Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)
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Abundance and diversity of soil arthropods in the secondary forest and park at the University of Bengkulu
Get PDFSoil ecosystems are ecosystems related to the degradation of organic matter. University of Bengkulu is an area that has two kinds of soil ecosystems; secondary forest ecosystems and park ecosystems. Arthropods are one of the faunas living in the University of Bengkulu campus ecosystem. Camponotus dominates the secondary forest area, while Solenopsis dominates the park ecosystem. Data were obtained from two ecosystems (secondary forest ecosystem and park ecosystem). The results show that there are five classes with 199 individuals, while in the park ecosystem, there are four classes with 250 individuals.The secondary forest ecosystem diversity index value is 2,73, and the ecosystem diversity index value is 1,91. The evenness index value of the secondary forest ecosystem is 0,78, and the park ecosystem is 0,76. The secondary forest ecosystem dominance index value is 0,09, and the park ecosystem dominance index is 0,17. The diversity of soil arthropods in secondary forest and park ecosystems is in the category of moderate diversity. The even distribution of soil arthropods in both ecosystems is high. Moreover, there is no dominance by one type of soil arthropods in both ecosystems. The diversity of arthropods in the secondary forest ecosystem is higher than that of the park ecosystem. The number of individuals in the park ecosystem is higher than in the secondary forest ecosystem. In both ecosystems, the most commonly found are from the Formicidae famil
Flood Hazard Maping Using QGIS Spatial Analysis in Bangko and Masjid Watershed at Riau, Indonesia
Get PDFFlooding is a natural occurrence hazardous to people and properties and produces environmental and economic losses, especially in flood-prone areas. This study will be used to assess flood risk in the Bangko and Masjid watersheds. To analyze it, flood hazard mapping is arranged by slope, land cover, elevation, rainfall, buffer zone, and soil type, which is done with the help of a Geographic Information System (GIS), specifically QuantumGIS (QGIS). This system tool assesses each variable utilizing satellite spatial data and categorizes the vulnerability being very high, high, medium, low, and very low. Each map arrangement value is combined using an overlay value to determine the flood susceptibility. According to the mapping results, the Bangko and Masjid watersheds are highly vulnerable to flooding. Based on the results of the mapping, in the Bangko watershed 61% of the total area is vulnerable to flooding, and 20% has high to very high vulnerability, while in the Mosque watershed 84% of the area is vulnerable to flooding and 11% of the total area has high vulnerability. to very high. After validation of areas that are often affected by floods, it is known that these areas are in vulnerable to very vulnerable areas. This is due to the low watershed elevation and flat slope and high rainfall, as well as residential areas close to the river in the watershed. This is due to the watershed\u27s low elevation and flat slope and the high rainfall, and the residential area close to the river in the watershed area. Hence, it is vital to establish a convenient and straight-off understandable flood hazard map that emphasizes the management mitigation effects
Analysis of the Ecotourism Potential of the Mount Mekongga Protected Forest, North Kolaka Regency, Southeast Sulawesi Province
Get PDFAbstract: The protected forest of Mount Mekongga is the upstream of three major rivers that empties into Kolaka Regency and North Kolaka Regency, which play an important role in the lives of the surrounding community. The conditions that have occurred so far have been threatened in the form of encroachment, illegal logging, and animal hunting. This is a threat that will lead to forest area degradation in the future. The purpose of this study was to identify and assess the potential of tourism resources in the protected forest of Mount Mekongga. Data collection was carried out in March-July 2022, data collection methods tended towards field observations and visual observations, in-depth interviews were conducted with the community and managers, and literature studies. Tourism potential analysis refers to the assessment criteria of Avenzora (2008) which include 7 associative criteria, namely uniqueness, rarity, beauty, seasonality, accessibility, sensitivity, social function. The tourism potential assessed is the potential for natural tourism, consisting of flora, fauna, natural phenomena. Each variable produces superior potential, namely the fiber orchid, the sulawesi julang, and the tinukari rive
Ecoenzym quality and potential of residues as bioactivator for organic waste composting
No full textEcoenzyme is a complex organic solution that can be an alternative for environmental management. Ecoenzym is made by fermenting water spinach, chinese cabbage, mango, papaya, with palm sugar or granulated sugar and water in plastic bottles of 1500mL for 3 months. Ecoenzyme solution was analyzed for aroma quality, color, pH, volume and alcohol content. Ecoenzyme residues (BRE), effective microorganisms (BEM) and without bioactivator (TBP) were tested for the ability to decompose organic waste aerobically in plastic buckets. All treatments produced an ecoenzyme solution with a strong acid aroma, light brown to reddish brown in color, pH ranging from 3.1-.3.4, volume ranging from 740-780mL and contained alcohol ranging fom 4.1-4.8%. The lowest volume of ecoenzyme solution was 740mL in ECO2 and the highest was 780mL in ECO6. The lowest alcohol content is 4.1% in ECO3 and the highest is 4.8% in ECO5. Residual ecoenzymes (BRE), effective microorganisms (BEM) and without bioactivator (TBP) are able to decompose organic waste with the results of pH, temperature, humidity, total N, P2O5 and K2O that meet the Indonesian national standard (SNI) for composting. The composting pH value ranging from 6.4-7.5, temperature ranging from 27-36oC, humidity ranging from 66-81%, total N ranging from 0.68-0.80%, P2O5 ranging fom 0.49-0.54%, and K2O ranging from 0.75-.0.90%. This study concludes that the use of mango and papaya waste and palm sugar produces an ecoenzyme solution with the highest alcohol content and potential ecoenzyme residues as a bioactivator for organic waste compostin
Potential Absorption and Economic Carbon Valuation of Teak (Tectona grandis) at Hasanuddin University City Forest for Supporting Emission Reduction in Makassar City
Get PDFThe diversity of plants/vegetation in the UNHAS City Forest certainly has a positive impact on the environment. One type of plant species in the UNHAS urban forest is Teak (Tectona grandis L.f.). The community views Teak as a plant that only has economic potential because of the quality of its wood, but it is also necessary to know that this plant is suspected to have potential as an environmental service provider. So it is necessary to know more about the ability of teak plants to absorb carbon dioxide. Through this research, estimating carbon stored in Teak stands (Tectona grandis L.f.) was carried out by taking a case study in the City Forest at the Hasanuddin University Campus. The method of collecting emission data was collected from the Bapenas manuscript website, which was used to collect data on the potential of biomass in this study using non-destructive methods. The data collected includes the diameter, height, and specific gravity of teak trees. The diameter of the teak plant is obtained by surveying each individual teak plant. The emissions produced by Makassar City in 2022 are 6,944,242.74 tons of CO2eq. Teak trees located in the urban forest of Hasanuddin University then succeeded in reducing 455.93 - 482.48 tons of CO2eq according to carbon absorption calculations. The economic valuation of carbon reserves located in teak stands in the urban forest of Hasanuddin University ranges from USD 206.76 / Rp. 2,998,020 tons / ha to USD 218.8 / Rp. 3,172,600 tons / h
Sustainability Status Index of Simple Agroforestry of Magersaren (SAM) with RAP-SAS Method
Get PDFThe simple agroforestry system of the Magersaren in UB Forest is a source of livelihood for the community that has long inhabited the area. Unsustainable management will increase the amount of damage. So, it needs information about the sustainability status of the simple agroforestry system of the magersaren on various dimensions with sustainable attribute criteria. This research was carried out in the UB Forest educational forest located on the slopes of Mount Arjuno, Sumbersari Hamlet, Tawang Argo Village, Karangploso District, Malang Regency. This study aims to analyze the sustainability status of the agroforestry system of the Magersaren in the UB Forest Area. Sustainability status is determined based on a sustainability index formulated through multi-dimensional scaling (MDS) analysis of the RAP-SAS (Rapid Appraisal for Simple Agroforestry System) method. Based on the results of the sustainability status analysis, it shows that the simple agroforestry system in UB Forest is good or very sustainable, in the ecological dimension with an index value of 85.16%, the economic dimension of 79.70% and the socio-institutional dimension of 72.91%. Meanwhile, the management and technology dimension were 66.94% which showed a fairly sustainable status with sensitive attributes owned, namely business planning and processing with an RMS (Root Mean Square) value of 12.3.Sistem agroforestri sederhana Magersaren di Hutan UB merupakan sumber mata pencaharian masyarakat yang telah lama menghuni kawasan tersebut. Pengelolaan yang tidak berkelanjutan akan meningkatkan jumlah kerusakan. Sehingga diperlukan informasi tentang status keberlanjutan sistem agroforestri sederhana magersaren pada berbagai dimensi dengan kriteria atribut berkelanjutan. Penelitian ini dilaksanakan di hutan pendidikan UB Forest yang terletak di lereng Gunung Arjuno, Dusun Sumbersari, Desa Tawang Argo, Kecamatan Karangploso, Kabupaten Malang. Penelitian ini bertujuan menganalisis status kelestarian sistem agroforestri Magersaren di Kawasan Hutan UB. Status keberlanjutan ditentukan berdasarkan indeks keberlanjutan yang dirumuskan melalui analisis skala multi dimensi (MDS) metode RAP-SAS (Rapid Appraisal for Simple Agroforestry System). Berdasarkan hasil analisis status kelestarian menunjukkan bahwa sistem agroforestri sederhana di Hutan UB tergolong baik atau sangat lestari, pada dimensi ekologi dengan nilai indeks sebesar 85,16%, dimensi ekonomi sebesar 79,70% dan dimensi sosial kelembagaan. sebesar 72,91%. Sedangkan dimensi manajemen dan teknologi sebesar 66,94% yang menunjukkan status cukup berkelanjutan dengan atribut sensitif yang dimiliki yaitu perencanaan dan pengolahan bisnis dengan nilai RMS (Root Mean Square) sebesar 12,3
The Analysis of sustainability factors underlying human-monkeys (Macaca fascicularis) conflict at IPB University
No full textMacaca Fascicularis memiliki habitat yang tersebar di lokasi-lokasi yang memiliki tingkat aktivitas manusia yang tinggi. Kedekatan habitat Macaca Fascicularis dengan lokasi aktivitas manusia akan meningkatkan potensi konflik manusia dengan Macaca Fascicularis. Tujuan dari penelitian ini adalah untuk mengidentifikasi variabel-variabel penyebab konflik di kawasan kampus IPB Dramaga dengan mendeskripsikan intensitas pengaruh dan hubungan saling ketergantungan antar variabel, serta mengelompokkannya dalam urutan yang paling berpengaruh hingga yang paling tidak berpengaruh. Penelitian ini dilakukan di Kampus IPB Dramaga, Kabupaten Bogor, Provinsi Jawa Barat pada tanggal 17 Oktober 2021 sampai dengan 7 November 2021. Selain itu objek penelitian ini adalah kelompok Macaca Fascicularis yang berada di Kampus IPB Dramaga. Universitas. Kajian ini menggunakan paradigma struktural prospektif untuk menggali struktur, dinamika dan jaringan keterkaitan antar variabel yang dianggap paling penting dalam menentukan konflik Macaca Fascicularis. Selain itu, pengumpulan data dilakukan dengan menerapkan metode Focus Group Discussion (FGD) untuk menentukan variabel yang berpengaruh dan menentukan konflik manusia dengan Macaca Fascicularis. Analisis data menggunakan Metode Micmac. Berdasarkan hasil penelitian diketahui faktor-faktor yang mempengaruhi tingginya tingkat gangguan Macaca fascicularis, pangan, vegetasi, budaya, dan peran penting aktivitas manusia, lahan, populasi, mitigasi, manfaat sumber daya hutan, daya dukung dan persepsi masyarakat sekitar kampus IPB Dramaga terhadap macacafascicularis di hutan.The proximity of the Macaca fascicularis habitat to locations of human activity, especially in the IPB University area, disrupts human activity, especially in the morning and evening. The act of Maccaca fascicularis entering human territory increases the potential for human conflict with Macaca fascicularis. This research aims to identify the variables that cause conflict in the IPB Dramaga Campus environment by describing the intensity of influence and interdependent relationships between variables and grouping them from the most influential to the least influential. This research was conducted at IPB University, Bogor, Indonesia in 2021. The object of this research was the Macaca fascicularis group located at the IPB Dramaga Campus. Data collection was carried out by applying the Focus Group Discussion method to determine the influencing variables and human conflict with Macaca fascicularis. Data analysis was carried out using the Micmac Method. Based on the research results, there are factors that influence food, vegetation, culture, and the important role of human activity, land, population, and mitigation. The Primate Animal Study Center (PSSP) in collaboration with the Bogor BKSDA is making efforts to overcome disturbances using the Trapping Cage method, which is a method carried out by storing iron cages filled with fruit such as bananas and others in several locations that are suspected to be frequently visited areas and Increase the active role of the community around the IPB campus which is affected by long-tailed monkeys by providing incentives for people who are able to catch long-tailed monkeys without causing harm
The Concept of a Zero Runoff System (ZROS) in reducing the volume of rainwater runoff using infiltration wells at the Syiah Kuala University
Get PDFHigh rainfall with a very high intensity can cause inundation. The purpose of this study was to determine the magnitude of the designed flood discharge that occurred, and the number of infiltration wells needed to reduce rainwater runoff. This research uses data of maximum 10 years of daily rainfall for observation. The results showed that the rainfall intensity for the 5 years return period was 47.24 mm/hr resulting in a design flood discharge of 2.27 m3/second. The average well water level is 5.08 cm with an average soil permeability value of 5.03 cm/hour. Infiltration wells are designed with a depth of 1.5 m with a diameter of 1.4 m. The use of wells is calculated based on 2 types, type 1 (lined well walls) and type 2 (non-lined walls) in each roof class. The total area of roof covering 15.38 ha requires ± 2.678 type 1 wells, or ±2.440 type 2 wells which can reduce rainwater runoff by 17% (type 1) or 30% (type 2) of the total flood discharge of the Syiah Kuala University. 
Vegetation structure, biomass, and carbon of Mangrove Forests in Ambon Bay, Maluku, Indonesia
Get PDFHutan mangrove berperan penting di wilayah pesisir sebagai ekosistem vegetasi berkayu penyimpan karbon tinggi yang tumbuh pada tanah berlumpur dan anaerobik. Penelitian ini dilaksanakan pada bulan November 2021 sampai dengan Januari 2022 bertujuan untuk mengetahui komposisi jenis dan menduga biomassa dan simpanan karbon hutan mangrove di Teluk Ambon, untuk dijadikan acuan dalam pengelolaan hutan mangrove. Survei vegetasi dilakukan dengan teknik petak persegi dengan membuat petak pengamatan standar untuk analisis data kerapatan, frekuensi, dominansi, dan indeks nilai penting. Persamaan alometrik digunakan untuk pendugaan biomassa pohon. Metode loss-on-ignition digunakan untuk memperkirakan karbon tanah. Hasil penelitian menemukan 8 spesies mangrove dengan habitus pohon. Sonneratia alba ditemukan sebagai spesies monodominan dengan indeks nilai penting lebih dari 100%. Penelitian menemukan rata-rata potensi biomassa dan karbon tertinggi di Desa Passo dengan AGB 280,47±168,94 Mg ha-1, BGB 83,06±55,1 Mg ha-1, dan karbon sedimen 320,03±106,97 Mg C ha-1. Stok karbon hutan mangrove di Teluk Ambon diperkirakan sebesar 400,67±166,25 Mg C ha-1. Kami menyimpulkan simpanan karbon hutan mangrove di Teluk Ambon cukup tinggi, terutama di Desa Passo yang merupakan lahan simpanan karbon terbesar.Mangrove forests serve a substantial part in coastal areas as high-carbon-storage woody vegetation ecosystems that grow on muddy and anaerobic soils. This study determined the species composition and estimated the biomass production and storage of carbon in Ambon Bay mangrove forests. Vegetation surveys for species composition were conducted using the square plot technique by making standard observation plots for density, frequency, dominance, and important value index data analysis. We used Allometric equations and the Loss-on-ignition method to calculate the biomass and soil carbon. Vegetation surveys revealed eight species of tree-habitus mangroves, and Sonneratia alba was a mono-dominant species with an important value index of more than 100%. The study revealed the highest average potential of biomass and carbon in Passo Village with AGB 280.47±168.94 Mg ha-1, BGB 83.06±55.1 Mg ha-1, and sediment carbon 320.03±106.97 Mg C ha-1. The carbon stock of the mangrove forest in Ambon Bay was estimated at 400.67±166.25 Mg C ha-1. We conclude that mangrove forest carbon stores in Ambon Bay had relatively high values. Passo Village has the largest carbon store compared to other locations in the Ambon Bay mangrove forest
Biometric and biochemical characteristics of glass eels (Anguilla spp.) collected from Cimandiri Estuary, Sukabumi Regency, Indonesia
Get PDFViabilitas glass eel menentukan keberhasilan budidaya dan mengatur variabilitas rekrutmen, masing-masing sebagai benih dalam akuakultur dan populasi liarnya. Penelitian ini bertujuan untuk mengkaji kualitas glass eel melalui pengukuran biometrik dipasangkan dengan analisis proksimat. Pengumpulan glass eel dilakukan setiap bulan dengan menggunakan alat tangkap sirib di Muara Cimandiry selama bulan Desember 2020 - April 2021. Aspek biometrik yang diukur adalah panjang, berat, diameter mata, jantung, dan hati, sedangkan proksimat adalah kandungan protein, lemak, karbohidrat, dan abu. Hasil penelitian menunjukkan bahwa panjang dan berat badan terus bertambah setiap bulannya, meskipun faktor kondisi tidak memperlihatkan perbedaan. Diameter mata dan bukaan mulut mengkonfirmasi penglihatan ikan predator diurnal. Jantung dan hati menunjukkan kemampuan metabolisme pada ikan perenang cepat sebagai ikan bermigrasi katadromus. Protein, lemak, karbohidrat, dan abu berfluktuasi antar bulan, meskipun perbandingan antar bulan tidak signifikan. Tidak ada konfirmasi yang jelas dari analisis proksimat pada karakter biometrik. Namun glass eel dengan ukuran terbesar pada Bulan April mungkin yang terbaik untuk benih budidaya.Glass eel viability determines the success of cultivation and governs the recruitment variability, as seeds in aquaculture and its wild population, respectively. This study aims to examine the quality of glass eel using biometric measurements coupled proximate contents. Glass eel collection was made montly by using lift-net like fishing gear in Cimandiry Estuary during December 2020 - April 2021. Biometric aspects were examined on length, weight, eye diameter, heart, and liver, whereas proximate was run on proteins, fats, carbohydrates, and ash. The results showed that length and weight steadily increased between month, though the condition factor was indifferent. Eye diameter and mouth opening confirm the vision of diurnal predatory fish. Heart and liver have demonstrated the metabolism capability and fast swimming fish favors to migratory catadromous fish. Proteins, fats, carbohydrates, and ash fluctuated between month, though insignificant between month comparison. No clear confirmation of proximate analysis on biometric characters. However, the glass eels with largest size in April might be best for aquaculture