• Title/Summary/Keyword: 완도

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The Comparative Analysis of Water Quality Environment Data of Wando Onshore Seawater Farm and Tidal Observatory (완도 육상 해수 양식장과 조위관측소의 수질 환경 데이터 비교 분석)

  • Ye, Seoung-Bin;Kwon, In-Yeong;Kim, Tae-Ho;Park, Jeong-Seon;Han, Soon-Hee;Ceong, Hee-Taek
    • The Journal of the Korea institute of electronic communication sciences
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    • v.16 no.5
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    • pp.957-968
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    • 2021
  • To improve the data on reliability of the onshore fish farm water quality monitoring system and operate the system efficiently, the water quality data of the onshore seawater fish farms which are progressing test operation, and the marine environmental information network(Wando tidal station) were compared and analyzed. Furthermore, data validation, data range filters, and data displacement checks were applied to analyze the data in a way that eliminates the data errors in water quality monitoring systems and increases the reliability of measurement data.

First Record of Gobiid Fish, Luciogobius parvulus (Perciformes: Gobiidae) from Wando Island, Korea (우리나라 완도 연안에서 채집된 망둑어과 (농어목) 한국 첫기록종, Luciogobius parvulus)

  • Kim, Min-Soo;Ra, Hye-Kang;Choi, Seong-Ho;Choi, Youn
    • Korean Journal of Ichthyology
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    • v.33 no.3
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    • pp.191-195
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    • 2021
  • Ten specimens of Luciogobius parvulus (42.8~49.0 mm SL) were collected from the coast of Wando-gun, Chollanam-do, Korea. This species is characterized by having 10~11 second dorsal fin rays, 11~13 anal fin rays, 11~12 pectoral fin rays, pelvic fin rays and free rays on pectoral fin absent. All specimens were collected from intertidal zone, rocky shore with gravel. It burrowed among moistened sediment composed of pebble. We propose the new Korean name, "Min-mi-kken-mang-dug", for the species.

Analysis and comparison of general compositions, amino acids, fatty acids and collagen of abalone harvested in three different regions in Korea (한국에서 생산되는 전복의 영양성분 비교 분석)

  • Li, Jinglei;Kim, Bo-Sub;Kang, Seong-Gook
    • Food Science and Preservation
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    • v.20 no.4
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    • pp.441-450
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    • 2013
  • In this study, the general compositions, amino acids, fatty acids and collagen content of three abalones, which were harvested in Wando, Heuksando and Jeju Island in Korea, were analyzed and compared. The abalone body and viscera were separated from each other and the physicochemical properties were investigated. The moisture and protein contents of the viscera were lower than that of the body; while the lipid, carbohydrate, and mineral contents were higher. The general compositions and mineral contents also presented fluctuation among the three abalone groups. The amino acid content via hydrolysis in the abalone viscera ranged from 93.16 to 127.02 mg/g, which was lower than the amino acid content of the abalone body of approximately 145 mg/g. However, the free amino acids level in the abalone viscera ranged from 16.81 to 20.10 mg/g, which was higher than that of the abalone body level of approximately 7.90 to 10.59 mg/g. The fatty acid analysis revealed that while the saturated fatty acid percentages in the abalone body were higher than in the abalone viscera, the percentages of the monoenoic and polyenoic fatty acids of the body were significantly lower. The body of the abalone harvested in Wando contained the highest level of collagen ($2.26{\pm}0.46mg/g$), followed by the abalone harvested in Jeju Island and Heuksando. The abalone viscera contained much lower collagen, which ranged from $0.37{\pm}0.15mg/g$ to $0.20{\pm}0.03mg/g$. The results of this study will provide useful information for the future research of abalone.

Development of Elite Lines with Improved Eating Quality Using RIL Population Derived from the Korean Weedy Rice, Wandoaengmi6 (국내 잡초벼(완도앵미6) 유래 RILs 집단의 식미 관련 특성분석 및 우량계통 선발)

  • Kim, Suk-Man;Park, Seul-Gi;Park, Hyun-Su;Baek, Man-Kee;Jeong, Jong-Min;Cho, Young-Chan;Suh, Jung-Pil;Lee, Keon-Mi;Lee, Chang-Min;Kim, Choon-Song
    • Journal of the Korean Society of International Agriculture
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    • v.31 no.4
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    • pp.428-436
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    • 2019
  • As the main objective of rice breeding programs, rice eating quality is one of critical factors directly determining the market price and the consumer preference. However, the genetic complexity of eating quality and the difficulty in accurate evaluation often constrain improvement of the eating quality in rice breeding programs. In addition, given that the rice eating quality of current cultivars has already reached some high-level, diversifying of genetic resources are demanded more than ever to improve the rice eating quality. In this study, we developed a recombinant inbred lines (RILs) population derive from Wandoaengmi6, a japonica-type Korean weedy rice with high eating quality and a high degree of glossiness of cooked rice. Year-to-year correlations between the traits in three years were shown normal distribution for major agronomic traits and physicochemical characteristics. After evaluating tested traits related to eating quality procedure, a total of ten lines were ultimately selected from the population. Increasement of the taste of cooked rice (TA) and the overall eating quality (OE) were confirmed in the selected lines, which are caused by alleles derived from Wandoaengmi6 without any linkage drag. These results indicate that the utility of wide genomic resources in Korean landrace could be of application in various rice breeding programs and countermeasure to contribute to properly response to climate change.

Variation of Species and Nutrient Composition of Benthic Diatoms on Plate during Culture Periods I. Wando area (배양기간에 따른 파판 부착규조류 종조성과 영양성분 변화 I. 완도지역)

  • 김해영;허성범
    • Proceedings of the Korean Aquaculture Society Conference
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    • 2003.10a
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    • pp.141-142
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    • 2003
  • 본 연구는 전복의 유생사육을 목적으로 먹이생물인 부착미세조류의 파판 배양시 배양기간에 따른 종조성과 영양성분의 변화를 파악하기 위하여 수행되었다. 실험은 완도지역에서 봄철인 2~4월에 8주 동안 실시되었다. 배양을 위한 기초 조사로 배양지역 연안해수의 수온, 염분, pH, 총질소, 총인, Chlorophyll-a를 측정 하였다. 실험에 사용된 파판은 전복 종묘생산에 이용되는 규조배양용 파판과 틀을 이용하여 2주마다 파판을 수거한 뒤 부착된 미세조류를 부드러운 솔로 분리하여 원심분리한 후 지방산과 아미노산을 측정하였다. 각각의 시료는 광학현미경(Nikon)으로 동정한 후 Sedwick-rafter counting chamber를 이용하여 종별로 계수하고 이를 단위면적당 개체수 (cells/$\textrm{cm}^2$)로 환산하여 정량분석을 하였다. 실험 결과 봄철 완도지역의 평균 수온과 염분은 각각 15.4$^{\circ}C$와 33.88$\textperthousand$이었고 pH는 8.21이었다. 총질소와 총인은 각각 0.078mg/$\ell$, 0.018mg/$\ell$였고 chlorophyll-$\alpha$는 1.47$\mu$g/$\ell$ 였다. 부착미세조류의 아미노산 분석 결과는 배양 2주째의 총아미노산 양이 5.63%로 가장 낮았고, 4주는 6.50%, 6주 7.82% 8주 7.87%로, 6주까지 증가하다가 정체하는 경향을 보였다. 필수아미노산의 경우 총아미노산의 경향과 비슷하였고 2, 4, 6, 8주째의 양은 각각 2.75%, 3.16%, 4.01%, 3.96%였다. 필수 아미노산과 비필수아미노산의 비는 2, 4, 6, 8주 각각 0.95, .095, 1.05, 1.01의 결과를 보였다. 지방산의 경우 palmitic acid( $C_{16:0}$)와 palmitoleic acid( $C_{16:1}$)가 43.10~67.66%의 함량을 보였으나 4주째에는 검출되지 않았으며 EPA는 6주에서 10.97%를 보였고 나머지 구간에서는 검출되지 않았다. 부착미세조류의 biomass는 기간별로 2.4$\times$$10^3$ cells/$\textrm{cm}^2$, 7.8$\times$$10^3$ cells/$\textrm{cm}^2$ 25.1$\times$$10^3$ cells/$\textrm{cm}^2$, 44.3$\times$$10^3$ cells/$\textrm{cm}^2$ 이었다. 출현량은 총 64종으로 대부분이 부착규조류였으며 2주, 4주, 6주, 8주 각각 43종, 25종, 19종, 24종의 부착 규조류가 출현하였다. 그리고 우점종은 2주째 Nitzschia petitiana, Fragilia psedonana, 4주 Navicula mollis, Flagilia cylindrus, 6주 Flagilia capucaina, Achnanthes haukiana, 8주 Flagilia islandica, Flagilia cylindrus였다.s였다.

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Restoration Model of Evergreen Broad-leaved Forests in Warm Temperate Region(IV) - Vegetation Structure of the Case Study Areas - (난대 기후대의 상록활엽수림 복원 모형(IV) - 사례지의 식생구조 -)

  • 오구균;김용식
    • Korean Journal of Environment and Ecology
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    • v.11 no.3
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    • pp.334-351
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    • 1997
  • To study restoration model of evergreen broad-leaved forests in warm temperate region, vegetation structure was studied at Wando(Island) as a case study. Quercus acuta was a dominant species at evergreen broad-leaved forests in Wando(Island). Majority of evergreen broad-leaved forests was a thirty years old coppice forest. Reforested vegetation and deciduous broad-leaved forests was developed at a mid-slope districts and a piedmont. Deciduous broad-leaved forestsconsisted of Quercus serrata, Carpinus tschonoskii, Carpinus coreana, etc., was developed at a ridge and higher districts. Evergreen broad-leaved woody plants were growing at a forest floor of deciduous broad-leaved forests. The species over sixty percent of constanty ratio in forty seven plots were Ligustrum japonicum, Trachelospermum asiaticum var. intermedium, Quercus acuta and Eury japonica. The vascular plants in the Wando(Island) was summarized as 488 taxa which composed as 101 families, 321 genus, 426 species, 56 varieties, 5 forms and 1 hyvrid. Evergreen broad-leaved woody stecies was 32 taxa which composed as 23 genus, 30 species and 2 varieties. The species such as Liliope platyphylla of Liliaceae and Pueraria thunbergii of Leguminosae, etc. was recorded as the highest values for their widely distribution in the areas. On the contrary, and forty taxa of plants such as Viburnum erosum of Caprifoliaceae, Traceholospermum asiaticum var. intermedium was recorded as over 50% of constancy ratio. Two hundred and nine taxa of plants such as Juglans manshurica of Juglandaceae, Cornus walteri of Cornaceae and Rodotypos scandens of Rosaceae, etc. was showed the specific trends due to long-term artificial disturbance. The forest of Pinus thunbergii showde the highest species diversities(155 species per 600m$^{2}$), while the Cinnamomum japonicum-Tracheolospermum asiaticum var. intermedium community showed the lowest species diversities(23 species per 600m$^{2}$).

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아까시나무(Robinia pseudo-acacia)의 종자 발아와 유식물 생장에 있어서의 온도 적응

  • 이호준;김창호
    • The Korean Journal of Ecology
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    • v.16 no.4
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    • pp.501-514
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    • 1993
  • In order to study the ecotypic variation of Robinia pseudo-acacza L. distributed in southern area of Korean peninsula, 15 local populations(Daejin, Sokcho, Kangneung, Mt. Surak, Hongcheon, Kwangneung, Namhansanseong, Chungju, Yesan, Andong, Jeonju, Dalseong, Changweon, Mokpo and Wando), located from $34^{\circ}18'N\;to\;38^{\circ}36'N$, were selected based on their latitudes and geographical distances. Seeds of these populations were collected and their germination and growth of seedlings were investigated. The optimum temperature of seed germination tends to decrease with ascending latitudes. The optimum temperatures of local populations were classified into three types: the north central type of $25^{\circ}C$(Daejin, Sokcho, Kangneung, Mt. Surak, Hongcheon, Kwangneung), the south central type of $30^{\circ}C$(Narnhansanseong. Chungju, Yesan, Andong, Jeonju), and the southern type of $35^{\circ}C$(Dalseong, Changweon, Mokpo, Wando). The optimum temperature for the growth of seedlings was $25^{\circ}C$ for all populations. The populations were also classified into three types : north central type, south central type and southern type based on the ranking on the growth of seedlings at 5 different temperatures of 15, 20, 25, 30 and $35^{\circ}C$, and the results of seedling growth showed similar patterns to those of the seed germination.

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Characteristics of Strong Wind Occurrence in the Southwestern Region of Korea (한반도 남서지역에서 발생한 강풍의 원인별 특성 분석)

  • Kim, Baek-Jo;Lee, Seong-Lo;Park, Gil-Un
    • Journal of the Korean Society of Hazard Mitigation
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    • v.9 no.4
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    • pp.37-44
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    • 2009
  • The characteristics of strong wind occurring over the southwestern part of the Korean peninsula are analyzed by using hourly mean wind data observed in Gusan, Mokpo, Yeosu and Wando from 1970 to 2008. The strong wind here is defined as wind speed of more than 13.9 m/s according to Korea Meteorological Administration (KMA)'s strong wind advisory. The causes of strong wind are classified into typhoon, monsoonal (wintertime continent polar air mass) and frontal (cyclone) winds. Typhoon wind is characterized by abrupt change of its speed and direction after and before landfall of typhoon and monsoonal wind by periodicity of wind speed. And frontal wind tend to be changed from southwesterly to northwesterly at observation site with location of frontal surface. Strong winds are mainly occurred in Yeosu by typhoon, Gusan and Mokpo by monsoonal wind, and Mokpo and Yeosu by frontal wind. In particular, in case of frontal wind, the frequency of strong wind in Mokpo decreases while in Yeosu it increases. Monthly frequency of strong wind is high in August in Mokpo and September in Yeosu by typhoon, January in Gusan and December in Mokpo by monsoonal wind, and in April in Mokpo and Yeosu by frontal wind. The duration less than 1 hour of strong wind is prominent in all stations.

A Study on the Characteristics of Summer Water Temperature Fluctuations by Spectral Analysis in Coast of Korea in 2016 (스펙트럼 분석을 통한 2016년 하계 한국연안의 수온변동 특성에 관한 연구)

  • Seo, Ho-San;Jeong, Yong-Hyun;Kim, Dong-Sun
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.26 no.2
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    • pp.186-194
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    • 2020
  • In this study, spectral analysis was conducted to identify environmental factors af ecting short-term changes in water temperature in the East, West and South coasts of Korea. The data used in the spectrum analysis is the 2016 summer water temperature, air temperature, tide level and wind data provided by Korea Hydrographic & Oceanographic Agency. In power spectrum results, peaks of water temperature and tide level were observed at same periods in West Sea (Incheon, Pyeungteak, Gunsan and Mokpo) and South Sea (Wando, Goheung, Yeosu, Tongyeong and Masan) where mean tidal range was more than 100 cm. On the other hand, periodicity of water temperature did not appear in East Sea and Busan where the mean tidal range was small. Coherence analysis showed that water temperature was highly correlated with tide in West Sea and three stations(Wando, Goheung and Tongyeong) of South Sea. Especially, correlation between water temperature and tide level in Wando and Tongyeong presented 0.96 at semi-diurnal period. Water temperature in Yeosu seems to have influenced by tide and inflow of fresh water. In Masan, water temperature is influenced by south wind, tide and inflow of fresh water. In East Sea, influence of tide on water temperature is small due to current and small tidal range. As a result of comparing the time series graph, stations where the correlation between water temperature and tide is high show that relatively cold water was inputted at flood tide and flow out at ebb tide. short-term variation of water temperature was affected by tide, but long-term variation over a month was affected by air temperature.

Characteristics of Incident Waves on Seaweed Farm Field Around Gumil-up Sea, Wando (완도 금일읍 주변해역 해조류 양식장에 내습하는 해양파랑 특성)

  • Jeon, Yong-Ho;Yoon, Han-Sam;Kim, Dong-Hwan;Kim, Heon-Tae
    • Journal of the Korean Society for Marine Environment & Energy
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    • v.15 no.3
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    • pp.177-185
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    • 2012
  • Wave field measurements were made over a period of 18 days to study the spatial distribution of incident wave on seaweed tarm field around Gumil-up Sea, Wando, Korea. These measured data were compared with data from the Geomun-do ocean weather/wave observation buoy. A numerical simulation model that combined the offshore design wave with the seasonal normal incoming wave was used to study the incident wave distribution surrounding a seaweed farm. The results are summarized as follows. (1) On-site wave measurements showed that the major relationship between maximum and significant wave height was $H_{max}=1.6H_{1/3}$. (2) Offshore incident wave energy reaching the coast was greatly influenced by the wind direction. A north wind reduced the incident wave energy and a south wind increased it. (3) The calculated maximum wave height under the design wave boundany conditions was in the range of 4~5 m and the reduction in the incident wave height ratio ranged from approximately 38.1% to 47.6% at Gumil-up Sea. Under normal wave conditions, the maximum wave heights were 3.6~4.0 m in summer and 2.3~2.7 m in winter while the reduction in the incident wave height ratio was about 41.8% to 49.1%. (4) The sea state in the southern area of Gumil-up was the most affected by ocean waves, whereas the sea state in the northern area was very stable. The significant wave ratio in the south was about six times that in the north.