Publications

Filters: Author is Heidi Asbjornsen  [Clear All Filters]
2017
L. A. Schulte, Niemi, J., Helmers, M. J., Liebman, M., Arbuckle, J. G., James, D. E., Kolka, R. K., O'Neal, M. E., Tomer, M. D., Tyndall, J. C., Asbjornsen, H., Drobney, P., Neal, J., Van Ryswyk, G., and Witte, C., “Prairie strips improve biodiversity and the delivery of multiple ecosystem services from corn–soybean croplands”, PNAS, 2017.
2014
M. Perez-Suarez, Castellano, M. J., Kolka, R., Asbjornsen, H., and Helmers, M., “Nitrogen and carbon dynamics in prairie vegetation strips across topographical gradients in mixed Central Iowa agroecosystems”, Agriculture, Ecosystems, and Environment, vol. 188, p. 11, 2014.
X. Zhou, Helmers, M. J., Asbjornsen, H., Kolka, R., Tomer, M. D., and Cruse, R. M., “Nutrient removal by prairie filter strips in agricultural landscapes”, Journal of Soil and Water Conservation, vol. 69, pp. 54-64, 2014.
J. Gutierrez-Lopez, Asbjornsen, H., Helmers, M., and Isenhart, T., “Regulation of soil moisture dynamics in agricultural fields using strips of native prairie vegetation”, Geoderma, vol. 226, pp. 238-249, 2014.
H. Asbjornsen, Hernandez-Santana, V., Liebman, M., Bayala, J., Chen, J., Helmers, M., Ong, C. K., and Schulte, L. A., “Targeting perennial vegetation in agricultural landscapes for enhancing ecosystem services”, Renewable Agriculture and Food Systems, vol. 29, pp. 101-125, 2014.
2013
V. Hernandez-Santana, Zhou, X., Helmers, M. J., Asbjornsen, H., Kolka, R., and Tomer, M., “Native prairie filter strips reduce runoff from hillslopes under annual row-crop systems in Iowa, USA”, Journal of HydrologyJournal of Hydrology, vol. 477, pp. 94-103, 2013.
2012
M. J. Helmers, Zhou, X., Asbjornsen, H., Kolka, R., Tomer, M. D., and Cruse, R. M., “Sediment removal by prairie filter strips in row-cropped ephemeral watersheds”, Journal of environmental quality, vol. 41, pp. 1531-1539, 2012.
2011
M. J. Helmers, Zhou, X., Asbjornsen, H., and Kolka, R., “Water quality benefits of perennial filter strips in row-cropped watersheds”, 2011.
2010
R. M. Maher, Asbjornsen, H., Kolka, R. K., Cambardella, C. A., and Raich, J. W., “Changes in soil respiration across a chronosequence of tallgrass prairie reconstructions”, Agriculture, ecosystems & environment, vol. 139, pp. 749-753, 2010.
X. Zhou, Helmers, M. J., Asbjornsen, H., Kolka, R., and Tomer, M. D., “Perennial filter strips reduce nitrate levels in soil and shallow groundwater after grassland-to-cropland conversion”, Journal of environmental quality, vol. 39, pp. 2006-2015, 2010.
2008
S. Secchi, Tyndall, J., Schulte, L. A., and Asbjornsen, H., “High crop prices and conservation: Raising the stakes”, Journal of Soil and Water Conservation, vol. 63, p. 68A-73A, 2008.PDF icon Secchi et al. 2008 JSWC.pdf (968.32 KB)
H. Asbjornsen, Shepherd, G., Helmers, M., and Mora, G., “Seasonal patterns in depth of water uptake under contrasting annual and perennial systems in the Corn Belt Region of the Midwestern US”, Plant and Soil, vol. 308, pp. 69-92, 2008.
L. A. Schulte, Asbjornsen, H., Atwell, R. C., Hart, C., Helmers, M., Isenhart, T., Kolka, R., Liebman, M., Neal, J., O'Neal, M., Schultz, R., Secchi, S., Thompson, J., Tomer, M., and Tyndall, J., “Targeted conservation approaches for improving water quality: Multiple benefits for expanded opportunities”, Iowa State University, Ames, Iowa, PMR 1002, 2008.PDF icon Schulte et al. 2008 ISUExt.PMR1002.pdf (2.12 MB)
2007
H. Asbjornsen, Mora, G., and Helmers, M. J., “Variation in water uptake dynamics among contrasting agricultural and native plant communities in the Midwestern US”, Agriculture, ecosystems & environment, vol. 121, pp. 343-356, 2007.
2006
L. A. Schulte, Asbjornsen, H., Liebman, M., and Crow, T. R., “Agroecosystem restoration through strategic integration of perennials”, Journal of Soil and Water Conservation, vol. 61, p. 164A-169A, 2006.