bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mud crabs (Scylla olivacea) fattening in recirculating aquaculture system (RAS) using vertical gallons crab house with different feed types
Authors: Usman Zainal , Alauddin Muhammad Hery Riyadi , Anton  , Yunarty  , Ihwan  , Syahrir Muhammad , Budiyati  , Supryady  , Leilani Ani , Saridu Siti Aisyah , Wahid Eriyanti , Renitasari Diana Putri , Rasnijal Muhammad , Hardianto Toto , Regan Yip , Kurniaji Ardana 
Published: November 2024

Abstract
Long maintenance periods, availability of cultivation containers, and water quality management are generally issues in mud crab (Scylla olivacea) aquaculture. Recirculating aquaculture system (RAS) technology can be chosen as a solution to these problems. The objective of this research is to evaluate the effect of different feed types on the growth and survival of mud crabs reared using RAS. The RAS design utilizes small water gallons (20 L volume) as crab house arranged vertical on iron racks and connected with gravity-fed water systems. The water filter consists of charcoal, coral stone, sand, and seaweed (Gracillaria verrucose) installed at the bottom of the rack. The filtered water was pumped to the topmost part of the water gallon using a pump. The feed treatments consist of (A) beef liver, (B) tilapia fish, (C) squid, (D) clam meat. The results show that different feed types do not significantly (P<0.05) affect the growth and survival of both male and female mud crabs. Over a period of 14 days, the weight gain of crabs in all treatments ranged from 7.08 to 11.15 g for males and 7.61 to 9.91 g for females. Survival rates ranged between 65% and 80% for males and between 85% and 95% for females. Water quality during the rearing period was at a temperature of 26-31°C, pH of 6.33-7.87, and salinity of 15-31 ppt. RAS in this study can be used for the short-term cultivation of mud crabs in limited space with optimal water quality.
Water quality assessment and pollution status analysis in Toro Rivers, Bone Regency
Authors: Anton  , Ihwan  , Syahrir Muhammad , Yunarty  , Renitasari Diana Putri , Kurniaji Ardana 
Published: November 2024

Abstract
This study aimed to assess the water quality in Toro River and to analyze the status of pollution using the Storet method according to the regulation on quality standards in Minister of Environment Decree number 115 of 2003 and the quality standards of Minister of Environment Decree No. 179 of 2004. The research was carried out for 3 months from September to November 2022, in the Toro River, Toro Village, Bone Regency. Data was taken directly in the field consisting of water samples at 10 stations and soil sediments at 5 stations randomly. The results showed that the range of water quality parameter values observed were Ammonia 0.12-0.31 mg/L, Phosphate 0.0021-0.0082 mg/L, Nitrate 0.16-2.41 mg/L, Nitrite 0.0055-0.018 mg/L, Cd 0.001-0.013 mg/L, Pb 0 mg/L, Temperature 32.1-34.4°C, DO 2.48-8.14 mg/L, pH 6.33-8.14, salinity 3-25 ‰, BOD 2-5.12, COD 6.96-81.69 mg/L, TOM 14.26-46.79 mg/L. Based on a comparison of data per parameter with water quality standards from Minister of Environment Decree number 179 of 2004, it shows that the Nitrate and Cadmium (Cd) parameters have exceeded the water quality standard thresholds. Based on the analysis of the Storet value system, it was known that the waters of the Toro River are included in the class C category, namely moderately polluted with a score of-28. Pollution control in the Toro River needs to be done in order to maintain environmental conditions that are not polluted.
Applications of microalgae for bacterial disease prevention on tiger shrimp (Penaeus monodon) in the hatchery
Authors: Nurbaya N , Kadriah IA K , Nurhidayah N , Susianingsih E , Tampangallo B R , Rosmiati R 
Published: November 2024

Abstract
Vibriosis, White Spot Syndrome Virus (WSSV) and Monodon Baculo Virus (MBV) cause up to 100% of shrimp mortality. This study aims to explore the microalgae used to avoid bacterial diseases in tiger shrimp. Using three treatments, the study used whole cells and microalgae extract from Phaedactylum tricornutum. Each treatment has three replications: A) control without the addition of microalgae, B) addition of whole microalgae cells, and C) addition of microalgae extract. Rearing of larvae was carried out for 19 days until postlarval 12. Microalgae were applied on the larvae in the phases of Zoea2, Zoea3, and Mysis2 to PL 10, with the density of whole cell microalgae and extracts 104-106 cells / mL. The parameters measured were the microalgae density and Vibrio bacteria on rearing media. Bacterial density and water quality were observed at each larval phase change. The results showed that administering P. tricornutum, whole cells, and extracts can suppress the Vibrio population and Total Vibrio Bacteria (TBV) / Total Plate Count (TPC) ratio. The bacterial population in the larvae-rearing water was lower than the control, and tiger shrimp survival was higher with the application of P. tricornutum.
Application of organic fertilizer originated from shrimp pond solid waste using different bioactivators in milkfish nursery Chanos chanos (Forsskal. 1775)
Authors: Suwoyo Hidayat Suryanto , Utama Unggul Adi , Yanto Subari , Mustarin Amirah , Makmur  , Suwardi  , Sahrijanna Andi 
Published: November 2024

Abstract
Pond sediment was rich in nitrogen, phosphor, potassium, organic matter, and other macro and micronutrients. The composting method can convert pond solid waste into organic fertilizer. This study aimed to assess the impact of applying organic fertilizer derived from solid waste from shrimp ponds, using various bio activators, on the growth and survival of milkfish in nurseries Chanos chanos (Forsskal. 1775). The study utilized a completely randomized design (CRD) comprising of five treatments, with each treatment being replicated three times. The treatment combination consists of an organic fertilizer made of 2.000 kg/ha of pond solid waste, 200 kg/ha of Urea, and 100 kg/ha of SP-36. using four different bioactivators: BIOTAN-28 (A), TR-04 (B), EM-4 (C), ISO (D), and organic fertilizer without bioactivator as control (E). Milkfish was reared in 30 days. The variables under observation included the plankton’s composition and abundance, the growth and survival rate of milkfish, and water quality. The study’s findings demonstrated that utilizing organic fertilizer obtained from shrimp pond solid waste, in conjunction with the application of ISO bioactivator, provided better growth of natural feed, weight growth, and survival rate of milkfish compared to the control. There was no statistically significant difference (P>0.05) in the growth and survival rate of milkfish across the treatments. The milkfish growth ranged from 0.35-0.69 g/ind, with a survival rate ranging from 93.33-98.89%. The study determined that the water quality is suitable for the growth and survival rate of juvenile milkfish.
The effectiveness of using blue underwater light emitting diode (U-LED) on fixed lift net in Pangkep waters
Authors: Amir M I , Kurnia M , Hajar M A I , Jaya I , Rais M , Hajar M I 
Published: November 2024

Abstract
Fixed lift net is a traditional fishing gear that is still widely operated by Indonesian fishermen, especially in Pangkep waters, South Sulawesi Province. In the operational process, this fishing gear needs lights as a technological tool to attract the fish to enter the catchable area. The use of conventional types of lamps by fishermen is considered ineffective and inefficient. This research applies Underwater Light-Emitting Diode (U-LED) which are known to be more energy efficient and long-lasting, thereby minimizing operational costs. This research aims to analyze the catch composition of fish caught and the effectiveness of using blue U-LED (105-watts) as a fishing aid in its application on the fixed lift net. The results show that the use of blue U-LED has a 100% effectiveness rate in attracting sardines to enter the catchable area, followed by 49% for squids, 33.5% for yellowtail scads, 27.9% for common ponyfish, and 22.4% for indian anchovies. The composition of fish species caught was sardine (31%), squid (15%), yellowtail scad (10%), common ponyfish (9%), and indian anchovy (7%).
Prevalence and intensity of ectoparasites on farmed Tilapia in Sarawak Region, Malaysia, and their relationship with the water quality status
Authors: Baharudin Salwati , Harun Arif Azizi Che , Zakariah Mohd Ihwan , Wahab Wahidah , Alam Jamaluddin Fitrah 
Published: November 2024

Abstract
This study shows recent infestations of ectoparasites on farmed tilapia (Oreochromis sp.) from the Sarawak region, Malaysia, and their relationships with the water quality in the area. The prevalence and mean intensity were investigated for a total of 120 tilapia obtained from four distinct farms in 2022 and 2023. The entire tilapia specimens were infected with at least one ectoparasite species, showing a 100% prevalence rate of ectoparasite infestation. Six species of protozoans (Trichodina sp., Ichthyopthirius multifiliis, Ichthyobodo sp., Oodonium sp., Epistylis sp., and Ciliates sp.) and two species of monogeneans (Dactylogyrus sp. and Gyrodactylus sp.) were observed. The most intense ectoparasites recorded were Ciliates sp., Trichodina sp., and Dactylogyrus sp. Trichodina sp. and Dactylogyrus sp. were recorded higher in tilapia collected from Kuching district, while Ciliates sp. infected the tilapia from Miri district the most. The lowest intensity rates were recorded for Ichthyobodo sp. and Oodinium sp., where Ichthyobodo sp. was only observed on tilapia from Mukah district while Oodinium sp. was only recorded in fish from Miri district. The highest rates of infestation prevalence and intensities of ectoparasites were shown in the station containing highest concentrations of phosphate (PO4
3-), total ammonia nitrogen (NH3
−N), and nitrite (NO2
−). The results also demonstrated high ectoparasites infestation on the samples obtained from the pond with high temperature, dissolved oxygen, and pH readings. These conclude the positive relationship of the prevalence and intensity of ectoparasites infestations with the water quality of the water body. The information provided might be useful to the fish farmers in understanding the dynamics of tilapia parasites in the relevant area.
The effect of natural feed, artemia, on the growth of Tiger shrimp post larvae
Authors: Nawang A , Haryati  , Laining A , Tenriulo A , Parenrengi A 
Published: November 2024

Abstract
Providing sufficient feed and in accordance with nutrient requirements are required to support the growth of shrimp post larvae. This study aimed to evaluate the growth response of tiger shrimp post larvae fed with natural food of Artemia sp. The PL1 tiger shrimp post larvae test animal at the beginning, with a density of 30 individuals/liter, was maintained until PL12. Using a completely randomized design with three treatments and four replications, i.e., Artemia sp Instar I (treatment A), Artemia sp instar II (treatment B), and a combination of 50% treatments A and 50% treatmens B (treatment C). It showed that treatment A resulted in the best relative length growth rate (7.68%±0.38) and was significantly different from treatment B (6.52%±0.64) and had no significant effect from treatment C (6.88%±0.50). The relative growth rates (RGR) in treatments A, B and C were 44.27%±4.29, 39.58%±4.50 and 38.54%±9.99 respectively and had no significant effect. The use of Artemia sp. instar I and a combination of both provided the best relative length growth compared to the use of Artemia sp instar II, with natural feed consumption levels reaching 95.3% and 94.7%, respectively.
Mangrove rehabilitation opportunity analysis in Indragiri Hilir mangrove silviculture landscape, Riau Province, Indonesia
Authors: Massa Yusran Nurdin , Idrus Muhammad Rijal , Saru Amran 
Published: November 2024

Abstract
Indonesia has targeted 600,000 hectares for mangrove rehabilitation but faces the global challenge of low rehabilitation success rates due to site unsuitability. This study examines mangrove rehabilitation opportunities in Indragiri Hilir, which are degraded due to logging, land use change, and increased salinization due to climate change. Geospatial analysis was used to identify potential areas using data on mangrove loss and Alooded vegetation, validated by ground truthing. These areas were overlaid with datasets of water occurrence, tidal Alats, and coastlines. Analysis results showed a potential area of 11,178 ha out of 117,400 ha of Indragiri Hilir mangroves, including low density mangrove typologies, open land, eroded mangroves, ponds, and salinized coconut plantations. Ranking of rehabilitation opportunities based on forest status, land use, and mangrove cover. Only 26% of the total potential area was classiAied as high, 69% as medium, and 5% as low. Potential areas are generally located in Other Use Areas in the form of salinized coconut plantations and other land uses (52%), requiring tenure negotiations with the community. Recommended techniques include assisted natural revegetation (ANR), stress removal, and direct planting for low density mangrove and open land typologies; erosion control techniques for eroded mangroves; and minor hydrological rehabilitation for salinized coconut plantations, ponds, and open land. Strategic recommendations are based on stakeholder diagnosis of key success factors. Aspects of motivation and enabling conditions are generally present. Technical knowledge, appropriate technical design, Ainancial incentives and feedbacks are implementation aspects that need intervention to improve the success of rehabilitation efforts.
Relationship between eddy and scads (Decapterus spp.) abundance in the northwest of Banda Sea, Indonesia
Authors: Yuniar Alfira , Zainuddin Mukti , Srioktoviana Siti Khadijah , Mustapha Muzneena Ahmad , Farhum Aisjah , Safruddin  
Published: November 2024

Abstract
Eddy phenomenon is a dynamic feature of the ocean that is known to affect the distribution and abundance of marine species including pelagic fish. Eddy acts as an important physical structure in the oceanic system that affects water temperature, nutrient availability, and primary productivity, thus shaping the distribution of prey organisms and affecting the spatial pattern of Scads (Decapterus spp.). This study aimed to examine the relationship between the abundance of scad fish and the western eddy in the Banda Sea. The data used include current speed and current patterns in March 2022, as well as logbook data on scad fish catches in the same period. The results show that there are 67 eddy events, including 31 cyclonic causes of upwelling and 36 anti-cyclonic eddy, caused downwelling events with current velocities ranging from 0.000610 -0.776512 m/s. Analysis of catch data shows that the highest catch attempt occurred on March 14, 2022, with 43 catch attempts and a total catch of 30,150 kg. Then the relationship analysis based on the eddy phenomenon showed that there was a relationship between eddy and the abundance of Scads (Decapterus spp.) characterized by the distance between the catch point and the navel of the eddy around 83.04 km with a catch production of 1,650 kg and the character indicator of the cyclonic eddy causing upwelling, in other words, upwelling affects the abundance of Scads fish.
Exploring the relationship between salinity front and the distribution and abundance of Yellowfin Tuna (Thunnus albacares) in the Western Banda Sea, Center of Indonesia Coral Triangle
Authors: Srioktoviana Siti Khadijah , Zainuddin Mukti , Hidayat Rachmat , Yuniar Alfira , Mustapha Muzzneena Ahmad , Farhum St. Aisjah , Safruddin  
Published: November 2024

Abstract
Understanding the relationship between hotspot areas and the distribution and abundance of Yellowfin Tuna (Thunnus albacares) in the Banda Sea is crucial for effective fisheries management and conservation efforts in the region. This study explored this relationship using a satellite-based analysis approach. We attempted to analyze remote sensing for sea surface temperature, salinity, and chlorophyll-a parameters using catch data in November 2020-2022 with a total of 275 fishing points. The research findings indicate that the total catch weight per vessel falls within the salinity range of 33.8-34 psu, sea surface temperature range 30-31ºC, and chlorophyll-a concentration range 0.08-0.25 mg m−3. Hotspots for Yellowfin Tuna were obtained from the salinity fronts. The distribution of Yellowfin Tuna is mainly found within a distance e of 0-20 km from the salinity front, and this area is an excellent feeding area. These hotspots can serve as indicators of the movement patterns of Yellowfin Tuna. The results of this study are expected to provide valuable insights into the spatial dynamics of Yellowfin Tuna in hotspot areas in the Banda Sea, ultimately contributing to more informed fisheries management strategies and conservation efforts in the region.
Mangrove mapping and carbon stock estimation at Taman Wisata Alam Mangrove, Angke Kapuk, North Jakarta, Indonesia
Authors: Abdurrahman U , Pratyaksa I F , Nur A A , Jeon C K , Radjawane I M , Park H S 
Published: November 2024

Abstract
Taman Wisata Alam Mangrove (TWAM) is a mangrove conservation area located in North Jakarta, Indonesia, and its existence is very important due to its various ecological benefits that ensure the sustainability of the coastal area. Recently, mangroves have been recognized for their significant carbon sequestration capabilities, thereby contributing significantly to climate change mitigation efforts. This study aims to map mangrove cover, estimate biomass and carbon stock in TWAM mangrove. TWAM mangroves were mapped using consumer-grade drones and freely available satellite imagery. In addition, a high-accuracy positioning is carried out to improve and assess the accuracy of the mangrove cover map. An allometric equation is used to estimate the aboveground biomass which can then be converted into carbon stock. The study results showed that the height of the mangrove canopy in TWAM was 8.77 ± 4.05 m, while mangrove cover showed an increase over the last 10 years with an average rate of about 2.9 ha/year. The mangrove ecosystem at the study site has been estimated to have aboveground biomass and carbon stock of 129.70 tons/ha and 64.85 tons/ha, respectively. The study results show that mangrove cover and its potential carbon stock are increasing, indicating the importance of designated conservation areas in mangrove rehabilitation efforts.
Drone-Based Mapping of Coastal Area in Buleleng, Bali
Authors: Hidayatullah M F , Abdurrahman U , Pratyaksa I F , Jeon C K 
Published: November 2024

Abstract
Buleleng is located in the northern part of the island of Bali Island, which is acknowledged for its marine tourism, dolphin habitat and black sand. Drone utilization for mapping is effective and efficient for observing, investigating, and monitoring coastal areas with a high resolution and accuracy. A total of 37 mapping flight missions with consumer grade drones were carried out on October 6 – 9, 2022 covered 13.67 km of the coastal area of Lovina, Buleleng and its surroundings. High accuracy positioning is also used to improve the mapping accuracy up to 1.09 m. The aerial map covers approximately 952.77 ha with shallow water benthic coverage of 247.12 ha. This study obtained benthic characteristics of coastal benthic habitat which can be observed at a depth of 5 m. The results of the classification of aerial photos by visual interpretation showed that various classes of objects were fulfilled by various communities such as coral reefs and seagrass. In addition, artificial coral reef plantations by the Indonesia Coral Reef Garden (ICRG) activity and sea turtles were found in drone-based mapping.
The comparison of satellite image, UAV and geotagging photos for recognizing seagrass
Authors: Selamat Muhammad Banda , Ambo-Rappe Rohani , Agung Pratama A. M. 
Published: November 2024

Abstract
Seagrass beds are plant communities that have adapted to the depths of shallow seawater near the coast. These communities play a signi:icant role in the global carbon cycle, making it essential to monitor their existence. This research aims to visually compare seagrass recognition from three mapping technologies to determine their existence at the previous restoration site. We used uncrewed aerial vehicles (UAV) or drone photos taken in shallow water near Badi Island and processed them using photogrammetric software. This process created a cloud of pixels in virtual 3D space, providing a topographic map of the study area. Orthomosaic maps using stitching techniques were created, displaying shallow water landforms near the coast and various substrates. Many geotagged photos were collected at the study site. The elapse time technique, which involves taking photographs at regular intervals, was used to photograph benthic substrates at 5-second intervals following the bathymetric tracking lane, a predetermined path for underwater vehicles. The images were then geotagged using a time reference from a simultaneously operating mapsonder GNSS. This study result shows that drone orthomosaic maps and Sentinel 2 images have advantages in generating synoptic information, but the spatial resolution of drone orthomosaic photos surpasses Sentinel 2 images. Regarding detailed recognition of seagrass objects, photo geotagged techniques surpass orthomosaic drone maps and Sentinel 2 Natural Composite Color imagery. The appropriate altitude of drone photo for detail seagrass recognition was approximately 5 m or at GSD less than 10 mm/pixel. This study indicates that geotagging techniques should be used with drone mapping technology when seagrass restoration sites require preliminary information on existing species.
Antioxidant Activity and Consumer Acceptance Level of Lemon-Flavored Instant Drink Enriched with Sargassum muticum Extract
Authors: Selviani  , Husni Amir 
Published: November 2024

AbstractAn instant drink ofSargassum muticumethanolic extract with lemon flavor was made from seaweeds that were processed into powder and subjected to drying, extraction, co-crystallization, and powder sieving. The objective of this study was to produce a formula for the seaweed instant drink, which has a high antioxidant activity and is preferred by consumers. The formulas that was used in this study were sugar, lemon extract, and ethanolic extract ofS. muticum. The composition of formula including control/formula 1 (30:20:0), formula 2 (30:19:1), formula 3 (30:18:2), formula 4 (30:17:3), formula 5 (30:16:04), and formula 6 (30:15:5). The results showed that the instant drink contained antioxidant activity of 19.47 - 54.29%, total phenol of 5.09 - 10.21 mg GAE/g, total sugar of 52.12 - 60.62%, water levels of 1.55 - 2.05%, ash levels of 0.54-6.53% and the value of hedonic color 2,46-3,80 (do not like - like); hedonic flavor 1.44-3.51 (very do not like - like); and hedonic taste 2.33-3.76 (do not like - like).