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Microbial Community Assembly and Feedbacks on Biogeochemical Cycling:
ISU Barton Road Ecological Research Site. Cheatgrass invasion of Sagebrush Steppe alters belowground fungal and bacterial assemblages as well as soil-atmosphere trace gas fluxes.

We work at both organismal and landscape scales to understand the basic principles of plant-associated microbial community assembly, how this is impacted by environmental disturbances (e.g. invasive plant species (left), changing nutrient regimes) and the resulting feedbacks on biogeochemical cycling. 

Mosses in arid lands are teeming with microbes, which, together, play important roles in nutrient cycling.

Ice-nucleating capabilities of some microbes may
control their dispersal to new habitats and their ability to influence cloud formation and weather patterns.