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ISSN : 2287-8327

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Vol.43 No.3
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Influence of plant on distribution of an endangered butterfly, Leptalina unicolor (Bremer & Grey, 1853), in restored riverside areas along the Geum River

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2019, v.43 no.3, pp.314-319
https://doi.org/10.1186/s41610-019-0129-0

Seong-Ki KIM (National Institute of Ecology)
(Butterfly Village Agricultural Corporation Company, Ltd)
Ju-A Jeon (Butterfly Village Agricultural Cooperation)


Seong-Ki, K. , Ju-A, J. , & (2019). Influence of plant on distribution of an endangered butterfly, Leptalina unicolor (Bremer & Grey, 1853), in restored riverside areas along the Geum River. Journal of Ecology and Environment, 43(3), 314-319, https://doi.org/10.1186/s41610-019-0129-0
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Abstract

Background: The dramatic worldwide decline in the butterfly species Leptalina unicolor (Bremer & Grey) is largely the result of continuous habitat decline and disturbance by humans. The discovery of a narrow habitat in riverside wetlands utilized by L. unicolor raises the hope that such restricted key areas could be rather easily protected. Results: Here, we explain the environmental variables and habitat characteristics that primarily influence the distribution of L. unicolor discovered at the riverside areas along the Geum River. L. unicolor larvae were found at 9 of 13 study sites, and their abundance was strongly positively correlated with plant biomass. Our investigation showed that among four plant species (Miscanthus sinensis, Spodiopogon cotulifer, Setaria viridis, and Imperata cylindrica), L. unicolor larvae were the most abundant on the leaves of M. sinensis. They were not abundant on the leaves of S. cotulifer, S. viridis, or I. cylindrica. Interestingly, the number of L. unicolor larvae was positively correlated with the coverage area (m2) of M. sinensis (F = 41.7, r2 = 0.74, P < 0.0001). Conclusions: It appears that water (e.g., wetlands, ponds, and watersides) located along the riverside areas along the Geum River is important for the constant maintenance and conservation of L. unicolor. This is based on the habitat characteristics (water preference) of M. sinensis, which is used as a habitat by L. unicolor larvae. However, the waterside is dry and terrestrialization is in progress owing to the decreased water levels and water supply caused by an opened weir. Hereafter, this area will likely require management to secure a stable habitat for L. unicolor.

keywords
Wetland, Miscanthus sinensis, Habitat, Food source, Restoration, Four Rivers Project

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