Richard Smith

Phone: (603) 862-2724
Office: Natural Resources & the Environment, James Hall Rm 264, Durham, NH 03824

In general, my research tends to focus on the interface between agriculture and plant community and ecosystem ecology. My interests include weed ecology and management, the role of diversity in agroecosystem function, plant invasions, community assembly theory, trophic interactions, and implications of land-use and climate change. The overall goal of my research is to better understand the ecological interactions that underpin agricultural production systems so as to improve the economic and environmental sustainability of agriculture.


  • Ph.D., Plant Biology; Ecology, Evolutionary Biology & Behavior, Michigan State University
  • B.S., Biology, University of New Mexico

Research Interests

  • Agricultural Management
  • Agriculture Conservation
  • Agronomy
  • Climate Change
  • Crop Protection (Pests, Diseases, & Weeds)
  • Crops and Pastures
  • Ecology
  • Ecosystems
  • Environmental Conservation
  • Invasive Species
  • Organic Farming
  • Pest Management
  • Plant Sciences

Courses Taught

  • NR 600: Work Experience
  • NR 909: Analysis of Ecological Data
  • NRES 997: Interdisciplinary Research
  • NRES 999: Doctoral Research
  • SAFS 502: Agroecology
  • SAFS 795W: Investigations

Selected Publications

Bybee-Finley, K. A., Menalled, U. D., Pelzer, C. J., Ruhl, L., Lounsbury, N. P., Warren, N. D., . . . Ryan, M. R. (2023). Quantifying the roles of intraspecific and interspecific diversification strategies in forage cropping systems. Field Crops Research, 302, 109036. doi:10.1016/j.fcr.2023.109036

de Souza, I. A., Daly, A. B., Schnecker, J., Warren, N. D., Lobo Jr, A. R., Smith, R. G., . . . Grandy, A. S. (2023). Short‐term responses of soil carbon, nitrogen, and microbial biomass to cover crop mixtures and monocultures. Agrosystems, Geosciences & Environment, 6(3). doi:10.1002/agg2.20395

Warren, N. D., Hobbie, E. A., Chen, J., & Smith, R. G. (n.d.). Relative uptake of organic and inorganic nitrogen by common weed species. Weed Science, 1-23. doi:10.1017/wsc.2023.48

Teixeira, C. D. S., Castillo, B. T., Bernhardt, L., Warren, N. D., Petry, C., Ernakovich, J. G., . . . Frey, S. D. (n.d.). Frequent defoliation of perennial legume-grass bicultures alters soil carbon dynamics. Plant and Soil. doi:10.1007/s11104-023-06091-7

Warren, N. D., Cox, D. A., & Smith, R. G. (2023). Effects of soil amendments on hairy vetch no‐till interseeded into a hayfield. Agronomy Journal, 115(2), 887-895. doi:10.1002/agj2.21249

Hunter, M. C., Smith, R. G., Schipanski, M. E., Atwood, L. W., & Mortensen, D. A. (2017). Agriculture in 2050: Recalibrating Targets for Sustainable Intensification. BIOSCIENCE, 67(4), 385-390. doi:10.1093/biosci/bix010

Smith, R. G., Atwood, L. W., & Warren, N. D. (2014). Increased Productivity of a Cover Crop Mixture Is Not Associated with Enhanced Agroecosystem Services. PLOS ONE, 9(5). doi:10.1371/journal.pone.0097351

Mortensen, D. A., Egan, J. F., Maxwell, B. D., Ryan, M. R., & Smith, R. G. (2012). Navigating a Critical Juncture for Sustainable Weed Management. BIOSCIENCE, 62(1), 75-84. doi:10.1525/bio.2012.62.1.12

Smith, R. G., Gross, K. L., & Robertson, G. P. (2008). Effects of crop diversity on agroecosystem function: Crop yield response. ECOSYSTEMS, 11(3), 355-366. doi:10.1007/s10021-008-9124-5

Menalled, F. D., Smith, R. G., Dauer, J. T., & Fox, T. B. (2007). Impact of agricultural management on carabid communities and weed seed predation. AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 118(1-4), 49-54. doi:10.1016/j.agee.2006.04.011

Most Cited Publications