• Korean Journal of Fisheries and Aquatic Sciences
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• v.47 no.6
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• pp.960-972
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• 2014

Marine algal flora and community structure were seasonally investigated at Oryukdo, on the southeast coast of Korea, from March 2011 to February 2014. A Total of 66 seaweed species including 6 green, 7 brown and 53 red algae were identified and 23 species were found throughout the survey period. Seaweed biomass was maximal during summer in 2012 (2276.2 g wet weight $m^{-2}$) and minimal in winter in 2012 (9.1 g wet weight $m^{-2}$). The dominant species in term of biomass were Undaria pinnatifida, Dictyopteris prolifera, Dictyota dichotoma, Sargassum horneri, Rhodymenia intricata, Acrosorium polyneurum, and Polyneura japonica during the suvery period. The flora could be classified into six functional groups: coarsely branched form (30.3%), filamentous form (24.2%), thick leather form (19.7%), sheet form (15.2%), jointed calcareous form (7.6%), and crustose form (3.0%). The numbers of marine algal species in the Oryukdo area were markedly reduced when compared with previous studies at Dongbaekseom in 1971. These results suggest possible future changes in the algal vegetation, considering the physical and chemical pollution loadings in the coastal marine environment of this area.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.50 no.4
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• pp.604-613
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• 2014

Community structures and species composition in benthic crustacean around Oryukdo of Busan was investigated using a SCUBA diving in 2011. A total 115 species, 51 families, and 4 taxa were collected during the sampling periods. Species were included 52 species in amphipoda, 49 in decapoda, 8 in isopoda and 6 in thoracica. On cluster analysis, the benthic crustacea community was classified into three groups based on the species composition: group A occurred in spring, group B in autumn and winter and group C in summer. Species composition in benthic crustacean corresponded with the water temperature.

• Journal of Fisheries and Marine Sciences Education
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• v.24 no.6
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• pp.781-792
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• 2012

Seasonal variation of species composition in marine organisms around Oryukdo of Busan was investigated using a gill net between 2009 and 2011. A total of 82 species, 52 families, and 6 taxa were collected during the sampling periods. Species were included two species in Cnidaria, one in Urochordata, 12 in Mollusca, 12 in Crustacea, seven in Echinodermata, and 48 in Pisces. The dominant species were Crepidula onyx, Asterina pectinifera, Ceratostoma burnetti, Asterias amurensis, Anthocidaris crassispina, and Trachurus japonicus. These six species accounted for 48.4% in the total number. Diversity indices were highest in spring 2009 (2.77) and lowest in spring 2011 (1.66). Seasonal variation of species composition and abundance in marine organisms corresponded with the water temperature.

• Journal of Fisheries and Marine Sciences Education
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• v.22 no.3
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• pp.420-430
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• 2010

The purpose of this study was to develop poetrytherapy program and to test it's effect on emotional intelligence of middle school students. Sixty-six(male 33, female 33) middle school students participated in this study. Thirty-three students were assigned to experimental group and control group respectively. The program which is composed of 14 sessions was applied to experimental group for 16 weeks. Subjects completed Emotional Intelligence Test. Collected data were analyzed using t-test and ANCOVA. The results of statistical analyses showed that there were statistically significant differences in emotional intelligence test scores between experimental group and control group. Based upon these results, it is concluded that poetrytherapy program was effective in improving emotional intelligence of middle school students.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.1
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• pp.9-16
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• 2017

As a preliminary study of enter or leaving traffic patterns of the Korea main port, port Management Information System (Port-MIS) data was used to check the volume of vessels entering and leaving the port of Busan, and three consecutive days from each seasons were selected for study. Selected 12-day General Information Center on Maritime Safety & Security (GICOMS) data was also used to analyze the traffic pattern in the main traffic lane of Busan port for dangerous goods carrier. Also, the distance between dangerous goods carriers and Oryukdo breakwater of east breakwater in the main traffic lane was analyzed. Collision probability was estimated using the cumulative probability distribution function of the normal distribution for the maritime traffic safety audit scheme based on the assumption that a ship's trajectory has a normal distribution for a section of the route. However, in case of entry or leaving thorough the Oryukdo breakwater and entry thorough the east breakwater, ship's sailing trajectories were revealed not to follow a normal distribution via regularity testing using a KS-test and SW-test. Especially in the north port, the tendency of the right side of the ship to pass was remarkable. It is desirable to develop a traffic model suitable for the characteristics of the port rather than to apply general traffic theories, and to apply this model to a maritime traffic safety diagnosis, so further research is needed.

• The Journal of the Petrological Society of Korea
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• v.26 no.2
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• pp.99-112
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• 2017

Geoheritage is designated to preserve geodiversity of geological and geomorphological cases. Geotourism is an extensive activity that aims at the understanding of geology and earth's history for the geoheritage and for developing regions through preserving the geodiveristy of geoheritage. Igidae-Oryukdo is geosite of Busan National Geopark and its visitors are expected to grow rapidly. Accordingly, for the effective use of the geosites, The development and application of geotourism is required. This study suggests that tuffacious sedimentary rocks, hornblende megacrysts-bearing dike, copper mine, marine potholes should designated as the central points for advanced learning stage; volcanic breccia, sea caves, sea cliffs, wavecut platform, tor and islands as the central points for basic learning stage. Based on this central points, this study established concepts for getourism in this study area at basic and expert level for individual and family tourists, and also small or large groups such as school students.

• Journal of Fisheries and Marine Sciences Education
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• v.29 no.1
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• pp.257-269
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• 2017

The occurrence variations of decapods by season and depth off Oryuk Islets, Busan were investigated at seven stations in April and October 2009, July 2010 and January 2011. Decapods were collected by SCUBA diving at 5 m and 10 m depths. 46 species belonging to 18 families in 3 orders were identified. Pilumnus minutus, Pugettia intermedia, Pachycheles stevensii, and Paguristes japonicus were dominant species, comprising 73.0% of total decapods. P. minutus and P. intermedia were abundant in all seasons (except summer) while P. stevensii and P. japonicus were abundant in fall and summer. Dominant species were divided into three groups (resident species, seasonal species and temporary species) on the basis of their occurrence patterns. P. minutus and P. intermedia were resident species while P. stevensii, P. japonicus were temporary species. The species number, density and biomass of decapods were fluctuated by seasons. They were highest in fall and lowest in winter. This study implied that the variations of species number and density of decapods were significantly related with seasonal change of water temperature.