The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY (한국해양학회지:바다)

The Korean Society of Oceanography (한국해양학회)
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Spatial Distribution of Soft Bottom Macrobenthos of Yeoja Bay in Summer Season, South Coast of Korea

여자만 연성저질의 여름철 대형저서동물 공간분포

  • Lim, Hyun-Sig (Department of Marine and Fisheries Resources, Mokpo National University)
  • 임현식 (목포대학교 해양수산자원학과)
  • Received : 2014.03.12
  • Accepted : 2015.05.15
  • Published : 2015.05.31
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Abstract

Macrobenthic community was studied at 87 stations including intertidal and subtidal area in Yoja Bay, south coast of Korea in summer season of July 2001. Duplicate sediment samples were taken using a van Veen grab ($0.1m^2$) in each station. Mud facies of the sediments were widly distributed in the bay. And relatively high content of sand was shown in the Bulgyo-cheon stream estuary. A total of 274 species was occurred with a mean density of $2,346ind./m^2$ and a mean biomass of $78.2g/m^2$. The polychaetes were species- and density-dominant faunal group with a total of 122 species (44.5% of the total number of species), and mean density of $1,543ind./m^2$ (65.8% of the mean density). Meanwhile, molluscs were biomass-dominant faunal group with $44.4g/m^2$. Bio-Env. analysis showed that the combination of bottom salinity and sand content of the surface sediments was highly correlated to the major macrobenthic communities. The macrobenthic species number, decreasing toward inner bay from mouth of the bay, was significantly correlated to the sediment environmental variables and bottom water salinity. The spatial distribution of abundance showed significant correlation to the sand and mud contents and mean grain size of the surface sediments. Major dominant species were Minuspio japonica (polychaete) with a mean density of $1,167ind./m^2$ at upper part of the bay where salinity was low and Eriopisella sechellensis (amphipod) with $152ind./m^2$ in central part of the bay. Species diversity (H') was $3.0{\leq}$ in the mouth part of the bay and ranged 2.0-3.0 in the inner part of the bay, which showed a significant positive correlation to bottom salinity. Total number of species also showed significant correlations to the sediment composition and bottom salinity. Based on the cluster analysis the macrobenthic community of the bay was classified into five station groups from the bay mouth toward the inner part of the bay depending on the species composition. From the SIMPER analysis Minuspio japonica, Eriopisella sechellensis and Sternaspis scutata mainly contributed to the classification of station group. These results suggested that the macrobenthic communities of the bay were mainly influenced by bottom salinity together with sediment composition, and that the studies of spatial distributions of major dominant species and benthic communities should be conducted continuously to monitor the Yeoja Bay benthic environment.

여자만 저서동물 군집 구조를 파악하기 위하여 87개 정점에서 2001년 7월 grab 채집을 통한 현장 조사를 수행하였다. 여자만은 만 중앙부를 중심으로 니질 퇴적상이 폭넓게 나타나고 있으며 하천으로부터 담수가 유입되는 하구역에서는 모래 함량이 높았다. 조사기간 동안 총 274종, 평균 2,346 개체/$m^2$ 및 $78.2g/m^2$의 저서동물이 출현하였다. 출현종수에서는 다모류가 122종(45%)으로서 가장 우점하였으며, 갑각류가 70종(26%), 연체동물이 57종(21%) 출현하였다. 출현종수 공간분포는 퇴적상 및 저층염분과 유의한 상관관계가 있었다. 출현밀도에서도 다모류가 1,543 개체/$m^2$로서 66%를 점유하였는데 모래 함량과는 양의 상관관계를, 니질 및 평균 입도와는 음의 상관관계를 보였다. 극피동물의 밀도는 염분과 양의 상관관계를 보였다. 반면 생체량에서는 연체동물이 $44.4g/m^2$으로서 57%를 점유하였는데, 실트 및 분급과 음의 상관관계를 보였다. Bio-Env 분석 결과 저층염분과 모래 함량의 조합이 대형저서동물 군집에 영향을 미치는 주된 환경요소로 나타났다. 주요 우점종으로서는 기수성 다모류인 Minuspio japonica가 평균 1,167 개체/$m^2$로서 가장 우점하였으나 벌교천 하구역에만 제한적으로 분포하였으며, 옆새우류인 Eriopisella sechellensis의 밀도는 152 개체/$m^2$로서 여자만 내에 광범위하게 분포하였다. 또한 다모류인 Sternaspis scutata와 이매패류의 Corbiculina sp.도 우점적으로 출현하였다. 종 다양도(H')는 여자도를 중심으로 여자만 남측해역은 3.0 이상의 값을 나타낸 반면, 북측해역은 2.0~3.0 범위의 값을 나타내었으며 염분과 양의 상관관계를 보였다. 집괴분석 결과 5개 정점군으로 구분되었는데, SIMPER 분석결과 Minuspio japonica, Eriopisella sechellensis 그리고 Sternaspis scutata의 기여도가 높았으며 여자만 입구에서부터 내만으로 들어가면서 정점군이 순차적으로 배열되는 양상을 보였다. 본 연구 결과로부터 여자만의 여름철 대형저서동물 군집은 퇴적상과 저층염분에 의해 영향을 받고 있음을 알 수 있으며 여자만의 저서환경 변동을 파악하기 위해 주요 우점종 및 군집 공간 분포에 대한 지속적인 모니터링이 필요하다고 판단된다.

Keywords

References

  1. Baik, S.G. and S.G. Yun, 2000. Community structure of the macrobenthos in Chinhae Bay, Korea. J. Korean Fish. Soc., 33: 572-580.
  2. Bray, J.R. and J.T. Curtis, 1957. An ordination of the upland forest communities of southern Wisconsin. Ecol. Monogr., 27: 325-349. https://doi.org/10.2307/1942268
  3. Bremner, J., S.I. Rogers and C.L.J. Frid, 2006. Matching biological traits to environmental conditions in marine benthic ecosystems. J. of Marine Systems, 60: 302-316. https://doi.org/10.1016/j.jmarsys.2006.02.004
  4. Choi, J.W. and J.Y. Seo, 2007. Application of biotic indices to assess the health condition of benthic community in Masan Bay, Korea. Ocean and Polar Res., 29: 339-348. https://doi.org/10.4217/OPR.2007.29.4.339
  5. Choi, J.W., S. Hyun and M. Chang, 2003. The summer benthic environmental conditions assessed by the functional groups of macrobenthic fauna in Gwangyang Bay, southern coast of Korea. Korean J. Environ. Biol., 21: 101-113.
  6. Constale, A.J. 1999. Ecology of benthic macroinvertebrates in softsediment environments: a review of progress towards quantitative models and predictions. Australian J. of Ecology, 24: 452-476. https://doi.org/10.1046/j.1442-9993.1999.00977.x
  7. Dauvin, J.-C., 2008. Effects of heavy metal contamination on the macrobenthic fauna in estuaries: The case of the Seine estuary. Marine Pollut. Bull., 57: 160-169. https://doi.org/10.1016/j.marpolbul.2007.10.012
  8. Folk, R.L. and W.C. Word, 1957. Brazos river bar: A study in the significance of grain-size parameters. J. Sed. Pet., 27: 3-27. https://doi.org/10.1306/74D70646-2B21-11D7-8648000102C1865D
  9. Gomez Gesteira, J.L. and J.-C. Dauvin, 2000, Amphipods are good bioindicators of the impact of oil spills on soft-bottom macrobenthic communities. Marine Pollut. Bull., 40: 1017-1027. https://doi.org/10.1016/S0025-326X(00)00046-1
  10. Hong, J.S. and J.W. Yoo, 1996. Salinity and sediment types as sources of variability in the distribution of the benthic macrofauna in Han River estuary and Kyonggi Bay, Korea. J. Korean Soc. Oceanogr., 31: 217-231.
  11. Hue, H.K., D.H. Kim, S.H. Ahn and K.W. Park. 2000. Characteristics of the sedimentary environment in Yoja Bay in the summer of 1998, Korean J. Environ. Biol. 18(2): 227-235.
  12. Hutchings, P., 1998. Biodiversity and functioning of polychaetes in benthic sediments. Biodiversity and Conservation, 7: 1133-1145. https://doi.org/10.1023/A:1008871430178
  13. Jung, R.H., J.S. Hong and J.H. Lee, 1995. Temporal changes of community structure in two subtidal polychaetes assemblages in Kwangyang Bay, Korea. Korean Soc. Oceangr., 30: 390-402.
  14. Jung, R.H., J.S. Hong and J.H. Lee, 1998. Spatial and seasonal patterns of polychaete community during the reclamation and dredging activities for the construction of the Pohang Steel Mill Company in Kwangyang Bay, Korea. J. Korean Fish. Soc., 30: 730-743.
  15. Kim, Y.H., H.C. Shin and K.H. Lim, 2005. Distribution of benthic polychaeta community in Yoja Bay, Korea. J. Korean Fish. Soc., 38: 399-412.
  16. Langhamer, O., 2010. Effects of wave energy converters on the surrounding soft-bottom macrofauna (west coast of Sweden). Marine Environmental Res., 69: 374-381. https://doi.org/10.1016/j.marenvres.2010.01.002
  17. Lim, H.S. and J.S. Hong, 1997. Ecology of the macrozoobenthos in Chinhae Bay Korea 2. Distribution pattern of the major dominant species. J. Korean Fish. Soc., 30: 161-174.
  18. Lim, H.S. and K.Y. Park, 1999. Community structure of the macrobenthos in the soft bottom of Youngsan River estuary, Korea. 1. Benthic environment. J. Korean Fish. Soc., 31: 330-342.
  19. Lim, H.S. and J.W. Choi, 2001a. Macrobenthic community in the soft bottom around Sorido Island, southern coast of Korea. J. Korean Fish. Soc., 34: 225-237.
  20. Lim, H.S. and J.W. Choi, 2001b. Community structure of subtidal macrobenthos in Hampyung Bay during autumn in 1997, southwestcoast of Korea. J. Korean Fish. Soc., 34: 326-339.
  21. Lim, H.S. and J.S. Hong, 2002. Spatial distribution of macrozoobenthos along the salinity gradient and sedimentary environment in the Watancheon estuary, Beobsungpo, southwest coast of Korea. The Sea J. Korean Soc. Oceanogr., 4: 80-92.
  22. Lim, H.S., J.G. Je, J.W. Choi and J.H. Lee, 1991. Distribution pattern of the macrozoobenthos at Yoja Bay in summer. Ocean Research, 13: 31-46.
  23. Lim, H.S., J.W. Choi, J.G. Je and J.H. Lee, 1992. Distribution pattern of macrozoobenthos at the farming ground in the western part of Chinhae Bay, Korea. J. Korean Fish. Soc., 25: 115-132.
  24. Lim, H.S., H.S. Park, J.W. Choi, J.G. Je, 1999. Macrobenthic community of the subtidal soft bottom of Aeanggang Bay in the southern coast of Korea. J. Korean Soc. Oceanogr., 4: 80-92.
  25. Lim, H.S., R.J. Diaz, J.S. Hong and L.C. Schaffner, 2006. Hypoxia and benthic community recovery in Korean coastal waters. Mar. Pollut. Bull., 52: 1517-1526. https://doi.org/10.1016/j.marpolbul.2006.05.013
  26. Lim, H.S., J.W. Choi and S.D. Choi, 2012. Spatial Distribution of Macrobenthos in Sueocheon Stream Estuary at the Nothern Part of Gwangyang Bay, Korea. The SeaJ. Korean Soc. Oceanogr., 17: 76-86.
  27. Ma, C.W, S.Y. Hong and H.S. Lim, 1995. Macrobenthic fauna of Deukryang Bay, Korea. J. Korean Fish. Soc., 28: 503-516.
  28. McManus, J.W. and D. Pauly, 1990. Measuring ecological stress: variations on a theme by R.M. Warwick. Mar. Biol., 106: 305-308. https://doi.org/10.1007/BF01314814
  29. MOMAF, 2001. Studies in inventories and a sustainable use of tidalflats in Korea-The eastern part of Jeollanamdo and Jeollabukdo-BSPM 118-00-1370-3. pp. 1214.
  30. Park, H.S., H.S. Lim and J.S. Hong, 2000. Spatio- and temporal pattern of benthic environment and macrobenthos community on subtidal soft-bottom in Chonsu Bay, Korea. J. Korean Fish. Soc., 33: 262-271.
  31. Pearson, T.H. and R. Rosenberg, 1978. Macrobenthic succession in relation to organic enrichment and pollution of the marine environment. Oceanogr. Mar. Biol. Ann. Rev., 16: 229-311.
  32. Rosenberg, R., 1995. Benthic marine fauna structured by hydrodynamic processes and food availability. Netherlands J. Sea Res., 34: 303-317. https://doi.org/10.1016/0077-7579(95)90040-3
  33. Shannon, C.E. and W. Wiener, 1963. The mathematical theory of communication. Urbana, Universityof Illinois Press, p.125.
  34. Shin, H.C., 1995. Benthic polychaetous community in Kamak Bay, southern coast of Korea. J. Korean Soc. Oceanogr., 30: 250-261.
  35. Shin, H.C. and C.H. Koh, 1990. Temporal and spatial variation of polychaete community in Kwangyang Bay, southern coast of Korea. J. Oceanol. Soc. Korea, 25: 205-216.
  36. Shin, H.C. and C.H. Koh, 1993. Polychaetous community in the coastal zone off Samchunpo, southern sea of Korea. J. Oceanol. Soc. Korea, 28: 305-312.
  37. Shin, H.C., S.S. Choi and C.H. Koh, 1992. Seasonal and spatial variation of polychaetous community in Youngil Bay, southeastern Korea. J. Oceanol. Soc. Korea, 27: 46-54.
  38. Shin, H.C., S.M. Yoon and C.H. Koh, 2001. Spatial distribution of benthic macrofaunal community in Ulsan Bay and Onsan Bay, eastern coast of Korea. The Sea J. Korean Soc. Oceanogr., 6: 180-189.
  39. Whittacker, R. J. (Ed.), 1975. Communities and Ecosystems, 2nd Edition. Macmillan, New York, pp. 1-385.
  40. Wildsmith, M.D., T.H., Rose, I.C., Potter, R.M. Warwick and K.R. Clarke, 2011. Benthic macroinvertebrates as indicators of environmental deterioration in a large microtidal estuary. Mar. Pollut. Bull., 62: 525-538. https://doi.org/10.1016/j.marpolbul.2010.11.031
  41. Yoo, J.W., Y.W. Lee, J.L. Ruesink, C.G. Lee, C.S. Kim, M.R. Park, K.T. Yoon, I.S. Hwang, J.H. Maeng, R. Rosenberg and J.S. Hong, 2010. Environmental quality of Korean coasts as determined by modified Shannon-Wiener evenness proportion. Environ. Monit. Assess., 170: 141-157. https://doi.org/10.1007/s10661-009-1222-0

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