Hasil penelitian menunjukkan bahwa motilitas, viabilitas dan derajat fertilisasi sel telur pada perlakuan vitamin C dan vitamin E lebih rendah (P<0,05) dibandingkan kontrol dan DMSO 10% sebagai kontrol dasar.
Kata kunci: Clarias gariepinus, kriopreservasi, vitamin C, vitamin