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ISSN : 1225-0171(Print)
ISSN : 2287-545X(Online)
Korean Journal of Applied Entomology Vol.63 No.2 pp.89-100
DOI : https://doi.org/10.5656/KSAE.2024.03.0.010

Patterns of Butterfly Species Richness According to Altitude on Jeju Island

Myung Eun Chwa, Dong-Soon Kim
Major of Plant Resources Science and Environment, College of Agriculture & Life Sciences, SARI, Jeju National University, Jeju 63243, Korea

Abstract

This study was conducted to confirm the characteristics of butterfly species richness on Jeju Island at 23 locations spanning from the coast to the highlands of Mt. Hallasan and to ascertain their distribution patterns. The number of species observed at different altitudes displayed a high peak pattern, with the highest concentrations observed at mid-low altitudes. The altitude associated with the maximum number of species was estimated to be approximately 480 m. Using the average habitat altitude (median value) to differentiate between high-altitude (> 610 m) and low-altitude (< 347 m) species, we observed a tendency for species distributed at higher altitudes to have larger distribution ranges, although this trend was not statistically significant. However, when eight unique species distributed in only the alpine areas were excluded from the high-altitude distribution, the habitat range of the high-altitude species increased to 973 m, which was significantly wider than that of the low-altitude species. Overall, these results were consistent with Rapoport’s hypothesis that the distribution range of higher-altitude species is larger than that of lower-altitude species. In addition, the distribution of butterflies on Mt. Hallasan was characterized by the formation of an isolated community in the upper part because of the influence of approximately 10 species with narrow vertical distribution ranges limited to subalpine grasslands above 1,500 m. These characteristics contributed to a slight increase in species count at higher elevations. The number of species observed according to altitude potentially resulted in a bimodal pattern, including a peak in the number of species at mid-low elevations. This study offers a novel perspective on the distribution of butterfly species along the altitude gradient of Mt. Hallasan and is anticipated to aid future research on butterfly distribution patterns on Jeju Island as well as in the formulation of strategies for butterfly diversity conservation due to climate change concerns.

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Vol. 40 No. 4 (2022.12)

Journal Abbreviation Korean J. Appl. Entomol.
Frequency Quarterly
Doi Prefix 10.5656/KSAE
Year of Launching 1962
Publisher Korean Society of Applied Entomology
Indexed/Tracked/Covered By