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Distribusi Spasial Salinitas Laut Dari Citra Satelit Aquarius Di Samudera Hindia dan Hubungannya Dengan IOD I Putu Ranu Fajar Maharta; Abd. Rahman As-syakur
Journal of Marine and Aquatic Sciences Vol 9 No 1 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i01.p11

In the Indian Ocean there is a climatological oscillation phenomenon known as the India Ocean Dipole (IOD). IOD is a phenomenon that occurs due to the interaction between the atmosphere and the sea and is indicated by the presence of sea surface temperature anomalies in the western and eastern Indian Ocean. The IOD phenomenon can affect several physical-chemical parameters, one of which is salinity. To obtain salinity data, Aquarius satellite imagery is used, considering that it is very difficult to collect data in-situ. This study aims to conclude the pattern of distribution of the average salinity in the Indian Ocean every month, the rental pattern of the IOD correlation to the salinity in the Indian Ocean, and investigate the salinity anomaly that occurs during positive IOD cases in August 2012 and negative IOD cases in August 2012. June 2013. Salinity in the Indian Ocean differs between the west and east, and changes every month following the seasons that occur in the tropics. The Indian Ocean Dipole (IOD) is very influential on the distribution of salinity in the Indian Ocean because it has a fairly high correlation in almost the entire Indian Ocean. IOD causes salinity anomalies throughout the Indian Ocean, especially in the central part, when positive IOD, the salinity in the middle of the Indian Ocean will decrease, while when negative IOD, the salinity will increase.

Analisis Kesesuaian Dan Daya Dukung Kawasan (DDK) Wisata Rekreasi Pantai Di Pantai Yeh Gangga, Tabanan, Bali I Pande Made Lanang Kertadana; I Gusti Ngurah Putra Dirgayusa; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 9 No 1 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i01.p02

Yeh Gangga Beach is growing tourist attraction in Tabanan Regency, Bali. Tourism activities have a close bond with natural resources owned by the tourist area. The feasibility/suitability of a tourist area and the number of visitors that can be accommodated in tourist activities is important to know, so as not to cause disruption to both tourist activities and the environment and the direction of development. This research has a purpose, namely knowing the Tourism Conformity Index and Regional Support Capacity for coastal recreation activities. The method used is purposive field observation sampling at 4 point stations and interviewing tourists by accidental random sampling. The data used is primary and secondary data, with analysis of The Tourism Conformity Index and Regional Carrying Capacity. The results of the study obtained an average area for tourism activities of 17.98 m2 and time for tourism activities for 2 hours 14 minutes per day with a value of Regional Support Capacity of 3,273 people/day, 98,190 people/month and 1,178,280 people/year. The Tourist Conformity Index shows a value of 85.11% at station 1, 86.90% at station 2, 77.97% at station 3, and 80.35% at station 4. With this area Yeh Gangga Beach is still under carrying capacity and still suitable for beach recreation activities in accordance with the utilization zone of beach recreation tourism in Yeh Gangga.

Substitusi Pakan Yang Berbeda Pada Pemeliharaan Induk Terhadap Pemijahan Lobster Air Tawar (Cherax quadricarinatus) Farid Mudlofar; Sri Warastuti; Ridwan Salim; M. Taufik; Agus Setiawan; Hylda Khairah Putri
Journal of Marine and Aquatic Sciences Vol 9 No 1 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i01.p07

Freshwater lobster (LAT) has been widely cultivated as a commodity for ornamental shrimp and consumption. In order to maintain the stock of seeds, it is necessary to have a hatchery. One of the problems that arose in hatchery activities was gonad maturation, especially feed, because sufficient nutrients can accelerate the maturity of the broodstock gonad. Currently, the main feed for broodstock is in the form of commercial pellets, which are still universal for various types of shrimp, and pellets are not yet available specifically to stimulate the gonad maturation of LAT broodstock. The proposed solution is to determine the type of substitution for pellet feed with similar effectiveness. The aimed of this study was to obtain a type of substitute feed that can replace pellets with the same or more effectiveness in the rearing process of freshwater crayfish so that the broodstock can be used to accelerate gonadal maturity and the spawning process. This study used a completely randomized design (CRD) with four treatments and three replications: (A) Acetes indicus, (B) Pomacea canaliculata, (C) Tubifex sp., and (D) Pellet Feed (control treatment). The results of this study after the Anova analysis concluded that all treatments had a significant effect on the percentage of the number of brooders laying eggs in the first to the third week. After further Tukey’s test was carried out, it was found that treatment C significantly gave the same effect as treatment D as the control treatment, so it is recommended that Tubifex sp. as a substitute for pelleted feed with the application of plant-based feeds.

Analisis Kesehatan Terumbu Karang Berdasarkan Kelimpahan Ikan Herbivora Di Perairan Labuan Bajo Aulia Dharma Nusa Pangestu; Dwi Budi Wiyanto; I Gusti Bagus Sila Dharma; Elok Faiqoh
Journal of Marine and Aquatic Sciences Vol 9 No 1 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i01.p14

Coral reef ecosystem is one of the ecosystems located in coastal areas which has a very important role for the community, both economically and ecologically. Rock or scleractinian corals are the main building blocks of coral reef ecosystems. The connectivity of coral reef ecosystems with other ecosystems has a very large influence on the life cycle of reef fish such as spawning, rearing, foraging, and sheltering places. Herbivorous fish are that eat turf algae or macroalgae that inhibit the recruitment of new corals. Labuan Bajo is one of the tourism destinations in Indonesia, especially marine tourism. Coral reefs in Labuan Bajo cover 10.8% of the total area of coral reefs in Indonesia located in Nusa Tenggara. The purpose of this study was to determine the health of coral reefs in the waters of Labuan Bajo. This research will be carried out from September to October 2021. The coral reef data collection method used is the Underwater Photo Transect (UPT), and for reef fish is using the Underwater Visual Census (UVC) method. Based on the research results, the percentage of hard coral is 20.16% of the total stations and rubble is 32.24%. The abundance of fish in Labuan Bajo waters ranges from 1608.89 - 4600.00 ind/ha, where the average abundance is 2919.78 ind/ha. All stations got a health index value of 3, this is indicated by the low coral cover, high coral resilience, and low herbivorous fish biomass obtained.

Analisis Potensi dan Strategi Pengembangan Di Kawasan Mangrove Center Bengkak Kecamatan Wongsorejo Banyuwangi sebagai Daerah Ekowisata Layinatuzarok Layinatuzarok; I Gusti Ngurah Putra Dirgayusa; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p01

Ecotourism is one of the special tours where these activities pay attention to the environment and strongly support responsible tourism. Ecotourism is an environmental services in mangrove area of Bengkak Village, Wongsorejo District, are one of the unexploited natural resource potentials. The research aim to examine Mangrove ecosystem’s potential as an ecotourism destination and to establish a development strategy for Mangrove Center Bengkak. This research took place in the Mangrove Center Bengkak, Wongsorejo District, Banyuangi Regency, between February and April 2020. The descriptive exploratory survey method enable in this research, which included both primary data and secondary data. The interview method us in the research a list of questions (questionnaire) aimed at tourists, surrounding communities and managements. The data obtained were analyzed land suitability, area carrying capacity, implementation of the concepts of ecotourism and SWOT analysis. The result of the suitability analysis show that the Mangrove Center Bengkak, with a Tourism Suitability Index of 67 percent, is suitable to be used as an ecotourism area. Tourism activities in the Mangrove Center Bengkak area also have carrying capacity of 167 people per day. Mangrove Center Bengkak has implemented the principle of ecotourism. However, the application of these principles has not yet implemented properly. Its needs a lot improvement. The conclusion of this study is Mangrove Center Bengkak area has the potential for ecotourism development.

Karakteristik Biologi dan Kelimpahan Rajungan (Portunus pelagicus) di Sekitar Perairan Sumenep Maura Syafa Hafidah; Eka Nurahemma Ning Asih; Ika Masruroh; Moch. Yusuf Kurniawan
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p15

The high demand for the crab export market has resulted in the crab commodity experiencing a decline and leading to exploitation. Prediction of crab stocks in Sumenep Regency is minimal due to a need for further information regarding crab data. This study aims to determine the biological characteristics of the blue swimming crab (Portunus pelagicus), limiting blue swimming crab (Portunus pelagicus), and water quality characteristics around Sumenep. Research methods is observation methods or directly contact fishermen. Data collection included blue swimming crab biology, including morphometric aspects, which consisted of measurements of carapace width, carapace length, weight, and level of gonadal maturity. Data collection for water quality parameters used the insitu method at each research location. The results of this study were variations in the morphometric characters of the crabs in the distribution of the carapace width of the male crabs found in class 121-138 mm, as many as 137 individuals, while the female crabs were found in class 121-138 mm as many as 136 individuals, the distribution of size class based on the length of the female crab in class 60 .42-68.42mm as many as 112 people. The size class distribution of male crabs was mainly found in the 51.42-59.42mm class of 96 individuals; the distribution of size classes based on the weight in male crabs in the 126-157 gram class was 65 individuals. The size class of female swimming crabs was found in the 158-189 gram class; as many as 67 individuals applied for crabs around Sumenep. Based on the crab data collection at the first location, Talango was 289 ind/700 cm2, the second location was Tanjung Saronggi, 65 and/700 cm2, and in the third location, Gili Genting, there was as much as 104 ind/700 cm2. The waters of Tanjung Saronggi are a location that has more male crabs than female crabs. The air quality characteristics around Sumenep waters are categorized as optimal for blue swimming crab habitat.

Strategi Pengembangan Wisata Snorkeling di Pantai Tanjung Benoa, Bali Adhelia Fatimah Azzahra; I Wayan Restu; I Ketut Wija Negara
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p06

The island of Bali as one of the icons of Indonesian tourism is famous for its natural potential, community hospitality, cultural values and the value of the natural beauty of the sea which is packaged in marine tourism attractions. Marine tourism is a tourism activity in the form of enjoying the beauty, uniqueness, comfort and other values of marine nature and other values and water sports including the provision of facilities and infrastructure as well as other services that are managed commercially. Tanjung Benoa is a marine tourism destination that is favored as a Tourist Attraction (ODTW) in Badung Regency with water sports, snorkeling and diving attractions. This study aimed to determine the current condition of snorkeling tourism and determined the strategy for developing snorkeling tourism at Tanjung Benoa Beach. The study was conducted from January 2021 to February 2021, using quantitative descriptive methods and data analysis using SWOT analysis. The results showed that the condition of tourist visits for integrated snorkeling activities in marine tourism attractions experienced a drastic decline as a result of the 2020-2021 COVID-19 pandemic conditions. The potential for marine tourism, especially snorkeling activities in Tanjung Benoa, is coral reefs, reef fish and other marine biotas. Based on the results of the SWOT analysis, Tanjung Benoa Beach was in quadrant II. The strategy for developing snorkeling tourism on the Tanjung Benoa beach was in quadrant II or the ST (Strength and Threat) strategy. The ST strategy included maintaining the condition of coral reefs and marine life and studying the reclamation of Benoa Bay. The next strategy was to increase village rules related to health protocols and e-commerce-based marine tourism marketing.

Kandungan Nutrien Nitrat dan Fosfat Pada Air di Kawasan Estuari DAM, Badung, Bali Melani Indah Sari Manik; Ima Yudha Perwira; Ni Made Ernawati
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p11

Nitrate and phosphate nutrients are important nutrients in waters, but in conditions that exceed the limit will cause problems for the aquatic environment. One of the aquatic environments that has the potential to experience increased nitrate and phosphate content is the DAM Estuary located in Badung, Bali. This study aims to determine the current condition of nitrate and phosphate content in water in the DAM Estuary. Water sampling was carried out at 4 different station. Station 1 represents the inlet of the DAM Estuary, Station 2 and 3 represent the middle part of the DAM Estuary, while Station 4 represents the outlet of the DAM Estuary. Nitrate was measured using Hanna HI 713 Reagent, while Phosphate was measured using Salifert Nitrate KIT Reagent. In addition, temperature, pH, TDS and DO measurements were also carried out in water. The results showed that the nitrate and phosphate content in the water in the DAM Estuary was still below the water quality standard for all classes according to Government Regulation no. 82 of 2001 concerning Water Quality Management and Water Pollution Control. Other water quality parameters also show good conditions in accordance with these regulations.

Identifikasi Ikan Hiu Bycatch Di Samudra Hindia Berdasarkan DNA Barcoding Dalam Upaya Konservasi Yuni Debora Prasicilia Sitorus; Ida Ayu Astarini; I Made Antara
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p02

The most potential shark fishing area in Indonesia is the Indian Ocean. One of the fishing ports that has bycatch shark is Benoa Harbor. The purpose of this research is to identify species to determine the conservation status of bycatch shark species from body tissue samples caught in the Indian Ocean in conservation efforts. The research was conducted from January to March 2021 at Pangkalan Pengawasan Sumber Daya Kelautan dan Perikanan (PSDKP) of Benoa Harbor. This study uses an exploratory method with survey techniques. The data used in this study are primary data in the form of shark fin samples in the study area and secondary data in the form of locations where sharks are caught by fishermen based on the PSDKP database. The results showed that sharks bycatch from body tissue samples caught in the Indian Ocean based on morphological identification and DNA barcoding techniques were Prionace glauca, Isurus paucus, Sphyrna zygaena, Isurus oxyrinchus, Alopias superciliosus and Carcharhinus longimanus. Bycatch sharks from body tissue samples caught in the Indian Ocean based on morphological identification and DNA barcoding techniques have close phylogenetic relationships with the Carcharhinidae, Sphyrnidae, Alopiidae and Lamnidae families. Bycatched shark from body tissue samples caught in the Indian Ocean based on morphological identification and DNA barcoding techniques has a conservation status, near threatened for Prionace glauca species, vulnerable for Sphyrna zygaena species and Alopias superciliosus species, endangered for Isurus paucus species and Isurus oxyrinchus species, critically endangered for Carcharhinus longimanus species.

Efek Perbedaan Jenis Rumput Laut Sebagai Agen Fitoremediasi Pada Sistem Budidaya Udang Windu (Penaeus monodon) Semi Intensif Hery Irawan; Mahardhika Nur Permatasari; Ahmad Naufal Attaqi
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p16

The primary sources of organic waste in prawn ponds include feed waste from the farming process as well as ongoing metabolic activity, such as the production of urine and faeces. The increase in organic waste has an impact on reducing the water quality, one of the solutions is by implementing phytoremediation with seaweed. This research aimed to analyzed the growth and ability of seaweed Sargassum sp., Gracillaria sp., and Caulerpa sp. as phytoremediation agents to reduce organic matter in waters. This research was conducted for 68 days and used an experimental method with a completely randomized design (CRD) with 4 treatments and 3 replications. The treatment are A Sargassum sp., B Gracillaria sp., C Caulerpa sp. and D control. The results indicated that treatment C tended to decrease total organic matter (TOM) and sediment organic matter by 123.74 mg/l and 1.37%, respectively. The result also revealed that Caulerpa sp. the most effective seaweed to be used as phytoremediation organic materials in tiger shrimp farms compared to the two other seaweed species (i.e., Gracillaria sp. and Sargassum sp.). The growth of seaweed showed that there was a significant difference in specific growth of seaweed. The best specific growth rate value in treatment C was 1.37 ± 0.1%. The results of this study shown that Caulerpa sp. has more effective remediate organic matter and improve seaweed growth than Gracillaria sp. and Sargassum sp.

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Location Kota denpasar, Bali INDONESIA

Abstract

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Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota denpasar,

Bali

INDONESIA