Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Seasonal Variation Characteristics of Zostera marina L. in HAENAM SAGUMI on the Southern Coast of Korea

해남 사구미 연안 거머리말(Zostera marina L.)의 계절특성

  • Ok, Jae Seung (Department of Earth and Marine Sciences, Hanyang University) ;
  • Lee, Sang Yong (National Fisheries Research & Development Institute) ;
  • Shin, Kyung Hoon (Department of Earth and Marine Sciences, Hanyang University) ;
  • Kim, Hi Joong (Department of Earth and Marine Sciences, Hanyang University)
  • 옥재승 (한양대학교 해양환경과학과) ;
  • 이상용 (국립수산과학원 해조류바이오연구센터) ;
  • 신경훈 (한양대학교 해양환경과학과) ;
  • 김희중 (한양대학교 해양환경과학과)
  • Received : 2013.10.25
  • Accepted : 2013.12.09
  • Published : 2013.12.31
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Abstract

This ecological study was conducted to analyze seasonal variation characteristics of Zostera marina at HAENAM SAGUMI on the Southern Coast of Korea. Environmental characteristics, plant morphological characteristics, shoot density, biomass, and leaf production were monitored from August 2008 to March 2011. Zostera marina occurred in the subtidal zone from 0 to 2.5 m below the mean low water level. Water temperature showed a clear annual pattern, with increase in spring and summer, and decreases in fall and winter. Irradiance showed seasonal variation, even though daily weather condition has short-term variation in the incident irradiation. Plant morphological characteristics, shoot density, biomass, and leaf production showed clear seasonal variation. Seasonal variation in the above biomass of Zostera marina was mainly caused by changes in shoot length. We found that there are correlations between environmental characteristics (water temperature, irradiation) and the growth of Zostera marina. There is stronger correlation between water temperature and the growth of Zostera marina, compared to the correlation between irradiation and the growth of Zostera marina. In particular, the growth of Zostera marina is inhibited by both higher and lower water temperature.

한국에 자생하는 거머리말속(Zostera, Zosteraceae) 거머리말(Zostera marina L.)의 시간적인 변동에 따른 형태 및 생태학적 특성을 파악하기 위하여 생육 환경, 형태학적 특징, 생육 밀도, 생물량, 잎의 성장을 비교 분석하였다. 거머리말 생장특성들은 수온과 기온의 변화에 영향을 크게 받는 것으로 나타났다. 수온의 증가에 따라 생장이 증가하지만 여름의 높은 수온은 생장을 저해하는 요소로 작용하였다. 거머리말은 높은 수온에 민감한 반응을 보였으며, 매우 낮은 수온도 생장을 저해하는 요소로 작용한 것으로 나타났다. 거머리말 서식지에 투입되는 수중광량은 조석의 변화에 따라 계절적인 차이가 있는 것으로 분석되었다. 해남 사구미 연안 거머리말 서식지의 광량은 낮은 값으로 생존에 지장은 없으나 계절변화에 따라 거머리말 생산성에 제한요소로 작용한 것으로 판단된다. 결론적으로 거머리말은 수온, 광량 등 환경변화의 영향으로 뚜렷하게 시간적인 변동이 나타났으며, 특히 고수온과 저수온에 의해 생장이 크게 저하되는 것으로 나타났다.

Keywords

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