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http://dx.doi.org/10.17663/JWR.2016.18.2.113

Habitat Fragmentation by a Levee and Its Impact on Frog Population in the Civilian Control Zone  

Ju, Jaehyoung (DMZ Ecology Research Institute)
Kim, Jae Hyun (DMZ Ecology Research Institute)
Kim, Seung Ho (DMZ Ecology Research Institute)
Publication Information
Journal of Wetlands Research / v.18, no.2, 2016 , pp. 113-120 More about this Journal
Abstract
We examined whether an artificial levee constructed on prime amphibian habitat influences fragmentation. Four different sites on both sides of a levee in the Civilian Control Zone(CCZ) were probed. Sites 1 and 2 are rice paddies on one side of the levee, and Site 3 is the stream that locates in the same side. All the three sites have water conditions of seasonal variance. On the other side, Site 4 consists of rice paddies with a stable condition of water supply, irrigated through a canal. The research sites were frequented and the frog populations were closely monitored. The investigation identified five species. Pelophylax nigromaculatus was the most frequent (n=295), followed by Hyla japonica (n=220) and Glandirana rugosa (n=124). Three Bufo gargarizans and eight Rana coreana were also found. The amphibians, however, were found to relocate themselves according to water condition to rice paddies or stream only within one side of the levee. Despite having ample sources of water and foods, Site 4 lacked large populations of frogs, even when droughts came. Both the species dominance index and the richness index indicated a more favorable living condition of the one side of the levee (Sites 1 and 2) over the other.
Keywords
amphibians; Civilian Control Zone; levee; habitat fragmentation;
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