• Animal Systematics, Evolution and Diversity
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• v.7 no.1
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• pp.13-38
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• 1991

This study on the five families (Anamixidae, Colomastigidae, Eophliantidae, Eusiridae, and Hyalidae) of fammaridean amphipods of Ulreung Island was based on the materials collected at eight localities in Ulreung Island. Nine speices of seven genera were identified. Of these, three (Paranamixis denticulus, Colomastix prionotos, and Hyale bisaeta) were new to science. Three species (Ceinina japonica, Eusiroides monoculoides japonicus, and Allorchestes angusta) were new recordsfor Korean waters. These six species were descirbed with illustrations.

• The Korean Journal of Zoology
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• v.34 no.2
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• pp.232-252
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• 1991

This study on the four families (Ampithoidae, Corophiidae, Dulichlldae, and lschyroceridae) of amphipods of Ulreung Island was based on the materials collected at eight localities in Ulreung Island. Eleven species of nine genera in four familles were identified. Of these, four (Sunamphithoe sineplumosa, Podocerus ulreungensis, P. hoonsool, and Ventojassa dentipal ma) were new to science. All eleven species were new records for Ulreung Island. Six species were described and illustrated. The keys to all eleven species and higher taxa were provided.

• The Korean Journal of Zoology
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• v.37 no.2
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• pp.262-266
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• 1994

The three species, Synolpheus tumidomanus, Spirontocaris orcuota, Heptacarpus futilirostris, are added to the shrimp fauna of the Ulreung Island.S. turn idomanus was reported one time in Korean waters without redescription, and the present report is the second. Heptocawus futilirostris is newly recorded from the East Sea in Korean waters. With the five previously known species, the total eight species are listed and 5. tumidomanus is redescribed.

• The Korean Journal of Zoology
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• v.34 no.3
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• pp.323-337
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• 1991

This study on the four families (Leucothoidae, Melitidae, Pleustidae, and Stenothoidae) of gammaridean and the one family (Caprellidae) of caprellidean amphipods of Ulreung Island was based on the materials collected at eight localities in Ulreung Island. Ten species of six genera were identified. Of these, he (Elasmopus korrunus, and Muero breuispina) are new to science. Four species (Leucothoe nogotoi, 1. spinicawa, Paropleustes denhouini, and Stenothoe volido) are new records for Korean craters. Five species were described and six Lvere illustrated.

• Korean journal of applied entomology
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• v.20 no.1 s.46
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• pp.51-58
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• 1981

Hitherto 44 species belonging to 19 families of spiders have been reported at Ulreung-do on the East Sea. Korea. The authors have investigated spider fauna, through out the Ulreung-do, during July 25, August 3. 1975 and July 30, August 7, 1980. The foundings were as followings. 1) In this report, 132 species of 74 genera, including 3 undetermined species, belonging to 25 families of spiders are tabulated by the aid of published data and collections of the authors. Eighty six species are added to the fauna, of which 2 species are new to Korea. as follows; Porrhomma montanum Jackson. 1918, Clubiona neglecta O.P. Cambridge, 1862. The spider fauna of Ulreung-do includes 18 nothern species $(14.0\%)$, 8 southern species $(6.2\%)$. 7 cosmopolitan species $(5.4\%)$ and 84 Palaearctic temperate species $(65.1\%)$. The predominant species are Araneids. Thridiids, especially Cyclosa japonica Boes. et Str. are found in large numbers all over this island. Linyphiids and Lycosids are relatively few in number. 3) The common species to comparative area and foreign countries are as follows; Ulreung-do/Jookbyeon...76 species$(43.3\%)$ Ulreung-do/Jeju-do...95 species$(40.6\%)$ Ulreung-do/Heuksan do...61 species$(35.7\%)$ Ulreung-do/Deogjeog-do...51 species$(31.7\%)$ Ulreung-do/Tsushima Isl....71 species$(30.3\%)$ Ulreung-do/Japan...112 species$(11.3\%)$ Ulreung-do/main China...59 species $(6.5\%)$ 4) The ecological distribution are as follows; The seashore region...81 species$(62.8\%)$ The evergreens region...73 species$(56.6\%)$ The highiands region...64 species$(49.6\%)$ The valleys region...49 species$(38.0\%)$ The basin region...23 species$(17.8\%)$ 5) The noticeable one of geographical distribution in this island, are as follows; Nesticus quelpartensis Paik et Namkung, 1969, Conoculus simboggulensis Paik, 1971.

• Economic and Environmental Geology
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• v.13 no.2
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• pp.80-90
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• 1980

A geologic disasters in Ulreung-island is forming along the slope of pyroclastic, deposits and this paper discusses soil mechanics and properties and morphologies of pyroclastic soil. The typers of degradation are determined by cutting the soil and classified genetically. Finally, the range of stability is deduced from dip of slope (${\alpha}$) and lengh of slope (l) as the following;.

• The Korean Journal of Zoology
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• v.35 no.2
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• pp.256-261
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• 1992

The eight species, Cwptodromio tumida, Scyra compressipes, Chionoecetes opilio, kchoeus ioponicus, Hali'cavcn'nus orientalis, Ponunus gladiator, Neoliomero insufaris, Pinnotherrs sinensis, are added to the brachvuran fauna of the Ulreuns and Dogdo Islands. One of eight species, Hulicarcinus orientalis, is new to Korean waters. With the previously known 20 species from these areas, the total 28 species are listed and one unrecorded species is described.

• The Korean Journal of Zoology
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• v.36 no.3
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• pp.391-401
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• 1993

The eight species, Axiopsis (Axiopsis) princeps, Petrolisthes japonicus, Pachycheles stevensii, Paguristes acanthomerus, P. japonicus, Elassochirus cavimanus, Pagurus Japonicus, P. trigonocheirus, are added to the thalassinidean and anomuran fauna of the areas of the Ulreung and Dogdo Islands. With the previously reported 10 species from these areas, the total 18 spedes are listed and an illustrated key is provided.

• Journal of Plant Biology
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• v.29 no.1
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• pp.53-65
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• 1986

The montane forests of Ulreung Island, Korea, were investigated by the ZM school method. By comparing the montane forests of this island with those of Korean Peninsula and of Japan, a new order, F a g e t a l i a m u l t i n e r v i s, a new alliance, F a l g i o n m u l t i n e r v i s, a new association, H e p a t i c o-F a g e t u m m u l t i n e r v i s and Rhododendron brachycarpum-Pinus parviflora community were recognized. The H e p a t i c o - F a g e t u m m u l t i n e r v i s was further subdivided into four subassociations; Subass. of Sasa kurilensis, Subass. of Rumohra standishii, Subass. of Rhododendron brachycarpum and Subass. of typicum. Each community was described in terms of floristic, structural and environmental features.

• The Korean Journal of Mycology
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• v.13 no.1
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• pp.49-51
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• 1985

Mycoplasma-like organisms (MLO) were identified from three plants. The disease symptoms show stunting, yellowing and witche's broom on Cnidium officinale Makino collected from Ulreung Island, Bupleurum falcatum L. collected from Jangsu, and Plantago asiatica L. collected from Daegwanreung. The particles of MLO were observed in the phloem tissues by a Hitachi Hu-11E electron microscope. C. officinale infected with MLO was frequently observed in Ulreung Island.