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Publications
6. Smercina, D., Bowsher, A.W., Evans, S.E., Friesen, M.L., Eder, E.K., Hoyt, D.W., & Tiemann, L.K. (2020) Switchgrass rhizosphere metabolite chemistry driven by nitrogen availability. Phytobiomes Journal.In press.
5. Petipas, R. H., Bowsher, A. W., Bekkerring, C., Jack, C. N., McLachlan, E. E., White III, R. A., Younginger, B. S., Tiemann, L. K., Evans, S. E., & Friesen, M. L. (2019) Interactive effects of microbes and nitrogen on Panicum virgatum root functional traits and patterns of phenotypic selection. International Journal of Plant Sciences. 181 (20-32).
4. Smercina, D. N., Evans, S. E., Friesen, M. L., & Tiemann, L. K. (2019) Optimization of the 15N2 incorporation and acetylene reduction methods for free-living nitrogen fixation. Plant and Soil. 445 (595-611).
3. Smercina, D. N., Evans, S. E., Friesen, M. L., & Tiemann, L. K. (2019). To Fix or Not To Fix: Controls on Free-Living Nitrogen Fixation in the Rhizosphere. Appl. Environ. Microbiol., 85(6), e02546-18.
2. Ouyang, Y., Evans, S. E., Friesen, M. L., & Tiemann, L. K. (2018). Effect of Nitrogen fertilization on the abundance of nitrogen cycling genes in agricultural soils: A meta-analysis of field studies. Soil Biology and Biochemistry, 127(71-78).
1. Bowsher, A. W., Evans, S., Tiemann, L. K., & Friesen, M. L. (2017). Effects of soil nitrogen availability on rhizodeposition in plants: a review. Plant and Soil, 1-27.
Presentations
20. Ulbrich, T.C., L. Bell-Dereske, H. Ervin, S. Hilborn, S.E. Evans. Soil microbes affect switchgrass germination more than seedling growth under drought conditions. Poster. DOE 2020 Genomic Sciences Program Annual PI Meeting. Washington D.C, Feb. 23-26, 2020.
19. Smercina, D., L. Tiemann, A. Bowsher, M. Friesen, J.R. Cole, E. Eder, D. Hoyt, W. Chrisler, J. Cliff, K. Hofmockel, S. Evans. Free-living nitrogen fixation in the switchgrass rhizosphere. Poster. DOE 2020 Genomic Sciences Program Annual PI Meeting. Washington D.C, Feb. 23-26, 2020.
18. Tiemann, L. Connecting nitrogen transformations mediated by the rhizosphere microbiome to perennial cropping system productivity in marginal lands. Breakout session speaker. DOE 2020 Genomic Sciences Program Annual PI Meeting. Washington D.C, Feb. 25, 2020.
17. Smercina, D., L. Tiemann, K. Hofmockel. In situ characterization of plant-microbe associations and nutrient exchange in the rhizosphere. EMSL invited speaker seminar. Richland, WA, Mar. 13, 2019.
16. White III, R. A., A. Garoutte, A. Bowsher, Y. Ouyang, C. Bekkering, D. Smercina, S. Gougherty, H. Vander Stel, L. Bell-Dereske, J. Cole, L. K. Tiemann, S. Evans, M. L. Friesen. Deciphering spare functional repertoire of rhizosphere microbiomes in marginal lands containing switchgrass. Poster. DOE 2019 Genomic Sciences Program Annual PI Meeting. Washington D.C. Feb 24-27, 2019.
15. Bell-Dereske, L., Temann, L., Friesen, M., Cole, J., and Evans, S. E. The response of bacterial communities to nitrogen fertilization depends on temporal and spatial scale. DOE Genomics Science Program PI Meeting (Poster). Tysons, VA. February, 25 2019.
14. Bell-Dereske, L., Temann, L., Friesen, M., Cole, J., and Evans, S. E. The response of bacterial communities to nitrogen fertilization depends on temporal and spatial scale. Great Lake Bioenergy Research Center DOE Annual Review. Madison, WI. January 15, 2019.
13. Smercina, D., L. Tiemann, S. Evans, M. Friesen. Free-living Nitrogen-Fixation Rates Driven by Nitrogen-Fixer Diversity Over Nitrogen Availability. Oral Presentation. Goldschmidt 2018. Boston, MA, Aug. 12-17, 2018.
12. Chicoine, T., S. Roley, G. Robertson, S. Evans. Soil- and Root-associated Microbiomes Across Twelve Switchgrass Cultivars. DOE 2018 Genomic Sciences Program Annual PI Meeting. Washington D.C. Feb 25-28, 2018.
11. Evans, S., J. Cole, M. Friesen, S. Gougherty, L. Tiemann. Plant and Biogeochemical Controls on the Switchgrass Microbiome: Perspectives from a fine-scale time series. DOE 2018 Genomic Sciences Program Annual PI Meeting Washington D.C. Feb 25-28, 2018.
10. Smercina, D., L. Tiemann, S. Evans, M. Friesen. Environmental Controls on Free-living Nitrogen Fixation and Nitrogen Mineralization. Oral Presentation. Soil Ecology Society Meeting. Fort Collins, CO. Jun. 5-9, 2017.
9. Abolibdeh B. , D. Smercina , M. Friesen, S. Evans, L. Tiemann. The Effects of Growth Promitin Rhizobacteria and Endophytes on Switchgrass Growth and Root Architecture. Poster. DOE 2017 Genomic Sciences Program Annual PI Meeting. Arlington, VA. Feb. 5-8, 2017.
Abolibdeh et al. (2017) DOE (1 download)
8. Bowsher, A., C. Bekkering, M. Friesen, L. Tiemann, S. Evans. Switchgrass Growth Responses to Nitrogen Availability and the Rhizosphere Microbiome. Poster. DOE 2017 Genomic Sciences Program Annual PI Meeting. Arlington, VA. Feb. 5-8, 2017.
Bowsher et al. (2017) DOE (0 downloads)
7. Norman, J., W. West, L. Tiemann, M. Friesen, S. Evans. The Contribution of Alternative Nitrogenase Enzymes to Nitrogen Fixation in Switchgrass Rhizospheres on Marginal Lands. Poster. DOE 2017 Genomic Sciences Program Annual PI Meeting. Arlington, VA. Feb. 5-8, 2017.
Norman et al (2017) DOE (0 downloads)
6. Smercina, D., L. Tiemann, W. West, S. Evans, M. Friesen. Is there a link between free-living nitrogen fixation rates and nitrogen mineralization rates? Poster. DOE 2017 Genomic Sciences Program Annual PI Meeting. Arlington, VA. Feb. 5-8, 2017.
Smercina et al. (2017) DOE (0 downloads)
5. Smercina, D., L. Tiemann, W. West, S. Evans, M. Friesen. Is there a link between free-living nitrogen fixation rates and nitrogen mineralization rates? Poster. AGU Fall Meeting. San Francisco, CA. Dec. 12-16, 2016.
Smercina et al. (2016) AGU (0 downloads)
4. West, W., S. Evans, S. Jones. Connecting students to the larger picture: A case study of undergraduate research mentoring in environmental science. World Congress on Undergraduate Research. Doha, Qatar. Nov. 13-15, 2016.
3. Bloodworth, K. Examining the connection between plant exudates and microbial community regulating the nitrogen cycle in marginal land soil. Poster. World Congress on Undergraduate Research. Doha, Qatar. Nov. 13-15, 2016.
Bloodworth (2016) World Congress (0 downloads)
2. Chicoine, T., S.S. Roley, G.P. Robertson, L. Tiemann, M. Friesen, S. Evans. Variation in microbial communities and nitrogen transformation rates among switchgrass varieties. Poster. Keystone Symposia Conference (Phytobiomes: From Microbes to Plant Ecosystems. Santa Fe, NM. Nov. 8-12, 2016.
Chicoine et al. (2016) Keystone (0 downloads)
1. Evans, S., L. Tiemann, M. Friesen, J Cole. Connecting nitrogen transformations mediated by the rhizosphere microbiome to perennial cropping system productivity in marginal lands. DOE Genomic Sciences Program Annual PI Meeting. Tysons, VA. March 6-9, 2016.