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Journal of Marine and Aquatic Sciences
Published by Universitas Udayana
ISSN : 23028114     EISSN : 25497103     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Journal of Marine and Aquatic Sciences (JMAS) adalah peer-reviewed, open access journal, diterbitkan oleh fakultas Kelautan dan Perikanan, Universitas Udayana. JMAS menerbitkan hasil peneitian original dan review artikel dalam bidang ilmu kelautan, manajemen sumberdaya perairan, dan aplikasi remote sensing di bidang kelautan dan perikanan.
Arjuna Subject : -
Articles 234 Documents
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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

Abstract

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

Abstract

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

Abstract

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

Abstract

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.

Page 24 of 24 | Total Record : 234

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