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Journal of Marine and Aquatic Sciences

jmas
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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 5 Documents

Search results for , issue "Vol 1 No 1 (2015)" : 5 Documents clear

Spatio-Temporal Variations of Rainfall and SST Anomaly over Indonesia during ENSO Modoki Event in 2010 Abd. Rahman As-syakur
Journal of Marine and Aquatic Sciences Vol 1 No 1 (2015)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Remote sensing application is one of the best data to observing spatial and temporal situation on earth surface. Application of Tropical Rainfall Measuring Mission (TRMM) and MODIS (Moderate Resolution Imaging Spectro-radiometer) are use for spatial and temporal analysis of rainfall and sea surface temperature (SST) anomaly over Indonesia in 2010. Spatial and temporal rainfall and SST anomaly data is important, especially during El Niño–Southern Oscillation (ENSO) Modoki events, because has wide effect of social and economy in Indonesia. Monthly rainfall data measured by the TRMM 3B43 over the course of 13 years and Monthly SST collected by the MODIS was employed to analyze anomaly of rainfall and SST over Indonesia during ENSO Modoki Event in 2010. In spatio-temporal seen confirmed during ENSO Modoki in 2010 indicate an anomaly has occurred on rainfall and SST over Indonesia. The result shows that increasing of rainfall anomaly begin from April in Nusa Tenggara archipelago and eastern of Java and finish in November in those region. Meanwhile, analysis result of MODIS satellite data for SST anomaly is shown at the beginning of 2010, SST anomaly begin occurred in western of Indonesia and the biggest was happen in southern of Indonesia at August to September and finish at November. Spatio-temporal analysis TRMM dan MODIS data shows that increasing of SST anomaly could affect increasing of rainfall anomaly in those same regions excepted in January to March.

Analisis vegetasi dan struktur komunitas Mangrove Di Teluk Benoa, Bali Dwi Budi Wiyanto; Elok Faiqoh
Journal of Marine and Aquatic Sciences Vol 1 No 1 (2015)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Hutan mangrove merupakan salah satu sumber daya alam yang mempunyai nilai dan arti yang sangat penting baik dari segi fisik, biologi maupun sosial ekonomi. Akibat meningkatnya kebutuhan hidup sebagian manusia telah mengintervensi ekosistem tersebut. Hal ini dapat terlihat dari adanya alih fungsi lahan mangrove menjadi tambak, permukiman, areal industri dan sebagainya.Salah satu kawasan hutan mangrove di Bali adalah Teluk Benoa. Tujujan penelitian ini yaitu untuk mengetahui struktur dan vegetasi dan jenis-jenis mangrove yang dominan di hutan mangrove Teluk Benoa-Bali. Metode yang digunakan dalam penelitian ini adalah sample survey method atau survey di lapangan. Pada setiap stasiun pengamatan sepanjang transek garis, dibuat petak (plot) dengan ukuran 10 meter x 10 meter sebanyak 3 plot untuk tiap stasiun. Selanjutnya pada setiap plot dilakukan pengamatan dan penghitungan jumlah individu mangrove per spesies yang ditemukan. Untuk keperluan analisis data, masing-masing individu pohon, anakan dan semai dicatat nama jenis dan keliling batang setinggi dada, sedangkan untuk vegetasi strata seedling dicatat nama jenis dan jumlah individu masing-masing jenis. Vegetasi mangrove yang ditemukan yaitu 11 spesies mangrove sejati dan 1 jenis mangrove ikutan yaitu Waru Laut (Thespesia popunema). Pada stasiun I, vegetasi mangrove tingkat pohon didominasi oleh Sonneratia alba (INP) sebesar 130.61, tingkat anakan didominasi oleh Rhizophora mucronata (INP) sebesar 246.11. Pada stasiun II, vegetasi mangrove tingkat pohon didominasi oleh Rhizophora mucronata (INP) sebesar 109.59, sedangkan tingkat anakan didominasi oleh Rhizophora stylosa (INP) sebesar 91.60. Pada stasiun III, vegetasi mangrove tingkat pohon didominasi oleh Rhizophora apiculata (INP) sebesar 92.26, sedangkan tingkat anakan didominasi oleh Rhizophora apiculata (INP) sebesar 82.89. Pada stasiun IV, vegetasi mangrove tingkat pohon didominasi oleh Sonneratia alba (INP) sebesar 93.77, sedangkan tingkat anakan didominasi oleh Avicennia marina (INP) sebesar 103.04. Pada stasiun V, vegetasi mangrove tingkat pohon didominasi oleh Bruguira gymnorrhyiza (INP) sebesar 115.31, sedangkan tingkat anakan didominasi oleh Rhizophora stylosa (INP) sebesar 136.62.

Pengaruh Kepadatan Bagan Dan Kedalaman Perairan Terhadap Produktivitas Hasil Tangkap Bagan Tancap Di Teluk Pang Pang, Banyuwangi, Jawa Timur Rani Ekawaty
Journal of Marine and Aquatic Sciences Vol 1 No 1 (2015)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

During 1998-2003 fisheries production tends to decrease for Muncar, Banyuwangi, East Java. Growing number of fishing gears (especially the set fishing gear like the bambbo platform lift net) in the Pang Pang bay even though its presence is not allowed, this is might be the caused of the decreased fisheries production. As for the bamboo platform lift net itself has many factors that affect the catch effort productivity. Some of them were examined in this study which are the density (unit/ha), water depth (m) and time of hauling (min). From this study, we expected to know how far the influence of each factors as well as the mathematical models of it. This study results shows that the density of the bamboo platform lift net greatly affect the fishing gear productivity, that the higher the density number will lead to further decline in the fishing gear productivity. The water depth also has an effect, in which the deeper the waters of the fishing gear, the more catch result get. The other factors such as the time dummy and hauling time influence less on the catch. The optimum density number is < 5unit/ha, as the optimum water depth is ? 26,2 m.

Estimasi Persentase Karbon Organik Di Hutan Mangrove Bekas Tambak, Perancak, Jembrana, Bali I Gusti Agung Indah Mahasani; Nuryani Widagti; I Wayan Gede Astawa Karang
Journal of Marine and Aquatic Sciences Vol 1 No 1 (2015)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Mangrove forests in the coastal regions are very effective and efficient in reducing the concentration carbon dioxide (CO2) in the atmosphere, because mangroves can absorb CO2 through photosynthesis by diffusion through the stomata and then store carbon in the form of biomass. The purpose of this study, namely: (1) Determine the percentage of organic carbon in the soil in former mangrove forest ponds in Perancak and (2) Determine the vertical variation of the percentage of organic carbon stored in soils in former mangrove forest ponds in Perancak. The method used from this study is the loss on ignition (LOI). The average percentage of organic carbon in mangrove forest area of the former farm of 50.181 % C or 184.618 Mg/ha. The average vertical variations of each depth, that is: depth (0-15 cm) 50.487 % C, (15- 30 cm) 50.781 % C, (30-50 cm) 50.550 % C, (50- 100 cm) 51.689 % C, and (> 100 cm) 47.396 % C.

Variasi Geografik Kelimpahan Zooplankton di Perairan Terganggu, Kepulauan Seribu, Indonesia Elok Faiqoh; Inna Puspa Ayu; Beginer Subhan; Yuliana Fitri Syamsuni; Aji Wahyu Anggoro; Andrianus Sembiring
Journal of Marine and Aquatic Sciences Vol 1 No 1 (2015)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Zooplankton play a significant role in ecosystem as secondary producer. Climate change will potentially affect the abundance and global composition of zooplankton. This research aimed to study the geographical variation of zooplankton abundance relative to anthropogenic pressure. The research was conducted in April 2014 in area with presumably distinct anthropogenic level by its relative distance to the mainland of Jakarta. Samples were collected at Pramuka Island, Karang Beras Island, Kotok Island, and Sepa Island where subsequently lying to the nearest until furthest distance from mainland. Zooplankton samples were collected by towing the plankton net for 10 minutes for each site for three replicates. Abundance was obtained from Pramuka Island was 266698,214 ind/L, Karang Beras Island was 597363,1 ind/L, Kotok Island was 526447,8 ind/L and Sepa Island was 438225,3 ind/L. Overall, the closer to mainland, the richer nutrient and the more abundant zooplankton was conceived in the waters. Surprisingly, in Pramuka Island, the nearest island to mainland among other sites, had the lowest abundance of zooplankton although nutrient level was the richest among others.

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