Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Journal of Marine and Aquatic Sciences

jmas
Website

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 18 Documents

1 2

Search results for , issue "Vol 5 No 1 (2019)" : 18 Documents clear

Kondisi Substrat Dasar Perairan Cagar Alam Pulau Sempu, Kabupaten Malang Oktiyas Muzaky Luthfi; Firly Yulianto; Sanydo Pandapotan Caesar Pangaribuan; Dimas Bagus Dwi Putranto; Dimas Syarif Alim; Respati Dwi Sasmitha
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The aim this study was to determine the condition of bottom substrate base of Sempu Island Nature Reserve of Malang that was very important to know the coral reef composition to support living creatures in this area. The research was conducted on December 8-9, 2017, the substrates data was taken by using Point Intercept Transect (PIT) for 100 m along of coast of Sempu Island (Reef Check Indonesia), the transect was divided into four parts 20 meters each segment and 5 m blank between segments. The data was taken into three stations, they were Teluk Semut 1 , Teluk Semut 2, and Watu Meja. The results of this study indicate that the basic substrate of waters at Sempu Island Nature Reserve is divided into two: living (HC = Hard Coral, SC = Soft Coral, NIA = Nutrien Indicator Algae, SP = Sponge and OT = Other) and non-living (RKC = Ricently Killed Coral, RC = Rock, RB = Rubble, SD = Sand and SI = Silt). Teluk Semut Station 1 was dominated by the rubble (39%), Teluk Semut 2 station and Watu Meja were dominated by hard coral (53%). In conclusion, from three monitored stations showed that the life coral percentage in Sempu Island water was significane changed during last one year where in Teluk Semut 1 the coral coverage decreased to 21.75%, while in Teluk Semut 2 and Watu Meja was increased up to 42.38% and 25.5% respectively. The natural and non-natural factors may have influenced the changed of substrate cover in Sempu Island water during this last year.

Kualitas Air dan Struktur Komunitas Plankton di Perairan Pantai Lovina Kabupaten Buleleng Provinsi Bali Irene Yolanda Br Ginting; I Wayan Restu; Dewa Ayu Angga Pebriani
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Lovina Beach is one of the beaches visited by many foreign and domestic tourists. Lovina Beach has a tourism spot and a vast area of marine biota cultivation. Life of biota in the waters of Lovina Beach is affected by conditions of beach waters. The research purpose was to know the correlation between waters quality and plankton in Lovina Beach by using observation method. The research was done on February until March 2017. Species of fitoplankton species from all three stations was dominated by Lyngbya sp. with abundance of 78 ind/l. The average value of the phytoplankton diversity index found was 1.7706. The average value of phytoplankton uniformity index is 0.9882 while the value of phytoplankton dominance index is 0.1737. The average value of the zooplankton diversity index found is 1.7311. The average value of the zooplankton uniformity index is 0.8896 while the zooplankton dominance index value is 0.2125. The result of the measurement of water quality is temperature parameter in Lovina Beach ranged from 27.6 - 28.9 0C, brightness ranged between 4.7 - 6 m, salinity of 25.3 - 27 ppt, DO (Dissolved Oxygen) ranged between 4 - 4 , 7 Mg / L, the pH ranged from 8.5 to 8.6, the nitrate ranged from 0.0081-00087 Mg/L and the phosphate ranged from 0.016 to 0.027 Mg / L. So, it can be concluded that the waters of Lovina Beach has the highest abundance of plankton that is the type of zooplankton, the level of plankton community structure in Lovina Beach waters is moderate.ppt, DO (Dissolved Oxygen) 4 – 4,3 Mg/l, pH 8,5 – 8,6, nitrate 0,0081 – 0,0087 Mg/l and phosphate 0,016 – 0,027 Mg/L. The structure of plankton community in Lovina coastal according of phytoplankton abundance categorized in oligotropic, while according of zooplankton abundance categorized in moderate (mesotropic).

Struktur Komunitas Makrozoobenthos Sebagai Indikator Kualitas Perairan di Pantai Serangan Provinsi Bali Yulihatul Meisaroh; I Wayan Restu; Dewa Ayu Angga Pebriani
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Serangan Island is a small island located approximately 5 km in south of Denpasar City and has a maximum length of 2.9 km and a width of 1 km which is administratively as part of the Denpasar City, Bali Province. Serangan Island is widely used for aquaculture and fisheries activities, moreover Serangan is also used as tourism activities, transportation routes, the harbour of ships and residences which may have impact on the aquatic ecosystem balance. The purpose of this research is to know how the structure of macrozoobenthos community and the water quality condition in Serangan Island. The research was conducted on February to March 2017 by using descriptive quantitative method in 3 research stasions. The result showed that there are 23 species of macrozoobenthos that consists of 7 classes, namely Gastropods, Bivalve, Crustacea, Echinoidea, Asteroidea, Ophiuroidea, and Holothuroidea. The highest total of abundance was at station 1 about 46,8 ind/m2. The diversity index ranged from 0,66-2,14 and the equibility index ranged from 0,60-0,81, while the dominance index ranged from 0,17-0,63. Based on the criteria of the Shanon-Wiener diversity index (H'), the diversity index at station 1 and 2 indicates moderate diversity which has moderate species distribution and moderately polluted waters, whereas the value of the diversity index at station 3 indicates that the diversity in this stasion is low, showed by low abundance of species, low stability of the community and severe polluted condition.

Biomonitoring Kesehatan Kerang Abalone (Haliotis squamata) Hasil Tangkap di Perairan Mengening, Bali Dengan Pengamatan pada Aktifitas Fagositosisnya Devi Ulinuha; Ima Yudha Perwira
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The health level of captive abalone (Haliotis squamata) in Mengening waters, Bali Island, was observed through observation on the phagocytosis activities. This study was aimed to determine the health level of abalone in the Mengening waters influenced by their environmental factors. The method is in this study was descriptive, through observation on any parameters of the immunity including: Total hemocyte count (THC) and Percentage of Fagocytosis. Water quality in the location was also measured, including Dissolved Oxygen (DO), pH, water temperature, and water salinity. THC of Abalone in Mengening waters was 2.03 x 106 celss/ml, while the percentage of phagocytosis was 75,9%. Water quality during the study showed optimal condition (DO: 5.9-6.1 ppm; pH: 7.8; water temperature: 25.1-31.5oC; and water salinity: 33-34 ppt), even there was fluctuation on the water temperature (>5 oC) between morning and afternoon.

Simpanan Karbon Pada Padang Lamun di Kawasan Pantai Mengiat, Nusa Dua Bali I Kadek Vidyananda S Rahadiarta; I Dewa Nyoman Nurweda Putra; Yulianto Suteja
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Human activity is the most contributor of carbon dioxide gas (CO2) to the air. The oceans have an important role in the carbon cycle, about 93% of the Earth's CO2 is stored in the oceans. Seagrass is one of sea plants that has a role as carbon sinks in ocean. Seagrass beds are able to absorb carbon by an average 0.21 tons/ha and the important species are Enhalus acoroide. The aim of this study is determine the carbon storage in seagrass at aboveground (leaf), belowground (roots and rhizomes) and carbon storage on each species of seagrass obtained at Mengiat coastal area. Determination of sampling point refer to seagrass density that used by purposive sampling. This method was assumed to represent or describe the condition of this area. This research used dry dyeing method which components sample was destruction with 500oC inside the furnace. The results showed that carbon storage of seagrass at belowground (root and rhizoma) is 25.70 gC/m2, and aboveground (leaf) is 17.18 gC/m2. Carbon storage at belowground is higher than aboveground because carbon will accumulate in the sediment. The type of seagrass that is obtained at Mengiat coastal area is Thalassodendron ciliatum, Thalassia hemprichii, Cymodocea serrulata, Halodule uninervis, Cymodocea rotundata, and Syringodium isoetifolium, the highest carbon storage are 62.46 gC/m2 is owned by Thalassodendron ciliatum, and the lowest carbon storages are 17.25 gC/m2 is owned by Syringodium isoetifolium.

Studi Hindcasting Dalam Menentukan Karakteristik Gelombang dan Klasifikasi Zona Surf Di Pantai Uluwatu, Bali Karina Santoso; I Dewa Nyoman Nurweda Putra; I Gusti Bagus Sila Dharma
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Bali is one of the islands where there are many surf zones with various characteristics. In addition, Bali is also a heaven with a classy wave for the surfers of the world. One of the most challenging places to surf in Bali is Uluwatu Beach. Uluwatu Beach is ranked the 3rd best surf spot in the world version of CNN Travel in 2012. Wind causes sea waves, therefore wind data can be used to estimate the height and direction of the waves. Wave Hindcasting with Sverdrup, Munk and Bretschneider (SMB) method is calculated based on wind data for 10 years (2001 - 2010) from BMKG Ngurah Rai Station - Denpasar to obtain a significant wave height and period. In this research, it is necessary to approach through Hindcasting procedure, wave transformation analysis and surfing Terminology in determining the type of breaking wave and classification of surf zone in Uluwatu Beach area. Wave calculation result in Uluwatu Beach dominated by wave that coming from west side with significant wave height (Hs) of 0.98 m and significant wave period (Ts) of 5.21 s. The wave height due to the influence of wave refraction and shoaling is 0.976 m. The breaking wave height obtained from the calculation is 1.04 m at a depth of 0.849 m. From the result in this research, it can be concluded that the breaking wave type that occurred at Uluwatu Beach is plunging type according to the calculation result from its Irribaren number (0.4 <Ni <2.3). The classification of the surf zone at Uluwatu Beach based on its breakup type of wave is thought to be a good zone for surfers on intermediate level.

Kandungan Nitrat, Fosfat Dan Pertumbuhan Biomassa Basah Kiambang (Salvinia molesta) Di Perairan Danau Buyan, Buleleng, Bali Ni Wayan Indah Purnamawati; I Wayan Arthana; Suprabadevi Ayumayasari Saraswati
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The objective of this research was to determined the relationship between nitrate and phosphate content on the growth of wet biomass Salvinia molesta in Buyan Lake, and also to know the difference of growth of Salvinia molesta in each station with different treatment. The research was conducted from February to March 2017 at Buyan Lake. Biomass measurements and water sampling were carried out at 4 stations with a plot of each treatment. The measurement of wet-biomass were carried out in situ by measuring at each treatment and for measuring the nitrate and phosphate content performed in the laboratory. The result showed that nitrate correlated with biomass growth of Salvinia molesta at the lowest treatment with R2 value of 0,105 and the highest at quarter treatment with value R2 of 0,889. The phosphate relationship with the lowest wet biomass growth was at full treatment with the R2 value of 0.042 and the highest in the quarter treatment with the R2 value of 0.936. The highest growth was found in station 1 and the lowest growth at station 4. For each treatment, the highest growth treatment was in a quarter treatment.

Inventarisasi dan Komposisi Jenis Ektoparasit Ikan Nila (Oreochromis niloticus) Sebagai Biomonitoring Perairan Sungai Tukad Badung, Bali Alfi Hermawati Waskita Sari; Rani Ekawaty
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Environmental stressors which coming from anthropogenic wastes that indirectly enters into the river waters also affect the biota's health in the ecosystem such as the Tilapia Fish (Oreochromis niloticus) which is found in the waters of the Tukad Badung River, Bali. The presence of parasites in fish is also associated with changes of the water quality. The objectives of this study is to provide data and information on the inventory and composition of the parasite species in Tilapia fish (Oreochromis niloticus) as the aquatic health biomonitoring of in the effort of sustainable river ecosystem management. The results of ectoparasit observation of the Tilapia which obtained from five stations in Tukad Badung waters found 6 types of ectoparasites, which are Trichodina sp. Dactylogyrus sp. Gyrodactylus sp., Chilodonella sp., Vorticella sp. and Lernea sp. The composition of the ectoparasite species of nila tilapia fish (Oreochromis niloticus) obtained from all five research stations in Tukad Badung waters by percentage of presence of ectoparasite Trichodina sp. are 70%, Dactylogyrus sp. 31%, Gyrodactylus sp. 4% and Chilodonella sp., Vorticella sp. and Lernea sp. 1%.

Kelimpahan dan Keanekaragaman Tunikata (Ascidiacea) di Perairan Jemeluk dan Penuktukan, Bali Ni Made Pitria Menala Saputri; I Dewa Nyoman Nurweda Putra; Widiastuti Widiastuti
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Tunikata is an animal shaped like a tube and its body is covered by a mantle (tunic). These organisms have functions and impacts for ecology, pharmacology, people and the economy. However, the various important roles of the tunicate are not matched by information on abundance and diversity in Indonesia in general and the island of Bali in particular. Therefore, this study aims to determine the abundance, species composition and the diversity of tunikata in the waters of Jemeluk and Penuktukan, Bali, where each of these waters has a different coral reef morphology reef flats (Jemeluk) and reef slopes (Penuktukan). Data retrieval is done with a 25x2m2 belt transect and parallel to the shoreline. Determination of location of observation based on purposive sampling method. Analysis of the data used using the abundance formula, species composition and the Shannon-Wiener diversity index. The results showed that the abundance of tunikata in Jemeluk waters did not differ significantly between stations where the highest was found in stations 1 and 3, the lowest at station 2. But the abundance of tunicates in waters Penuktukan significantly different between stations where the highest in three and the lowest station on Station 1. There are nine kinds of tunicates on both waters where species Didemnum molle and Atriolum robustum is the type most commonly found. The highest diversity of tunicate species in Jemeluk waters is found in stations 1 and 3 and the lowest is at station 2, while the highest Penuktukan is located at station 1 and the lowest is at station 3. In general, the index of biodiversity in both waters is categorized as low.

Kondisi dan Keanekaragaman Jenis Lamun di Perairan Pulau Serangan, Provinsi Bali Luh Gede Manik Radzena Martha; Pande Gde Sasmita Julyantoro; Alfi Hermawati Waskita Sari
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Serangan Island is one of the tourism destinations in Bali which is administratively belong to the municipality of Denpasar. Tourism development near with the segrass habitat cause the segrass ecosystem being degraded in the waters of Serangan Island. This study was aimed to determine the diversity and conditions of seagrass species which were observed from the density and percentage of seagrass coverage and to examine the effect of water quality on the percentage of seagrass coverage. This research was conducted from February to March 2017 on Serangan Island using quantitative descriptive method. Sampling was conducted at three stations by taking data and samples of seagrass, measuring water quality (temperature, salinity, pH, turbidity, substrate observation) and analyze of nitrates and phosphates content. Seven types of seagrass species were found i.e. Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Halophila ovalis, Halodule pinifolia, Syringodium isoetifolium, and Thalassodendron ciliatum. The study showed that the diversity index value was in the medium category. The density of seagrass was classified as very tight (condition scale of 5). The highest density was found on Cymodocea rotundata spesies at station I about 777 ind/m2. The highest percentage of seagrass coverage (79,55%) was found in station I which classified as good condition, while station II and station III were classified as damaged condition with value 13.65% and 20,79% respectively. Finally, the water quality parameters have relatively low effect to seagrass coverage percentage.

Page 1 of 2 | Total Record : 18

1 2

Filter by Year

2019 2019

Filter By Issues

All Issue Vol 9 No 2 (2023) Vol 9 No 1 (2023) Vol 8 No 2 (2022) Vol 8 No 1 (2022) Vol 7 No 2 (2021) Vol 7 No 1 (2021) Vol 6 No 2 (2020) Vol 6 No 1 (2020) Vol 5 No 2 (2019) Vol 5 No 1 (2019) Vol 4 No 2 (2018) Vol 4 No 1 (2018) Vol 3 No 2 (2017) Vol 3 No 1 (2017) Vol 2 No 2 (2016) Vol 2 No 1 (2016) Vol 1 No 1 (2015) More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota denpasar,

Bali

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official -

Editorial Address -

Location Kota denpasar, Bali INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota denpasar,

Bali

INDONESIA