Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Studies on Stream Ecosystem in the Bukhan River using Stable Isotopes

안정동위원소를 이용한 북한강 하천생태계 연구

  • Kang, Jung-In (Dept of Environmental Sciences & Engineering, College of Engineering, Ewha Womans University) ;
  • Kim, Jae-Gu (Gangwon National University) ;
  • Lee, Sang-Don (Dept of Environmental Sciences & Engineering, College of Engineering, Ewha Womans University)
  • Received : 2011.08.26
  • Accepted : 2011.11.17
  • Published : 2011.12.31
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Abstract

This study examined the epiphytes using stable isotopes. Separated epiphytes should represent the water quality. In study areas, where agricultural paddies were prevailing, biomass of epiphytes can increase nitrogen isotopes(${\delta}^{15}N$) and as a result decrease in carbon isotopes(${\delta}^{13}C$). Naerin stream and Inbuk upper areas showed higher nitrogen isotopes(${\delta}^{15}N$) than in Hangye and Buk stream. Also, stable carbon isotopes(${\delta}^{13}C$) in Naerin stream and Inbuk streams tended to increase than in Hangye and Buk stream. This can indicate the epiphytes can be a good indicator for water quality pollution.

본 연구는 부식물 및 유기물로부터 분리 배양한 부착조류의 안정동위원소비 결과를 중심으로 분리된 부착조류의 안정동위원소비가 수질 대표성을 알아보기 위한 연구를 수행하였다. 주변 농경지의 분포가 많으며, 부착조류 현존량이 높아질수록, 부착조류의 질소안정동위원소비는 증가하며, 탄소안정동위원소비는 감소하는 경향을 보였다. 농경지 중심지역인 내린천 상류, 인북천 상류지역에서 질소안정동위원소비(${\delta}^{15}N$)가 임야 중심지역인 한계천 및 북천에서의 값보다 높았다. 탄소안정동위원소비(${\delta}^{13}C$)는 농경지에 의한 오염으로 부착조류의 현존량이 많은 내린천 상류와 인북천 상류지역보다 임야 중심의 청정한 한계천 및 북천으로 갈수록 높아지는 경향을 보였다. 이에 따라 부착조류의 안정동위원소비는 하천수질오염원 중요한 지표가 될 수 있음을 확인하였다.

Keywords

References

  1. 김규한. 2010. 동위원소 지구화학. 시그마프레스.
  2. 정준, 최재신, 이정호. 1992. 부착규조군집의 유기오탁지수(DAIpo)에 의한 금호강의 수질평가. 한국하천호수학회. 25(4):304-304.
  3. Adams, S. M.. 2002. Biological indicators of aquatic ecosystem stress. American Fisheries Society, Bethesda, Maryland.
  4. Brabandere, L. Frazer T. K. Montoya, J. P. 2007. Stable isotope ratios of macrophytes and associated periphyton along a nitrate gradient in two subtropical. Spring-fed streams. Freshwater Biology. 52:1564-1575 https://doi.org/10.1111/j.1365-2427.2007.01788.x
  5. Dodds, W. K. 2006. Eutrophication and trophic state in rivers and streams. Limnology and Oceanography. 51: 671-680. https://doi.org/10.4319/lo.2006.51.1_part_2.0671
  6. Elliott, E. M. Brush, G.S. 2006. Sedimented organic nitrogen isotopes in freshwater wetlands record long-term changes in watershed nitrogen source and land use. Environmental Science and Technology. 40(9):2910-2916. https://doi.org/10.1021/es051587q
  7. Godwin, C.M. Arthur, M.A., Carrick, H.J. 2009. Periphyton nutrient status in a temperate stream with mixed land-uses: implications for watershed nitrogen storage. Hydrobiologia. 623: 141-152. https://doi.org/10.1007/s10750-008-9654-z
  8. Griffiths H. 1998. Stable isotopes: Integration of biological, ecological and geochemical process. Oecologia 144:337-352
  9. Hebert, C. E. Wassenaar, L. I. 2001. Stable Nitrogen Isotopes in Waterfowl Feathers Reflect Agricultural Land Use in Western Canada. Environmental Science and Technology. 35: 3482-3487. https://doi.org/10.1021/es001970p
  10. Leland, H. V. Porter, S. D. 2000. Distribution of benthic algae in the upper Illinois River basin in relation to geology and land use. Freshwater Biology. 44:279-301. https://doi.org/10.1046/j.1365-2427.2000.00536.x
  11. Minagawa, M,, Wada, E. 1984. Stepwise enrichment of $^{15}N$ along food chain : further evidence and the relation between $^{15}N$ and animal age. Geochimica et Cosmochimica Acta. 48: 1135-1140. https://doi.org/10.1016/0016-7037(84)90204-7
  12. Peterson. B. J. 1999. Stable isotopes as tracers of organic matter input and transfer in benthic food webs: A review. Acta Oecologica 20(4): 479-487. https://doi.org/10.1016/S1146-609X(99)00120-4
  13. Riera, P. Escaravage, C. Leroux, C. 2009. Trophic ecology of the rocky shore community associated with the Ascophyllum nodosum zone (Roscoff, France): $\delta^{13}C$ vs $\delta^{15}N$ investigation. Estuarine, Coastal and Shelf Science. 24:390-451.
  14. Watanabe, T. Asai, K. 1999. Statistic classification of epilithic diatom species into three ecological groups relating to organic water Pollution (2) Saprophilous and saproxenous taxa. Diatom. 10:35-47.