The mangrove ecosystem is one of the ecosystems that has an important role in Indonesia's coastal areas, one of which is on Los Island. Los Island is located in Senggarang Village, Tanjungpinang City, Riau Islands Province. Los Island is a small island with mangrove vegetation around the edges. This research was carried out in March-April 2024. The research location was in the waters of Los Island, Tanjungpinang City. The method used is the direct service method in the field. Determination of sampling locations was carried out using a systematic random sampling method. sampling from members of a population where the first element is selected randomly and the next element is selected systematically based on certain patterns. In sampling litter production, 10 points were taken at a distance of 200 m. Based on the results of the analysis of mangrove litter production, the average value of litter production during the 4 weeks of observation on Los Island, Tanjungpinang City was 38.24 g DW/m². In week 1 the average value of mangrove litter production was 72.12 g DW/m². In week 2 the average value of mangrove litter production was 74.67 g DW/m². In weeks 3 and 4, the average value of mangrove litter production was 72.86 g DW/m² and 93.30 g DW/m². The value of the mangrove decomposition rate is based on the results of the analysis of litter decomposition calculations with an average value in weeks 1 and 2 of 1.78 g/day, in week 3 of 1.70 g/day, and in week 4 a value of 1.87 g/day.

This study aims to develop locally sourced, self-produced feed for Nile tilapia (Oreochromis niloticus) in Kokoda District, West Papua, to reduce high production costs due to reliance on commercial feed. A survey of local raw materials identified the potential use of sago flour, sembilang fish, shrimp heads, and banana peels as feed ingredients. The feed formulation was designed with a protein content of 31% and tested through proximate analysis and a 42-day growth trial of Nile tilapia using a Completely Randomized Design (CRD) compared to commercial feed. Results showed that self-produced feed resulted in lower weight and length growth compared to commercial feed, with higher feed conversion ratio (FCR) efficiency in commercial feed. However, the self-produced feed still demonstrated potential as an economical alternative with nearly equivalent fish survival rates. The study concludes that with further adjustments, self-produced feed can become a sustainable solution for tilapia farmers in remote areas.

This study aims to see the empowerment efforts of coastal women in improving the family economy in Margasari Village, Labuhan Maringgai District, East Lampung Regency. This study used a qualitative research type with an ethnographic approach. The focus of the study was on four Poklahsar in Margasari Village. Data collection techniques were carried out through observation, interviews, and documentation studies. Then, qualitative data analysis was carried out with the stages of data reduction, data presentation, and data collection. The results of the study are that the empowerment of coastal women in Margasari Village through Poklahsar is carried out by providing various training, workshops, mentoring and assistance, both capital and production support facilities. Although the empowerment carried out has been quite massive, the impact of increasing income for families is still not significant because the marketing of processed food products produced by Poklahsar has not been optimal.

The Rainbow Kurumoi ornamental fish (Melanotaenia parva) is an endemic species of Indonesia, originating from Lake Kurumoi in Papua, and is currently experiencing high levels of exploitation. Immediate efforts to rescue and conserve the Rainbow Kurumoi fish are crucial to prevent its extinction. The development of Rainbow Kurumoi fish farming has significant potential, particularly in South Sorong, which serves as a center for the germplasm of the Rainbow Boesmani fish species. This study was conducted to evaluate the growth and survival of Rainbow Boesmani fish using different feeding programs and water quality management to enhance their production. The research was designed using a Completely Randomized Design (CRD) with four treatments and three replications. The treatments tested were: A (pellets), B (Artemia), C (hair worms), and D (water fleas). Data were analyzed using a CRD, and if significant differences were found, a further Duncan’s test was performed. The results indicated that different feeding treatments had a significant effect on the absolute weight growth of Rainbow Kurumoi fish from the third to the sixth week. The feeding treatments also significantly influenced the increase in the absolute length of the fish from the first to the sixth week. The survival rate of the Kurumoi fish, when fed different diets, ranged from 70% to 83%, which is considered to be in the good category.

The attraction of a tourist attraction must have its own uniqueness and development strategy compared to other tourist attractions. The research aims to identify types of tourism; analyze tourist attractions with ADO-ODTWA; and develop strategies for the development of tourist areas through IFE and EFE Analysis with a SWOT matrix approach at Muara Indah Beach. The research was conducted from November to December 2024 at Muara Indah Beach, Tanggamus Regency. Data collection techniques are carried out by observation, questionnaires, interviews, and literature studies. The types of tourist attractions at Muara Indah Beach are divided into types of nature tourism, cultural tourism, and sports tourism. The results of the ADO-ODTWA assessment obtained The results of the assessment show that the variables of Attraction of Tourism Objects and Service Management fall into the “Not Feasible” category; variables of Accessibility, Conditions Around the Area, Supporting Facilities and Infrastructure, and Availability of Clean Water, fall into the “Feasible” Category. The results of the entire assessment of the ADO-ODTWA variable Muara Indah Beach are in the “Good to Develop (B)” category. The development strategy found that the IFE and EFE analysis is in the Grow and Develop position.  Internal Factors and External Factors found that the score results are >2. The most important strategy to be carried out at Muara Indah Beach is the SO (Streght Opportunity) Strategy. SO strategies (1) build partnerships with relevant agencies; (2) maximize tourism opportunities; and (3) increase the number of visitors to the beach.