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http://dx.doi.org/10.13047/KJEE.2019.33.3.303

Distributional Characteristics and Evaluation of the Population Sustainability, Factors Related to Vulnerability for a Polygonatum stenophyllum Maxim.  

Kim, Young-Chul (Research Center for Natural Science, Gangneung-Wonju National University)
Chae, Hyun-Hee (Department of Biology, Gangneung-Wonju National University)
Ahn, Won-Gyeong (Department of Biology, Gangneung-Wonju National University)
Lee, Kyu-Song (Department of Biology, Gangneung-Wonju National University)
Nam, Gi-Heum (Plants Resource Division, Biological Resources Research Department, National Institute of Biological Resource)
Kwak, Myoung-Hai (Plants Resource Division, Biological Resources Research Department, National Institute of Biological Resource)
Publication Information
Korean Journal of Environment and Ecology / v.33, no.3, 2019 , pp. 303-320 More about this Journal
Abstract
Plants interact with various biotic and abiotic environmental factors. It requires much information to understand the traits of a plant species. A shortage of information would restrict the assessment, especially in the evaluation of what kind of factors influence a plant species to face extinction. Polygonatum stenophyllum Maxim. is one of the northern plants of which Korea is the southern distribution edge. The Korean Ministry of Environment had designated it to be the endangered species until December 2015. Although it is comparatively widespread, and a large population has recently been reported, it is assessed to be vulnerable due to the low population genetic diversity. This study evaluated the current distribution of Polygonatum stenophyllum Maxim. We investigated the vegetational environment, population structures, phenology, soil environment, and self-incompatibility based on the results. Lastly, we evaluated the current threats observed in the habitats. The habitats tended to be located in the areas where the masses at the edge of the stream accumulated except for those that were located on slopes of some mountainous areas. Most of them showed a stable population structure and had re-established or recruited seedlings. Polygonatum stenophyllum Maxim. had the difference in time when the shoots appeared above the ground depending on the depth of the rhizome located in the underground. In particular, the seedlings and juveniles had their rhizome located shallow in the soil. Visits by pollinator insects and success in pollination were crucial factors for bearing of fruits by Polygonatum stenophyllum Maxim. The threats observed in the habitat of Polygonatum stenophyllum Maxim. included the expansion of cultivated land, construction of new buildings, and construction of river banks and roads. Despite such observed risk factors, it is not likely that there would be rapid population reduction or extinction because of its widespread distribution with the total population of more than 2.7 million individuals and the new populations established by the re-colonization.
Keywords
CONSERVATION; REPRODUCTION TRAITS; POPULATION STRUCTURE; PHENOLOGY;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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