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Vascular plant diversity of the Gogunsan Archipelago in the Korean Peninsula

Journal of Species Research / Journal of Species Research, (E)2713-8615
2019, v.8 no.1, pp.136-159
https://doi.org/10.12651/JSR.2019.8.1.136
Jung-Hyun Kim
Byoung-Yoon Lee
Gi Heum Nam
Hwan Joon Park
Jin-Seok Kim
Kyeong-Ui Lee
Yeon-Soon Chang
Ji-Hong An

Abstract

This study was carried out to investigate the flora of six islands belonging to the Gogunsan Archipelago (i.e.,Sinsi-do, Seonyu-do, Munyeo-do, Yami-do, Bian-do, and Duri-do) in the Korean Peninsula. As results of five field surveys from March to October of 2016, we have identified 575 total taxa, representing 527 species, five subspecies, 42 varieties, and one hybrid, placed in 358 genera and 118 families. Of these 575 taxa, four are endemic to Korea, six taxa are listed on the Korean Red List of threatened species, 67 are floristic regional indicator plants, and 74 are invasive alien species. In this study, we compared species richness among the islands, and find that the larger the islands, the higher the species richness. In the case of habitat affinity types, forest species were most common, followed by farmland, seacoast, bare ground and wetland species. From similarity analyses based on the composition of vascular plants, each island did not exhibit either local specificity or unique diversity. On the contrary, the proportion of invasive alien and ruderal species may increase by human activities. Investigations and analyses of island flora such as this are important to assess the current status of the flora, predict future vegetation patterns and the spread of the alien species, and establish managment plans of plant diversity.

keywords
endemic plants, invasive alien plants, similarity index

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Journal of Species Research