In the Sumeunmulbaengdui Wetland Protected Area of Jeju Island, there exists a unique pond, a so-called ‘Ohmi’, which is likely to be an oasis supporting the wildlife and escaped-livestock. We exquisitely described the diversity and distribution of plant community of the Ohmi. Despite its small area, six syntaxa were identified: Sphagnum community of peat bog type, Nymphoides coreana community of the floating-leaf limnetic vegetation, Scirpus triangulatus community and Schoenoplectus hotarui community of the littoral zone vegetation, and Deinostema violacea-Eleocharis congesta community and Eriocaulon atrum-miquelianum community of the ephemeral vegetation. A zonal distribution of plant communities along the water depth was recognized. The Sphagnum islets regarded as a typical component of peat bog, in Korea were first described at the center of the Ohmi. We conclude that the Ohmi is a primeval keystone habitat of the Sumeunmulbaengdui intermediate moor with a less oligotrophic ombrotrophic environment.

Abstract
 서 론
 재료 및 방 법
 결 과
  1. 물이끼섬 보그식생
  2. 원수대 부엽식생
  3. 연안대 정수식생
  4. 연안대 순간식생
 고 찰
  1. 오미 식물상과 식생의 분포 특이성
  2. 물이끼섬 (이탄소도)의 생태성
 적 요
 References

• 김종원(계명대학교 생명과학과) | Kim Jong-Won (School of Biological Sciences, Keimyung University)
• 이경연(계명대학교 대학원 생물학과) | Gyeong-Yeon Lee (Department of Biology, Graduate School, Keimyung University) Corresponding author
• 김윤하(계명대학교 대학원 생물학과) | Yun-Ha Kim (Department of Biology, Graduate School, Keimyung University)
• 엄병철(계명대학교 대학원 생물학과) | Byeong- Cheol Eom (Department of Biology, Graduate School, Keimyung University)