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Red tilapia (Oreochromis niloticus) is a freshwater fish known for its high tolerance to environmental conditions, low water quality, and ability to adapt well to various situations. Data from the Ministry of Marine Affairs and Fisheries shows that tilapia production in Indonesia has increased significantly, from 1,172,633.38 kg in 2020 to 1,300,529.23 kilograms in 2021, with a percentage increase of 10.90%. The community strongly influences the local economy and food security. Tilapia farming is widely chosen because it has a stable selling price and fast growth. Many farmers have chosen Tilapia farming as their primary source of livelihood. This research aimed to study the socio-economic conditions, difficulties, and development opportunities of tilapia farming in the community. The results show that although this business contributes significantly to family income, there are several constraints, such as fluctuating market prices, limited access to technology, and low aquaculture skills. In addition, the success of aquaculture is also affected by environmental conditions and resource availability. Therefore, a development plan that includes training, access to capital, and improved infrastructure is needed to improve yields and the welfare of the tilapia farming community.

The South Coast of East Java is one of the areas that has marine and fisheries potential. This is utilized by local residents as a source of livelihood. To maximize this potential, it is necessary to know how the water quality in an area. The water quality of a water body can be known through the measurement of chlorophyll-a concentration and sea surface temperature with the help of remote sensing technology. This study aims to analyze the comparison of Aqua MODIS and VIIRS images on mapping chlorophyll-a concentration and sea surface temperature with the help of the SeaDAS application whose data is downloaded through the NASA oceancolor website. To map chlorophyll-a concentration and sea surface temperature, an analysis method using the most optimal mathematical model is needed. The results of the Aqua MODIS satellite image chlorophyll-a concentration research in the year (2020-2024) in the South Coast of East Java has an average of 0.24282 mg/m3, 0.19144 mg/m3, 0.51777 mg/m3, 0.37524 mg/m3, and 4.0542 mg/m3. The highest average chlorophyll-a concentration value of Aqua MODIS satellite imagery occurred in May 2024. This condition indicates that the water quality in the South Coast of East Java is low. While the chlorophyll-a concentration of VIIRS satellite images in the year (2020-2024) in the South Coast of East Java has an average of 0.23197 mg/m3, 0.31974 mg/m3, 0.19304 mg/m3, 0.38974 mg/m3, and 1.58583 mg/m3. The highest average chlorophyll-a concentration value of VIIRS satellite imagery occurred in May 2024. This condition indicates that the water quality in the South Coast of East Java is low.

The land holds significant importance for the people in Indonesia and is one of the country's natural resources. As an agricultural country, a large portion of the Indonesian population relies on agriculture as their primary source of livelihood. Farming, which involves cultivating land to produce food, has long been a cornerstone of rural economies. Notaries and Land Deed Officials (PPAT) play a critical role in Indonesia’s legal and land administration systems. Notaries, governed by Law No. 2 of 2014 and Article 1868 of the Indonesian Civil Code (KUHPerdata), are authorized to create authentic deeds, ensure legal certainty, and maintain document custody. Meanwhile, PPATs, under Government Regulation No. 37 of 1998 and Law No. 4 of 1996, are responsible for drafting deeds related to land registration and mortgage rights, including transactions involving the sale, purchase, and transfer of land rights. The distinct authority of notaries and PPATs is clearly defined by the relevant regulations, with the Constitutional Court Decision No. 5/PUU-XII/2014 affirming that their jurisdictions do not overlap, thereby safeguarding legal certainty in land administration.

The Rungan River area in Palangka Raya City has abundant natural resources potential, including fisheries, agriculture, and other resources. The local community heavily relies on these natural resources as their main source of livelihood. This research examines the management of natural resources in the area as a source of economic income for the local community by combining descriptive and qualitative methods. The research findings show that the community possesses local wisdom in managing and preserving natural resources, such as Pasah Patahu, Santo Nazar, and technology-based management. However, there are still challenges, such as suboptimal utilization of natural resources, lack of support from the government and related institutions, and underutilization of technology. Further efforts from various parties are needed to optimize the management of natural resources in order to sustainably increase the economic income of the local community.