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Journal of Marine Research and Technology
Published by Universitas Udayana
ISSN : 26210088     EISSN : 26210096     DOI : 10.24843/JMRT
Core Subject : Science,
Earth & Planetary Sciences
The Journal of Marine Research and Technology (JMRT) (p-ISSN 2621-0088 | e-ISSN 2621-0096) is an open access, scientific journal that aims to publish the dynamic of the coastal and ocean, its ecosystems and coastal environment, and Observation technology. JMRT is a peer-reviewed journal publishes original articles and critical reviews of current issues in marine science and technology. The range of topics extends from research in Oceanography, marine habitats, living resources, management and conservation issues related to the marine resources. This includes remote sensing, ocean modelling, geographic information System (GIS), coastal engineering, coastal processes, marine instrument, ecology, genetics, marine pollution, fisheries, marine ecotourism, and it's economic and social. JMRT provides a forum for the discussion and sharing all the latest issues in marine research and technology. Editorial manager system is an online manuscript submission, review and tracking system. JMRT is issued twice a year, each February and August.
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Articles 6 Documents
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Search results for , issue "Vol 2 No 1 (2019): FEBRUARI 2019" : 6 Documents clear
PERBANDINGAN LAJU PERTUMBUHAN RUMPUT LAUT (EUCHEUMA COTTONII) DENGAN MENGGUNAKAN SISTEM BUDIDAYA CO-CULTURE DAN MONOCULTURE DI PERAIRAN PANTAI GEGER, NUSA DUA, BALI Riris Christiani Gultom; I Gusti Ngurah Putra Dirgayusa; Ni Luh Putu Ria Puspitha
Journal of Marine Research and Technology Vol 2 No 1 (2019): FEBRUARI 2019
Publisher : Department of Marine Sciences, Faculty of Marine Science and Fisheries, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (461.032 KB) | DOI: 10.24843/JMRT.2019.v02.i01.p02

Abstract

Seaweed is a low level plant that can not be distinguished between the roots, stems and leaves so-called thallus. In seaweed cultivation process, seaweed farmers use monoculture system. But with the growing knowledge there is a more profitable system that is with the co-culture system. The co-culture system is a cultivation system that combines species from different trophic levels in the same system and considers environmental sustainability. The existence of co-culture system is believed to help fishermen in increasing income and overcome environmental problems due to the results of cultivation activities that are not utilized. This research was conducted for 42 days on May 2, 2018 - June 13, 2018 in the waters of Coast Geger, Nusa Dua, Bali. The method used is the RAL method (Completely Randomized Design) using three treatments and three replications. The monoculture cultivation system as a control and co-culture cultivation system with different density of abalone is 20 and 40 abalone consists of 10 seeds of seaweed with the same initial weight of 100 grams. The results showed that the highest seaweed-specific growth rate between the monoculture system and the co-culture system in cycles 1 and 2 was found in the co-culture system, whereas in cycle 3 the co-culture system experienced lower growth rate due to competition between thallus, the epiphytes attached to the cultivation net of co-culture, large enough current, and the loss of abalone that allegedly taken by the community around the coast. In this study there is also a tip of the thallus that is susceptible to ice-ice disease due to the presence of fish predators.
EFEK PEMBERIAN JENIS PAKAN YANG BERBEDA TERHADAP PERTUMBUHAN ABALON (Haliotis squamata) DI PANTAI GEGER, DESA PEMINGE, BALI Cindi Ayu Lestari; I Wayan Gede Astawa Karang; Ni Luh Putu Ria Puspitha
Journal of Marine Research and Technology Vol 2 No 1 (2019): FEBRUARI 2019
Publisher : Department of Marine Sciences, Faculty of Marine Science and Fisheries, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.826 KB) | DOI: 10.24843/JMRT.2019.v02.i01.p03

Abstract

Abalon is one of the marine commodities that have high economic value to foreign countries. The abandoning market demand for abalons causes a decline in abalone populations in nature due to exploitation. To meet market needs without affecting the abalone population in nature, cultivation is carried out. Success in the cultivation of abalone one of them is determined by the control of feed. This study aims to determine the effect of different types of feed on the growth of Haliotis squamata abalone. Types of food that can be used as abalone foods are Euchema cottonii and Gracilaria sp. with a feeding percentage of 20% of the abalone weight. This study was conducted for 45 days at Geger Beach, Nusa Dua, Bali using a completely randomized design method consisting of three treatments and three replications. The results showed that the highest value of the specific growth rate was in the T3 treatment using Gracilaria sp. the value is 0.25%, then followed by T1 treatment which uses Euchema cottonii feed with a value of 0.07%, while the lowest is in T2 treatment using combination feed Euchema cottonii and Gracilaria sp. whose value is 0.01%. The highest survival rate in T3 treatment using Gracilaria sp. value was 68%, followed by niali on T2 treatment using combination feed Euchema cottonii and Gracilaria sp. that is 58%, and the lowest in T1 treatment using Euchema cottonii feed the value is 43%. Water quality parameters including temperature, salinity, DO, pH, nitrate flow velocity, and phosphate do not reach the quality standards for biota.
Laju Penjalaran Rhizoma Lamun Thalassia hemprichii, Cymodocea rotundata, Halophila ovalis, dan Halodule uninervis yang Ditransplantasi Di Serangan Utara, Bali Kadek Weda Ari Bhawana; Elok Faiqoh; I Gusti Ngurah Putra Dirgayusa
Journal of Marine Research and Technology Vol 2 No 1 (2019): FEBRUARI 2019
Publisher : Department of Marine Sciences, Faculty of Marine Science and Fisheries, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (517.466 KB) | DOI: 10.24843/JMRT.2019.v02.i01.p04

Abstract

Seagrass is also one of the carbon sinks at sea, and as a catcher of sediments that go to sea so seagrass can be used as a balancer of all marine ecosystems. In the seagrass ecosystem, associate various types of marine biota of significant value with a very high level of diversity. Seagrass is affected by environmental conditions and human activities. Serangan island from the 70s already existing tourism that developed there such as Turtle Waching and Dugong Waching. Dugong (Dugong dugon), a plant-eating mammal or herbivore mammal, the main food is seagrass. the existence of a reclamation project on Serangan Island caused many habitats and marine biota around Serangan Island waters to be damaged and lost, especially seagrass plants. This research to determine the seagrass survival rate if transplanted in the North Serangan waters region and to determine the growth rate of Rhizoma seagrass with Species Thallasia hemprichii , Cymodocea rotundata, Halodule ununervis, and Halophila ovalis transplanted in the waters of North Serangan. This research was conducted in the month of February - April 2018. The research consisted of two stations with one station in a dense region of human activity and the station 2 without any human activity. Seagrass transplantation is done by using frame made of iron with size 1x1 meter. The results showed that at station 1 the level of seagrass survival was lower than station 2, it was caused by the dense human activity at station 1. So was the rate of growth at station 1 lower than station 2. This could also be due to the water quality which is lower at station 1.
Identifikasi dan Kelimpahan Bakteri Enterococcus spp. pada Mucus Karang di Perairan Pemuteran, Bali Dewa Ayu Mira Prabaswari; I Dewa Nyoman Nurweda Putra; Widiastuti Karim
Journal of Marine Research and Technology Vol 2 No 1 (2019): FEBRUARI 2019
Publisher : Department of Marine Sciences, Faculty of Marine Science and Fisheries, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.027 KB) | DOI: 10.24843/JMRT.2019.v02.i01.p05

Abstract

Letak geografis Indonesia di area segitiga karang dunia menyebabkan tingginya jumlah jenis karang keras. Terumbu karang memiliki berbagai fungsi yaitu sebagai habitat berbagai biota laut seperti tempat pemijahan dan pelindung alamiah dari bahaya abrasi. Pencemaran domestik memiliki kontribusi yang relatif besar terhadap kerusakan terumbu karang. Aktivitas manusia dan aliran sungai membawa partikulat dari daratan berupa sedimen ataupun bahan organik yang masuk kedalam laut sehingga dapat mengakibatkan terjadinya pencemaran limbah domestik. Bakteri Enterococcus spp. adalah bakteri yang ditemukan pada limbah domestik yang dijadikan indikator pencemaran limbah domestik. Metode pengambilan sampel mucus karang dilakukan dengan metode purposive sampling, dimana penentuan ini berdasarkan keberadaan terumbu karang dan kondisi pesisir yang berbeda-beda. Pengambilan sampel mucus karang di setiap stasiun yaitu dengan memilih secara acak 3 genus karang dalam masing-masing 3 ulangan transek sabuk 20 x 2 m. Sampel mucus karang sebanyak 10 ml akan diinokulasi pada media selektif Slanetz and Bartley. Keberadaan bakteri Enterococcus spp. yang tumbuh pada media ditunjukkan dengan koloni yang tumbuh berwarna merah. Identifikasi bakteri dianalisis menggunakan analisis deskriptif, sedangkan kelimpahan bakteri dianalisis dengan Anova satu arah untuk mengetahui perbedaan kelimpahan bakteri di setiap stasiun. Hasil penelitian ini adalah bakteri Enterococcus spp. teridentifikasi di semua stasiun pengambilan sampel mucus karang yang ditandai dengan pertumbuhan koloni bakteri berwarna merah pada media selektif dan tidak terdapat perbedaan kelimpahan bakteri Enterococcus spp. antar genus karang yang berbeda di setiap stasiun pengambilan sampel yang menunjukkan pencemaran domestik tersebar merata pada semua jenis karang.
Diversitas Makrozoobentos di Kawasan Ekosistem Mangrove Berdasarkan Perbedaan Substrat Desa Pejarakan, Kecamatan Gerokgak, Buleleng Ratih Permitha Syury; IGB Sila Dharma; Elok Faiqoh
Journal of Marine Research and Technology Vol 2 No 1 (2019): FEBRUARI 2019
Publisher : Department of Marine Sciences, Faculty of Marine Science and Fisheries, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (963.311 KB) | DOI: 10.24843/JMRT.2019.v02.i01.p01

Abstract

Kawasan ekosistem mangrove Desa Pejarakan merupakan kawasan yang sedang diusulkan sebagai kawasan konservasi oleh kelompok masyarakat NCF Putri Menjangan, Kecamatan Gerokgak. Hal ini membuat diversitas biota laut salah satunya makrozoobentos dapat berkembang biak dengan baik. Selain itu, adanya vegetasi mangrove dan perbedaan substrat juga mempengaruhi diversitas makrozoobentos. Pada penelitian ini digunakan metode purpossive sampling untuk menentukan lokasi pengambilan sampel mangrove yang diasumsikan dengan adanya perbedaan substrat di setiap stasiunnya seluas 10 x 10 M, dalam transek tersebut dilakukan pengambilan sampel makrozoobentos dengan transek 1 X 1 m. Perbedaan substrat ini mempengaruhi nilai diversitas yang didapatkan, pada nilai komposisi jenis yang didapatkan untuk vegetasi mangrove tertinggi terdapat di stasiun 3 pada genus Sonneratia sebesar 62%. Sedangkan untuk nilai kepadatan dan diversitas mangrove tertinggi terdapat di stasiun 2 dengan nilai kepadatan 0,09 ind/m2 dan nilai diversitas sebesar 0,937. Lain halnya dengan nilai kepadatan dan diversitas tertinggi untuk makrozoobentos terjadi pada stasiun 1 dengan nilai kepadatan makrozoobentos sebesar 25,50 ind/m2, sedangkan untuk nilai diversitas makrozoobentos sebesar 2,865. Oleh karena itu, kategori diversitas untuk mangrove termasuk kategori diversitas rendah berbanding terbalik dengan keseluruhan nilai diversitas makrozoobentos yang termasuk dalam berbagai kategori diversitas sedang. Oleh karena itu, kondisi ini diasumsikan bahwa dengan adanya perbedaan substrat yang terjadi pada stasiun 1 berupa pasir berlempung, stasiun 2 berupa lempung berdebu dan stasiun 3 berupa lempung ini, dapat mempengaruhi perbedaan jenis yang terdapat di setiap stasiun. Hal ini dikarenakanan setiap makrozoobentos memiliki toleransi hidupnya masing-masing untuk menyesuaikan diri dengan habitatnya.
COVER VOL 2 NO 1 admin JMRT
Journal of Marine Research and Technology Vol 2 No 1 (2019): FEBRUARI 2019
Publisher : Department of Marine Sciences, Faculty of Marine Science and Fisheries, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (371.169 KB)

Abstract

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