Effect of the alternate orifice of Burkard spore trap on the concentration of airborne fungal spores. Abstract for the 81st Annual AAAS-Swarm Meeting, Science and the next generation, held Jointly with the 13th Annual Meeting of the Natural Philosophy Alliance and the 9th Annual University of Tulsa Student Research Colloquium, April 5-8 2006, The University of Tulsa, Tulsa, OK.