Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Changes in Planktonic Communities and Environmental Factors between Open Versus Closed Artificial Marine Microcosms

개방형 및 폐쇄형 인공해양소형생태계에서 미소생물상 및 수환경의 변화

  • Jung, Seung Won (Library of Marine Samples, Korea Institute of Ocean Science & Technology) ;
  • Kang, Don-Hyug (Maritime Security Research Center, Korea Institute of Ocean Science & Technology)
  • 정승원 (한국해양과학기술원 해양시료도서관) ;
  • 강돈혁 (한국해양과학기술원 해양방위연구센터)
  • Received : 2015.04.03
  • Accepted : 2015.11.23
  • Published : 2015.12.31
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Abstract

To understand differences of environmental factors and planktonic communities in closed (CS) versus open (OS) enclosed experimental systems, we performed a study on a 100-L indoor-type artificial marine microcosm. For environmental factors, including water temperature, dissolved inorganic phosphorus, and dissolved silica, there were no significant differences between CS and OS; however, salinity was higher in CS than that of OS due to the evaporation effect. The concentration of dissolved oxygen and dissolved inorganic nitrogen was lower in CS than in OS. The abundance of phytoplankton was lower in CS than in OS. However, abundance of autotrophic nanoflagellates and heterotrophic bacteria varied inversely with that of phytoplankton abundances. In particular, the abundance of heterotrophic nanoflagellates and ciliates increased with bacterial growth after a time lag. Therefore, environmental factors and planktonic communities in CS gradually changed over time and characterized a different artificial ecosystem than in OS.

본 연구는 외부 해수가 계속적으로 유입되는 개방형 인공생태계와 해수의 유입이 없는 폐쇄형 인공생태계에서 미소생태계의 변화를 파악하고자 실험실 내에서 100 L 크기의 인공해양소형생태계 연구를 수행하였다. 수온은 폐쇄형 및 개방형 인공생태계에서 큰 차이가 없었다. 염분은 폐쇄형 생태계에서 수체의 증발에 따라 증가를 보였고 용존산소 및 용존무기질소 농도는 폐쇄형에서 감소하는 반면, 개방형에서는 초기농도와 큰 차이를 보이지 않았다. 용존무기인 및 용존규소는 두 시스템에서 차이가 없었다. 식물플랑크톤은 폐쇄형에서 감소를 하였던 반면, 개방형에서는 증가 양상을 보였으나 Autotrophic nanoflagellates는 식물플랑크톤 개체수의 변동과 반대되는 양상을 보였다. 타가영양세균은 폐쇄형에서 증가하는 양상을 보였고, 이와 함께 heterotrophic nanoflagellates 및 섬모충이 시간차를 두어 증가하는 양상을 보였다. 그러나, 개방형 인공생태계에서는 특이한 변화를 나타내지 않았다. 결론적으로, 폐쇄형 인공생태계와 개방형 인공생태계에서 미소생물상 및 환경요인들의 변화의 연구는 향후 연구자들이 인공생태계 연구에 있어서 기초자료로 활용할 수 있을 것으로 기대하며, 신뢰성 있는 인공생태계 연구를 수행할 수 있을 것으로 판단된다.

Keywords

References

  1. Azov Y. 1986. Seasonal patterns of phytoplankton productivity and abundance in near-shore oligothrophic waters of the Levant Basin (Mediterranean). J. Plankton Res. 8:41-53. https://doi.org/10.1093/plankt/8.1.41
  2. Baek SH, M Son, SW Jung, DH Na, H Cho, M Yamaguchi, SW Kim and YO Kim. 2014. Enhanced species-specific chemical control of harmful and non-harmful algal bloom species by the thiazolidinedione derivative TD49. J. Appl. Phycol. 26:311-321. https://doi.org/10.1007/s10811-013-0046-z
  3. Berman T, DW Townsend, SZ El Sayed, CC Trees and Y Azov. 1984. Optical transparency, chlorophyll and primary productivity in the Eastern Mediterranean near the Israeli coast. Oceanol. Acta. 7:367-372.
  4. Bonin DJ, MC Bonin and T Berman. 1989. Mise en evidence experimentale des facteurs nutritifs limitants de la production du micro-nanoplancton et de l'ultraplancton dans une eau cotiere de la Mediterranee orientale (Haifa Israel). Aquat. Sci. 51:129-159. https://doi.org/10.1007/BF00879299
  5. Caron DA. 1983. Technique for enumeration of heterotrophic and phototrophic nanoplankton, using epifluorescence microscopy, and comparison with other procedures. Appl. Environ. Microbiol. 46:491-498.
  6. Grice GM and MR Reeve. 1982. Introduction and description of experimental ecosystems. pp. 1-9. In marine mesocosms. Biological and chemical research in experimental ecosystem (Grice GD and MR Reeve eds.). Springer-Verlag, New York.
  7. Herut B, A Almogi-Labin, N Jannink and I Gertman. 2000. The seasonal dynamics of nutrient and chlorophyll a concentrations on the SE Mediterranean shelf-slope. Oceanol. Acta. 23:771-781. https://doi.org/10.1016/S0399-1784(00)01118-X
  8. Howarth RW. 1988. Nutrient limitation of net primary production in marine ecosystems. Ann. Rev. Ecol. 19:89-110. https://doi.org/10.1146/annurev.es.19.110188.000513
  9. Humphrey GF and SW Jeffrey. 1997. Tests of accuracy of spectrophotometric equations for the simultaneous determination of chlorophylls a, b, c1 and c2. pp. 616-621. In Phytoplankton pigments in oceanography: guidelines to modern methods (Monographs on oceanographic methodology) (Jeffrey SW, RFC Mantoura and SW Wright eds.). UNESCO pub, Paris.
  10. Jung SW, YH Kang, SH Baek, D Lim and MS Han. 2013. Biological control of Stephanodiscus hantzschii (Bacillariophyceae) blooms in a field mesocosm by the immobilized algicidal bacterium Pseudomonas fluorescens HYK0210-SK09. J. Appl. Phycol. 25:41-50. https://doi.org/10.1007/s10811-012-9836-y
  11. Jung SW, YH Kang, T Katano, BH Kim, SY Cho, JH Lee, YO Kim and MS Han. 2010a. Testing additions of Pseudomonas fluorescens HYK0210-SK09 to mitigate blooms of the diatom Stephanodiscus hantzschii in small- and large-scale mesocosms. J. Appl. Phycol. 22:409-419. https://doi.org/10.1007/s10811-009-9473-2
  12. Jung SW, BH Kim, T Katano, DS Kong and MS Han. 2008. Pseudomonas fluorescens HYK0210-SK09 offers species-specific biological control of winter algal blooms caused by freshwater diatom Stephanodiscus hantzschii. J. Appl. Microbiol. 105:186-195. https://doi.org/10.1111/j.1365-2672.2008.03733.x
  13. Jung SW, OY Kwon, CK Joo, JH Kang, M Kim, WJ Shim and YO Kim. 2012. Stronger impact of dispersant plus crude oil on natural plankton assemblages in short-term marine mesocosms, J. Hazard. Mater. 217-218:338-349. https://doi.org/10.1016/j.jhazmat.2012.03.034
  14. Jung SW, D Lim, HH Shin, DH Jeong and YH Roh. 2011. Relationship between physic-chemical factors and chlorophyll-a concentration in surface water of Masan Bay: Bidaily monitoring data. Korean J. Environ. Biol. 29:98-106.
  15. Jung SW, JS Park, OY Kown, JH Kang, WJ Shim and YO Kim. 2010b. Effects of crude oil on marine microbial communities in short term outdoor microcosms. J. Microbiol. 48:594-600. https://doi.org/10.1007/s12275-010-0199-2
  16. Jung SW, SM Yun, JW Yoo, Z Li, PG Jang, D Lim, YC Lee, HU Lee, TK Lee, J Heo, JH Lee and MS Han. 2015. Can the algicidal material Ca-aminoclay be harmful when applied to a natural ecosystem? An assessment using microcosms. J. Hazard. Mater. 298:178-187. https://doi.org/10.1016/j.jhazmat.2015.05.012
  17. Kang JH and WS Kim. 2006. The effect of enhanced zooplankton on the temporal variation of plankton in a mesocosm. J. Ocean Eng. Technol. 9:109-119.
  18. Kang JH, WS Kim, K Shin, M Chang and KC Hwang. 2005. The effect of enhanced nitrate input on the temporal variation of the plankton community in a mesocosm. Ocean Polar Res. 27:341-349. https://doi.org/10.4217/OPR.2005.27.3.341
  19. Kim YT, YH Jeong, YJ Chae, CW Rhee, SY Kim, KW Choi and JS Yang. 2006. Variation of water qualities due to freshwater introduction to tidal flat A mesocosm study. J. Korean Soc. Oceanogr. 11:49-67.
  20. Kim WS. 2001. Application of enclosed experimental ecosystem to the study on marine ecosystem. Korean J.Environ. Biol. 19:183-194.
  21. Kimor B, T Berman and A Schneller. 1987. Phytoplankton assemblages in the deep chlorophyll maximum layers off the Mediterranean Coast of Israel. J. Plankton Res. 9:433-443. https://doi.org/10.1093/plankt/9.3.433
  22. KORDI. 2000. Mesocosm study on the fate of organic pollutants (BSPE 99765-00-1251-3). Research report of Korea Ocean Research & Development Institute.
  23. Kress N and B Herut. 2001. Spatial and seasonal evolution of dissolved oxygen and nutrients in the Southern Levantine Basin (Eastern Mediterranean Sea). Chemical characterization of the water masses and inferences on the N : P ratios. Deep-Sea Res. PT. I. 48:2347-2372. https://doi.org/10.1016/S0967-0637(01)00022-X
  24. Lalli CM. 1990. Enclosed experimental marine ecosystems: a review and recommendation - a contribution of the scientific committee on oceanic research working group 85. Coastal and Estuarine Studies. Springer-Verlag, New York.
  25. Porter KG and YS Feig. 1980. The use of DAPI for identification and counting aquatic microflora. Limnol. Oceanogr. 25:943-948. https://doi.org/10.4319/lo.1980.25.5.0943
  26. Yang JS and YH Jeong. 2011. Mesocosm as a scientific tool for marine science: Focused on the soft-bottom environment. J. Korean Soc. Mar. Environ. Eng. 14:93-106. https://doi.org/10.7846/JKOSMEE.2011.14.2.093