• Korean Journal of Environmental Biology
• /
• v.41 no.4
• /
• pp.530-538
• /
• 2023

This study conducted an investigation into the effects of fruit type and cultivation practices (organic and conventional) on soil characteristics and soil arthropod communities within apple, blueberry, grape, peach, and pear orchards. The collection of soil arthropod communities was achieved through the utilization of pitfall traps, with concurrent measurements taken for soil moisture content, electrical conductivity, and temperature. The findings of this study unveiled substantial impacts attributed to fruit type and cultivation practices on soil characteristics. Specifically, within organic apple orchards, discernibly higher levels of soil moisture content, electrical conductivity, and temperature were observed when compared to their conventional counterparts. The investigation into soil arthropod communities yielded a total of 1,527 individuals, classified in to five phyla and 15 orders. The range of abundance, species richness, and diversity indices varied across conventional and organic orchards. Cultivation practices were found not to exert a significant influence on soil arthropod community characteristics. However, Non-metric Multidimensional Scaling (NMDS) analysis indicated a significant differentiation in soil arthropod community structure based on cultivation practices. This study underscores the importance of considering vegetation structure and environmental characteristics that may influence soil arthropod communities comprehensively when assessing the impact of cultivation practices on soil arthropods. Furthermore, it emphasizes the need to account for both the characteristics and structure of soil arthropod communities in understanding the implications of cultivation practices on these organisms.

• The Korean Journal of Soil Zoology
• /
• v.1 no.1
• /
• pp.48-55
• /
• 1996

This study was carried out to investigate the arthropod fauna at tangerine orchards in Cheju-do island. To fulfil this purpose, samples were taken at 21 areas from the Cheju-do island 1985 to 1989. During this period, 33 species were identified, thus making 217 species, 99 genera, 31 families of spiders recorded from this island, In tangerine orchards alone, 26 species of spiders were found.

• Proceedings of the Korean Society of Soil Zoology Conference
• /
• 2001.10a
• /
• pp.1-2
• /
• 2001

• Mycobiology
• /
• v.50 no.4
• /
• pp.189-202
• /
• 2022

An investigation of species of the genus Aspergillus present in arthropod, freshwater, and soil led to the discovery of seven undescribed species in Korea. Based on their morphological characteristics and molecular phylogeny analyses using a combined data set of β-tubulin (BenA) and calmodulin (CaM) sequences, the isolated strains CNUFC IGS2-5, CNUFC YJ1-19, CNUFC WD27, CNUFC U8-70, CNUFC AS2-24, CNUFC S32-1, and CNUFC U7-48, were identified as Aspergillus brunneoviolaceus, A. capensis, A. floccosus, A. inflatus, A. parvulus, A. polyporicola, and A. spelaeus, respectively. In the present study, the detailed morphological descriptions and phylogenetic relationships of these species are provided.

• The Korean Journal of Soil Zoology
• /
• v.4 no.2
• /
• pp.75-80
• /
• 1999

Two years-study with litter bag (mesh size : 0.4 mm, 1.7 m) was carried out from Nov., 1996 to Sept., 1998 to investigate the soil microarthropod community in the process of needle leaf secomposition of Korean pine (Pinus koraiensis) forest in Namsan and Kwangreung, where were supposed to be under different environmental selective pressures. Soil arthropoda collected from litter bags were sorted into suborders or higher taxa. Acari and Collembola were dominant groups, which were 61-68% and 27-35% of total soil arthropod in their numbers, respectively. Among Acari, Oribatida was major group, and Gamasida and Actinedida were minor groups. Abundance of Acari was a little higher in Kwangreng than in Namsan. But there was not significant difference between the arthropod community structure of Namsan and Kwangreng forest. And the different mesh sizes (0.4 mm and 1.7 mm) of litter bags could not make significantly different community structures in the litter bags. One taxon showed different pattern of population dynalics from another. But Oribatida, Gamasida and Collembola showed peak density in July, 1997. All taxa showed lower population densities in cold season i.e. Nov., Jan. and March. There was not significant difference in decomposition rate between Namsan and Kwangreng forest, and between mesh sizes of litter bags. % residual mass of needle leaf was about 40% at 22 months after litter fall.

• The Korean Journal of Ecology
• /
• v.12 no.3
• /
• pp.183-190
• /
• 1989

This study was carried out to investigate the population density and biomass of soil microarthropods in the forests with different flora. soil microarthropods of 29,475 individuals were identified into 6 different classes, and 18 different orders. Acarina were the most numerous with abundance of 74.8% followed by 17.9% of Collembola, comprising 92.7% of arthropod fauna. Similar dominance of the two groups was found also in biomass although the level reaching no more than 63.9%. The A/C ratio in the broad-leaved forests are higher than that in the coniferous forests.

• Journal of Korean Society of Rural Planning
• /
• v.2 no.2
• /
• pp.91-102
• /
• 1996

Monitoring techniques for afro-ecological environments were studied, Hydrologic and ecological components in conjunction with water quality were monitored in the Balkan watershed. The hydrologic monitoring program consists of four water level gauging stations along creeks and stream at the watershed having 26.5 km2. Stage - storage relationship of reservoir, rainfall amount of the watershed, and rating curve of the stream gauging stations were established. Soil type, land use, hydrologic soil group, population and economic activities within the watershed were surveyed. Water quality data from the streams were sampled weekly and chemical analysis was conducted. Temporal variations of water quality were investigated and water quality map of each reach of stream was made to identify spatial variations. Seasonal and spatial variations of vegetation densities along stream in the watershed were investigated using grid, Density variations of insect species such as arthropod, flying insect, spider spices, rice insects were also monitored to determine seansonal surveying density. These monitored data will be used to develop monitoring techi%ues and afro - ecological environment models.

• Journal of Species Research
• /
• v.8 no.2
• /
• pp.233-237
• /
• 2019

Mites in the family Veigaiidae, order Mesostigmata, subclass Acari are widely distributed in subsoil habitats. They are mostly free-living and predaceous on small arthropod eggs and larvae, and prefer habitats with rich organic matters including litter and humus layers of forest soil. The genus Veigaia Oudemans, 1905 of the family Veigaiidae (Acari: Mesostigmata) is one of the ubiquitous genera from the Holarctic Region. Until now, only two genera and five species of the family were recorded from Korea. Here we provide a report of the species Veigaia tibbetsi Farrier, 1957 with detailed redescription. Even though V. tibbetsi had appeared in some ecological literature, this is the first record of this species in Republic of Korea. This species was mostly found from pine forest(Pinus densiflora) of northeastern mountainous parts of the Korean Peninsula, in Gangwon and Gyeongbuk Provinces. We provided some ecological characteristics of the family Veigaiidae, which will help to further exploration of acarine biodiversity.

• 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.

• Korean Journal of Veterinary Service
• /
• v.45 no.1
• /
• pp.13-18
• /
• 2022

African swine fever (ASF) is fatal to domestic pigs and wild boars (Sus scrofa) and affects the domestic pig industry. ASF is transmitted directly through the secretions of infected domestic pigs or wild boars, an essential source of infection in disease transmission. ASFV is also very stable in the environment. Thus, the virus is detected in the surrounding environment where ASF-infected carcasses are found. In this study, ASF infection monitoring was conducted on the swab and whole blood samples from wild animals, various hematopoietic arthropod samples that could access infected wild boar carcasses or habitats to cause maintenance and spread of disease, and soil samples of wild boar habitats. ASF viral DNA detection was confirmed negative in 317 wildlife and environmental samples through a real-time polymerase chain reaction. However, ASF occurs in the wild boars and spreads throughout the Korean peninsula. Therefore, it is necessary to trace the route of ASF virus infection by a continuous vector. Additional monitoring of various samples with potential ASF infection is needed to help the epidemiologic investigation and disease prevention.