Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Ecologcal Response of the endangered aquatic plant, Viola raddeana Regal, to Effect of Increased CO2 Concentration and Air Temperature

CO2농도와 온도증가에 따른 멸종위기수생식물 선제비꽃의 생태학적 반응

  • Received : 2013.05.06
  • Accepted : 2013.06.18
  • Published : 2013.08.31
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Abstract

The increased $CO_2$ concentration and temperature affect ecological responses of plants. In order to know the effects of global warming on the Viola raddeana Regal, endangered aquatic plant designated by the Ministry of Environment Korea, this study was investigated at control and treatment(increased $CO_2$ concentration + increased temperature) in glasshouse. Then, autecological responses of V. raddeana were monitored and measured. As a result, shoot length, number of fruits per plant, number of branch per plant, number of seeds per fruit, number of fruits per branch, and weight of 10 seeds were higher in control than in treatment. number of leaves per branch was higher in treatment than in control. Length of axis, length of branch and number of leaves per plant were not different between in the control and in the treatment. These results demonstrated that the reproductive response of V. raddeana might be negatively influenced by increased $CO_2$ concentration and temperature. The global warming will be one of the main causes of extinction for V. raddeana Regal.

멸종위기수생식물 선제비꽃이 증가된 $CO_2$농도와 온도에 생태적으로 어떻게 반응하는지 알아보기 위하여 연구를 실시하였다. 실험은 2007년부터 2012년까지 야외조건인 대조구와 $CO_2$농도 + 온도를 증가시킨 처리구에서 개체생태학적으로 생육반응을 모니터링하였다. 그 결과 지상부 길이, 개체 당 가지 수, 개체 당 열매 수, 열매 당 종자 수, 가지 당 열매 수와 종자무게는 처리구에서 대조구보다 낮았으나, 가지 당 잎 수는 많았고, 꽃대길이, 가지 길이와 개체 당 잎 수는 차이가 없었다. 이러한 결과 $CO_2$농도와 온도가 증가하면 선제비꽃의 가지 수는 줄어들지만 가지에 붙은 잎 수를 늘리는 반응을 하며, 종자생산이 감소하여 번식에 부정적임을 의미한다. 그래서 지구온난화현상은 멸종위기의 주요한 원인 중 하나가 될 것으로 판단된다.

Keywords

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