Aerobiology, a factor in environmental change.

Project leader

Funding source

Formas - The Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning

Project Details

Start date: 01/01/2009
End date: 31/12/2010
Funding: 1862000 SEK


Airborne microorganisms have been known for centuries, but still there are almost no available data on the number of bacteria, fungi and algae in the atmosphere nor any adequate estimates of the fraction of live microorganisms. We identify a number of environmental change scenarios that call for aerobiota numbers and we propose to supply this data through three different tasks. First, we will conduct a high frequency (2-3 times/week) sampling from the harbor tower in Kalmar. Bacterial and fungal numbers and viability will be recorded. In this study we will also calculate backward 3-D trajectories to provide geographical origin of the sampled air-mass. A statistical analysis on a large data set of microrganism samples and trajectories will allow quantification of sources (and sinks) as has been done for the marine atmospheric boundary layer sulfur cycle. In the second task we will determine aerobiota composition based on microorganism abundance and phylogenetic composition from molecular cloning, sampled from light aircraft. Samples will be collected below and above the boundary layer twice a month coordinated with the tower sampling. Finally two process-oriented campaigns on the emission of microorganisms to aerosol from sea water will be performed. This work will be collocated with already granted aerosol eddy covariance flux measurements to expand the biological sampling programs to include surface layer samples, molecular cloning and microscopic analysis.

External Partners

Last updated on 2017-24-03 at 12:56