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Spatiotemporal distributions of the endangered treefrog, Hyla suweonensis, in relation to sympatric H. japonica : Calling activity and habitat characteristics
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- 발행기관
- 한국양서ㆍ파충류학회 바로가기
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- 간행물
- 한국양서ㆍ파충류학회 학술대회 바로가기
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- 통권
- 제6회 한국양서파충류학회 정기총회 및 학술발표대회 (2013.07)바로가기
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- 페이지
- pp.21-22
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- 저자
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- 언어
- 영어(ENG)
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- URL
- https://www.earticle.net/Article/A202635
원문정보
초록
- 영어
- Although amphibians are declining worldwide and there is valid focus on determining the causes, critical basic information is missing for many species, such as geographic distribution and rate of population decline. In Korea, there are two closely related treefrog species: H. japonica, which is distributed widely throughout the country, and H. suweonensis, which occurs sympatrically in a narrow strip of western coastal plains. H. suweonensis is only found within the distribution of H. japonica. Males of both species call to advertise for mates, and the calls are distinguishable. To determine the spatiotemporal distributions of H. suweonensis and H. japonica, we conducted a calling survey in 70 localities encompassing the distributional range of H. suweonensis. A group of volunteers conducted the survey, supplemented with recording calls for validation. Calling activity was scored using the calling index (CI), which ranged from 0 to 3, with 0 indicating no calling and 3 indicating full chorus. The endangered H. suweonensis was found only in 14 out of 70 localities, designated as syntopic, whereas H. japonica occurred in all 70 localities. The calling activity of H. japonica was vigorous, with 56.1% of all surveys registering CI of 3 throughout the study period, but the calling activity of H. suweonensis was faint, with only 13.4 % of all surveys registering CI of 1 or higher. Geographic information system analysis revealed that syntopic localities had significantly less urban and forested areas and significantly more rice paddy area than the non-syntopic localities. Binary logistic regression confirmed that three habitat factors had negative effects on the occurrence of H. suweonensis: the percentages of urban, agricultural field, and forested areas. The spatiotemporal distributions of the two treefrog species throughout the breeding season confirmed that H. suweonensis indeed rare and may be undergoing an extinction vortex. For the conservation of H. suweonensis, swift and decisive measures should be taken, including determining the causes of population decline and establishing protected habitat areas.
저자
간행물 정보
발행기관
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- 발행기관명
- 한국양서ㆍ파충류학회 [The Korean Research Society of Herpetologists]
- 설립연도
- 2008
- 분야
- 자연과학>기타자연과학
- 소개
- 본 학회는 우리나라에 서식하는 양서․파충류에 관한 연구 및 연구 결과를 논의하고, 이를 통하여 한국 내 양서․파충류의 효율적인 보전에 관한 대책 등을 제시하여, 한국의 자연환경 보전에 기여하고자 한다.
간행물
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- 간행물명
- 한국양서ㆍ파충류학회 학술대회
- 간기
- 연간
- 수록기간
- 2009~2024
- 십진분류
- KDC 497 DDC 590
이 권호 내 다른 논문 / 한국양서ㆍ파충류학회 학술대회 제6회 한국양서파충류학회 정기총회 및 학술발표대회
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