Meteorological factors and ambient bacterial levels in a subtropical urban environment

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Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/108795

Title:	Meteorological factors and ambient bacterial levels in a subtropical urban environment
Authors:	李崇德;Wu, Yi-Hua;Chan, Chang-Chuan;Chew, Ginger L.;Shih, Po-Wen;Lee, Chung-Te;Chao, H. Jasmine
Contributors:	環境監測技術聯合中心
Keywords:	agar;air;Air Microbiology;Air Pollutants;Air Pollutants - analysis;Air Pollutants - classification;Air pollution;Air sampling;analysis;Animal Physiology;Atmospheric aerosols;Autumn;Bacteria;Bacteria - classification;Bacteria - isolation & purification;Biological and Medical Physics;Biometeorology;Biophysics;Cities;classification;Climate;correlation;Earth and Environmental Science;Environment;Environmental factors;Environmental Health;Environmental Monitoring;Gram-negative bacteria;Hydrocarbons;isolation & purification;Longitudinal studies;Meteorological Concepts;Meteorology;Methane;Methane - analysis;Metropolitan areas;multivariate analysis;Original Paper;Ozone;Ozone - analysis;Particulate Matter;Particulate Matter - analysis;particulates;Plant Physiology;pollutants;Relative humidity;Samplers;seasonal variation;Seasonal variations;Sulfur;Sulfur dioxide;Sulfur Dioxide - analysis;Taiwan;temperature;Urban areas;Urban environments;wind direction;Wind speed;winter
Date:	2012-01-04
Issue Date:	2026-04-23 15:07:07 (UTC+8)
Publisher:	Springer New York;Berlin/Heidelberg: Springer-Verlag
Abstract:	摘要： We conducted a study to investigate the characteristics and determinants of ambient bacteria in Taipei, Taiwan from August 2004 to March 2005. We monitored ambient culturable bacteria in Shin-Jhuang City, an urban area in the Taipei metropolitan areas, using duplicate Burkard Portable Air Samplers with R2A agar. The average concentration of total bacteria was 1,986 colony-forming units per cubic meter of air (CFU/m 3 ) (median = 780 CFU/m 3 ) over the study period, with the highest level in autumn. Most bacterial taxa had similar seasonal variation, with higher concentrations in autumn and winter. During the study period, Gram negative rods and cocci were predominant. Multivariate analyses indicated that wind speed and wind direction significantly influenced ambient bacterial distribution. Temperature and relative humidity were also important environmental factors positively associated with ambient bacterial concentrations. We observed statistically significant relationships between ambient bacteria and air pollutants, including sulfur dioxide (SO 2 ), ozone, particulate matter (aerodynamic diameter ≤10 μm (PM 10 )), methane and total hydrocarbons. The concentrations of methane and total hydrocarbons during the previous day were positively associated with total bacteria and Gram negative rods, respectively. Ozone level on the previous day had a negative relationship with Gram negative cocci. SO 2 level with a 3-day lag was positively correlated with concentrations of both total bacteria and Gram negative cocci. In the future, more longitudinal studies are needed to confirm the relationships and possible mechanisms between ambient bacteria and meteorological factors, as well as to evaluate the ecological and health impacts of ambient bacteria. 其他題名： Int J Biometeorol 出版者： Berlin/Heidelberg: Springer-Verlag 出版日期： 2012-11 出處： International journal of biometeorology, 2012-11, Vol.56 (6), p.1001-1009 資源來源： Agricultural & Environmental Science Collection 版權： ISB 2012 識別號： ISSN: 0020-7128 識別號： ISSN: 1432-1254 識別號： EISSN: 1432-1254 識別號： DOI: 10.1007/s00484-011-0514-6 識別號： PMID: 22219040
Appears in Collections:	[Center for Environmental Monitoring and Technology] journal & Dissertation

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