Associate Professor of Soil Science/Microbial Ecology
College of Agricultural Sciences
Phone number(s): 
(814) 863-0779
Office Address: 
206 Agricultural Sciences and Industries
PSIEE Research Theme: 
Water and Biogeochemical Cycles
Research Summary: 
Soil microbial responses to anthropogenic disturbance and of microbes’ roles in mitigating disturbance effects; nitrogen transformations in agricultural and urban soils; microbe-mineral-plant interactions and biological crusts that form and stabilize soils in acid mine drainage impacted areas; and carbon and nitrogen fixation by bacterial communities in soil crusts and in bedrock-regolith interface zones.