Zoological Studies

Vol. 51 No. 5, 2012

Biodiversity of Marine Invertebrates on Rocky Shores of Dokdo, Korea

Shi-Hyun Ryu1, Kuem-Hee Jang1,2, Eun-Hwa Choi1,2, Sang-Ki Kim1,2, Sung-Joon Song1,3, Hyun-Jin Cho1, Ju-Sun Ryu1, Youn-Mi Kim1, Jin Sagong1, Jin-Hee Lee1,2, Mi-Young Yeo1, So-Yeong Bahn1, Hae-Min Kim1,2, Gil-Seong Lee2, Don-Hwa Lee2, Yeon-Sik Choo2, Jae-Hong Pak2, Jin-Soon Park4, Jong-Seong Ryu5, Jong-Seong Khim4, and Ui-Wook Hwang1,2,*

1Department of Biology, Teachers College and Institute for Phylogenomics and Evolution, Kyungpook National Univ., Daegu 702-701, Republic of Korea
2School of Life Science, Graduate School and Institute for Ullengdo and Dokdo, Kyungpook National Univ. Daegu 702-701, Republic of Korea
3Marine Research Center, National Park Research Institute, Sacheon 664-701, Republic of Korea
4Division of Environmental Science and Ecological Engineering, Korea Univ., Seoul 136-713, Republic of Korea
5Department of Marine Biotechnology, Anyang Univ., Ganghwagun, Incheon 417-833, Republic of Korea

Shi-Hyun Ryu, Kuem-Hee Jang, Eun-Hwa Choi, Sang-Ki Kim, Sung-Joon Song, Hyun-Jin Cho, Ju-Sun Ryu, Youn-Mi Kim, Jin Sagong, Jin-Hee Lee, Mi-Young Yeo, So-Yeong Bahn, Hae-Min Kim, Gil-Seong Lee, Don-Hwa Lee, Yeon-Sik Choo, Jae-Hong Pak, Jin-Soon Park, Jong-Seong Ryu, Jong-Seong Khim, and Ui-Wook Hwang (2012) Benthic fauna were collected from the intertidal rocky shores of Dokdo Is., Republic of Korea.  Four qualitative surveys were performed at 9 stations between Aug. 2007 and June 2008.  In total, 98 marine invertebrate species in 57 families were identified during the study period.  Of these 98 species, 21 (> 20%) were newly recorded on Dokdo Is. shores including members of the Arthropoda (n = 8), Mollusca (n = 4), Annelida (n = 4), Echinodermata (n = 2), Porifera (n = 1), Cnidaria (n = 1), and Platyhelminthes (n = 1).  By comparing related references, we identified that the 98 species found at Dokdo exist in mainland areas of both Korea and Japan.  Topographical descriptions and ecological comments are given for each of the major species.  Among the 7 phyla presented, the Mollusca and Arthropoda predominated, accounting for > 70%-100% of the total taxa at each station.  A cluster analysis showed that the faunal composition and distribution of invertebrates considered by habitation types (attached, sessile, or mobile species) were possibly related to the topographical characteristics of each station.  Altogether, 403 species (of 10 phyla and 172 families) from a combination of the present and previous studies indicate that the marine invertebrates inhabiting the rocky bottoms in the Dokdo ecosystem show high and dynamic biodiversity.

Key words: Dokdo, Marine Invertebrates, Macrofauna, Far East, Biodiversity.

*Correspondence: Tel: 82-53-9505911.  Fax: 82-53-9506809.  E-mail:uwhwang@knu.ac.kr; jongseongkhim@korea.ac.kr