• 대한지구과학교육학회지
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• 제8권2호
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• pp.128-138
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• 2015

The purpose of this study is to examine potential as a geological field course of Odongdo located to the east of Yeosu city, Korea. The total area and the height from the sea level of Odongdo is about 0.13km2 and 42m, respectively. Odongdo area belongs to the Hallyeohaesang National Marine Park, and is famous for rock scenery in the rocky coast and living of rare plants. For this study, diversity of geomorphology and geology was investigated at the sites called as dragon cave, windy area, seal rocks, sunrise viewing platform, second seashore rocks and first seashore rocks along the coast of Odongdo. The results of this study are as follows: A lot of geomorphological and geological resources like sea cliff, sea cave, strata, various sedimentary rocks(conglomerate, sandstone, mudstone), andesite, fault and examples of rock weathering were found in the rocky coast of the study area. These field resources are pertinent to the field work materials for the teaching and learning of geology units in elementary school science. Odongdo is to be recommended as a site of outdoor geological field course for the elementary school students inhabited in Yeosu city and neighborhood area because each site of the rocky coast in this study area has various field work materials and the wide space for observe activities, and is equipped with the facilities as a trail for rock observation.

• The Korean Journal of Ecology
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• 제6권3호
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• pp.208-226
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• 1983

The vegetation of Odongdo island was surveyed over twenty-nine times from April, 1982 to August, 1983. This island is located at 127。46'05'∼127。39'37'E. longitude and 34。40'20'∼34。48'14'N. latitude. The vegetation of this island consisted of 94 families, 261 genera, 314 species, 53 varieties and 6 formae. And among them were 170 species of woody plants and 203 species of herbs. The community of evergreen broad-leaved trees comprised a total of 44 species including Sasa coreana Nakai and camellia japonica L. and the distribution of evergreen broad-leaved trees was good in this island as a whole. Sasa coreana Nakai, Castanopsis cuspidata var. sieboldii Nakai, Ficus erecta Thunb., Ficus nipponica Fr. et Sav, Stauntonia hexaphylla (Thunb.) Decne, Cinnamomum japonicum Sieb., Machilus thunbergii S. et Z., Lozoste lancifolia (S. et Z.) Bl., Ilex intergra Thunb., Camellia japonica Thunb., Hedera rhombea Bean and Ardisia japonica Bl. etc. in this island were autochthonous flora and their preservation is required.

• 한국수산과학회지
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• 제16권4호
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• pp.368-378
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• 1983

본 연구는 1982년 6월부터 1983년 5월까지 전남 여수반도 남단에 위치한 오동도 해조군락의 특성을 밟히기 위하여 5개의 line transect를 설치하고 연간 계절별로 조사된 자료를 분석 하였다. 해조류의 수직분포는 상부군이 Gelidium divaricatum, Enteromorpha linza, Porphyra yezoensis, Scytosiphon lomentaria, Blidingia nana, Ectocarpus confervoides, 중부군이 Ulva pertusa, Chondria crassicaulis, 그리고 하부군은 Sargossum sagamianum, Undaria pinnatifida, Sargassum thunbergii 및 Gelidium amansii 등의 홍조류로 대표되었다. 출현해조의 종수와 피도는 4월에 최대이고 8월에 최소로되며 종별 우점도의 변화는 연중 출현종은 10월에, 일계절 출현종은 1월 또는 4월에 각각 최대치를 나타내었다. 유사도지수에 따른 5개 transect의 cluster analysis 결과 내만성군과 외양성의 2군으로 분류되었으며 본 지역은 남해안 중${\cdot}$동부 군락에 해당되는 Myelophycus simplex alliance의 Colpomenia sinuosa-Ecklonia cava association에 속한다고 본다.

• Journal of Plant Biology
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• 제18권3호
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• pp.109-121
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• 1975

The seasonal variations of the marine algal community were detected with quadrat method during May, 1974-May, 1975 at several stations in the Kwang Yang Bay. Considering the environmental factors such as salinity and water current, etc., and algal vegetation, the Bay was divided into 3 sections; Section I-Myodo and the adjacent area; Section II-Eomnamuseom and the adjacent area; Section III-inlet of the Bay from Odongdo, Yeosu. The dominant species, shown by 5-grades coverage and bimonthly investigations, appear in the order of Sargassum thunbergii(Jan.)>Chondria crassicaulis (Mar.)>Ulva pertusa(May)>U. pertusa (July)>U. pertusa and Gigartina intermedia(Sept.)> Sarg. thunbergii and Gelidium pusillum (Nov.) in Section I, and Sargassum thunbergii(Jan.)>Ulva pertusa and Hizikia fusiforme (Mar.)>U. pertusa and Sarg. thunbergii(May)>Chondria crassicaulis (Sept.)>Ch. crassicaulis (Nov.) in Section II. The members such as Srgassum thunbergii, Gelidium pusillum, G. divaricatum, Hizikia fusiforme, Carpopeltis affinis, and Chondria crassicaulis show the most luxuriant period of growth in winter (Nov.-Mar.), while Ulva pertusa shows the period in May. However, considering the dry weight of total vegetation, the most luxuriant period apperas in May and the poorest one in July. The total dry weight of the vegetation in Section II is about 3.2 times more than the one in Section I.

• Journal of Plant Biology
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• 제17권4호
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• pp.38-44
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• 1974

The distribution of corticolous lichens had been investigated in the suburb of Seoul in which factories are located densely and Yeosu which located near sea and very few factories are seen in the neighbour. Ten cm point frame was located at random on the trunk of Pinus densiflora, Quercus serrata and Carpinus Tschonoskii from bottom at 0.5m intervals to 8m height of each trees. The occurrence of each species was represented as a percentage of total quadrat frequency and of density. The density of the corticolous lichens was 2.8%, 6.9% and 7.6% at Dongkooneung, Kongneung and Kwangneung apart 15km, 25km and 32km from center of Seoul respectively. In Yeosu district, the occurrence is fairly different from that of Seoul: it is 34.8% and 34.9% at Odongdo and Hoamsan which located within 3km and 5km from the center of Yeosu. The greater frequency of the lichens on the trunk was found at 1~2m height of trees and they were found mostly on the trunk faced south. However, Pertusaria trochophora species occurred more often on the trunk faced east, Graphis scripta on east and north, Parmelia pertusa and Parmelia tinctorum on west side of trunk. Parmelia pertusa increased with increasing height of trees, but Calicium trabinellum and Anzia japonica decreased. Cetraria collata occurred mostly on the middle of above two species. SO2 concentration in the air of Seoul was high enough to eliminate the lichens except Pertusaria trochophora and Graphis scripta.

• 한국환경생태학회지
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• 제12권4호
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• pp.389-397
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• 1999

본 연구는 한려해상국립공원의 이용객 행태를 분석하기 위해 수행되었다. 이를 위해 자체 개발한 설문지를 이용한 설문조사를 1998년 8월 21일부터 8월 23일까지 실시하였다. 설문조사에는 한려해상국립공원의 거제, 통영, 남해, 오동도 지구를 방문한 303명의 이용객이 참여하였다. 응답자의 남녀비율, 교육 및 소득수준, 연령별분포 등 사회경제적 특성은 타 국립공원에서 실시된 이용객 조사결과와 유사한 경향을 보였다. 이용객에 의한 공원 내에서의 쓰레기 불법투기는 이용자들의 습관적 행위에 기인한다는 인식이 높았으며, 현재 시행중인 Clean-up-Time운동에 대한 이용객의 인식은 낮은 것으로 나타났다. 한려해상국립공원에서 이용객들의 휴양경험에 영향을 미치는 영향인자들로서 생태계 보전상태, 자연경관의 질, 쓰레기 문제, 안전성, 공원관리자의 친절이 제시되었으며, 이들 인자들에 대한 이용자 만족도는 응답자들의 기대수준에 못 미치는 것으로 나타났다. 그러나 이용객들은 전반적인 휴양경험에 대해 비교적 만족하는 수준으로 나타났다.

• Journal of information and communication convergence engineering
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• 제9권4호
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• pp.475-482
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• 2011

In this research, we have attempted to estimate the water quality of fish farms in terms of parameters such as water temperature, dissolved oxygen, pH, and salinity by employing observational data obtained from a coastal ocean observatory of a national institution located close to the fish farm. We requested and received marine data comprising nine factors including water temperature from Korea Hydrographic and Oceanographic Administration. For verifying our results, we also established an experimental fish farm in which we directly placed the sensor module of an optical mode, YSI-6920V2, used for self-cleaning inside fish tanks and used the data measured and recorded by a environment monitoring system that was communicating serially with the sensor module. We investigated the differences in water temperature and salinity among three areas - Goheung Balpo, Yeosu Odongdo, and the experimental fish farm, Keumho. Water temperature did not exhibit significant differences but there was a difference in salinity (significance <5%). Further, multiple regression analysis was performed to estimate the water quality of the fish farm at Keumho based on the data of Goheung Balpo. The water temperature and dissolved-oxygen estimations had multiple regression linear relationships with coefficients of determination of 98% and 89%, respectively. However, in the case of the pH and salinity estimated using the oceanic environment with nine factors, the adjusted coefficient of determination was very low at less than 10%, and it was therefore difficult to predict the values. We plotted the predicted and measured values by employing the estimated regression equation and found them to fit very well; the values were close to the regression line. We have demonstrated that if statistical model equations that fit well are used, the expense of fish-farm sensor and system installations, maintenances, and repairs, which is a major issue with existing environmental information monitoring systems of marine farming areas, can be reduced, thereby making it easier for fish farmers to monitor aquaculture and mariculture environments.

• 한국산림과학회지
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• 제76권4호
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• pp.397-409
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• 1987

한려해상국립공원(閑麗海上國立公園)의 일부인 오동도(梧桐島)에 대하여 이용자에 의한 식생구조(植生構造)의 변화(變化)와 이용자의 심리(心理)를 분석하였다. 식생구조분석을 위하여 식생피해등급도(植生被害等級度)에 따라 5개의 조사구(調査區)를 선정, 각 조사구에 $10{\times}10m$ 방형구 5개씩을 설치, 조사하였고, 심리분석(心理分析)은 1986년 5월 10, 11, 15일에 걸쳐 무작위로 총366명에게 배포한 설문지(說問紙)에 의해 조사하였다. 현재식생(現在植生)은 상록활엽수인 후박나무, 녹나무, 동백나무 등의 혼효림(混淆林)이 전체 삼림의 32.5%(3.91ha)를 차지하였고, 동백나무림 및 신 이대림의 면적은 각각 40.0%(4.72ha) 및 41.8%(5.02ha)이었다. 인간간섭(人間干涉)에 의한 식생피해등급도(植生被害等級度) 3 및 4 단계가 전삼림의 44.3%이며, 특히 하층식생(下層植生)에 대한 피해가 심하였고, 이용자수(利用者數)를 제한하지 않는다면 자연회복(自然回復)은 불가능할 것이다. 식생구조분석(植生構造分析)의 결과, 동백나무, 후박나무 등의 상록활엽수림은 차대림(次代林)의 발달이 이용자에 의해 방해를 받아 앞으로 참나무류가 우점종(優占種)인 삼림으로 천이(遷移)가 역행될 것이므로 이용자의 임내(林內)의 출입(出入)을 통제해야할 것이다. 이용자의 심리분석(心理分析)에서, 오동조의 이용(利用)은 일요일 및 휴일에 집중되었고, 계절로는 4~5월에 집중되는 일계절집중형태(一季節集中形態)이었다. 이용자가 좋아하는 장소는 바다가 보이는 곳과 동백나무의 숲이었고, 오동도의 전체적인 만족도(滿足度)는 만족이 55%로의 높은 수준(水準)이었고, 전체적인 만족도에 영향을 크게 미치는 항목은 이용자(利用者)의 수(數), 숲의 경관(景觀)과 시설물(施設物)의 수(數)이었다.