MS Student, Idaho State University
USDA-ARS Boise, ID
Sasha Reed USGS Moab, UT
BS, Microbiology, Idaho State University, 2014
I am studying the nitrogen fixation and diversity of the functional gene nifH of biotic crusts within the Reynolds Creek Watershed. To do this I am collecting surface samples of biotic crusts and performing DNA extractions, PCR amplification, and an acetylene reduction assay to understand the diversity and activity of the nitrogenase enzyme. My sites are located along the elelvational gradient which will allow me to examine the controls of temperature, moisture, and soil nutrients on nitrogen fixation.
2018 (In Review)
Relative Abundance of Nitrogen-Fixing Bacteria in Biological Soil Crusts in Sagebrush Steppe Ecosystems of the Intermountain West US. Schwabedissen, S.G., Sheridan, P.P, Aho, K.A., Magnuson, K.A. (2018): FEMS Microbial Ecology
Variation in Biological Soil Crust Bacterial Abundance and Diversity as a Function of Climate in Cold Steppe Ecosystems in the Intermountain West, USA. Blay, E.S., Schwabedissen, S.G., Magnuson, T.S., Aho, K., Sheridan, P.P., and K.A. Lohse (2017): Microbial Ecology 74 (3): 691–700
Nitrogenase Activity by Biological Soil Crusts in Cold Sagebrush Steppe Ecosystems. Schwabedissen, S.G., Lohse, K.A., Reed, S.C., Aho, K.A., T.S. Magnuson (2017): Biogeochemistry 134 (1–2): 57–76
Papers and books that explicitly acknowledge a CZO grant are highlighted in PALE ORANGE.
Climatic and Grazing Controls on Nitrogen Fixation by Biological Soil Crusts Utilizing a Climatic Gradient in a Semi-arid Ecosystem. Schwabedissen, S.G. (2016): Idaho State University
Variation in Biological Soil Crust Bacterial Diversity with a Changing Climate. Blay, E., Schwabedissen, S., Reed, S., Sheridan, P., Magnuson, T., and K. Lohse (2015): Undergraduate Research and Scholarship Conference, Boise, ID.