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KMID : 0613820190290070762
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Journal of Life Science
2019 Volume.29 No. 7 p.762 ~ p.768
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Spatial Distribution Patterns and Population Structure of Doellingeria scabra at Mt. Maebong in Korea
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Lee Byeong-Ryong
Huh Man-Kyu
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Abstract
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Doellingeria scabra Thunb. (syn. Aster scaber Thunb.), a perennial herb in the family Asteraceae, is frequently found in the wild mountain regions of Korea. This aim of this work was to measure the characteristics of patchiness of D. scabra in a local population on Mt. Maebong in Taeback-ci, Gangwon-do. The spatial distribution pattern of this species was estimated by analyzing ecological data by methods including the index of dispersion, Lloyd’s mean crowding, and Morisita’s index. The mean population density of the D. scabra population was 2.94. The D. scabra individuals were uniformly or randomly distributed in small-scale plots and were aggregately distributed in two large-scale plots (16×32 m2 and 32×32 m2). The mean crowding (M*) was 0.916. The mean patchiness index (PAI) was 0.796. Morisita’s coefficient tended to decrease the density of the population as the plot size increased. The expected value of Eberhardt’s index (IE) in the local population was 2.623. Moran's I of D. scabra significantly differed from the expected value in 6 of 8 cases (75.0%). The first five classes were positive, with four showing statistical significance, indicating similarity among individuals in the first four distance classes (I?IV, 8 m), The results presented here could provide a theoretical basis for the conservation of D. scabra (Korean: chamchwi) and for the rehabilitation and sustainable management of forest ecosystems on Mt. Maebong, as well as on other mountains.
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KEYWORD
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Doellingeria scabra, mean crowding, Mt. Maebong, patchiness index, spatial distribution
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