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Kandungan Nitrat, Fosfat, dan Silikat di Perairan Pantai Pandawa, Bali Mila Jeniarti; Ima Yudha Perwira; I Ketut Wija Negara
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study aimed to measure the concentration of nitrate, phosphate, and silicate in the water of Pandawa Beach waters. This study was conducted at the Kutuh Village (Badung, Bali, Indonesia), from December 2019 to January 2020. The water sample was collected from the location every week for one month. The water sample was taken from the surface, middle, and bottom of the water. Measurement of nitrate and silicate was performed using Salifert KIT Nitrate and Silicate, while measurement of phosphate was performed using Hanna 713 KIT analysis. The result showed that concentration of nitrate in the Pandawa Beach Waters was ranging from 0,91 to 2,00 mg/L. Concentration of phosphate was ranging from 0,32 to 1,93 mg/L, while silicate was ranging from 0,07 to 0,52 mg/L.

Laju Pertumbuhan Ikan Nila (Oreochromis niloticus) pada Tiga Sistem Resirkulasi yang Berbeda Yessica Christin; I Wayan Restu; Gde Raka Angga Kartika
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Recirculation aquaculture system can be used to maintain the water quality during fish maintenance. This research aimed to determine the growth rate and survival rate of Tilapia (Oreochromis niloticus) by used three different recirculation system. The treatments are recirculation without filter (control), a biofilter system (bioball) and aquaponic systems (using water spinach and caisim). During eight weeks, the resulted of research showed the highest growth rate of Tilapia (Oreochromis niloticus) in biofilter treatment amounted for 4.58%/day followed by the control treatment for 4.09%/day and the lowest in aquaponic treatment for 3,81%/day. The best survival rate of Tilapia (Oreochromis niloticus) during the research contained in aquaponic treatment followed by biofilter treatment and the lowest value was in control treatment. During the research, of aquaponic treatment gave survival rate for 78.7%, biofilters 74.8% and control treatment for 63.5%. There were no significant differences (P > 0,05), between parameters for growth while survivl rate was significant (P < 0.05). The parameters of water quality include temperature, potential hidrogen (pH), dissolved oxygen (DO) and total dissolved solids (TDS). The quality range of water in all treatments generally described that the range were still running in tolerance for growth and survival rate of Tilapia.

Indeks Kesesuaian Wisata Bahari Kategori Rekreasi Pantai di Pantai Balangan, Kabupaten Badung, Bali Sherina Oktafianti; I Wayan Darya Kartika; I Wayan Restu
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This research was conducted to determine the suitability of marine tourism conditions for the beach recreation category to preserve sustainable marine tourism. The IKW data collection used the purposive sampling method. This research was divided into 3 observation stations with a sampling distance of 10 m from the shoreline to the sea. Determination of the marine tourism suitability index of beach recreation used the suitability matrix analysis by considering 10 parameters such as water depth, water brightness, beach type, beach width, beach slope, current velocity, water bottom material, coastal land cover, hazardous biota, freshwater availability. Water brightness, current velocity, beach widh, water depth and hazardous biota parameters data collection is carried out with 3 repetitions, whereas the other parameters are carried out without repetition. The parameter conditions for the IKW for beach recreation at Balangan beach had a white sand type of beach, beach width 28 m, the water bottom material is sand, water depth 0,66 m, water brightness 73%, current velocity 29 cm/s, beach slope 7,9°, coastal land cover is an open field, without hazardous biota, and freshwater availability 0,075 km. The results were obtained from the calculation of the IKW for beach recreation tourism at station I with a value of 2,92, station II 2,80, and station III 2,92. The result showed that all 3 stations were categorized as a very suitable category which indicates that Balangan Beach is very suitable as a beach recreation tourism object and can be further developed in its management.

Intensitas dan Prevalensi Endoparasit pada Ikan Layang (Decapterus russeli) yang didaratkan di Pantai Kedonganan Bali Amayliana Ajeng Nastiti; Pande Gde Sasmita Julyantoro; Dewa Ayu Angga Pebriani; Endang Wulandari Suryaningtyas
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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The Indian scad (Decapterus russeli) is a pelagic fish that has high economic value, found throughout the Indonesian waters. The availability of Indian scad resources makes this fish easy to find, especially in Kedonganan Beach, Bali. The use of Indian scad for human consumption makes it necessary to pay attention to the quality of indian scad in order to avoid fish diseases, such as parasites. The attack of endoparasites in Indian scad can be zoonotic, which can be dangerous for humans who consume them, so research is needed to determine the density of endoparasite attacks and the percentage of endoparasites in indian scad. Samples of Indian scad (D. russeli) were obtained randomly from PPI Kedonganan and Kedonganan Fish Market. The observed organs were intestines, gonads and liver. The research was conducted for 1 month from 16 December 2020 to 17 January 2021 and fish samples were taken by random sampling. There were 35 fish samples (D. russeli) examined. The endoparasites found were Anisakis sp. (316 individuals), Camallanus sp. (15 individuals), and Lecithocirium sp. (33 individuals). The highest intensity in the genus Anisakis was 9.2 ind/fish and was classified as moderate infection and the highest prevalence was also in the Anisakis genus, which was 97.14% with (almost always categories), 60% of the genus Lecithocirium (very frequent categories), and the Camallanus genus of 28.50% with (frequent category).

Kandungan Padatan Teruspensi dan Padatan Terlarut pada Air di Bagian Hilir Sungai Ayung, Bali Tomtommy Haykal; Ima Yudha Perwira; I Wayan Darya Kartika
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study aimed to know the amount of suspended solids and dissolved solids in the Ayung River. This study was carried out at the Downstream of Ayung River, from December 2019 to January 2020.Water sample collected from the location was analyzed for total suspended solids (TSS), total dissolved solids (TDS), temperature, pH, and DO. The result of the study showed that the amount of suspended and dissolved solid in the evening was relatively higher than that in the morning. Temporal analysis showed that there was no big difference in both parameters. In general, the water quality level in the downstream of Ayung River was belong to Class III according to the Government Regulation Number 82, released in 2001 about The Management of water quality and water pollution control.

Analisis Kesesuaian Lokasi Produksi Garam Berdasarkan Indeks Kesesuaian Garam (IKG) di Desa Nggolonio, Kabupaten Nagekeo, Nusa Tenggara Timur Theresia Alvianita Muga; Ima Yudha Perwira; I Wayan Darya Kartika
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Nggolonio Village is one of the salt production areas in Aesesa District, Nagekeo Regency, East Nusa Tenggara. One effort that can be done to support efforts to increase salt production in Nggolonio Village is to analyze the suitability of salt production locations in the five research locations. The purpose of this study was to determine the Salt Suitability Index in the salt production center in Nggolonio Village. Data was collected in November 2019 from five different locations (three empty sites, one salt farmer area, and one salt company site). To obtain the Salt Suitability Index value, the secondary data was used on this study, such as: rainfall, irradiation time, air humidity, wind speed, air temperature, evaporation rate, and primary data on soil permeability, soil texture, and raw water saturation. The results showed that value of rainfall was 0.2 mm, irradiation time was 9.6 hours/day, air humidity was 31%, wind speed was 7.5 m/s, air temperature was 31 oC, evaporation was 7.8 mm/day, and the soil texture was loam. The soil permeability location I: 1.3×10-3 k, location II: 1.2×10-3 k, location III: 1.3×10-3 k, location IV: 2.0×10-3 k, location V: 1.8×10-3 k, raw water saturation location I: 3.8 oBe, location II: 2.8 oBe, location III: 2.8 oBe, location IV: 3.0oBe, and location V: 2.5 oBe. Based on the results, Salt Suitability Index at five locations in Nggolonio Village has similar index value, namely 88.89 %. These five locations fall into Very Suitable (S1) category as salt production locations.

Laju Pertumbuhan Karang Transplantasi Acropora sp. di Pantai Pandawa, Bali Mayang Utami; I Wayan Arthana; Ni Made Ernawati
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Coral transplantation is a coral rehabilitation activity by cutting coral from a colony to be replanted. This study aimed to determine the differences in the growth of coral transplants of Acropora sp. using cement media and pipe media. Research on coral transplantation was carried out at the end of December 2020 to early March 2021 for 3 months at Pandawa Beach, Bali. Observations of coral growth using different media were carried out 6 times with an interval of 14 days using a caliper. Observations on the growth of coral fragments consisted of increasing the height and width of the coral. The results showed that the coral height of Acropora sp. using pipe media has the highest growth rate of 39.34 mm, coral height growth using cement media is 30.31 mm. The result of the highest growth width on coral using pipe media is 30.90 mm and the growth of coral width on cement media is 28.76 mm. The survival rate of coral Acropora sp. on cement media by 100% and on pipe media by 90%.

Strategi Pengelolaan Ekowisata Mangrove Berbasis Konservasi pada Objek Wisata Alam Trekking di Tahura Ngurah Rai, Bali Atsna Qi Doma T. Manihuruk; I Wayan Restu; I Wayan Darya Kartika
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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The aim of this research was to explain the legal aspects of trekking nature tourism object, to determined the zones of this place existence and to explain the strategies management of mangrove ecotourism in trekking nature tourism object. The methods of this research were using survey, purposive sampling and accidental sampling. The data were analized using a content analysis and SWOT analysis. The results indicates that the development of that place has already been legal as the tourist attraction. This statement is according to the decree of the Minister of Forest Number 544/Kpts-II/1993 on September 25, 1993. The development of this place is also on the right zone, the place is located in the utilization zone. And, this research resulted 6 strategies namely; improved the infrastructure and providing dustbins, toilet revitalitation and reconstruction the bridges, conduct waste management with an integrated system which is based on community management that involved people around the place, increasing the diversification of tourist attraction objects, increasing the promotion by joining the tourism developers. The last but not least, is about issuance of PERDA (Peraturan Daerah) to control and made an ideal price for tickets, and improved the human resource management.

Profil Nutrien Nitrat dan Fosfat pada Air di Sungai Jangga, Karangasem, Bali Syahriyani Purba; Ima Yudha Perwira; Dewa Ayu Angga Pebriani
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Jangga river is one of the rivers in the Bali and has important ecological function. On the other hand, the jangga also became a waste-disposal of anthropogenic activities surround the river. That could an affect to increase content of nitrate and phosphate was found in Jangga river. This study was aimed to identify the concentration of nitrate and phosphate in the water of Jangga river. This study was conducted in a descriptive method by taking samples five stations from January to February 2020. The main parameters measured are Nitrate, phosphate and other water quality parameters (turbidity, temperature, pH, TDS, TSS, DO, COD and chromium). The result of this study showed that nitrate levels were high. The value of nitrate ranged from 5.3 mg/L to 7.6 mg/L. Parameter of phosphate was found in the Jangga river is also high. The value of phosphate ranged from 0.7 mg/L to 1.3 mg/L These are affected by the sewage from anthropogenic activities was found around the Jangga river including detergent and waste from agricultural and fisheries activity around the Jangga river.

Profil Kandungan Fosfat pada Air di Daerah Aliran Sungai (DAS) Tukad Ayung, Bali Novita Wulandari; Ima Yudha Perwira; Ni Made Ernawati
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Ayung River is the longest river in the Bali Island. There are a lot of antropogenic activities around this area. However, there is lack information about the nutrient (Phosphate) level in the water of this river. This study was aimed to observe the amount of nutrient (Phosphate) in the water of Ayung River. Water sampling was carried out in the upstream, middle stream, and downstream of Ayung River from December 2019 to January 2020. The phosphate amount was measured using Hanna HI713 reagent, Dissolved Oxygen (DO) of water was measured using Winkler method, pH of water was measured using digital pH meter, and water temperature was measured using Thermometer. The result showed that phosphate of the water was ranging from 0.3 to 0.9 mg/L. The amount of phosphate tends to be higher in the evening (0.9 mg/L) compared to that in the morning time (0.4 mg/L). The phosphate increase rate of middle stream to the downstream was higher (0.011 mg/L.km) compared to that of upstream to the middle stream (0.009 mg/L.km).

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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