Journal of Microbiology

Research Support, Non-U.S. Gov'ts

Studies on seasonal dynamics of soil-higher fungal communities in Mongolian oak-dominant Gwangneung forest in Korea: Chang Sun Kim , Jong Woo Nam , Jong Won Jo , Sang-Yong Kim , Jae-Gu Han , Min Woo Hyun , Gi-Ho Sung , Sang-Kuk Han; J. Microbiol. 2016;54(1):14-22. Published online January 5, 2016; DOI: https://doi.org/10.1007/s12275-016-5521-1

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We surveyed macrofungi biweekly at defined plots from April to December in 2014, in the Mongolian oak-dominant forest, Gwangneung Forest, Pochen-si, Korea, and analyzed a soilhigher fungal diversity during four seasons (represented by April, August, October, and December). Based on morphological observation of collected specimens, the collected macrofungi were classified into 2 phyla 3 classes 7 orders, 14 families, 21 genera, and 33 species (36 specimens). DNA-based community analyses indicated that soil-higher fungi were classified into 2 phyla, 18 classes, 49 orders, 101 families, and 155 genera (83,360 sequence reads), defined herein as 155 genus-level operational taxonomic units (GOTUs). In the present study, we evaluated and discussed the fungal diversity in seasonal dynamics and soil layers based on collected macrofungi and pyrosequencing data while considering environmental parameters (pH, exchangeable K, T-P, NH4+, NO3-, OM, WR, TOC, and T-N). Moreover, principal components analysis (PCA) showed distinct clusters of the GOTU assemblage associated with the seasons.

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Diversity and species distribution of lichens in Gwangneung Forest
Jung Shin Park, En-Mi Sun, Jung-Jae Woo, Sang-Kuk Han, Soon-Ok Oh
Journal of Asia-Pacific Biodiversity.2022; 15(4): 613. CrossRef
Statistical Evidence for Managing Forest Density in Consideration of Natural Volatile Organic Compounds
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Immediate and legacy effects of snow exclusion on soil fungal diversity and community composition
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Seasonal Abundance and Distribution of Vibrio Species in the Treated Effluents of Wastewater Treatment Facilities in Suburban and Urban Communities of Eastern Cape Province, South Africa: Etinosa O. Igbinosa , Chikwelu L. Obi , Anthony I. Okoh; J. Microbiol. 2011;49(2):224-232. Published online May 3, 2011; DOI: https://doi.org/10.1007/s12275-011-0227-x

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Abstract: We assessed the seasonal abundance and distribution of Vibrio species as well as some selected environmental parameters in the treated effluents of two wastewater treatment plants (WWTP), one each located in a suburban and urban community of Eastern Cape Province, South Africa. Vibrio population density ranged from 2.1×101 to 4.36×104 CFU/ml in the suburban community and from 2.80×101 to 1.80×105 CFU/ml in the urban community. Vibrio species associated with 180 μm, 60 μm, and 20 μm plankton sizes were observed at densities of 0-1.36×103 CFU/ml, 0-8.40×102 CFU/ml, and 0-6.80×102 CFU/ml, respectively at the suburban community’s WWTP. In the urban community, observed densities of culturable Vibrio were 0-2.80×102 CFU/ml (180 μm), 0-6.60×102 CFU/ml (60 μm), and 0-1.80×103 CFU/ml (20 μm). The abundance of free-living Vibrio species ranged from 0 to 1.0×102 and 1.0×103 CFU/ml in the suburban and urban communities’ WWTPs, respectively. Molecular confirmation of the presumptive Vibrio isolates revealed the presence of V. fluvialis (41.38%), V. vulnificus (34.48%), and V. parahaemolyticus (24.14%) in the suburban community effluents. In the urban community molecular confirmation revealed that the same species were present at slightly different percentages, V. fluvialis (40%), V. vulnificus (36%), and V. parahaemolyticus (24%). There was no significant correlation between Vibrio abundance and season, either as free-living or planktonassociated entities, but Vibrio species abundance was positively correlated with temperature (r=0.565; p<0.01), salinity, and dissolved oxygen (p<0.05). Turbidity and pH showed significant seasonal variation (p<0.05) across the seasons in both locations. This study underscores the potential of WWTPs to be sources of Vibrio pathogens in the watershed of suburban and urban communities in South Africa.

The Ecology of Vibrio vulnificus, Vibrio cholerae, and Vibrio parahaemolyticus in North Carolina Estuaries: Karen Dyer Blackwell , James D. Oliver; J. Microbiol. 2008;46(2):146-153. Published online June 11, 2008; DOI: https://doi.org/10.1007/s12275-007-0216-2

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110 Scopus

Abstract: While numerous studies have characterized the distribution and/or ecology of various pathogenic Vibrio spp., here we have simultaneously examined several estuarine sites for Vibrio vulnificus, V. cholerae, and V. parahaemolyticus. For a one year period, waters and sediment were monitored for the presence of these <br>three pathogens at six different sites on the east coast of North Carolina in the United States. All three pathogens, identified using colony hybridization and PCR methods, occurred in these estuarine environments, although V. cholerae occurred only infrequently and at very low levels. Seventeen chemical, physical, and biological parameters were investigated, including salinity, water temperature, turbidity, dissolved oxygen, levels of various inorganic nutrients and dissolved organic carbon, as well as total vibrios, total coliforms, and E. coli. We found each of the Vibrio spp. in water and sediment to correlate to several of these environmental measurements, with water temperature and total Vibrio levels correlating highly (P<0.0001) with occurrence of the three pathogens. Thus, these two parameters may represent simple assays for characterizing the potential public health hazard of estuarine waters.

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