Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 9/1/2005
Publication Date: 11/1/2005
Citation: Williams, C., Smith, D.R., Joern, B. 2005. Land management impacts on internal P loading in ditches and streams. In: Proceedings of the ASA-CSSA-SSSA Annual Meeting Abstracts, November 6-10, 2005, Salt Lake City, UT. 2005 CDROM.
Technical Abstract: Internal P loading from sediments to waterbodies may be a significant source of P and may prevent the attainment of surface water nutrient criteria developed by the USEPA. Our objectives were to 1) relate surface water P concentrations to sediment P and 2) determine if differences in land use were associated with water and sediment P concentrations in the ditches and streams that contribute to a major drinking water reservoir for the city of Indianapolis, IN. We will present relationships between water and sediment P concentrations in subwatersheds dominated by residential homes, row-crop agriculture, or livestock agriculture. The relative contribution of each subwatershed to total P loading also will be discussed.