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All Journal Journal of Marine and Aquatic Sciences ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Kajian Bali Journal of Marine Research and Technology

Ni Luh Putu Ria Puspitha

Program Studi Ilmu Kelautan, Fakultas Kelautan Dan Perikanan, Universitas Udayana, Bali, Indonesia

Author-ID : 3755586

Religion Arts Humanities Earth & Planetary Sciences Languange, Linguistic, Communication & Media Social Sciences

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Pendugaan CPUE dan Potensi Maksimum Lestari Ikan Layang Deles (Decapterus macrosoma) yang Didaratkan di PPN Pengambengan, Jembrana - Bali Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 7 No 1 (2021)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2021.v07.i01.p06

Layang deles is one of the highest catches landed in PPN Pengambengan. PPN Pengambengan is a strategic fishery port owned by Jembrana with a function as a center or center for marine fisheries landing. Improvement of fishing technology will be related to the problem of abundance or availability of fishery resoure stocks, so it is necessary to study CPUE, MSY and JTB so that they can utilize the resources with optimal but still maintain its preservation in nature. This research has a purpose, which is to know the trend of CPUE, MSY and JTB of layang deles fish (Decapterus macrosoma) landed in PPN Pengambengan. The method used is a quantitative descriptive method using a surplus production analysis from Schaefer. The data used in this study are catch and fleet data from 2014 – 2019 obtained directly from the PPN Pengambengan office. The results showed the highest CPUE in 2015 amounted to 6,12 tons/fleet, but after that the CPUE trend tended to decline, especially since 2016 while the MSY value was obtained at 3.348,9 tons/year with a maximum sustained effort of 1.830 fleets/year. Furthermore, the JTB value is 80% of the MSY value, a figure of 2.679,12 tons/year is obtained. This indicates overfishing and over-exploitation in the PPN Pengambengan area. To prevent overfishing and over-exploitation, prevention can be done, such as limiting fishing capacity and effort can also apply fisheries management models, such as co-management and EBFM (eco-based fisheries management).

Laju Pertumbuhan Rumput Laut Gracilaria sp Melalui Budidaya IMTA (Integrated Multi Trophic Aquaculture) di Pantai Geger, Nusa Dua, Kabupaten Badung, Bali Kadek Yudiastuti; I Gusti Bagus Sila Dharma; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 4 No 2 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Gracilaria sp is red alga which belong to class rhodophyceae. It can grow in shallow salt water with a general characteristic is having a cylindrical and branched thallus form. Seaweed cultivation can be performed through IMTA (Integrated Multi Trophic Aquaculture) method. The basic principle of cultivation through the IMTA method is utilizing service of the low thropic level species in marine ecosystems, such as shells and seaweed. This method is believed to be able to overcome the environmental problems caused by cultivation activities, such as feces and uneaten feed. This research was perfomed 45 days, from February 25 to April 11, 2017. It was held at Geger Beach, Nusa Dua, Badung Regency, Bali, using a complete randomized design method that consist of three treatments and three repetition for each treatment. Treatment control (T1) consisted of 10 bunches of seaweed 100 grams without the abalone, treatement 2 (T2) consisted of 10 bunches of seaweed 100 grams and 20 abalones and treatement 3 (T3) consisted of 10 bunches of seaweed 100 grams and 40 abalones. The result showed that specific growth rate in Gracilaria sp. was highest in treatment T1, compared to treatment T2 and T3. This was caused by the cage construction of abalone amd the present of small mesh size net to cover the seaweed planting, which made the growth was not optimal. However, the use of a nets system in seaweed cultivation could minimize the loss of thallus. It was proved by the survival rate of seaweed in first, second and third, that is averagely high, ranging from 90% to 100%. Physical and chemical water quality parameters are also measured, and It showed that the water quality was suitable for the cultivation of both, seaweed and abalone.

Persepsi Nelayan Terhadap Status Konservasi Hiu dan Pengaruhnya Terhadap Penangkapan Hiu: Studi Kasus di Kabupaten Badung, Provinsi Bali Eriq Imanuel; I Gede Hendrawan; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 4 No 2 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Shark is one of top predator that can define and control marine food chain. Shark breeding process is relatively slow and increase of catching activity has even given worse impact to shark population. Several endangered shark species has already protected the catch activity was banned. Some of them, such as Alopias superciliosus are found in Benoa and Kedonganan harbour. This condition happened because of not enough information and knowledge transfer to the local community about the protected species and catching regulation. Based on that information,the research about fishermen perception on shark conservation status and its correlation with the shark catch is important to be conducted. Data was collected using quisioner through interview approach. All the respondent is men with the age ranged from 16-67 years old, and 98% of respondent is labor. About 55% of the respondent graduated from elementary school. The result showed that the fisherman perception of shark conservation status categorized as good, while shark catch that is related with conservation in Badung district is categorized very good. The correlation of fisherman perception to shark conservation status with shark catching effort is negative, and significant to the shark catching effort (?=0,05) in Badung district. It means that if the fisherman perception to the shark conservation status in Badung district increased, so that the catch effort will be decrease.

Perbandingan Produktivitas Pancing Ulur (HandLine) Dan Jaring Insang (Gill net) Nelayan Desa Kusamba, Klungkung, Bali Terhadap Hasil Tangkapan Ikan Tongkol (Auxis sp.) Pande Chrisna Aryasuta; I Gusti Ngurah Putra Dirgayusa; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 6 No 2 (2020)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2020.v06.i02.p12

This study uses two environmentally friendly fishing gears namely gill net and hand line. The length of one set of hand line is 100 m and the length of one set of gill nets is 250 m. The purpose of this study was to determine the number of catches, species composition of catches and the efficiency of fishing gear that provided benefits for the fishermen of Kusamba Village. This data collection was carried out in field plunge directly with fishermen using the one day trip method for 35 trips during the tuna fishing season by Kusamba Village fishermen. Auxis sp is one type of fish that is the main target of the catch of fishermen in Kusamba Village. Auxis sp often follows the current circulation, the catch of Auxis sp on the fishermen of Kusamba Village has a different amount of production every day. In terms of Auxis sp catches by Kusamba Village Fishermen who use two fishing gear are dominated by gill nets and the quality aspect is dominated by hand linecatches. It is known that there are two types of tuna, namely Auxis rochei and Auxis thazard. The catch is in principle the output of fishing activities, while the effort needed in principle is an input from the fishing activities, fisheries production in an area has increased or decreased can be seen from the results of CPUE. The highest CPUE value of gill nets is 53.75 tails / effort, the highest CPUE value of hand line is 75 tails / effort.

Perbandingan Kemampuan Satelit SAR, Optik dan Kombinasi SAR & Optik Untuk Mendeteksi Area Mangrove di Teluk Benoa I Wayan Matsya Deva Nagendra; I Wayan Gede Astawa Karang; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 5 No 2 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Mangrove in Benoa Bay plays important roles in the southern Bali island. Mangrove habitat in Benoa Bay has undergone in area changes due to various anthropogenic activities and natural factors, it is important to monitor the distribution of the mangrove forests. Mangrove area changes can be detected using remote sensing technology. This research is to aims the capabilities of radar and optical satellites in mangroves detection using supervised classification Maximum likelihood & Minimum distance. The results showed that radar images failed to detect mangroves as a separate class and produced three classes of land cover (urban, vegetation and waters), optical images and a combination of radar & optic images capable of detecting mangroves as a separate class and produce five land cover class (vegetation other, urban, mangroves, waters and agriculture). The evaluation of the Maximum likelihood classification shows that the combination of radar & optical images scenario has the highest overall accuracy and kappa accuracy with value of 91.35% and 87.01% respectively. Minimum distance classification shows that the optical image scenario has the highest accuracy and highest kappa accuracy with value of 80.83% and 72.51%. The results of the accuracy evaluation shown that the maximum likelihood has higher accuracy than the minimum distance classification method.

Laju Pertumbuhan Kerang Abalon Haliotis squamata Melalui Budidaya IMTA (Integrated Multi Trophic Aquaculture) di Pantai Geger, Nusa Dua, Kabupaten Badung, Provinsi Bali Heny Hayati; I Gusti Ngurah Putra Dirgayusa; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 4 No 2 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Abalone is an important non fishery commodity that has high potential value to be developed. Abalone culture still faces some problems, such as, relatively slow growth rate, low survival rate and causing environmental pollution. One of the efforts to tackle the problems, is applying the culture system that is environmental friendly, such as IMTA (Integrated Multitrophic Aquaculture). This research aims to identify the growth rate and survival rate of the abalone (Haliotis squamata) and the suitability of chemical and physical environment parameter supporting the integration culture of abalone and seaweed (Gracilaria sp) on different stocking density at Geger beach, Nusa Dua, Bali. This research was performed in 45 days using a complete randomized design method that consist of three treatments and three repetition. The result showed that the highet growth rate was on treat ment T3 which consisted of abalone (Haliotis squamata) 40 individu and 10 bunches of seaweed (Gracilaria sp) 100 grams weight/each individu (0.76%/day), then It followed by T2 treatment that was integrated with 10 bunches of seaweed 50 grams (0.71%/day). The lowest growth rate observed on treatment T1 (control/monoculture) which consisted of 40 individu abalone (Haliotis squamata) (0.59%/day). The highest survival rate found on treatment T2 (97.5%) and followed by treatment T1 as control (94.5%), while the lowest number was found on treatment T3 (83.3%). Physical chemical water quality parameters showed that It supported the growth of both, abalone (Haliotis squamata) and seaweed (Gracilaria sp.) at Geger Beach, Nusa Dua, Badung Regency, Bali Province.

Daya Dukung Ekosistem Mangrove Terhadap Hasil Tangkap Nelayan di Taman Hutan Raya Ngurah Rai, Bali Jero Ketut Tri Ayu Lestari; I Wayan Gede Astawa Karang; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 4 No 1 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Mangrove ecosystem is a complex ecosystem. The sustainability of fish resources is highly dependent on the sustainability of the mangrove ecosystem. The purpose of this research is to know the mangrove density, fish catching from fisherman in mangrove area and relationship of mangrove vegetation and the quality of the waters with the fish catching in the mangrove. Data collections include mangrove condition, fish catching, and water environment parameter. Research conducted in the mangrove area Mina Werdhi Batulumbang (TP I) and Simbar Segara (TP II). The results of this study found 5 species of mangrove. The density values of species at research site I ranged between 0.02 ind / m2 - 0.08 ind / m2. While the density value of species in this research site II ranged between 0.01 ind / m2 - 0.07 ind / m2. Rhizophora mucronata type has the highest density. Fish catching is the largest average in research place I, that is 1.42 kg /day /fisherman with mangrove area 2,397 Ha and the research of site II shows that the fish production of fisherman catches of 0,8 kg / day / fisherman with mangrove area 1,986 Ha. There is a positive relationship between the density and area of mangrove with the number of fish catching, where the fish catching will increase when the mangrove area also increases and there is a strong relationship between the catch and dissolved oxygen.

Pengaruh Indian Ocean Dipole (IOD) Terhadap Produksi Penangkapan Ikan Lemuru (Sardinella lemuru) di Perairan Selat Bali I Dewa Gede Alit Sujana; I Dewa Nyoman Nurweda Putra; Ni Luh Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 6 No 1 (2020)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2020.v06.i01.p07

Indonesia is one of tropical country which is very vulnerable to extreme phenomena in its water, such as Indian Ocean Phenomena (IOD) that occurred in Indian Ocean. The Bali Strait is directly adjacent to the Indian Ocean in the south area. Bali Strait is a region in Indonesia that has a high potential fishery resources namely, lemuru (Sardinella lemuru). The purpose of this study is to observe correlation and influence of IOD on lemuru production in Bali Strait between 2012 - 2016. The data used in this research are lemuru data was collected from 3 fish landing base namely PPP Muncar, PPN Pengambengan and PPI Kedonganan and IOD data used Dipole Mode Index (DMI) monthly from 2012 – 2016. The calculation used correlation equation, regression of second order polynomial. The highest lemuru production during 5 years, from 2012 untill 2016 was in 2015, accounted of 27,144,784 kg and the lowest production was in 2012 accounted of 5,644,146 kg. Based on that results, the highest yield of lemuru in the transition period II (September - November) of 31,938,833 kg with an average yield of 2,129,256 kg and the lowest was in east season (June - August) of 9,216,230 with average yield of 614,415 kg. The influence of IOD Index with lemuru production in Bali Strait has a determination value (R2) of 0.0558 and has a correlation of 17.40% with a positive influence (directly proportional). It was categorized as very weak.

Studi Pertumbuhan Rumput Laut Jenis Kotoni (Eucheuma cottonii) dengan Menggunakan Metode Kurung Dasar dan Lepas Dasar di Perairan Geger, Bali Andreas Pratama Togatorop; I Gusti Ngurah Putra Dirgayusa; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 3 No 1 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

One of the factors that define the success of seaweed is the planting methods It self. It is important because the method will directly affect the seaweed production. The main problem faced by seaweed farmer is declining the production over years. There are several reasons causing that problem, including, predator, desease and environment degradation. The purpose of this research is investigating the effectiveness of two different seaweed planting methods with the respect to the seaweed growth rate. The two methods that mentioned previously are off bottom and off bottom bracket method. The two methods are basically simillar, the first method (off bottom) is a conventional method, on the other hand, the second method was given an additional nets in order to cover the off bottom construction. The space between each seaweed planting on two different methods are defined similar, which are 25 cm. The initial planting weight was measured 100 grams. Observation was done for 42 days (6 week) and data collection was performed every 7 days on total of 10 individual seaweed each treatment. Absolute weight, daily growth rate, daily growth and specific growth rate are calculated. The data analysis will be done using F test at ? = 0.05 (SPSS 12.0). The result found that the growth rate of seaweed (Eucheuma cottoni) under off bottom bracket was not significantly different compared to the off bottom method (?= 0.476).

Identifikasi Bakteri yang Berpotensi Mendegradasi Hidrokarbon dari Substrat Mangrove dengan Tekstur Berpasir, Berlumpur, dan Tanah Liat Desy Shintya Irene; I Gusti Ngurah Putra Dirgayusa; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 6 No 2 (2020)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2020.v06.i02.p4

Hydrocarbon compounds are commonly found in petroleum and gas, plastics, paraffins, and bitumen. Although hydrocarbons are the constituent compounds of the materials used by humans, some hydrocarbon compounds have adverse effects on the environment and humans. One alternative to solve this problem is by using Mangrove substrate in Ngurah Rai Forest Park, Bali which is the habitat of several species of bacteria that interfere with degrading hydrocarbons. This study aims to identify the bacteria that interfere with hydroxon, through macroscopic observation, microscopic and biochemical tests. The results of this study showed six isolate bacteria that interfere with degrading hydrocarbon compounds. Six isolates were from the genus Alcaligenes of sandy mangroves, Pseudomonas and Bacillus genus from muddy mangrove soils, and two genera of bacteria from clay substrate namely Alcaligenes and Bacillus. The disturbing bacterial proposals underlying the highest hydrocarbon were found on clay with a value of 58.51% and the lowest on sandy substrates, with a discount value of 0%. The highest value on the clay substrate can cause the clay substrate to bind hydrocarbons, air, nutrients, and oxygen higher than sandy and muddy soils. The lowest value on sandy substrate can lead to low bacterial capability and it takes a long time for bacteria to degrade hydrocarbons.

Co-Authors Abdi Jana Guna Andreas Pratama Togatorop Cindi Ayu Lestari Cok Istri Yudhantari Desy Shintya Irene Dwi Nindra Saputra Endang Wulandari Suryaningtyas Eriq Imanuel Hendra Yoga Pratama Heny Hayati I Dewa Ayu Ratna Raksa Eka Putri I Dewa Gede Alit Sujana I Dewa Nym. Nurweda P., I Gede Hendrawan I Gusti agung bayu Setiawan I Gusti Bagus Ngurah Adywan Surya Bhuwana I Gusti Bagus Sila Dharma I Gusti Ngurah Putra Dirgayusa I Ketut Junitha I Made Subali Arta Arta I Putu Gede Bayu Ade Wianta I Putu Oka Saduarsa I Wayan Gede Astawa Karang I Wayan Matsya Deva Nagendra I Wayan Nuarsa I Wayan Nuarsa Ida Bagus Agung Parahita Adiguna Ida Bagus Ketut Ravidhya Krisna Sekar Ika Arofa Setiawati Jefry Cristian Bulan Jenisia Barros Soares Jero Ketut Tri Ayu Lestari Kadek Yudiastuti Maulana Ilham Fahmy Alam Ni Kadek Ayu Dwi Lestari Ni Luh Watiniasih Pande Chrisna Aryasuta Putra, I Nyoman Giri Riris Christiani Gultom

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