Institution: University of New Hampshire
Department: Earth Systems Research Center, and Natural Resources and the Environment
8 College Road
Durham, NH 02824
Department: Earth Systems Research Center, and Natural Resources and the Environment
8 College Road
Durham, NH 02824
Hubbard Brook Role: Post-doctoral Researcher
Advisor: Scott Ollinger
Advisor: Scott Ollinger
Hubbard Brook Publications by this Author
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Blagden, M., Harrison, J. L., Minocha, R., Sanders-DeMott, R., Long, S., & Templer, P. H. (2022). Climate change influences foliar nutrition and metabolism of red maple (Acer rubrum) trees in a northern hardwood forest. Ecosphere, 13(2), e03859. https://doi.org/10.1002/ecs2.3859
Harrison, J. L., Schultz, K., Blagden, M., Sanders-DeMott, R., & Templer, P. H. (2020). Growing season soil warming may counteract trend of nitrogen oligotrophication in a northern hardwood forest. Biogeochemistry, 151(2), 139–152. https://doi.org/10.1007/s10533-020-00717-z
Garcia, M. O., Templer, P. H., Sorensen, P. O., Sanders-DeMott, R., Groffman, P. M., & Bhatnagar, J. M. (2020). Soil Microbes Trade-Off Biogeochemical Cycling for Stress Tolerance Traits in Response to Year-Round Climate Change. Frontiers in Microbiology, 11. https://www.frontiersin.org/articles/10.3389/fmicb.2020.00616
Sorensen, P. O., Finzi, A. C., Giasson, M.-A., Reinmann, A. B., Sanders-DeMott, R., & Templer, P. H. (2018). Winter soil freeze-thaw cycles lead to reductions in soil microbial biomass and activity not compensated for by soil warming. Soil Biology and Biochemistry, 116(Supplement C), 39–47. https://doi.org/10.1016/j.soilbio.2017.09.026
Templer, P. H., Reinmann, A. B., Sanders-DeMott, R., Sorensen, P. O., Juice, S. M., Bowles, F., Sofen, L. E., Harrison, J. L., Halm, I., Rustad, L., Martin, M. E., & Grant, N. (2017). Climate Change Across Seasons Experiment (CCASE): A new method for simulating future climate in seasonally snow-covered ecosystems. PLOS ONE, 12(2), e0171928. https://doi.org/10.1371/journal.pone.0171928
Sanders-DeMott, R. (2017). Interacting effects of growing season and winter climate change on nitrogen and carbon cycling in northern hardwood forests (HBR.2017-20) [PhD Thesis, Boston University]. https://open.bu.edu/handle/2144/20872