Archives: Portfolios

This project completes the final three months of a two year project. Soil moisture is the reservoir of water that supports agriculture. Soil moisture also affects the amount and variability

This study applies new approaches to understand the fate of soluble pollutants in the urban environment. Soil samples collected during warm season months as part of this field study compliment

Nitrate contamination from agriculture is a major water-quality problem in Iowa and a contributor to hypoxia in the Gulf of Mexico. In Iowa’s till-dominated watersheds, previous studies on nitrate transport

Nutrient enrichment of Iowa’s water bodies is one of the most critical issues the state is currently facing. Intensive farming and heavy nutrient application in the Midwest coupled with an

Iowa’s waterways receive excessive nitrogen from agricultural lands. This project aims to identify the spatial specifics of a conservation practice that has demonstrated abilities to promote denitrification within agricultural fields,

Since 2006, the Iowa Department of Natural Resources has issued 190 advisories at state park beaches because of high levels of microcystin produced by harmful algae. Among those advisories, 142

Iowa’s agricultural lands are among the most productive in the world, but they are also a large source of nitrate (NO3-)pollution. Ideally, NO3-is incorporated into crop tissues which are removed

Wastewater effluent contains a complex mixture of biologically active chemicals, in-cludingpharmaceuticals. Many pharmaceuticals have demonstrated deleterious effects to aquatic organisms including endocrine disruption, causing intersex characteristics,and reduced fecundity. These biological

Harmful algal blooms caused by cyanobacteria (cyanoHABs) are a serious water quality problem in Iowa’s lakes. The presence of cyanobacterial toxins in Iowa’s lakes can threaten human health and increase

Harmful algal blooms (HABs) present public health challenges for communities in Iowa and around the globe. These blooms are most closely associated with in-lake phosphorus availability. Management strategies to prevent