The Korean Journal of Ecology
- Volume 13 Issue 3
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- Pages.215-224
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- 1990
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- 1225-0317(pISSN)
A Study of Nitrogen Metabolism in Lemnaceae -Limiting Factors of Distribution of Spirodela Polyrhiza and Lemna aequinoctialis-
개구리밥과 식물의 질소대사에 관한 연구
- Chang, Nam-Kee (Dept. of Biology, College of Education, Seoul National Univ) ;
- Oh, In-Hye (Dept. of Biology, Pai-Chai Univ) ;
- Kim, Heui-Baik (Dept. of Biology, College of Education, Won-Kwang Univ) ;
- Yoo, Hae-Mee (Dept. of Biology, College of Education, Won-Kwang Univ) ;
- Eo, Eun-Joo
- Published : 1990.06.01
Abstract
The distribution of Spirodela polyrhiza and Lemna aequinoctialis was investigated and the limiting factors on the distribution were analyzed. At 66 sites in Korea, the presense or absense of duckweed were recorded and the water was sampled. The temperature, hardness, pH and contents of N, , , Na, K, Ca, Cu, Mg, Zn, Fe, Ni, Mn and Cd of water sampled were analyzed. The results were as follows; It seemed that the limiting factors influencing on the distribution was water temperature and concentration of . The critical temperature of the distribution of Spirodela and Lemna was presented 19.5
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