1a.Objectives (from AD-416):
The objectives of this cooperative research project are to conduct research (1) on the use of aquatic plants and/or various wetland ecosystems to reduce agricultural contaminants that contribute to non-point source pollution of downstream aquatic ecosystems and (2) that contributes to a better understanding of the causes of aquatic impairment and recommendations for contaminant reduction, with emphasis on the hill lands and delta of Mississippi.
1b.Approach (from AD-416):
Controlled experiments using biological and water quality indicators in mesocosms and constructed wetlands will be used to evaluate the extent of impairment and, conversely, recovery from specific agricultural contaminants that are of national and international concern, i.e. sediments, nutrients, and pesticides. Aquatic plants will be tested for their ability to process simulated agricultural storm runoff.
Multiple mesocosm-scale experiments were conducted to examine nutrient uptake effects by various species of aquatic plants. Conservation Effects Assessment Program (CEAP) related soil microbial assessments were also conducted within this cooperative agreement. The fifth-year study of rice's mitigation capacity to reduce nutrient and pesticide loads in agricultural runoff water was completed, and plans are currently underway to begin the sixth year study on the Univeristy of Mississippi Field Station (UMFS) experimental plot.