• Journal of the Korean Institute of Traditional Landscape Architecture
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• 제33권4호
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• pp.1-9
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• 2015

This study is conducted to prove a hypothesis that Dokdo Island has "National Landscape Image," being a region with special meaning for Korean people. University students(51 Koreans and 44 foreigners) were surveyed on landscape images of Dokdo Island, and the statistical analysis of the survey responses was performed subsequently. The findings showed no substantial difference between the opinions of Korean men and women: Especially the photo of whole Dokdo was highly rated by Korean respondents as "considerably or very valuable and impressive, but also mysterious and symbolic at the same time." These are unique images of Dokdo Island, which are not found in responses to natural landscape of other national parks. Meanwhile, there were significant contrasts between the responses of Koreans and foreigners in every variables. Some landscape adjectives used as semantic differential scale demonstrate remarkable differences between Korean and foreign respondents, particularly on the photo of whole Dokdo: impressive(1.41), mysterious(1.25), symbolic (1.00), valuable(0.98), intimate(0.95), beautiful(0.93), interesting(0.85). There were substantial differences in responses between Korean and foreigners on two rock islands, which have names related with some national image: The Korean Peninsula Rock(0.57) and Independence Gate Rock(0.51). Finally, three primary factors drawn from the factor analysis were (1) national landscape image, (2) natural characteristics of Dokdo Island, and (3) spatiality of Dokdo Island.

• Korean Journal of Plant Resources
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• 제22권1호
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• pp.96-101
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• 2009

Dokdo was formed since when four million six hundred thousand to two million five hundred thousand. Dokdo, Ulreung Island and the mainland in Korea are not touch each other since the formation, therefore, Dokdo are very important island for discussion of plant evolution from plant geography point of view. Plants of Dokdo was enlisted as 60 taxa, 27 families, 52 genera, 50 species and 10 varieties. The naturalized plants of a wide sense is composed of 25 taxa, two tree species as Lonicera morrowii and Elaeagnus macrophylla, and 23 herbs. The naturalized plants were identified of 5 species as Sonchus oleraceus, Brassica juncea var. integrifolia, Rumex crispus, Chenopodium album, and Bromus unioloides. Total naturalized plants are 32 taxa, ratio of total naturalized plants per a existing species was 60 percentage. Accordingly Vegetational environment of Dokdo was interpreted very incomplete state as well as severe ecological disturb by invade species. Preparation of a regulating plan on naturalized plants and concern of a policy decision are requested in the conservational dimension for native species in Dongdo. For the conservation of native species in Dokdo, there are prepared that a regulating plan as block of the influx and eradication etc. and a policy decision of naturalized plants are prepared for view of the conservation for native species in Dokdo.

• Ocean and Polar Research
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• 제41권2호
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• pp.47-61
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• 2019

The Dokdo coast is known for its high biodiversity. However, few studies have examined the biodiversity and macrobenthic community on the subtidal soft-bottom. Therefore, we collected macrobenthos (> 1 mm) using a Smith-McIntyre grab ($0.1m^2$) at 15 stations along the Dokdo coast in September 2016. The sediments consisted of badly sorted (1.7) coarse sand with gravel and the mean sediment grain size was $-0.4{\phi}$. In total, 177 macrobenthic species were collected; their mean density was $1,566ind./m^2$. The number of species and density of macrobenthic fauna decreased significantly with the mean grain size. The dominant species were the amphipods Melita denticulata (16.5%) and Melita shimizui (5.5%), polychaete Salvatoria clavata (5.4%), bivalve Glycymeris aspersa (4.4%), and ophiuroid Ophionereis dubia (4.3%). The dominant macrobenthos species on the subtidal soft-bottom differed from the coastal areas of the East Sea, suggesting that the difference in the sediment grain size affected the macrobenthos. Cluster analysis was performed to divide the study area into four groups, and environmental factors which correlated with species composition and distribution in the study area were the combination of the four parameters of salinity, dissolved oxygen, total organic carbon and depth. A future seasonal investigation is needed to understand the species composition and characteristics of the Dokdo macrobenthos.

• Animal Systematics, Evolution and Diversity
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• 제39권2호
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• pp.61-66
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• 2023

Through a taxonomic study on solitary corals collected from subtidal zones of South and East Seas from 2019 to 2022, Paracyathus rotundatus, an unrecorded species belonging to family Caryophylliidae, is newly added to the anthozoan fauna of Korea. In addition, comparing partial 16S rRNA sequences with a length of 269 bp according to color variation clarified that there were no sequence differences among specimens with color variation, indicating that the color variation is due to intraspecific variation. As a result of this study, a total of 7 genera and 8 species belonging to the Caryophylliidae family have been reported in Korean waters so far.

• Animal Systematics, Evolution and Diversity
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• 제25권3호
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• pp.261-264
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• 2009

A maritime pseudo scorpion Garypus japonicus Beier, 1952 collected from Dokdo Island in the East Sea of Korea is reported and illustrated, which is the first record in Korea. The family Garypidae is also newly recorded in Korea. G. japonicus has been known only from Japan by Beier (1952) so far. Through the present study, its distributional range is extended to Korea.

• Journal of the Korean association of regional geographers
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• 제16권3호
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• pp.324-337
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• 2010

We believe, 'Dokdo is clearly an inherent territory of Korea, in the light of geographical and historical facts', This paper aims to discuss Japanese multidimensional approach on the Issues of Dokdo(Takeshima) in the context of Territory Education. We considered the matter from various angles that supported by the ministry of Foreign affairs and the ministry of Education in national scale, as well as shimane prefecture government and municipality scale. Therefore, It is likely that the approach of territory education on Dokdo in Japan is variable and potential, and is temporary state of condensation, depends on Korea-Japan's political, economical, social, and international conditions. More studies of the new approach must be done for the new implications of Territory Education that embraces all meanings and events according to the disposition of neighbouring condition of Dokdo in world context, keeping out emotional and nationalist sympathies. The result of consideration in this paper are as follows. First, Territory Education in japan was focused on geography, history, Civil, Social Studies, compared with focusing on History in Korea. Second, It is centered on "korea is illegally occupying Dokdo, against which Japan has been consistently making strong protests" rather than simple historical approach. Thirdly, Their approaches seek to be succeeded the identity and importance of Territory Education to next generation rather than the present solving problem.

• Ocean and Polar Research
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• 제24권4호
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• pp.457-464
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• 2002

Distribution and stock assessment of mega-benthos living in the shallow hard bottom around Dokdo were studied in July,2000. Depth and topographical conditions have affected to the densities and biomass of benthic animals. In shallow area, less than 10 m depth, turbo shell Batillus cornutus, mussel, Mytilus corusucs were dominated and showed distinct patterns in vertical distribution. On the other hand, the area over 10m depth, it showed diverse pattern depending on topography. Turbo shell, mussel and sea cucumber Stichopus japonicus were dominated in terms of fishery resources, but abalones were rarely sampled. Stock assessment were estimated to be 6.54 M/T, 3.89 M/T and 8.92 M/T, respectively. Some parts of coastal hard bottom around Dokdo, such as the area between Dongdo and Seodo, seemed to play an Important role as nursery ground. Therefore, it is necessary to the environmental monitoring for coastal fishery managements aspects.

• Animal Systematics, Evolution and Diversity
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• 제32권1호
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• pp.1-8
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• 2016

Vermamoeba vermiformis is a very important free-living amoeba for human health in association with Legionnaires' disease and keratitis. This interesting amoeba was firstly isolated from a freshwater of Dokdo (island), which was historically used for drinking water. Trophozoites and cyst forms of V. vermiformis strain MG1 are very similar to previous reported species. Trophozoites of V. vermiformis strain MG1 showed cylindrical shape with prominent anterior hyaline region. The average ratio of length and width was about 6.5. Typically, cysts of the strain MG1 showed a spherical or slightly ovoidal shape with smooth wall, and lacked cyst pores. Some cysts had crenulate-walled ectocyst, which was separated from endocyst wall. Further, 18S rRNA gene sequence of V. vermiformis strain MG1 showed very high similarity to other V. vermiformis species (99.4%-99.9% identity). Molecular phylogenetic analysis based on 18S rRNA gene sequences clearly confirmed that the isolate was one strain of V. vermiformis with maximum bootstrap value (maximum likelihood: 100%) and Bayesian posterior probability of 1. Thus, the freshwater of Dokdo in Korea could harbor potentially pathogenic amoeba that may cause diseases in humans.

• Ocean and Polar Research
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• 제35권4호
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• pp.313-322
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• 2013

The concept of effective control is a crucial element for the acquisition as well as maintenance of territorial title. The general meaning of the concept has been described as 'an intentional display of power and authority over the territory, by the exercise of jurisdiction and State functions, on a continuous and peaceful basis'. The concept has been developed through some significant international cases such as the Island of Palmas case (1928), Legal Status of Eastern Greenland (1933), Minquiers and Ecrehos case (1953), Burkina Faso/Mali case (1986) and Nicaragua/Colombia case (2012). In relation to Dokdo, the concept has an important bearing in regard to Korea's claims of territorial sovereignty over the island. This paper reviews the definition, components and ramifications of the effective control with regard to the acquisition and maintenance of territorial title through analyzing the relevant judgements of international courts and tribunals. Furthermore, it exams the legal ramifications of the current effective control on Dokdo and makes some suggestions for the strengthening of Korea's position on the island.

• Ocean and Polar Research
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• 제24권4호
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• pp.491-500
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• 2002

Magnetic anomalies in the Dokdo and it's surroundings were investigated with respect to structure and origin of the Dokdo and surrounding seamounts. After normal and diurnal correction of measured magnetic data, crossover correction was applied to reduce errors between sets of magnetic anomalies. The errors from crossover operation result in decrease of about 51%, from 62.2 nT to 30.1 nT in standard deviation. Reduction-to-the-pole, second vertical derivative and analytic signal processing were applied to explore magnetic anomaly signatures in detail. Magnetic anomalies are most complicated in the 1st-Dok seamount, show SWW-NEE linear pattern in the 2nd-Dok seamount and lower to the 3rd-Dok seamount. Different magnetic anomaly patterns in three seamounts imply that three volcanic seamounts were formed at different times and are composed of rocks that were produced in different conditions. It seems that the 3rd-Dok seamount was first to form and followed by the 1st-Dok seamount. The complicated magnetic and second vertical derivative anomaly patterns in the 1st-Dok seamount may be due to subsidiary cones around crater or the presence of intruded magma bodies below sea surface and the Dokdo is probably a marginal subsidiary part of crater.