Jurnal Sumberdaya Akuatik Indopasifik

Analysis of Rhizophora mucronata mangrove fruit application in enhancing mangrove tourism within the Mandar Village Community, Banyuwangi Regency

2025-04-08T03:19:06+00:00

The use of mangrove fruit to create economic benefit for the community is anticipated to bolster conservation efforts for the mangrove environment. In Mandar Banyuwangi Village, one application of mangrove fruit is its conversion into flour. This study aimed to examine the proximate composition of Rhizophora mucronata mangrove flour and evaluate the profitability of processing this flour into pastries. The analysis conducted encompasses the proximate content test (including protein, fat, water, ash, and carbs) and a profit analysis that factors in the cost of goods sold (COGS). Mangrove flour manufactured by Poklahsar “Mina UPA Karya” is derived from the fruit of Rhizophora mucronata. The processing method necessitated seven days to manufacture mangrove flour. The proximate composition of mangrove flour, as per SNI criteria, includes water and carbohydrate content, although protein, fat, and ash content are marginally over or below SNI specifications. Mangrove flour is utilized in a variety of desserts, including nastar, kastengel, cookies, almond chocolate, roses, jam sumprit, chocolate sumprit, peanut cake, and krispi brownies. Products made using processed mangrove flour in pastries yield a profit margin of 9.16% of the cost of goods sold (COGS). The R/C, BEPs, BEPq, profit, and profitability ratio of the mangrove flour processing business indicate profitability, since they go over the minimum requirements of profitability criteria.

Identification of Coral Diseases and Health Disruption in Pomalaa Waters, Southeast Sulawesi

2025-05-05T13:09:23+00:00

Coral reef ecosystems have an important role in maintaining the balance of the marine environment, providing habitat for various ecosystems, and supporting the existence of coastal and marine resources. However, coral is also vulnerable to being threatened by various diseases and health disruption which can cause a decline in its quality and sustainability. This research aims to identify types of diseases and coral health disruption, forms of coral growth infected with diseases and disruption, and analyze the prevalence of coral diseases in Pomalaa waters. Sampling was carried out at 4 observation points. The research used a survey method and a belt transect method, measuring 5 m x 50 m to identify coral diseases and health problems. The research results found 6 types of coral disease, namely Black Band Disease (BBD), White Syndromes (WS), Yellow Band Disease (YBD), Pink Plotch (PP), Ulcerative White Spots (UWS), and Red Band Disease (RBS). Coral health disruption are generally caused by coral bleaching, Crown of Thorns Starfish, Growth Anomalies, Pigmentation Response, and Sediment Damage. The decline in the quality of the aquatic environment plays a major role in the emergence of various diseases and disruption of coral health, which have an impact on physiological disturbances for coral biota. Meanwhile, the coral growth forms (lifeforms) that are infected are Acropora Branching, Acropora encrusting, and Coral Massive. The highest prevalence rate of coral disease was at station 1, while the lowest was at station 4. The high prevalence rate of corals was the result of a combination of various natural and anthropogenic factors. The low level of coral prevalence at station 4 is possible because this side is a windward area that is exposed to currents at all times, thus helping corals to clean sediment attached to the surface which may carry bacteria that cause disease and coral health disruption. Global warming, pollution, destructive fishing practices, and invasive species are some of the main causes that increase corals' vulnerability to disease and health disorders.

Analysis of Satellite Altimetry Data In Monitoring Ocean Waves in the Waters of Bengkulu Province

2025-03-05T01:56:32+00:00

Bengkulu Province, located on the west coast of Sumatra Island and facing directly onto the Indian Ocean, causes sea waves in Bengkulu Waters to be directly influenced by its geographical conditions. Sea waves in Bengkulu Waters vary due to the influence of monsoon winds and global climate. Seasonal variations in significant wave height (SWH) obtained from altimetry satellite imagery in five regions representing Bengkulu, namely Mukomuko Waters, North Bengkulu, Bengkulu City, Seluma, and Kaur can be used to monitor sea waves. The coordinates of the five regions representing Bengkulu Waters are as follows: Mukomuko is located at 2°40'20.82" S, 100°38'47.12" E; North Bengkulu at 3°20'6.55" S, 101°4'59.68" E; Bengkulu City is located at 4°0'7.57" S, 101°31'49.10" E; Seluma is located at 4°20'0.00"S, 102° 0'0.00"E; and Kaur is located at 5°0'59.65"S, 102°49'24.50"E. The data used for five years (2018-2022) is in the form of an average daily SWH every 3 hours and is processed using Panoply software to display the distribution of SWH and time series for each of the five regions in Bengkulu Waters. The results of the study show that the highest sea waves occurred in Kaur Waters, reaching 3.9 meters in August 2022 with an average wave height of 1.73 meters. Meanwhile, the lowest sea wave height occurred in Mukomuko Waters which reached 2.7 meters in January and February 2022, with an average wave height of 0.3 meters. Sea wave height in Mukomuko Waters, North Bengkulu Waters, Bengkulu City Waters, Seluma Waters, and Kaur Waters showed an increasing trend over the past five years. The relationship between significant wave height and season shows a consistent pattern.