• Solar Energy
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• v.2 no.1
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• pp.33-48
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• 1982

A planetary boundary layer model has been modified to study the feasibility of siting the wind energy conversion systems over Jejudo island. Our objective is to demonstrate a numerical model that is simple enough to be economical in terms of computational cost and contains most of the mesoscale processes occurring in the planetary boundary layer at the same time. Simulated fields of atmospheric parameters are compared favorably with available climatological data and interpreted in terms of physical phenomena occurring.

• Animal Systematics, Evolution and Diversity
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• v.25 no.1
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• pp.61-64
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• 2009

A new species Diplastrella yongmeoriensis n. sp. was collected from Jejudo Island, Korea in 2008. This new species is similar to D. bistellata (Schmidt, 1862) in growth form and skeletal structure but differs in the composition and size of spicules. The genus Diplastrella is reported for the first time in Korea.

• 보존과학연구
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• s.30
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• pp.203-215
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• 2009

In the conservation treatment of wood remains, polymers, treatment methods, and treatment period can be varied, depending on the percentage of moisture content and species of trees. Thus, in order to apply the appropriate conservation treatment, a lot of information from the wood remains are required. Despite the information from the wood remains, testing a part of the wood remains is necessary to get information about the polymers. When the wooden coffin made of camphor trees was excavated, it was cracked in the section of radiation, and there were hairlines cracks. Therefore, without any conservation treatment, it is impossible to restore it. This experiment is for the conservation treatment of the wooden coffin excavated from Songhyun-dong tombs No 7, Changnyeong. For this experiment, I used camphor trees from Jejudo. The purpose of this experiment is to asses the possibility of preliminary testing materials before the conservation treatment on the wooden coffin. After the camphor trees from Jejudo are artificially aged by Fenton's reagent, they are As a result of oxidation by Fenton, the degree of oxidation is high in proportion to the amount of peroxide and iron sulfate. Among several samples, the sample 'na' made the most similar result to the wooden coffin from Songhyun-dong. If I use this condition to make the sample in polymer tests, it is very helpful to find the most suitable polymer for the conservation treatment of wooden coffin. After the same species of trees are oxidized by Fenton and they become the similar condition, we are able to find suitable methods of conservation treatment. The suitable methods reduce the demage of the remains and make us to get more information. Thus, we are able to carry out conservation treatment more exactly.

• Korean Journal of Plant Taxonomy
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• v.48 no.1
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• pp.43-47
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• 2018

Pimpinella saxifraga L. (Scarlet pimpernel or Burnet saxifrage), a newly introduced species, was found from Baekyakyi oreum (a parasitic cone or cinder cone) in Seogwipo, Jejudo Island. This species is native to Europe and western Asia and is reported as a widely invasive species around the world. Pimpinella saxifraga is distinguished from other related Korean taxa by leaves that are pinnately compound with 3-7 pairs of segments, which vary from simple, ovate, to 2-pinnatisect, with linear lobes. The vernacular name of "Baek-yak-yi-cham-na-mul" was assigned after the name of the cinder cone where it was initially discovered. We provide descriptions of the morphological characters, photographs and a key to allied taxa in Korea. The geographical origin and introduction routes are unknown, but it is highly likely that it was introduced as fodder given its high nutritious value for sheep and cattle or as a medicinal herb. This species invades commonly grasslands and woodlands and prefers dry, well-drained, and calcareous soils. The distribution of this species was analyzed by searching extensively in surrounding Baekyakyi oreum and adjacent cinder cones, but no other populations were observed. It is protected commonly at the edges or inside of the patchy pine forest in the cinder cone from grazing by cattle; given the worldwide invasive nature of this species, special monitoring and management plans should be developed.

• Animal Systematics, Evolution and Diversity
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• v.23 no.1
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• pp.103-105
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• 2007

A taxonomic study on Hoplophrys oatesii Henderson, 1893 was conducted with materials collected from Jejudo Island of Korea by SCUBA diving. H. oatesii is redescribed with some remarks on variations of dactylus and the number of segments of abdomen. The Korean Pisid fauna now consists of seven species of five genera.

• Animal Systematics, Evolution and Diversity
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• v.26 no.1
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• pp.75-78
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• 2010

A new marine sponge Cinachyrella unjinensis n. sp. has been collected from Jejudo Island in 2009. This new species is similar to C. kuekenthali (Uliczka, 1929) in the shape and composition of the spicules except for style. However, it differs from the latter by size of anatriaenes, protriaenes and microxeas.

• Animal Systematics, Evolution and Diversity
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• v.27 no.2
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• pp.197-200
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• 2011

Tunicates were collected from three harbors (Gampo, Bangeojin, Daebyeon) in Gyeongsangnam-do and one harbor (Seogwipo) in Jejudo Island during the period from August 2008 to January 2011 and were identified on the basis of their morphological characteristics. Among them, colonial tunicate Clavelina lepadiformis (Muller, 1776) belonging to the family Clavelinidae was found to be an invasive alien species introduced from the North Atlantic, and this is the first record of its occurrence in Korea.

• Animal Systematics, Evolution and Diversity
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• v.24 no.2
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• pp.151-153
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• 2008

A female crab of Xenocarcinus conicus (A. Milne Edwards, 1865) was collected from Munseum, Jejudo Island. The genus Xenocarcinus is recorded newly in Korean brachyuran fauna. The present specimen has broader and shorter rostrum and eleven sharp teeth on the inner border of dactylus of the first ambulatory leg. Korean epialtid fauna now consists of eight species of four genera.

• Animal Systematics, Evolution and Diversity
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• v.25 no.1
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• pp.81-85
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• 2009

Some hydroid specimens were collected from 10-14 m deep of Munseom (Jejudo Is.) on 22 June 2007, and from 20-25 m deep of Nagokkkottdongsan (Uljin) on 10 Jan. 2008 by SCUBA diving. Among the identified species, the following three species, Solanderia spinosa (Carter, 1892), Lafoea dumosa (Fleming, 1828) and Rhizocaulus verticillatus (Linnaeus, 1758) were turned out to be new to the Korean fauna.

• Journal of Environmental Science International
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• v.19 no.4
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• pp.491-507
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• 2010

This study focuses on the fauna, seasonal prevalence and altitudinal distribution of the flies from March to November, 2008 in Mt. Hallasan, Jejudo Island, Korea. The fauna of flies was 39 species belonging to 5 Families which consist of 12 Calliphoridae, 19 Muscidae, 5 Sarcophagidae, 1 Dryomyzidae 1, Scathophagidae and 1 Anthomyiidae. The total number of flies collected was 21,605 with sex ratio of 57.98% in Mt. Halla. The ratio is higher than that of the residential area and other mountain survey sites. The average number of per trap individuals collected on the trapping day is 267, which is similar with the average of Mts. Jiryong, Juwang, Palgong and Gumo. The five dominant species showed a distinctive seasonal prevalence of 92.6% of the total flies: Chrysomyia pinguis (34.2%), Calliphora lata (25.3%), Hydrotaea dentipes(23.1%), Fannia scalaris (5.1%), and Lucilia caesar (4.9%). The seasonal prevalence of the flies was from the beginning of March to the end of November, and the highest peak time of the whole flies, males and females were different respectively. In the similarity index of the flies collected in different altitude, that of between 1,000 meters and 1,500 meters was the highest among the indices of 500 meters and above 1,000 meters. The index at each altitude was above 80% because of the same area. The diversity index of fly species was between 0.00 and 0.88 through altitudinal traps monthly. The highest index in Trap 1 was 0.88 in October, in Trap 2, 0.82 in July and in Trap 3, 0.63 in July. The diversity above 1,000 meters was most various in July. The five dominant species of C. pinguis, C. lata, H dentipes, F. scalaris, and L. caesar showed distinctive seasonal prevalence, relative abundance and altitudinal distribution respectively.