Diversitat dels bacteris aeris al litoral de Barcelona

Trabajo final presentado porPatricia Armero Jurado para el Máster en Microbiología Avanzada de la Universitat de Barcelona (UB), realizado bajo la dirección de la Dra. Maria Montserrat Sala del Institut de Ciències del Mar (ICM-CSIC).-- 38 pages, 15 figures, annexesLarge amounts of microorganisms are continuously exchanged among ecosystems and continents through the atmosphere, remaining suspended as aerosol particles for days and being transported by wind over long distances before returning to the ecosystems. In this study we want to assess whether or not distance from land affects to the composition of the aerial microbiological community, as well as the source of origin of its bacteria (land, seawater, fresh water lake, etc.). We hypothesize that the further from coast the more bacteria from a marine origin and the lesser from land. We also want to know if the composition of the microbiological community changes with time and whether or not the composition of the microbiological community from seawater and air are the same. For this reason we took samples of air and water from three different locations at different months of the year, from December to March. We also traveled along 5 parallel transects in the AMICS campaign, where we took samples of both water and air and we made replicas. Our results show that the microbiological communities from seawater and air are different. We have evaluated that the community composition changes with time and with distance from coast. On the other hand, we have not found a greater contribution of marine bacteria as we increase the distance from coast. But we have found that the percentage of marine and terrestrial bacteria is most affected by the direction and velocity of the windPeer reviewe