Tropical Wetland Journal (TWJ)
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125 research outputs found
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A Electronic Corruption (E-Corruption) in Digital Public Services: Criminal Law Challenges in the Era of Technological Transformation
No full textThe development of digital technology in public services presents great opportunities to increase transparency and accountability but also raises new challenges in the form of increasingly complex electronic corruption (e-corruption). The urgency of this study lies in the need for a deep understanding of the criminal law challenges that arise due to the digitalization of public administration, especially in the context of developing countries. This study aims to analyze the impact of digitalization on the level of corruption in the public service sector and assess the effectiveness of existing legal mechanisms in overcoming e-corruption. The method used is mixed methods with a sequential explanatory approach, involving qualitative analysis through in-depth interviews and literature studies, as well as quantitative surveys of civil servants and users of digital public services. The study results show that digitalization has succeeded in increasing transparency and reducing traditional corruption, but has also given rise to new forms of e-corruption such as data manipulation and misuse of digital identities. The main challenges identified include regulatory gaps, system vulnerabilities, and low digital literacy among the public. These findings emphasize the need for regulatory updates, strengthening digital security systems, and increasing digital literacy to support eradicating corruption in the digital era. This research makes an important contribution to the development of public policies that are adaptive to technological transformation and recommends further research with a broader scope to test the effectiveness of e-corruption prevention strategies
THE Terrestrial Mammal Species Diversity in The Lamandau Wildlife Reserve Central Kalimantan Province
No full textThe aim of this research is to inventory the diversity of land mammal species in the Lamandau Wildlife Reserve, Central Kalimantan Province. The method used is direct and indirect observation using strip transects and camera traps. The research results obtained ten types of mammals at three different observation sites, namely Gemini camp, JL camp and Rasak camp. The calculation results show that the richness index (R) and diversity index (H\u27) of each camp are relatively low, while the evenness index (E) of each camp is relatively high
Impact of Processing Black Soldier Fly (Hermetia illucens) Larvae into Meal on Nutritional Value
Full text linkThe objective of this study was to determine the nutritional content of black soldier fly (BSF) maggot meal after undergoing steaming and roasting processes. Steaming was aimed at reducing the crude fat content in the maggot meal, while roasting was intended to accelerate the drying process of fresh maggots. The maggots used in this study were 28-day-old maggots fed with quail manure. The research method employed was an experimental method using a Completely Randomized Design (CRD), consisting of 4 treatments and four replications. The treatments given were: A (maggots not steamed and not roasted), B (maggots not steamed and roasted), C (maggots steamed and not roasted), and D (maggots steamed and roasted). Parameters analyzed included dry matter (%), ash content (%), crude protein (%), and crude fat (%). The results of variance analysis showed that the processing had a very significant effect (P<0.01) on the dry matter, ash content, crude protein, and crude fat content of the resulting maggot meal. The conclusion of this study is that the combined application of steaming and roasting significantly reduced the fat content in maggot meal by up to 87% and increased the protein content by 4%. This processing technique resulted in a product with enhanced quality, extended shelf life, and broader application potential in the feed industry
Study of Abundance and Fish Diversity in the Swamp Waters of Danau Bangkau, South Kalimantan
No full textThe swampy waters of Danau Bangkau, South Kalimantan are swampy waters that have an economic impact on the surrounding community. There is a need for research to know the productivity status of these waters from the abundance and diversity of fish. The research was carried out by dividing into 3 fish sampling stations determined by purposive sampling. The fish samples obtained were identified from families and species. The parameters observed and analyzed included the relative abundance of fish, diversity index, Evenness index, and Dominance Index. The results of the study were obtained from 1,108 individual fish and 28 species from 10 families. The results of the study show that the largest relative abundance is from the Cyprinidae family, which is 56.14% and this indicates that the waters are quite healthy because many fish are inhabited by herbivorous eating properties. The Diversity Index (H\u27) obtained was 2.53 – 2.71, Evenness Index 0.52 – 0.55 and Dominance Index 0.37 – 0.44 which means that the waters are still healthy, with moderate productivity, but tend to be somewhat disturbed. The implication is that in the future there must be protection of the swampy waters of Danau Bangkau with strategies to restrict fishing and control sedimentation and domestic pollution
Integrating Oil Palm and Cattle Farming in South Kalimantan: Opportunities and Challenges: Livestock Distribution, Development Model and Strategy of Oil Palm-Cattle Integration Referring to Livestock Base Area in Kotabaru District in Supporting The New Capital City of Indonesia (IKN)
Full text linkThis study examines the integration of oil palm and cattle farming in South Kalimantan, Indonesia, to support meat production for the new capital city. Kotabaru, a district with abundant oil palm plantations, faces a challenge in meeting the increasing demand for beef. This research analyzes the distribution of superior livestock, develops an oil palm-cattle integration model, and formulates development strategies. The study uses location quotient (LQ), localization index (LI), and specialization index (SI) analysis, field observations, interviews with farmers and stakeholders, and SWOT analysis. Conducted in four sub-districts of Kotabaru over eight months, the research identifies superior cattle base areas and proposes three development models: intensive, semi-intensive, and extensive. The SWOT analysis generates short-term and medium-term strategies for developing oil palm-cattle integration
Effectiveness of Gelam Wood Liquid Smoke on the Retention and Absorption Preservatives in Terantang Wood (Campnosperma auriculatum (BI.) Hook.f)
No full textWood durability is a crucial factor in its utilization, especially in tropical regions with high humidity levels. Terantang wood is classified as lightweight wood with low resistance to wood-degrading organisms. Preservation using liquid smoke is one of the alternative methods to enhance the durability of Terantang wood. This study aims to evaluate the effectiveness of liquid smoke derived from Gelam wood (Melaleuca sp.) as a natural preservative for Terantang wood. The preservation process was conducted using a cold-soaking method for 48 hours with three different liquid smoke concentrations: 10%, 20%, and 30%. After treatment, the wood samples were dried and tested to determine their retention and absorption values. The results showed that increasing the liquid smoke concentration directly correlated with higher retention and absorption values. The 30% concentration exhibited the highest retention (0.055 g/cm³) and absorption (0.241 g/cm³), indicating superior effectiveness in enhancing wood durability. Retention was highest near the heartwood, while absorption was greater near the sapwood. These findings suggest that Gelam wood liquid smoke has significant potential as an eco-friendly and cost-effective wood preservative. Its use can serve as a safer alternative to synthetic preservatives, supporting more sustainable wood processing practices.
Keywords: Liquid smoke, Gelam wood, Terantang wood, wood preservation, retention, absorption
 
Contamination of Salmonella sp. in Broiler Meat Sold in Traditional Markets of Banjarbaru City
Full text linkMeat is an important food commodity in meeting nutritional needs. Damage that leads to a decrease in the quality of fresh meat is mainly caused by microorganisms. One of the pathogenic bacteria that can contaminate broiler meat is Salmonella sp. This research aims to determine the food safety level of broiler meat sold in traditional markets in the city of Banjarbaru regarding contamination by Salmonella sp. bacteria and to prevent the circulation of poultry-origin products (broilers) that do not meet the required standards, which can threaten consumer health. The research method used in this study is a survey and laboratory analysis. This study utilized 56 chicken meat samples from 4 traditional markets using a random sampling method. The test results showed that 18 samples were contaminated with Salmonella sp. bacteria out of the 56 samples. This indicates that the quality of chicken meat sold in some traditional markets, 32.14%, does not meet the standards based on the Indonesian National Standard for chicken meat (SNI 7388:2009
Chlorophyll Content of Aromatic Rice Mentik Susu in Peat Soils Due to Ash Ameliorant and Jakaba LOF
Full text linkPaddy plant chlorophyll is one of the determinants of plant growth and development, as photosynthesis plays a role in capturing light and transforming inorganic compounds into nutrients that plants need. The problem with the cultivation of paddy in the palm soil is the high saturation of the soil. There is a need for improvement in the ashes, ashes of palm powder, and empty palm cane ashes to lower the saturation. In addition, the application of jakaba LOF is necessary to boost the growth of milk dough crops, especially in the formation of chlorophyll. This research aims to determine the effect of jakaba LOF on the chlorophyll content of aromatic mentik susu rice in peat soil where ash ameliorant has been applied. This study used a nested factorial completely randomized design (CRD). The jakaba LOF application factor was nested in the type of ash ameliorant. The ameliorant type factor (s) consists of four treatments: s0 = no ameliorant, s1 = rice husk ash, s2 = sawdust wood ash, and s3 = empty oil palm bunch ash. The dose factor for LOF jakaba application (j) consists of two treatments: j0 = without application of LOF jakaba, j1 = application of LOF jakaba 15 mL-1. The results of the research showed that the application of LOF jakaba did not have a significant effect on the chlorophyll content of aromatic mentik susu rice in peat soil based on the type of ash ameliorant. Application of ash ameliorant to peat soil planted with milk aromatic rice can increase the chlorophyll b content and total chlorophyll of rice. Treatment without ash ameliorant (s0) can increase the chlorophyll b content and total chlorophyll content of rice by 16.45 mg mL-1 and 15.27 mg mL-1, respectively compared to the treatment of rice husk ash (s1), sawdust wood ash (s2), and empty palm fruit bunch ash (s3)
The Productivity of Black Soldier Fly (Hermetia illucens) Maggot and Its Decomposability on Various Growing Media
No full textMaggot is the larva of the Black Soldier Fly (Hermitia illucens) which is one of the alternative feeds that meets the requirements as a source of protein and is often used as a decomposing agent for organic waste. The purpose of the study was to determine the best type of media to increase the production of maggot H. illucens as a potential alternative source of protein for animal feed and as fertilizer. This study was designed using a completely randomized design (CRD) with four treatments and five (5) replications. The treatments tried in this study were as follows P1 = Chicken manure, P2 = Cow manure, P3 = Market waste, P4 = Restaurant waste, as maggot growing media. The results showed that the type of growing media had an effect on maggot production including final weight. final length. total weight of maggot. and protein content. also on the ability to decompose maggot including compost residue, dry matter, ash content, and organic matter. The type of media treatment P4 (restaurant waste) was able to produce the highest production, namely the final weight (0.59 g / head). and the final length (2.39 cm / head) with a total maggot production of 367.8 g / unit. but the type of media treatment P3 (market waste) produced the highest maggot protein content of 60.81%. The highest maggot decomposability was found in P4 (restaurant waste)
Isolation of Bacillus thuringiensis from Type B Tidal Lands
Full text linkBacillus thuringiensis is a disease-causing bacterium in insects that is used to control insect pests that attack crops, both crops and horticultural crops. This bacterium can be isolated from plant residues that have become compost, infected insects, and soil. Isolation was carried out to take bacteria from their natural environment and grow them in artificial media. In swamps, there are important microorganisms involved in the decomposition of organic matter. The microbes that play a role consist of fungi and bacteria, for instance, those are found in rice plantations in Barito Kuala swamps, which include the Actinomycetes, Bacillus, Cromobacterium, and Pseudomonas bacteria groups. B. thuringiensis is widely distributed in nature but is rare due to the many different Bacillus isolates. Therefore, it was necessary to conducted research to determine the presence of B. thuringiensis in plant root areas in more specific soils to increase the possibility of finding B. thuringiensis. This study aims to determine the number of B. thuringiensis isolates obtained in type B tidal land ecosystems. This research was conduct from December 2021 to June 2022 at the Integrated Laboratory and Production Laboratory, Department of Agroecotechnology, Faculty of Agriculture, University of Lambung Mangkurat. This research used a descriptive method. Soil collection was carried out by purposive sampling (sampling technique with certain considerations) in the planting area in tidal land type B. Soil samples were taken from 3 places as a comparison, namely in the rice planting area, orange planting area, and banana planting area B. The parameters observed in this study were the number of colonies, the macroscopic and microscopic shape characteristics of the bacteria, the gram of bacteria, and the test of the killing power of bacteria against P. xylostella insects. Based on the parameters that have been observed, the highest number of colonies was found in citrus plantation samples, with 98 colonies