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지리정보시스템을 이용한 한국산 참개구리와 금개구리의 생태적 지위와 종간 경쟁에 대한 연구 KCI 등재
Ecological Niche and Interspecific Competition of Two Frog Species (Pelophylax nigromaculatus and P. chosenicus) in South Korea using the Geographic Information System.
pp.363-373
An ecological niche is defined as the specific role of a species influenced by time, space, and other resources. By investigating overlaps between ecological niches of different species, we could estimate the degrees of interspecific competition. Such studies often use geographic information systems (GIS) to discover niche overlaps between species. In this study, we used GIS to estimate the spatial niches of two Korean frog species (Pelophylax nigromaculatus and P. chosenicus). This enabled us to predict their geographic distributions in order to identify their coexistence regions and distribution patterns. The results confirmed that altitude was an important variable for predicting their distribution, with a correlation with their climatic range. Spatial distributions of the two frog species were highly overlapped, as the distribution range for P. nigromaculatus included most of the range of P. chosenicus, showing a sympatric distribution pattern. Within the coexisting regions, however, the presence sites for the two species did not overlap, implying weak competition. To confirm the principal factors influencing their competitive relationship and reasons for their sympatric distribution pattern, we need more detailed in-depth studies on the diverse environmental variables within the regions where the two species coexist. By doing so, we would be able to identify various mechanisms for avoiding competition in sympatric frog species.
재료 및 방 법
1. 연구 지역
2. 종 분포 자료
3. 지리적 환경 분석
4. 생태적 지위 중첩
5. 종 분포 모델링
결 과
1. 종 분포 현황
2. 고도와 서식지에 따른 분포 패턴
3. 기후변수 간의 상관관계
4. 생태적 지위 중첩
5. 종 분포 모델링
고 찰
적 요
