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http://dx.doi.org/10.7850/jkso.2020.25.4.106

Distribution of the Seagrass, Zostera spp. in Ulleungdo  

PARK, JUNG-IM (Marine-Eco Technology Institute)
KIM, JAE HOON (Marine-Eco Technology Institute)
SONG, HWI-JUNE (Department of Biological Sciences, Pusan National University)
KIM, GU YEON (Department of Science Education, Kyungnam University)
Publication Information
The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY / v.25, no.4, 2020 , pp. 106-116 More about this Journal
Abstract
To examine distribution of the Zostera species growing naturally in Ulleungdo, scuba diving surveys using ships were conducted along the coast and inside the harbors of the island at the end of September 2019. In areas of seagrass occurrence, environmental factors such as nutrient concentrations in water column and sediment pore water, salinity, and sediment organic content were also analyzed. Zostera caulescens meadows appeared in the relatively deep waters (14-24 m MSL) of Cheonbu-ri, Jeodong-ri, Sadong-ri, and Namyang-ri in Ulleungdo, and the total seagrass coverage was approximately 4.9 ha. Approximately 0.9 ha of Zostera marina meadow was found at the depths of 3-5 m MSL within Hyeonpo-hang in Hyeonpo-ri. The average shoot density and biomass of Z. caulescens were 121.9±9.7 shoot m-2 and 99.0±13.2 gDW m-2, respectively, with no significant differences by location. The average shoot density and biomass of Z. marina were 193.8±18.8 shoot m-2 and 102.6±6.8 gDW m-2, respectively. The nutrient concentrations in the sediment pore water and sediment organic content in the seagrass meadows in Ulleungdo were lower than those in eelgrass meadows on the southern and eastern coasts of Korea. These results will provide useful basic information for the marine protected species, Z. caulescens and Z. marina, and for the conservation of the waters of Ulleungdo, which has been designated as a marine protected area.
Keywords
Seagrass; Zostera spp.; Distribution; Ulleungdo; Marine protected species;
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Times Cited By KSCI : 8  (Citation Analysis)
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