Nutrient cycling in agricultural watersheds of the Great Lakes
Nutrients lost from agricultural areas in watersheds of the Great Lakes cause harmful algal blooms and hypoxia in some areas of the Great Lakes. Substantial efforts are being made in these watersheds to reduce the amount of nutrients entering the streams and rivers; however, additional work is needed to further reduce nutrient loads to meet international water quality standards. Limited research has been done to understand how nutrients are transformed, processed, and potentially removed in the river systems. This information is important to managers because the retention of nutrients in these river systems may be lowering the amount of nutrients entering the Great Lakes.
Nutrient Cycling in Aquatic Ecosystems
The objectives of this research project are to characterize rates of sediment nitrogen removal and phosphorus retention in agricultural watersheds of the Great Lakes and to assess how land use and agricultural land management actions affect these rates. Two high priority watersheds are being studied for this project: the Maumee River Basin which empties into Lake Erie and the Fox River Basin which drains into Lake Michigan.
IPDS Publications associated with this project:
Importance of dense aquatic vegetation in seasonal phosphate and particle transport in an agricultural headwater stream
Watershed- and reach-scale drivers of phosphorus retention and release by streambed sediment in a western Lake Erie watershed during summer
Phosphorus sources, forms, and abundance as a function of streamflow and field conditions in a Maumee River tributary, 2016-2019
Riparian forest cover modulates phosphorus storage and nitrogen cycling in agricultural stream sediments
Land use effects on sediment nutrient processes in a heavily modified watershed using structural equation models
Complex response of sediment phosphorus to land use and management within a river network
Denitrification in the river network of a mixed land use watershed: Unpacking the complexities
Beyond the edge: Linking agricultural landscapes, stream networks, and best management practices
Nutrients lost from agricultural areas in watersheds of the Great Lakes cause harmful algal blooms and hypoxia in some areas of the Great Lakes. Substantial efforts are being made in these watersheds to reduce the amount of nutrients entering the streams and rivers; however, additional work is needed to further reduce nutrient loads to meet international water quality standards. Limited research has been done to understand how nutrients are transformed, processed, and potentially removed in the river systems. This information is important to managers because the retention of nutrients in these river systems may be lowering the amount of nutrients entering the Great Lakes.
Nutrient Cycling in Aquatic Ecosystems
The objectives of this research project are to characterize rates of sediment nitrogen removal and phosphorus retention in agricultural watersheds of the Great Lakes and to assess how land use and agricultural land management actions affect these rates. Two high priority watersheds are being studied for this project: the Maumee River Basin which empties into Lake Erie and the Fox River Basin which drains into Lake Michigan.
IPDS Publications associated with this project: