Floristics of bryophytes in Dongbaek-dongsan at Seonheul Gotjawal
2013
Yim, E.Y., nagasaki University, Nagasaki, Japan | Moon, M.O., Jeju National University, Jeju, Republic of Korea | Sun, B.Y., Chonbuk National University, Jeonju, Republic of Korea | Nakanish, K., nagasaki University, Nagasaki, Japan
This study presents a survey on the bryophytes in Dongbaek-dongsan located at Seonheul Gotjawal on the north-eastern face of Mt. Halla in Jeju Island, Korea. A total of 85 taxa belonging to the Bryophyta (22 families 44 genera 62 species), Marchantiophyta (12 families 16 genera 23 species) were found. Among them, 3 moss species, Diphyscium perminutum Takaki, Racomitrium japonicum Dozy and Molk., and Isopterygium minutirameum (Mull. Hal.) A. Jaeger. were new additions to the bryophyte flora of Korea. The liverwort index was 27.0%. Predominant life-form was weft. The rates for the bryophytes dominating in mesic to hygric sites were higher than for the bryophytes mainly observed in xeric habitats. We considered that the composition and distribution of species are affected by the different environmental factors according to the evergreen broad-leaved forests, wetlands and exposed spaces. Moreover, the rocks were the substrate type that play a major role in providing the micro-habitats for bryophytes in this area. Particularly, the bryophytes of swamps in this area were very unique and various for its limited space and showed plant communities with mosaic spatial pattern, along with vascular plants. We suggest more detailed and comprehensive studies on the swamps where endemic fern Mankyua chejuense B. -Y. Sun, M. H. Kim and C. H. Kim inhabits to provide valuable information for the conservation and restoration of the species and habitats.
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