Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Physical habitat and chemical water quality characteristics on the distribution patterns of ecologically disturbing fish (Largemouth bass and Bluegill) in Dongjin-River Watershed

동진강 수계에서 생태 교란어종(큰입배스, 불루길)의 분포에 대한 물리적 서식지 및 화학적 수질 특성

  • Kang, Yu-Jin (Department of Biological Science, College of Biological Sciences and Biotechnology, Chungnam National University) ;
  • Lee, Sang-Jae (Chemical Safety Division, Jeonbuk Regional Environmental Office) ;
  • An, Kwang-Guk (Department of Biological Science, College of Biological Sciences and Biotechnology, Chungnam National University)
  • 강유진 (충남대학교 생명시스템과학대학 생물과학과) ;
  • 이상재 (전북지방환경청) ;
  • 안광국 (충남대학교 생명시스템과학대학 생물과학과)
  • Received : 2018.11.12
  • Accepted : 2019.06.07
  • Published : 2019.06.30
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Abstract

The objective of this study was to analyze the distribution patterns of two exotic disturbing fish species (largemouth bass, Micropterus salmoides and bluegill, Lepomis macrochirus), their physical habitat features, and chemical water qualities from 13 sites of Dongjin River. The relationships between the fish distributions and water chemistry and physical habitat characteristics (i.e., bottom substrate) were evaluated by comparing dominant vs. absent regions of largemouth bass and bluegill. The relative abundance of the two species decreased sharply with decreased in the water quality in terms of BOD, PO4-P and pH, but not with NO3-N and conductivity. The bluegill showed no difference in habitat preference between the two regions with regard to the bottom structure, while the largemouth bass had significant differences in the bottom structures of silt, coarse gravels and boulders. The dominant species were Zacco platypus (14.6%), Lepomis macrochirus (14.0%), and Micropterus salmoides (9.8%) in the order of relative abundance, indicating that exotic species (24% in total) dominated the fish community, perhaps ensuing large ecological disturbances on the ecosystem. In conclusion, the results of this study suggest that the distribution of the two exotic species may be largely influenced by water quality of organic matter and nutrient pollutions.

본 연구에서는 동진강 수계에서 외래 교란어종(큰입배스와 블루길)에 대한 물리적 서식지 및 화학적 수질특성의 영향을 분석하였다. 또한 큰입배스(Micropterus salmoide)와 불루길(Lepomis macrochirus) 각각 어종에 대한 우점 지역(출현 지역)과 비출현 지역을 구분하였고, 수 화학(Water chemistry) 및 어류서식지 특성(하상구조 등)에 대한 상관도 분석을 실시하였다. 두 교란어종의 상대 풍부도는 BOD, PO4-P 및 pH의 수질이 악화됨에 따라 크게 감소하였으나, NO3-N 및 전기전도도에 따른 풍부도 변화는 보이지 않았다. 블루길은 동진강 수계의 우점 지역(출현지역)과 비출현 지역 두 지역 사이에 서식지 구조적 측면에서 유의한 차이를 보이지 않은 반면, 큰입배스는 두 지역 간의 비교군에서 뚜렷한 차이를 보였고, 특히, 실트, 자갈, 암반과 같은 하상구조에서 뚜렷한 차이를 보였다. 동진강에서 우점종은 피라미(14.6%), 불루길(14.0%) 및 큰입배스(9.8%)로서 나타났다. 즉, 외래 생태교란종이 전체 개체수의 24%를 차지하여, 동진강 수계는 외래종의 분포는 유기물 오염 및 영양염(P) 오염에 의해 크게 영향을 받는 것으로 나타났다.

Keywords

References

  1. Byon HK and SR Jeon. 1997. Feeding habit of Bluegill, Lepomis macrochirus introduced in Korea. Korean J. Environ. Biol. 15:165-174.
  2. Han JH and WK Paek. 2016. Water chemistry characteristics and fish fauna of Sodo stream watershed in Taebaeksan Provincial Park. Korean J. Environ. Ecol. 30:71-80. https://doi.org/10.13047/KJEE.2016.30.1.071
  3. Hur JW, HS Kang and MH Jang. 2011. Investigation on physical habitat condition and fish fauna in Dal stream of Han River Basin. J. Korean Soc. Environ. Eng. 33:564-571. https://doi.org/10.4491/KSEE.2011.33.8.564
  4. Kim HM, JH Kil, EH Lee and KG An. 2013. Distribution characteristics of largemouth bass (Micropterus salmoides) as an exotic species, in some medium-to-large size Korean reservoirs and physico-chemical water quality in the habitats. Korean J. Limnol. 46:541-550. https://doi.org/10.11614/KSL.2013.46.4.541
  5. Kim IS and JY Park. 2002. Freshwater Fishes of Korea. Kyohak Press, Seoul.
  6. Kim IS and WO Lee. 1984. Effects of stream modification in the Seomjin River on the fish communities of the Dongjin River in Korea. Korean J. Fish. Aquat. Sci. 17:549-556.
  7. Kim JR and CL Lee. 2001. Ichthyofauna and fish community from Dongjin River system, Korea. Korean J. Limnol. 42:39-47.
  8. Kim YP, EH Lee and KG An. 2009. Ecological health assessment of Dongjin River based on chemical measurement and fish assemblage analysis. Korean J. Limnol. 42:183-191.
  9. Ko MH, JY Park and YJ Lee. 2008. Feeding habits of an introduced large mouth bass, Micropterus salmoides (Perciformes; Centrachidae), and its influence of ichthyofauna in the Lake Okjeong, Korea. Korean J. Ichthyol. 20:36-44.
  10. Lee HW and SS Park. 2009. Trend analysis of water quality in Dongjin River Watershed. Korean J. Limnol. 42:39-47.
  11. Lee JW, JH Kim, SH Park, KR Choi, HJ Lee, JD Yoon and MH Jang. 2013. Impact of largemouth bass (Micropterus salmoides) on the population of Korean native fish, crucian carp (Carassius auratus). Korean J. Environ. Biol. 31:370-375. https://doi.org/10.11626/KJEB.2013.31.4.370
  12. Lee KB, CH Kim, DB Lee, JG Kim and CW Park. 2004. The flora and vegetation of the Dongjin River. Korean J. Environ. Agric. 23:33-40.
  13. Lee WO, H Yang, SW Yoon and JY Park. 2009. Study on the feeding habits of Micropetrus salmoides in Lake Okjeong and Lake Yongdam, Korea. Korean J. Ichthyol. 21:200-207.
  14. Margalef R. 1958. Information theory in ecology. Generation System 3:36-71.
  15. Moon WK, JH Han and KG An. 2010. Fish fauna and community analysis on Heuck Stream Watershed. Korean J. Limnol. 43:69-81.
  16. Park JY, SH Kim, MH Ko, MK Oh and JC Shin. 2009. Change of ichthyofauna and fish community on natural stream restoration in Jeonju-Chon stream, Jeollabuk-do, Korea. Korean J. Environ. Ecol. 23:381-391.
  17. Pielou EC. 1975. Ecological Diversity. Wiley, New York. p. 165.
  18. Sanders RE, RJ Miltner, CO Yoder and ET Rankin. 1999. The use of external deformities, erosion, lesions, and tumors (DELTanomalies) in fish assemblages for characterizing aquatic resources: a case study of seven Ohio streams. pp. 225-246. In Assessing the Sustainability and Biological Integrity of Water Resources using Fish Communities. CRC press, Boca Raton, Florida.
  19. Shannon CE and W Weaver. 1949. The mathematical theory of communication. University of Illinois Press, Urbana.
  20. Simpson EH. 1949. Measurement of diversity. Nature 163:688. https://doi.org/10.1038/163688a0
  21. Son YM and HB Song. 2006. Freshwater fishes of Geum River, Korea. Jisung Press, Seoul.
  22. Song HB, MS Byeon, DW Kang, CY Jang, JS Moon and HK Park. 2012. Population structure of bluegill, Lepomis macrochirus in Lakes of the Han River System, Korea. Korean J. Ichthyol. 24:278-286.
  23. Strahler AN. 1957. Quantitative analysis of watershed geomorphology. Eos. Trans. AGU 38:913-920. https://doi.org/10.1029/TR038i006p00913
  24. Wentworth CK 1922. A scale of grade and class terms for clastic sediments. J. Geol. 30:377-392. https://doi.org/10.1086/622910
  25. Woo HS. 2004. River Hydraulics. Cheongmoongak publishing, Seoul. pp. 362-363.
  26. Yoon JD, JH Kim, SH Park and MH Jang. 2018. The distribution and diversity of freshwater fishes in Korean Peninsula. KJEE 51:71-85. https://doi.org/10.11614/KSL.2018.51.1.071
  27. Yoon SJ, JK Choi and HG Lee. 2014. Comparison of fish distribution characteristics by substrate structure in the 4 streams. Korean J. Environ. Ecol. 28:302-313. https://doi.org/10.13047/KJEE.2014.28.3.302