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Population Viability Analysis of a Gold-spotted Pond Frog (Rana chosenica) Population: Implications for Effective Conservation and Re-introduction  

Cheong, Seok-Wan (Korean Ministry of Environment)
Sung, Ha-Cheol (Department of Biology Education, Korea National University of Education)
Park, Dae-Sik (Department of Science Education, Kangwon National University)
Park, Shi-Ryong (Department of Biology Education, Korea National University of Education)
Publication Information
Korean Journal of Environmental Biology / v.27, no.1, 2009 , pp. 73-81 More about this Journal
Abstract
Population viability analysis of a Gold-spotted pond frog (Rana chosenica) population at Cheongwon-gun, Chungbuk, in South Korea was conducted and we proposed several suggestions for effective conservation and re-introduction of the species. Simulating a developed model over 1,000 times predicted that the population will exist over 30 years with a relatively low growth rate of 0.113, but with a high probability of extinction as 81.1%. Population growth and extinction probability were the most greatly depended on the rate of successful metamorphosis. In the case of outbreak of amphibian diseases such as Chytridiomycosis and Ranavirus, the population will be easily extinct within 4 years with 100% probability. In a habitat of which carrying capacity is 200, to successfully re-introduce an extinct population, it is initially needed to put 100 individuals of which 83% is males and its age structure is normal-distributed. If we additionally conducts artificial supplementation of 10% individuals every 2 years from 4 years to 10 years after initial reintroduction, the population will become a stable with 0.297 growth rate and 0.290 extinction rate. Our results are the first case of amphibian population viability analysis in Korea and could be used to develop effective conservation and re-introduction plans for endangered Gold-spotted pond frog.
Keywords
Rana chosenica; PVA (Population Viability Analysis); re-introduction;
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