The Annual Bacterial Particle Concentration and Size Distribution in the Ambient Atmosphere in a Rural Area of the Willamette Valley, Oregon

Tong, Yaojun; Lighthart, Bruce

doi:10.1080/027868200303533

Cited by 138 publications

(105 citation statements)

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“…Bacteria are often present in the atmosphere as bacteria aggregate clumps or as a constituent part of some other aerosol (Després et al, 2012). Aerosols containing culturable bacteria have been reported to have aerodynamic diameters of ∼ 4 µm at several continental sites (Després et al, 2012;Tong and Lighthart, 2000;Wang et al, 2007), which is similar to the cluster diameters of ∼ 2-4 µm. The relatively high cluster AFs are consistent with bacterial aggregates, which are expected to be highly asymmetric.…”

Section: Cluster Analysis Of Two Ambient Wibs Data Setssupporting

confidence: 51%

Cluster analysis of WIBS single-particle bioaerosol data

et al. 2013

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?? Author(s) 2013. This work is distributed under the Creative Commons Attribution 3.0 LicenseHierarchical agglomerative cluster analysis was performed on single-particle multi-spatial data sets comprising optical diameter, asymmetry and three different ???uorescence measurements, gathered using two dual Wideband Integrated Bioaerosol Sensors (WIBSs). The technique is demonstrated on measurements of various ???uorescent and non-???uorescent polystyrene latex spheres (PSL) before being applied to two separate contemporaneous ambient WIBSdata sets recorded in a forest site in Colorado, USA, as part of the BEACHON-RoMBAS project. Cluster analysis results between both data sets are consistent. Clusters are tentatively interpreted by comparison of concentration time series and cluster average measurement values to the published literature (of which there is a paucity) to represent the following: non-???uorescent accumulation mode aerosol; bacterial agglomerates; and fungal spores. To our knowledge, this is the ???rst time cluster analysis has been applied to long-term online primary biological aerosol particle (PBAP) measurements. The novel application of this clustering technique provides a means for routinely reducing WIBS data to discrete concentration time series which are more easily interpretable, without the need for any a priori assumptions concerning the expected aerosol types. It can reduce the level of subjectivity compared to the more standard analysis approaches, which are typically performed by simple inspection of various ensemble data products. It also has the advantage of potentially resolving less populous or subtly different particle types. This technique is likely to become more robust in the future as ???uorescence-based aerosol instrumentation measurement precision, dynamic range and the number of available metrics are improved

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Section: Cluster Analysis Of Two Ambient Wibs Data Setssupporting

confidence: 51%

Cluster analysis of WIBS single-particle bioaerosol data

et al. 2013

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“…Also, marine bacteria are smaller than land bacteria, with biovolumes often in the range 0.036 Á 0.073 mm 3 (Lee and Fuhrman, 1987), corresponding to equivalent spherical diameters of 0.20 Á 0.26 mm. Consistent with the smaller size of marine bacteria, the count median diameter of particles associated with culturable bacteria has been found to be smaller at coastal sites Á about 2 mm Á compared to about 4 mm at continental sites (Shaffer and Lighthart, 1997;Tong and Lighthart, 2000;Wang et al, 2007).…”

Section: Bacteria and Archaeamentioning

confidence: 50%

Primary biological aerosol particles in the atmosphere: a review

Després¹,

Huffman

Burrows³

et al. 2012

Tellus B: Chemical and Physical Meteorology

1,191

1,114

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A B S T R A C T Atmospheric aerosol particles of biological origin are a very diverse group of biological materials and structures, including microorganisms, dispersal units, fragments and excretions of biological organisms. In recent years, the impact of biological aerosol particles on atmospheric processes has been studied with increasing intensity, and a wealth of new information and insights has been gained. This review outlines the current knowledge on major categories of primary biological aerosol particles (PBAP): bacteria and archaea, fungal spores and fragments, pollen, viruses, algae and cyanobacteria, biological crusts and lichens and others like plant or animal fragments and detritus. We give an overview of sampling methods and physical, chemical and biological techniques for PBAP analysis (cultivation, microscopy, DNA/RNA analysis, chemical tracers, optical and mass spectrometry, etc.). Moreover, we address and summarise the current understanding and open questions concerning the influence of PBAP on the atmosphere and climate, i.e. their optical properties and their ability to act as ice nuclei (IN) or cloud condensation nuclei (CCN). We suggest that the following research activities should be pursued in future studies of atmospheric biological aerosol particles: (1) develop efficient and reliable analytical techniques for the identification and quantification of PBAP; (2) apply advanced and standardised techniques to determine the abundance and diversity of PBAP and their seasonal variation at regional and global scales (atmospheric biogeography); (3) determine the emission rates, optical properties, IN and CCN activity of PBAP in field measurements and laboratory experiments; (4) use field and laboratory data to constrain numerical models of atmospheric transport, transformation and climate effects of PBAP.

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“…Even on the scale of a single day, the airborne spore concentration increased from 20 000 spores/m 3 to 170 000 spores/m 3 in a 2-h period in the area around Tulsa, Oklahoma (USA) (Burch and Levetin, 2002). Diurnal periodicity has also been observed (Lindemann and Upper, 1985;Tong and Lighthart, 2000). On the other hand, for the fungus Gibberella zeae, no differences were observed in air-borne concentrations between the day and night at 60 m above the ground (Maldonado-Ramirez et al, 2005).…”

Section: Introductionmentioning

confidence: 85%

“…High concentrations of air-borne bacteria and fungal spores frequently occur from spring to fall in temperate areas of the world, mainly due to the fact that leaf surfaces are a major source of fungi (Levetin and Dorsey, 2006;Mitakakis et al, 2001) and bacteria (Tong and Lighthart, 2000) in the air. The higher concentrations of bacteria observed in the summer (JulyAugust) over two agricultural sites in Oregon (USA) may reflect the flux from agricultural sources and activities and dry dusty soil conditions at this time of the year (Tong and Lighthart, 2000). Even on the scale of a single day, the airborne spore concentration increased from 20 000 spores/m 3 to 170 000 spores/m 3 in a 2-h period in the area around Tulsa, Oklahoma (USA) (Burch and Levetin, 2002).…”

Section: Introductionmentioning

confidence: 99%

Microbiology and atmospheric processes: research challenges concerning the impact of airborne micro-organisms on the atmosphere and climate

Morris

Sands

Bardin³

et al. 2011

Biogeosciences

185

115

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Abstract. For the past 200 years, the field of aerobiology has explored the abundance, diversity, survival and transport of micro-organisms in the atmosphere. Micro-organisms have been explored as passive and severely stressed riders of atmospheric transport systems. Recently, an interest in the active roles of these micro-organisms has emerged along with proposals that the atmosphere is a global biome for microbial metabolic activity and perhaps even multiplication. As part of a series of papers on the sources, distribution and roles in atmospheric processes of biological particles in the atmosphere, here we describe the pertinence of questions relating to the potential roles that air-borne micro-organisms might play in meteorological phenomena. For the upcoming era of research on the role of air-borne micro-organisms in meteorological phenomena, one important challenge is to go beyond descriptions of abundance of micro-organisms in the atmosphere toward an understanding of their dynamics in terms of both biological and physico-chemical properties and of the relevant transport processes at different scales. Another challenge is to develop this understanding under contexts pertinent to their potential role in processes related to atmospheric chemistry, the formation of clouds, precipitation and radiative forcing. This will require truly interdisciplinary approaches involving collaborators from the biological and physical sciences, from disciplines as disparate as agronomy, microbial genetics and atmosphere physics, for example.

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The Annual Bacterial Particle Concentration and Size Distribution in the Ambient Atmosphere in a Rural Area of the Willamette Valley, Oregon

Cited by 138 publications

References 0 publications

Cluster analysis of WIBS single-particle bioaerosol data

Cluster analysis of WIBS single-particle bioaerosol data

Primary biological aerosol particles in the atmosphere: a review

Microbiology and atmospheric processes: research challenges concerning the impact of airborne micro-organisms on the atmosphere and climate

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