PENGUKURAN TARGET STRENGTH DAN STOK IKAN DI PERAIRAN PULAU PARI MENGGUNAKAN METODE SINGLE ECHO DETECTOR (Measurement of Target Strength and Fish Stock in Pari Islands Seawaters Using Single Echo Detector Method)

Manik, Henry M.; Nurkomala, Indah

doi:10.29244/jmf.7.1.69-81

Cited by 7 publications

(7 citation statements)

References 19 publications

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“…Echo integration is conducted at depths from 0 to -500 m (with a transducer tolerance of -2 m). TS value for fish ranges from -70 dB re 1 m 2 to -20 dB re 1 m 2 while for plankton it is lower [11], then refer to [26] a value of -50 dB re 1 m 2 will detect fish up to about 6 cm long.…”

Section: Analysing Hydroacoustic Datamentioning

confidence: 99%

“…From previous research, the processed data (tables, graphs, and maps) are very numerous and complex [3,5,7,8,11], so that a better and more dynamic visualization is needed to facilitate the delivery of analysis results. Among the outputs produced in previous research, there are a tables and graphs of the calculation results of fish density distribution estimates per depth, and fish density maps based on depth and time.…”

Section: Introductionmentioning

confidence: 99%

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Hydroacoustic method and GIS-Dashboard visualization for fish size in Banggai Sea Waters

Windra,

Manik,

Somantri

et al. 2024

BIO Web Conf.

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Estimating fish stocks, including their distribution and density, plays a vital role in the management of capture fisheries. Hydroacoustic technology is widely utilized for fish stock estimation study. In September 2022, BRIN and IPB University conducted hydroacoustic data measurement in the Banggai Sea as part of the “Banggai Upwelling Dynamics Exploration and Experiment” to estimate fish stocks. Very large fish (>58 cm) has a density of 12,452 fish km-2. The spatial distribution of fish occurs in the eastern waters of Banggai Island and the northern waters of Taliabu Island. The most significant potential is the epipelagic layer (0 to -200 meters), with very small-sized fish having the highest density, followed by large-sized and small-sized fish. To summarize the analysis results of fish density distribution , a GIS-Dashboard is utilized. This online platform integrates various maps and charts, offering an engaging and easily understandable visualization of the information.

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Section: Analysing Hydroacoustic Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydroacoustic method and GIS-Dashboard visualization for fish size in Banggai Sea Waters

Windra,

Manik,

Somantri

et al. 2024

BIO Web Conf.

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“…The Single Echo Detector (SED) function was deployed to identify an echo strength from a single target. SED is a technique for recognizing single fish echoes by reducing overlapping echoes, allowing it to be used in low signal-to-noise ratio situations (Manik and Nurkomala, 2016;Nurkomala, 2016).…”

Section: Data Processingmentioning

confidence: 99%

“…To accomplish this, several models illustrating the relationship between fish size and target strength should be used, from multispecies general equations to particular species-specific equations (Love, 1971;Frouzova et al, 2005;Lilja et al, 2000). The TS value may also be used to estimate the horizontal-vertical distribution, fish size, and fish biomass in the water column (Manik and Nurkomala, 2016;Pujiyati et al, 2017;Hidayat et al, 2019). Meanwhile, SV is the backscattering strength given by a certain mass in the unit volume, where SV is an important acoustic parameter in estimating fish biomass (Manik, 2013;.…”

Section: Introductionmentioning

confidence: 99%

Fish Stock Status Assessment in Alue Naga Waters Using A 200 Khz Single Beam Echosounder

et al. 2023

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Monitoring fish stocks is an important part of sustainable management of fisheries resources. Conducting the current evaluation is very difficult since there are no reliable data on the potential for fisheries in the waters surrounding Banda Aceh city. The hydroacoustic method was used for the first time in the waters of Alue Naga, located north of Banda Aceh, to evaluate the condition of fish stocks. A single beam scientific echosounder with a frequency of 200 kHz was used to collect hydroacoustic data in the area. The collected data was then processed using the Sonar5-Pro software. Cell integration was carried out at an interval of 10 meters vertically with an elementary sampling distance (ESD) of 200 m. While the volume backscattering strength (SV) value tends to be the highest in intermediate layers, the target strength (TS) value was found to be maximum in deeper layer, reaching a maximum value of -49.46 dB at a depth of 51–60 m. Area density value (#.ha-1) was found to be the highest at a depth of 11-20 m, while Biomass (g.ha-1) at a depth of 21-30 m was the highest among other depth layers with a value of 1558 g.ha-1. According to the in-situ catches of Carangoides, Selaroides, Aphareus, Variola, and Priacanthidae, there are a number of potential reef fish resources in the waters of Alue Naga. The findings of this study strongly support the conclusion that the hydroacoustic method effectively provides comprehensive information on the horizontal and vertical distribution of fish in Alue Naga waters.

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“…Upaya memperoleh informasi dan data yang akurat diperlukan kombinasi antara ilmu pengetahuan dan teknologi sebagai dasar dalam mempertimbangkan metode yang baik. Salah satu metode yang dapat diandalkan dalam mendeteksi ikan adalah melalui pendekatan hidroakustik untuk mengetahui kepadatan ikan pelagis (Manik et al, 2016). Kemudian.…”

Section: Pendahuluanunclassified

Relationship of Acoustic Volume Backscattering of Fish Aggregations and Density of Pelagic Fish in The Waters of Pulau Baai Bengkulu City

Bakhtiar

Septiyani

Anggoro

2022

Barakuda45 J. Ilmu Perikanan dan Kelautan

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The waters of Pulau Baai are unique waters that are closed or protected which have small pelagic fish resources, used as pelagic fishing areas for local fishermen so that they can help the community's economy. One method that can be used to describe the distribution of pelagic fish density is the use of hydroacoustic technology. This study aims to analyze the value of acoustic backscattering (volume backscattering strength, SV) of pelagic fish and associated with the estimation of the density of pelagic fish in the waters of Pulau Baai, Bengkulu City, through in-situ acoustic measurements. The results showed that in the waters of Pulau Baai the highest average SV value was -50.47 dB, which was thought to have a fish density of 2.57 ind/m3 while for a low average SV with a value of -57.48 dB, it was assumed to have a density of 0.04 ind/m3. The density of pelagic fish is acoustically estimated at 26.47 ind/m3 in the water column of Pulau Baai. The SV value affects the estimated fish density by 69% and is categorized as having a high correlation and a positive correlation direction.

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PENGUKURAN TARGET STRENGTH DAN STOK IKAN DI PERAIRAN PULAU PARI MENGGUNAKAN METODE SINGLE ECHO DETECTOR (Measurement of Target Strength and Fish Stock in Pari Islands Seawaters Using Single Echo Detector Method)

Cited by 7 publications

References 19 publications

Hydroacoustic method and GIS-Dashboard visualization for fish size in Banggai Sea Waters

Hydroacoustic method and GIS-Dashboard visualization for fish size in Banggai Sea Waters

Fish Stock Status Assessment in Alue Naga Waters Using A 200 Khz Single Beam Echosounder

Relationship of Acoustic Volume Backscattering of Fish Aggregations and Density of Pelagic Fish in The Waters of Pulau Baai Bengkulu City

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