• 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.

• Journal of Korean Society of Forest Science
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• v.89 no.1
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• pp.93-104
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• 2000

The ecological characteristics of 10 natural stands of Dendropanax morbifera(Haenam, Wando 1, Wando 2, Bogildo, Kemundo and Hongdo and Sendol, Suoak, Hannam, and Kidowon populations in Cheju island) were studied. In most of the Dendropanax morbifera natural stands, the following tree species appeared predominantly : Camellia japonica, Castanopsis cuspidate var. sieboldii, Castanopsis cuspidate var. thunbergii, Carpinus laxiflora, Quercus acute and Eurya japonica. Especially, Camellia japonica and Eurya japonica appeared in all the stands. Dendropanax morbifera occupied 17.2% of the upper story, 12.9% of the middle story, and 10.3% of the lower story, respectively. The distribution patterns by Morisita's Index showed that Dendropanax morbifera was distributed randomly in all of the three stories, i.e. the upper, the middle and the lower stories. Dendropanax morbifera was positively associated with Camellia japonica, Eurya japonica, Carpinus laxiflora, Cinnamomum japonicum, Ligustrum japonicum, Callicarpa Japonica, Castanopsis cuspidate var. thunbergii, Castanopsis cuspidata var. sieboldii, Daphniphyllum macropodum, Acer palmatum and Euonymus oxyphyllus. This might suggest that the ecological niche is similar to each other. The cluster analysis using percent dissimilarity(PD) based on species composition divided into two groups. One group consisted of the populations located along the south-western coasts. The other group consisted of the populations of Cheju island. This result was agree with that of ordination analysis. From these results, We could find out that the species composition of the populations of Dendrapanax morbifera in Cheju island was quite different from those of other regions.

• The Korean Journal of Mycology
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• v.51 no.1
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• pp.51-56
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• 2023

Dendropanax trifidus belonging to the family Araliaceae, is a warm-temperate evergreen tree distributed in Jeju Island, Bogil Island, Geomun Island, Geoje Island, Wando, and Haenam in Korea. In June 2021, a root rot disease in which branches of Dendropanax trifidus seedlings turned brown and shrunk was discovered at the seedling cultivation facility in Naju-si, Republic of Korea. To identify the root rot fungus, three strains were isolated from the diseased tissues of seedlings and their mycological characteristics were investigated on potato dextrose agar. In addition, a molecular phylogenetic analysis was performed using sequences of the internal transcribed spacer (ITS) region and translation elongation factor 1-α (EF1-α) gene. The fungus was identified as Fusarium oxysporum. For pathogenicity test, the roots of seedlings were immersed in the conidia suspension of the strains and planted. After 20 days inoculation, root rot and browning symptoms were confirmed in the inoculated plants. This is the first report of F. oxysporum on D. trifidus in Korea.

• Journal of Soil and Groundwater Environment
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• v.18 no.3
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• pp.11-22
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• 2013

SEAWAT, a linked modeling program of Visual MODFLOW was used to analyze the change in groundwater levels and salinity related groundwater dam construction in Cheongsan island, Wando-Gun, Jeollanam-Do. The steady-state model results show the groundwater flow and salinity distribution of the studied area. The groundwater flows from north-west and south-east highlands into the river, located in the middle part of the basin, and is eventually discharged to the ocean. Part of the sea water infiltrates into the river; and through the estuary's alluvium aquifer, the sea water intrusion takes place spreading to about 830 m from the ocean. The transient model results show that after the groundwater dam construction, groundwater levels will rise to a maximum of 2.0 m upstream, and the groundwater storage will increase 21,000 after 10 years. Meanwhile 31% of the total area affected by sea water intrusion will decrease. To conclude, the groundwater dam is a very useful method for a secure water resource in preparation for drought and water shortages in the island regions.

• Journal of fish pathology
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• v.20 no.1
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• pp.93-98
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• 2007

The prevalence of the scuticociliatosis in flounder farms of Jeju island was surveyed for ten years from 1995 to 2004. The occurrence ratio had maintained as less than 10% until mid 1990s, and shown increasing trends to year 1998. The ratio was equivalent to over 40% of overall disease occurrences in flounder farms since year 2000. The monthly infection rates by the scuticociliates indicated relatively higher levels from May to September, and mixed infection phenomena with bacterial disease of vibriosis were common.

• Korean Journal of Plant Resources
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• v.10 no.3
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• pp.271-273
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• 1997

This study was carried out to obtain basic envirinmental information of the native area and growth characteristics at different age of Dendropanax morbifera LEV. In the southern Korea. The Dendropanax morbifera LEV. Was grown naturally at Wando, Cheju(Mt. Halla), Yecheon(Kermoon island),Sinan(Hong isand), Jindo(Mt. Chermchill) and Haenam(Mt. Taeroon), all between 30 to 450m above the sea level. The soil characterisitics of the native area had a pH of 5.3 to 5.4 with 8.4 to 9.8% content of organic matter and 18.2 to 21.3% soil moisture. Flowering starting in the middle of July begun when the trees were 6 years old. Six year old trees are 129 cm in stem height, 34 mm in stem diameter,15.4 in number of leaves with petioles 12.9 cm long. Xylem sap can be obtained from over 10 year old trees that grew well and have over 10 cm stems in diameter.

• Journal of Species Research
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• v.11 no.3
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• pp.202-207
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• 2022

Three species of Choreutidae, Choreutis atrosignata (Christoph, 1888), Choreutis japonica (Zeller, 1877), and Litobrenthia japonica (Issiki, 1930), are reported for the first time from Korea. The records of C. atrosignata and C. japonica are based on two females from Yeongwol, Gangwon Province and from the Island Chujado, Jeju Province, respectively. The latter species was obtained from two larvae collected on the leaves of Ficus erecta (Moraceae). Photographs and data of rearing the larvae are provided. The record of L. japonica was based on two specimens collected from the Islands, Bogildo and Wando, Jeollanam Province. The present data of L. japonica represent the first record of the subfamily Brenthiinae and the genus Litobrenthia from Korea. Distributions of two species C. japonica and L. japonica, previously known only from Japan, now extends to Korea. Habitus and genitalia of the species treated here are briefly described and illustrated, if possible. To sum up, the Korean Choreutidae comprises four genera and 10 species, nine in Choreutinae and one in Brenthiinae.

• Journal of Korean Port Research
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• v.5 no.2
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• pp.3-10
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• 1991

Although Korea has had a proud maritime history of thousands of years marked by outstanding leaders such as Chang Bogo and Yi Soon-shin there has not been a unified 'Ocean Day' like the one in Japan. Extensive historical survey revealed eight candidate days for ocean day designation. Historical significance, seasonal consideration and other factors were examined with respect to each candidate date. Of the eight events the establishment of Chunghaejin maritime base on the island of Wando on the southern coast of Korea by Admiral Changbogo in the lunar month of April in the year of 828 is judged to have the greatest desirability Institution of 'Ocean Day' is recommended with the date to celebrate as May 20(a convenient date of May as translated into solar month). A weeklong celebration throughout the country is also recommended with colorful events to be had over the Ocean Week following the Ocean Day.

• The Korean Journal of Quaternary Research
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• v.17 no.2
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• pp.117-122
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• 2003

This study is conducted to examine the woods that were excavated at Jangdo Island. The Jangdo site is located in a small island some 180 meters away from the main island of Wando, Jeollanam-do in southern Korea. This site is known as Cheong-Hea Jin fort for the marine King Jang Bogo during the early 9$^{th}$ century. Total of 101 specimens were collected in three groups； small-size piles, log fences (Mok-check) and logs from a well. The species of the group of piles consisted of Quercus spp. (43%), Pinus densiflora (29%), Pinus koraiensis (5%), Alnus japonica (3%), Fraxinus spp. (3%), Styrax obassia (3%), Juglans spp. (2%), Zelkova serrata (2%), Platycarya strobilacea (2%), Celtis spp. (2%), Torreya nucifera (2%), Quercus myrsinaefolia (2%), and Cinnamomum spp. (2%). The species of Mok-check and logs from the well were identified as all Pinus densiflora. The species composition indicated that the climate around A. D. 9th-10th century in southern Korea was similar to the present.. The wooden fences were also examined for tree-ring analysis. The ages of woods were 50∼60 years. We made two site chronologies. The chronologies indicated that southeastern and southwestern fences were repaired frequently. The results could not give the absolute dates due to lack of reference chronologies in this period.

• Parasites, Hosts and Diseases
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• v.55 no.3
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• pp.347-350
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• 2017

An epidemiological study was performed to know the recent infection status of Paragonimus westermani metacercariae (PwMc) in freshwater crayfish, Cambaroides similis, from 2 streams in Jeollanam-do, Republic of Korea. Crayfish were collected from creeks in Bogil-do (Island), Wando-gun, and in a creek near Daeheung Temple in Haenam-gun. The infection rate of crayfish with PwMc in Bogil-do was 89.8%, and the metacercarial burden was 37 PwMc per the infected crayfish. Crayfish in a creek near Daeheung Temple were larger and twice heavier than those in Bogil-do. Of them, 96.5% were infected with PwMc. An average of 140 metacercariae was found in the infected crayfish, almost quadruple to those of Bogil-do. There was a strong correlation between the number of PwMc and body weight of the crayfish. These results suggest that P. westermani metacercariae are still prevalent in crayfish of the 2 regions in Jeollanam-do, Korea.