• Journal of Radiation Protection and Research
• /
• v.45 no.1
• /
• pp.16-25
• /
• 2020

Background: To investigate radiological effects on biota, it is necessary to assess radiation dose for flora and fauna living in a terrestrial ecosystem. This paper presents a dynamic model to assess radioactivity concentration and radiation dose of terrestrial flora and fauna after a nuclear accident. Materials and Methods: Litter, organic soil, mineral soil, trees, wild crops, herbivores, omnivores, and carnivores are considered the major components of a terrestrial ecosystem. The model considers the physicochemical and biological processes of interception, weathering, decomposition of litter, percolation, root uptake, leaching, radioactive decay, and biological loss of animals. The predictive capability of the model was investigated by comparison of its predictions with field data for biota measured in the Fukushima forest area after the Fukushima nuclear accident. Results and Discussion: The predicted radioactive cesium inventories for trees agreed well with those for evergreens and deciduous trees sampled in the Fukushima area. The predicted temporal radioactivity concentrations for animals were within the range of the measured radioactivity concentrations of deer, wild boars, and black bears. The radiation dose for the animals were, for the whole simulation time, estimated to be much smaller than the lower limit (0.1 mGy·d^-1) of the derived consideration reference level given by the International Commission on Radiological Protection for terrestrial flora and fauna. This suggested that the radiation effect of the accident on the biota in the Fukushima forest would be insignificant. Conclusion: The present dynamic model can be used effectively to investigate the radiological risk to terrestrial ecosystems following a nuclear accident.

• The Korean Journal of Soil Zoology
• /
• v.3 no.1
• /
• pp.1-9
• /
• 1998

Herein, 19 species of the ground beetles are reported from Korea. Of these, 3 species, Bembidion shimoyamai Habu, 1978, Pogonus itoshimaensis Habu, 1954, and Tachys fumigatus Motschulsky, 1851 are recorded for the first time from Korean peninsula.

• The Korean Journal of Soil Zoology
• /
• v.3 no.1
• /
• pp.42-49
• /
• 1998

In this list, a total of 149 species balonging to 109 genera under 61 families of oribatid mites were contained to the fauna of Mt. Jiri.

• The Korean Journal of Soil Zoology
• /
• v.2 no.1
• /
• pp.19-28
• /
• 1997

A total of 27 species of Carabidae from Korea is listed. Of these, 9 species, Badister ussuriensis, Bembidion aurefuscum, Bradycellus anchomenoides, Desera geniculata, Diplocheila elongata, Harpalus quadripunctatus, Odacantha aegrote, Trichotichnus longitarsis, and Trichotichnus nishioi are reported for the first time from Korea.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
• /
• 2003.09a
• /
• pp.235-239
• /
• 2003

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
• /
• 2003.09a
• /
• pp.240-243
• /
• 2003

• The Korean Journal of Ecology
• /
• v.19 no.3
• /
• pp.251-260
• /
• 1996

The effect of forest fire on soil microarthropod fauna was investigated in the Inhoo Park, located at Deokjin-gu, Chonju city, where fire burned about 2 hectares on April 5, 1994. Vegetation of the area was covered with mixed forest such as 20 to 30 year old black locust, alder, and pine gree, etc., and also rich in understory plants, dead leaves, twigs, etc. The soil samples were taken from burnt soil and near-by control site on April 10, June 6 and Oct. 22 in 1994, and June 26, 1995. Soil microarthropods were extracted using Tullgren apparatus for 72 hours. Soil microarthropods collected in this experiment were 8, 013 at control and 3, 805 at the burnt site making a total of 11, 818 from 5 classes. Therefore, appearance of microarthropods was reduced to 52.5% at burnt site. Dominant animal groups were Acari (45%) and collembola (46%). The reduced rate of soil animal density by fire damage was 52.5% of the total soil microarthropods accounting 36% in Acari and 70% in collembola. The reduction of soil animal density by fire was 65.3% by habitat destruction and 51.7% by diret shock from fire heat. In Collembola, 89% was reduced by habitat destruction. Oribatid mites collected at sample plots included 29 families, 47 genera and 58 species. Forty-two species at burnt site and 47 species at unburnt site were identified, of these 32 being common species at both sites. The density ratio of soil animals at the burnt sites and those at unburnt sites was 38.6% va 61.4% resulting in 37% reduction due to fire. The dominant species with more than 5% in relative density were Trichogalumna nipponica (7.3%) and Eremobelba japonica (5.8%) at unburnt site, shereas 5 species including Eohypochthonius crassisetiger (8.5%) at the burnt site. The number of these species were 32.1% of total number. MGP analysis based on the number of oribatid mites indicated GP type at both unburnt and burnt sites, revealing domination of the P group in oribatid mites.

• Journal of Species Research
• /
• v.4 no.1
• /
• pp.33-44
• /
• 2015

A total of 34 species belonging to 11 families and 21 genera in the Order Mestostigmata are reported from the Korean Peninsula, of which 20/34 species are new for the fauna of the Korean Peninsula (Lasioseius furcisetus Athias-Henriot, 1959, Cheiroseius nepalensis Evans & Hyatt, 1960, Cheiroseius curtipes (Halbert, 1923), Hypoaspis imitatus Reitblat, 1963, Hypoaspis presternalis Willmann, 1949, Hypoaspis kargi Costa, 1968, Pseudoparasitus placentulus (Berlese, 1887), Gamasiphis novipulchellus Ma & Yin, 1998, Parholaspulus bregetovaae Alexandrov, 1965, Parholaspulus paradichaetes Petrova, 1967, Neparholaspis arcuatus Petrova, 1977, Neparholaspus simplex Evans, 1956, Parholaspulus excentricus Petrova, 1967, Gamasholapis asiaticus Petrova, 1967, Veigaia carpillaris Tseng, 1994, Veigaia anmashanensis Tseng, 1994, Leptogamasus bicorniger Witalinski, 1977, Neogamasus insignis (Holzman, 1969), Iphidinychus kakumeiensis Hiramatsu & Hirschmann, 1992, Trigonuropoda sanguinea Hirschmann & Hiramatsu, 1977). A total of 19 of the previously unreported species were collected in soil samples from the Democratic People's Republic of Korea (DPRK), while 13 species were collected from soil samples from the Republic of Korea (ROK). Only two species were found in both the DPRK and the ROK. Illustrations and short descriptions for previously unreported species provided.

• Korean journal of applied entomology
• /
• v.28 no.4
• /
• pp.210-220
• /
• 1989

Studies on the distribution pattern of soil arthropods were carried in H.J. Andrews Expt. Forest. Forty-one species of Coleoptera in 14 families were recognized as the dominant group. Also, 7 species of soil mites in 6 families, Typhlodromus, Gymnodaeus, Phauloppia and Scleroribates were recognized without seasonal fluctuation, which made the difference to the outbreak pattern of the Palearctic region. Another species as 16 species of Collembola in 4, families, 16 species of Thysanoptera in 3 families, 10 species of Hymenoptera in 1 family, and 7 species of Acarina in 6 families were recognized. The result showed the importance of the soil arthropod as the primary decomposer in forest ecosystem and the relationship between species diversity and soil condition.

• The Korean Journal of Ecology
• /
• v.12 no.3
• /
• pp.203-208
• /
• 1989

This study was objected to figure out the soil microarthropod fauna in forests with different flora, and to elucidate how environmental factors affect the diversity of soil microarthropods. Relationships between the distribution density of soil microarthropods and environmental factors were correlated positively with organic matter and C/N ratio. By the calculation of the contribution coefficients, organic matter, amount of precipitation, C/N ratio, and soil moisture were found to be major environmental factors that affect the distribution of soil microarthropods.