[논문]습지 전문종인 제비동자꽃(Lychnis wilfordii (Regel) Maxim.) 개체군의 내적동태

채현희; 김영철; 곽명해; 남기흠

doi:10.13047/kjee.2021.35.3.237

습지 전문종인 제비동자꽃(Lychnis wilfordii (Regel) Maxim.) 개체군의 내적동태
Internal Dynamics of Wetland Specialist, Population of Lychnis wilfordii (Regel) Maxim. 원문보기

한국환경생태학회지 = Korean journal of environment and ecology, v.35 no.3, 2021년, pp.237 - 255

채현희 (강릉원주대학교 생물학과) , 김영철 (강릉원주대학교 자연과학연구소) , 곽명해 (국립생물자원관 식물자원과) , 남기흠 (국립생물자원관 식물자원과)

초록
AI-Helper

제비동자꽃(Lychnis wilfordii (Regel) Maxim.)은 주로 고위도의 이탄습지에 분포하는 전문종이다. 우리나라에서는 2개 지역에 고립되어 분포한다. 본 연구에서는 생육지 특성, 생장특성 및 자가화합성 그리고 안정적인 개체군을 유지하고 있는 용늪습지보호지역에서 개체군의 지속에 관여하는 내적 동태를 평가하였다. 분포지의 식생환경은 용늪습지보호지역과 평창군 대관령면 분포지 사이에 뚜렷한 차이가 있었다. 화분매개충의 방문에 의해 종자의 생산이 촉진되기는 하지만 자가화합성을 함께 소유하였다. 토양의 유기물함량이 높은 조건에서 다수의 겨울눈을 생성하였고, 줄기 수, 열매 수가 최대에 달하였다. 그렇지만 유기물함량이 낮은 조건에서도 생장하고 개화하여 종자를 생산하였다. 용늪습지보호지역에서 제비동자꽃은 고층습원에는 분포하지 않았고 뚝사초가 형성하는 사초기둥이 발달한 저층습원에 분포하였다. 제비동자꽃은 이 공간에서도 사초기둥의 상단부에 주로 분포하였다. 따라서 뚝사초가 형성하는 사초기둥의 생성, 성장 및 소멸은 이 공간에 분포하는 식물의 정착, 성장, 소멸과 밀접한 연관이 있는 것으로 판단되었다. 현재 용늪습지보호지역은 제비동자꽃이 분포하는 사초기둥이 발달한 공간이 넓게 분포하고 있고 소멸과 재정착의 과정이 잘 이루어지는 것으로 평가되었다. 그러므로 현재와 같은 생태적 과정이 잘 유지된다면 용늪습지보호지역의 제비동자꽃 개체군은 오랜 기간에 걸쳐 지속 가능할 것으로 예상되었다.

Abstract ▼ AI-Helper

Lychnis wilfordii (Regel) Maxim. is one of the wetland specialists mainly distributed in peatlands at high latitudes. In Korea, it is isolated in two regions. This study investigated habitats, growth traits, and self-compatibility of L. wilfordii and assessed the internal dynamics of its population persistence. Its population has remained stable in the Yongneup Wetland Protected Area (YWPA). There was a clear difference in vegetation environment between YWPA and the distribution area in Daegwallyeong (DWL), Pyeongchang-gun. It has self-compatibility while pollinators facilitate its seed production. It produces a large number of hibernacles and bears the maximum number of branches and fruits in soil with rich organic contents. However, it grows and bears fruits even under the condition of low organic contents. In YWPA, L. wilfordii is not distributed in high moor but widely distributed in low moor where tussocks by Carex thunbergii var. appendiculata are developed. It is mainly distributed on the top of tussocks also. Therefore, it is judged that the formation, growth, and extinction of tussocks by C. thunbergii var. appendiculata is closely related to the establishment, growth, and extinction of plants distributed in this space. It is assessed that the current YWPA has well-developed tussocks in which L. wilfordii is widely distributed, and extinction and re-establishment progress well. Accordingly, the L. wilfordii population is expected to be sustainable in the long term given if its current ecological process is maintained well.

주제어

표/그림 (14)

그림 Figure 1. Photographs of L. wilfordii observed in the YWPA, A: Adult, B: Flowers, C: Capsules, D: Seeds (cultivated in the Korea Botanic Garden), E: Seedling, F: Growing seedling, G: Flowered individual that germinated same year.
그림 Figure 2. Distribution map of L. wilfordii in Korea (A: Inje, YWPA, B: Pyeongchang, DWL).
표 Table 1. The list of observed habitats and selected populations
그림 Figure 3. Study sites in the YWPA (Keun-yongneup).
표 Table 2. Vegetation table of the selected populations
표 Table 2. (Continued)
그림 Figure 4. Detrended correspondence analysis with vegetation data(1 m²) collected from Keun-yongneup and selected sites occupied with L. wilfordii(A: Southwest of Keun-yongneup; B: Middle area of Keun-yongneup; C: Northeast of Keun-yongneup; black triangle: unoccupied by L. wilfordii; grey dot: occupied by L. wilfordii; solid line circle: high moor; dotted line grey circle: low moor(potentially able to occupied by L. wilfordii after natural disturbances); dotted line white circle: low moor(occupied by L. wilfordii).
표 Table 3. Diversity index of high moor and low moor in Keun-yongneup
표 Table 4. Average height, width, and spacing of tussock occupied and unoccupied with L. wilfordii
그림 Figure 5. Comparison of performance variables measured under four soil conditions(A: Germination rates from different sowing dates(Solid line: January 9; Dotted line: April 5), B: Total number of buds per individual, 2018; C: Mean shoot height per individual, 2017; D: Total number of capsules per individual, 2017; E: Mean shoot height per individual, 2018; F: Total number of capsules per individual, 2018). * P < 0.05, ** P < 0.01, *** P < 0.001
표 Table 5. Pollination treatments of seed sets (Number of seeds per capsule/100 seed weight) of L. wilfordii in the green house
그림 Figure 6. Distribution characteristics of L. wilfordii in the YWPA (red bar = distributed area).
그림 Figure 7. The population size and distance between the populations of L. wilfordii in Korea: A, Inje, YWPA; B, Pyeongchang, DWL.
그림 Figure 8. Cyclic microsuccession of tussock in the YWPA with L. wilfordii occupation: A & B, initial growth; C & D, middle growth; E, maximum growth; F & G: natural collapse(heavy wild boar disturbance in the upper and lower part of tussock). Without L. wilfordii occupation: H & I, initial growth; J & K, middle growth; L, maximum growth; M & N, natural collapse (heavy wild boar disturbance in the upper and lower part of tussock).

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