Lagrangian coherent structures are associated with fluctuations in airborne microbial populations

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dc.contributor.authorTallapragada, Phanindraen
dc.contributor.authorRoss, Shane D.en
dc.contributor.authorSchmale, David G. IIIen
dc.contributor.departmentBiomedical Engineering and Mechanicsen
dc.contributor.departmentSchool of Plant and Environmental Sciencesen
dc.date.accessed2013-11-20en
dc.date.accessioned2013-12-04T15:20:24Zen
dc.date.available2013-12-04T15:20:24Zen
dc.date.issued2011-09-01en
dc.description.abstractMany microorganisms are advected in the lower atmosphere from one habitat to another with scales of motion being hundreds to thousands of kilometers. The concentration of these microbes in the lower atmosphere at a single geographic location can show rapid temporal changes. We used autonomous unmanned aerial vehicles equipped with microbe-sampling devices to collect fungi in the genus Fusarium 100 m above ground level at a single sampling location in Blacksburg, Virginia, USA. Some Fusarium species are important plant and animal pathogens, others saprophytes, and still others are producers of dangerous toxins. We correlated punctuated changes in the concentration of Fusarium to the movement of atmospheric transport barriers identified as finite-time Lyapunov exponent-based Lagrangian coherent structures (LCSs). An analysis of the finite-time Lyapunov exponent field for periods surrounding 73 individual flight collections of Fusarium showed a relationship between punctuated changes in concentrations of Fusarium and the passage times of LCSs, particularly repelling LCSs. This work has implications for understanding the atmospheric transport of invasive microbial species into previously unexposed regions and may contribute to information systems for pest management and disease control in the future.en
dc.description.sponsorshipNational Science Foundation 0919088en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationTallapragada, P. and Ross, S. D. and Schmale, D. G., “Lagrangian coherent structures are associated with fluctuations in airborne microbial populations,” Chaos 21, 033122 (2011), DOI:http://dx.doi.org/10.1063/1.3624930en
dc.identifier.doihttps://doi.org/10.1063/1.3624930en
dc.identifier.issn1054-1500en
dc.identifier.urihttp://hdl.handle.net/10919/24411en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/chaos/21/3/10.1063/1.3624930en
dc.language.isoenen
dc.publisherAmerican Institute of Physicsen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectRange atmospheric transporten
dc.subjectLong-distance transporten
dc.subjectGibberella-Zeaeen
dc.subjectBoundary layeren
dc.subjectPolar vortexen
dc.subjectDesert dusten
dc.subjectSporesen
dc.subjectFlowsen
dc.subjectPathogensen
dc.subjectDiseaseen
dc.titleLagrangian coherent structures are associated with fluctuations in airborne microbial populationsen
dc.title.serialChaosen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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Scholarly Works, Biomedical Engineering and Mechanics
Destination Area: Global Systems Science (GSS)
Scholarly Works, School of Plant and Environmental Sciences