In order to obtain scientific information for the conservation of Utricularia japonica Makino, rare plant species, we investigated life history, phenology, growth and distribution in the east coastal region of Korea. Seven habitats of U. japonica were confirmed in this study. Turion of U. japonica rests overwinter at the bottom and ripens at the water surface and then usually germinate and sprout when the water warms in spring. A single shoot grown from turion divided into several shoots. Shoot decomposition started in October and formed a new turion at the end of the decomposed shoot. Flowering period was from early July to late October. Percentage of flowering ramets was significantly low as 6.3%. U. japonica showed the fastest growth rate from April to July, the maximum growth in August and the highest biomass in October. U. japonica tended to be concentrated in larger ramets in the water depth of 50 cm~150 cm in Cheonjin lake. The main factors affecting the growth of U. japonica were water temperature and turbidity. The establishment and growth of U. japonica in Cheonjin lake were determined by responses to water temperature with seasonal change and to light conditions caused by the different plants. These conditions affect the temporal and spatial distribution of U. japonica and population change. The findings of this study would be helpful to provide the basic information needed for the conservation and restoration of U. japonica.

서 론
 연구 방 법
  1. 조사지 개황
  2. 영구방형구의 설치
  3. 조사 시기
  4. 수 환경 요인
  5. 통발의 형태, 생활사 및 생장 특성
  6. 천진호의 통발 개체군의 크기 추정
  7. 통발 군집 조사
  8. 자료 처리와 통계 분석
 결 과
  1. 통발의 분포
  2. 통발의 생장 특성
  3. 통발의 식물계절학
  4. 천진호의 통발 개체군 크기
  5. 계절에 따른 통발의 생장
  6. 통발의 생장에 영향을 미치는 수 환경요인
  7. 통발 개체군의 공간분포를 결정하는 요인
 논 의
  1. 통발의 분포
  2. 통발의 생장 특성
  3. 통발 개체군의 공간분포
  4. 천진호에서 통발 개체군의 보전과 관리를 위한 고찰
 적 요
 references

• 정연인(강릉원주대학교 자연과학대학 생물학과) | Jeong Yeon-In
• 홍보람(강릉원주대학교 자연과학대학 생물학과) | Bo-Ram Hong
• 김영철(강릉원주대학교 자연과학대학 생물학과) | Young-Chul Kim
• 이규송(강릉원주대학교 자연과학대학 생물학과) | Kyu-Song Lee Corresponding author