Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Behavioral characteristics and spatio-temporal distribution of fish near the waters of Uljin marine ranch area in the East Sea using hydroacoustics

  • Euna Yoon (Fisheries Resources Research Center, National Institute of Fisheries Science) ;
  • Doo-Jin Hwang (School of Marine Technology, Chonnam National University) ;
  • Eun-Bi Min (Department of Fisheries Science, Chonnam National University)
  • Received : 2023.11.06
  • Accepted : 2024.01.02
  • Published : 2024.05.31
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Abstract

The present study was conducted to investigate the behavior and distribution characteristics of fishes near an artificial reef close to the waters of Uljin marine ranch. A 200-kHz, dual-beam frequency transducer was attached to the side of a ship for acoustic measurements. The fish formed small groups in the bottom layer near the artificial reef around the afternoon-sunset period; at night, the fish did not form groups and remained individually scattered. During dawn-sunrise and morning, the fish formed groups again and were found near the upper and middle layers of the artificial reef. High density of fish occurred near the middle of the nautical zone during morning, afternoon-sunset, and dawn-sunrise, periods; at nighttime, the distribution was uniform across the entire zone. Moreover, the mean Nautical Area Scattering Coefficients (NASC, m2/nmi2) value was highest during dawn-sunrise at 400.2 m2/nmi2, similar during night and morning (100.5 m2/nmi2), and lowest during afternoon-sunset (20.1 m2/nmi2). The present study is expected to provide the background for understanding the behavioral characteristics of fish living near artificial reefs and estimating the density and biomass of fish.

Keywords

Acknowledgement

This work was funded by grant from National Institute of Fisheries Science, Korea (R2024001), Ministry of Ocean and Fisheries.

References

  1. Akamatsu T, Takahashi H, Matsuda A. A monitoring system for the aggregated fish group by an acoustic-visual combined method. Scientist. 2003;4:18-26.
  2. Fabi G, Sala A. An assessment of biomass and diel activity of fish at an artificial reef (Adriatic sea) using a stationary hydroacoustic technique. ICES J Mar Sci. 2002;59:411-20. https://doi.org/10.1006/jmsc.2001.1173
  3. Hamano A, Tanoue H, Kieser R. The three-dimensional GIS using sonar information for coastal fisheries. In: Proceedings of the ICES Council Meeting; 2005; Aberdeen, UK.
  4. Hwang BK, Lee YW, Jo HS, Oh JK, Kang MH. Visual census and hydro-acoustic survey of demersal fish aggregations in Ulju small scale marine ranching area (MRA), Korea. J Korean Soc Fish Technol. 2015;51:16-25. https://doi.org/10.3796/KSFT.2015.51.1.016
  5. Hwang DJ, Park JS, Lee YW. Estimation of fish school abundance by using an echo sounder in an artificial reef area. J Kor Fish Soc. 2004;37:249-54.
  6. Hwang IJ, Lee JB, Choi SJ, Kim SK, Cha HK, Oh TY, et al. Reproductive capacity in starry flounder Platichthys stellatus from Uljin marine ranching area, Korea. Korean J Fish Aquat Sci. 2012;45:253-61. https://doi.org/10.5657/KFAS.2012.0253
  7. Kang DH, Im YJ, Lee CW, Yoo JT, Myoung JG. Hydroacoustic survey of spatio-temporal distribution of demersal fish aggregations near the west coast of Jeju island, Korea. Ocean Polar Res. 2008;30:181-91.
  8. Kang M, Nakamura T, Hamano A. A methodology for acoustic and geospatial analysis of diverse artificial-reef datasets. ICES J Mar Sci. 2011a;68:2210-21. https://doi.org/10.1093/icesjms/fsr141
  9. Kang M, Nakamura T, Hamano A. A new tool for visualising multi-dimensional datasets: an example of fish schools around artificial reefs. N Z J Mar Freshw Res. 2011b;46:179-90. https://doi.org/10.1080/00288330.2011.624525
  10. Kim HY, Hwang BK, Lee YW, Shin HO, Kwon JN, Lee KH. Hydro-acoustic survey on fish distribution and aggregated fish at artificial reefs in marine ranching area. J Korean Soc Fish Ocean Technol. 2011;47:139-45. https://doi.org/10.3796/KSFT.2011.47.2.139
  11. Lee CI, Jung HK, Kwon SM, Han MH, Seol KS, Park JM. Depth-dependent variability of fish Fauna in the coastal waters off Hupo, East Sea. Korean J Ichthyol. 2018;30:36-45. https://doi.org/10.35399/ISK.30.1.5
  12. Lee JB, Oh TY, Yeon IJ, Kim BY, Shin HO, Hwang BK, et al. Estimation of demersal fish biomass using hydroacoustic and catch data in the marine ranching area (MRA) of Jeju. J Korean Soc Fish Ocean Technol. 2012;48:128-36. https://doi.org/10.3796/KSFT.2012.48.2.128
  13. Oh TY, Cha HK, Chang DS, Hwang CH, Nam YJ, Kwak SN, et al. Seasonal variation and species composition of fishes communities in artificial reef unit at marine ranching area in the coastal waters off Jeju island, Korea. J Korean Soc Fish Ocean Technol. 2010;46:139-47.
  14. Sala A, Fabi G, Manoukian S. Vertical diel dynamic of fish assemblage associated with an artificial reef (Northern Adriatic Sea). Sci Mar. 2007;71:355-64. https://doi.org/10.3989/scimar.2007.71n2355
  15. Thorne RE, Hedgepeth JB, Campos J. Hydroacoustic observations of fish abundance and behavior around an artificial reef in Costa Rica. Bull Mar Sci. 1989;44:1058-64.
  16. Yoon BS, Park JH, Yoon SC, Yang JH, Lee SI, Kim JB, et al. Seasonal variations in the species composition of fisheries resources caught by trammel net in the Uljin marine ranching area, East Sea. Korean J Fish Aquat Sci. 2015;48:947-59. https://doi.org/10.5657/KFAS.2015.0947
  17. Yoon BS, Yoon SC, Lee SI, Kim JB, Yang JH, Park JH, et al. Community structure of demersal organisms caught by otter trawl survey in the Uljin marine ranching area, Korea. Korean J Fish Aquat Sci. 2011;44:506-15. https://doi.org/10.5657/KFAS.2011.0506
  18. Yoon EA, Hwang DJ, Kim HS, Lee SJ, Lee KS. Acoustic observation of the behavior of fish in an artificial reef. J Korean Soc Fish Ocean Technol. 2014;50:124-30. https://doi.org/10.3796/KSFT.2014.50.2.124