한국해양환경ㆍ에너지학회지 (Journal of the Korean Society for Marine Environment & Energy)

  • 제14권2호
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  • Pages.130-137
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  • 2011
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  • 2288-0089(pISSN)
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  • 2288-081X(eISSN)
한국해양환경•에너지학회 (The Korean Society for Marine Environment and Energy)
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식물환경복원을 위한 저서미세조류의 성장에 미치는 수온과 염분의 영향

Effects of Temperature and Salinity on the Growth of Marine Benthic Microalgae for Phytoremediation

  • 투고 : 2011.04.07
  • 심사 : 2011.05.17
  • 발행 : 2011.05.25
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초록

부영양화가 진행된 연안역의 퇴적환경개선을 목적으로, 수정만으로 부터 분리한 저서미세조류 Achnanthes sp., Amphora sp., Navicula sp.와 Nitzschia sp.의 성장에 미치는 수온과 염분의 영향을 정치배양으로 살펴보았다. 최대 성장속도는 Achnanthes sp.의 경우 $25^{\circ}C$와 25 psu(0.60 /day), Amphora sp.에서 $15^{\circ}C$와 25 psu(0.56 /day), Navicula sp.에서 $20^{\circ}C$와 30 psu(0.53 /day) 그리고 Nitzschia sp.에서 $20^{\circ}C$와 25 psu(0.48 /day)로 나타났다. 그리고 4종의 최적성장(최대성장 속도의 70% 이내)로부터, Amphora sp., Navicula sp.와 Nitzschia sp.는 광온성 및 광염성종으로 나타났으며, Achnanthes sp.는 낮은 수온영역에서 성장하기 어려운 협온성 종으로 특징지을 수 있었다. 따라서 Amphora sp., Navicula sp.와 Nitzschia sp.는 부영양화나 빈산소수괴 문제와 같이 오염된 연안역의 개선을 위한 식물환경복원용으로 유용한 미세조류일 것으로 판단된다.

To improve sediment quality in eutrophic coastal areas using benthic microalgae, we examined the effects of temperature and salinity on the growth of benthic microalgae Achnanthes sp., Amphora sp., Navicula sp. and Nitzschia sp. isolated from Sujeong Bay, Korea, using batch cultures. The maximum growth rates were obtained under the combined temperature and salinity conditions of $25^{\circ}C$ and 25 psu for Achnanthes sp. (0.60 /day), $15^{\circ}C$ and 25 psu for Amphora sp. (0.56 /day), $20^{\circ}C$ and 30 psu for Navicula sp. (0.53 /day), $20^{\circ}C$ and 25 psu for Nitzschia sp. (0.48 /day). Considering these results of temperature and salinity conditions required for optimum growth (${\geq}$ 70% of maximum specific growth rate), Amphora sp. Navicula sp. and Nitzschia sp. were characterized as eurythermal and euryhaline species, while Achnanthes sp., which exhibited extremely low survival at low temperature. In conclusion, Amphora sp., Navicula sp. and Nitzschia sp. may be useful species for phytoremediation, to control eutrophication and hypoxic water and thus improve environmental conditions of polluted coastal areas.

키워드

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피인용 문헌

  1. Effect of light quality on the growth and proximal composition of Amphora sp. vol.29, pp.3, 2017, https://doi.org/10.1007/s10811-016-1029-7