1. Bioprecipitation: a feedback cycle linking Earth history, ecosystem dynamics and land use through biological ice nucleators in the atmosphere
- Author
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Vaughan T. J. Phillips, Ulrich Pöschl, Franz Conen, David Sands, Cindy E. Morris, J. Alex Huffman, Unité de Pathologie Végétale (PV), Institut National de la Recherche Agronomique (INRA), Department Plant Sciences and Plant Pathology [Bozeman], Montana State University (MSU), Department of Environmental Sciences [Basel], University of Basel (Unibas), University of Denver, Department of Physical Geography and Ecosystem Science [Lund], Lund University [Lund], Max Planck Institute for Chemistry (MPIC), Max-Planck-Gesellschaft, and Epicurus Fund, internal faculty funding from the University of Denver, US Department of Energy's BER Program, US NSF Division of Atmospheric and Geospace Sciences
- Subjects
aérosol ,aerobiology ,vapeur d'eau ,Earth history ,010504 meteorology & atmospheric sciences ,Earth, Planet ,Rain ,[SDE.MCG]Environmental Sciences/Global Changes ,rainfall ,microflore ,Biodiversity ,Pseudomonas syringae ,biological ice nucleation ,01 natural sciences ,activité de nucléation de la glace ,Atmosphere ,03 medical and health sciences ,cloud physics ,ice multiplication ,Environmental Chemistry ,Precipitation ,Milieux et Changements globaux ,aérobiologie ,bioprécipitation ,Ecosystem ,approche ecosystémique ,030304 developmental biology ,0105 earth and related environmental sciences ,General Environmental Science ,0303 health sciences ,Global and Planetary Change ,Bacteria ,Ecology ,Land use ,Ice ,croissance des plantes ,Cloud physics ,15. Life on land ,histoire de la terre ,physique des nuages ,Bioprecipitation ,13. Climate action ,gestion du paysage ,Ecosystem dynamics ,Environmental science ,bactérie glacogène - Abstract
International audience; Landscapes influence precipitation via the water vapor and energy fluxes they generate. Biologically active landscapes also generate aerosols containing microorganisms, some being capable of catalyzing ice formation and crystal growth in clouds at temperatures near 0 °C. The resulting precipitation is beneficial for the growth of plants and microorganisms. Mounting evidence from observations and numerical simulations support the plausibility of a bioprecipitation feedback cycle involving vegetated landscapes and the microorganisms they host. Furthermore, the evolutionary history of ice nucleation-active bacteria such as Pseudomonas syringae supports that they have been part of this process on geological time scales since the emergence of land plants. Elucidation of bioprecipitation feedbacks involving landscapes and their microflora could contribute to appraising the impact that modified landscapes have on regional weather and biodiversity, and to avoiding inadvertent, negative consequences of landscape management.
- Published
- 2013
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