Publications

Filters: Author is Randall Kolka  [Clear All Filters]
2024
E. J. Henning, Kolka, R. K., and Helmers, M. J., “Infiltration within Native Prairie Vegetative Strips Embedded in Row Crop Fields across Iowa”, Journal of Soil and Water Conservation, vol. 79, no. 1, 2024.PDF icon 43.full_.pdf (587.84 KB)
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
T. E. Smith, Kolka, R. K., Zhou, X., Helmers, M. J., Cruse, R. M., and Tomer, M. D., “Effects of native perennial vegetation buffer strips on dissolved organic carbon in surface runoff from an agricultural landscape”, Biogeochemistry, vol. 120, pp. 121-132, 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.
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
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)