초식, 포식, 분해 등 생태학적 서비스를 제공하는 지표 배회성 절지동물은 사과원의 중요한 구성 요소이며, 이들의 군집에 영향을 미치는 잡초는 유기재배와 관행재배 사과원에서 다르게 관리된다. 잡초 관리와 관련된 과수원 관리가 지표 배회성 절지동물의 풍부도와 다양도에 미치는 영향을 평가하기 위해 3년간 연구를 수행하였다. 대부분의 절지동물은 상위분류군과 섭식 기능군으로 분류하였으며, 딱정벌레류는 종 수준으로 분류하였다. 지표 배회성 절지동물의 주요 우점군은 딱정벌레목으로 나타났다. 초식자와 포식자의 풍부도는 유기재배 사과원에서 높은 결과를 보였으며, 딱정벌레류의 풍부도와 다양도 또한 관행재배 과원보다 유기재배 사과원에서 높은 결과를 보였다. 거미목, 딱정벌레목 또는 딱정벌레류의 풍부도는 잡초 관리 빈도와 음의 상관관계를 보였다. 지표 배회성 절지동물은 농업 시스템보다 잡초 관리에 영향을 더 많이 받는 것으로 나타났다.

본 연구에서는 CH4/CO2 혼합가스에서 CO2 분리를 위해 세라믹 중공사 접촉막 모듈(HFMC)을 이용하여 실험을 수행하였다. 고 내구성의 HFMC를 제작하기 위해, 고강도의 중공사막을 제조하여 평가하였다. 제조한 중공사막을 이용하여 HFMC를 제작하였고, 실험은 CH4/CO2 혼합 기체(30% CO2, CH4 balance)와 monoethanolamine (MEA)를 사용하였다. HFMC 운전 중 기체와 흡수제의 압력이 CO2 제거 효율에 어떠한 영향을 주는지 평가하였다. CO2 제거 효율은 기체압력이 증가함에 따라 같이 상승하였으며, CO2 흡수 flux 또한 액체유량과 함께 증가하는 추세를 보였다. 또한 CO2 흡수율이 40% 이하일 때 는 흡수제가 아래쪽에서 들어가는 향류형태인 LTS-1이 흡수제가 위쪽에서 들어가는 향류형태인 LTS-2보다 CO2 제거 성능 이 높았으며, 흡수율이 40% 이상일 때는 LTS-2가 LTS-1보다 성능이 높았다.

The genus of Gustavia Kramer, 1879 comprises 16 species are collectively distributed in the worldwide. Only one species, Gustavia microcephala Nicolet, 1855 has been recorded in Korea. We found a new species, Gustavia aominensis Fujikawa, 2008 to Korean inventory from the litter and soil samples of Sasa borealis at Cheong-ok mountain natural recreation forest. A diagnostic description of this species with detailed illustration and data on its geographical distribution are presented.

The genus Peloribates is comparatively species rich, and world-wide, more than eighty species are assigned to this genus (Bayartogtokh, 2000). In Korea, four species of Peloribates were recorded. In this study, Peloribates barbatus Aoki is reported from Korea for the first time. This species was collected from rice straw mat of Cherry tree in Andong National University. We present the morphology of this species relative to body size, length, shape of sensillus, position of seta, and feeding comparing with previously recorded four species of Peloribates. A diagnostic description of this species with detailed illustration.

Soil biodiversity is important for proper functioning of soil ecosystem. Soil microarthropods play roles in cycling of nutrients and decomposition of organic matter. We compared the diversity of oribatid mites in organically and conventionally managed apple orchards. Sampling were done from 10 orchards; 5 from organic and 5 from conventional, in spring season of 2011 and 2012. Species richness and abundance were higher in conventional (25, 4,222/m2) than organic orchard (21, 1,906/m2). Diversity index was higher in conventional than organic orchard. Common dominant species present in orchards were Perglumna duplicata nipponica and Scheloribates latipes. Only observed in apple orchards were Pilogalumna tenuiclava, Protoribates agricola, Hypochthonius luteus, Punctoribates manzanoensis, Punctoribates sphaericus, and Scheloribates corpusculum. In organic orchard, Suctobelbella naginata and Tectocepheus cuspidentatus were only present. Pergalumna altera, Galumna longiporosa, and Protoribates lophotrichus, Galumna sp. were found only in conventionally managed apple orchard. Further study on the functional aspects and association with other soil biotic and abiotic factors are demanding.

From the soil samples collected at Seonginbong in Ulleung Island two unrecorded species of oribatid mite, Punctoribates hexagonus Berlese and Galumna cuneata Aoki were identified. Genus Punctoribates Berlese (1908) are rather small, dark brown, and ball-shaped as adults inhabiting mainly terrestrial ecosystem, but some species live in wet habitats and other mosses at the edge of lakes (Seniczak and Seniczak, 2008). The members of Galumnidae is one of the largest groups of oribatid mites with a world - wide distribution. They are ball-shaped, both the juvenile and adult stages. The sclerotized integument of adults are brown to black. Member of this family are fairly abundant in litter or upper layers of forest soils and commonly distributed in pasture soils of open habitats (Bayartogtokh and Weigmann, 2005). Soil samples were collected from five random samples at 5cm depth consisting of one sample unit. The abundances of soil microarthropods collected from acari and collembola were consisted of 31% and 32%, respectively. We collected 11 species, 9 families of oribatid mite (Acari: Oribatida) from the research site.

Community analysis of oribatid mites was conducted in unburned and burned area of Samcheok-si, Gangwon province with differential burn severity that occurred in April 2000. Except control site, four sites (T1, T2, T3 and C2) were selected according to burn severity and subsequent recovery following a year after fire form T1 (heavily burned) to Control (unburned). This study analyzes the abundance, species richness, diversity and evenness, similarity, dominant species, and MGP types of oribatid mites. Oribatid mites were sampled 8times from each site from 2005 to 2007. Total of 40 families, 58 genus, 123 species and 4,638 individuals were founded. Species richness and abundance of oribatid mites decreased as burn severity increased. Diversity index of control site was higher than all other sites and decreased as the burn severity increased. Similarity between control and C2 sites was highest among the sites and cluster analysis showed control and C2 as closely related followed by T3, T2 and T1 respectively. MGP-I analysis revealed oribatid mites of all sites as GP type. MGP-II analysis showed control as G type and all other sites as GP type.