Abstract
Nitrate-nitrogen losses following tallgrass prairie reconstruction at a watershed scale; updating the water quality record at the Neal Smith National Wildlife Refuge (NSNWR) after 22 years
Abstracts with programs - Geological Society of America, Vol.50(4)
Geological Society of America, North-Central Section, 52nd annual meeting
04/2018
Abstract
A large scale effort at tallgrass prairie ecosystem reconstruction was undertaken at the NSNWR in central Iowa beginning 1994. A variety of hydrologic investigations have been undertaken since then to document how ground and surface water systems have responded to conversion from cropland to prairie. One of these efforts has tracked nitrate-nitrogen losses. The first 10 years of record showed a slow decline in nitrate losses, averaging less than 1 mg/L NO3-N decline. This report will update that finding to consider 22 years of record. The headwaters of the watershed have remained in agricultural production, hence differences in upstream and downstream records are being evaluated to infer how effective the prairie reconstruction has been in driving a reduction in N loss.
Details
- Title: Subtitle
- Nitrate-nitrogen losses following tallgrass prairie reconstruction at a watershed scale; updating the water quality record at the Neal Smith National Wildlife Refuge (NSNWR) after 22 years
- Creators
- Mark D. Tomer - U. S. Department of Agriculture-Agricultural Research Service, National Laboratory for Agriculture and the Environment Iowa City, IA USA United StatesKeith SchillingKevin Cole
- Resource Type
- Abstract
- Publication Details
- Abstracts with programs - Geological Society of America, Vol.50(4)
- Conference
- Geological Society of America, North-Central Section, 52nd annual meeting
- Publisher
- Geological Society of America (GSA)
- ISSN
- 0016-7592
- Alternative title
- Geological Society of America, North-Central Section, 52nd annual meeting
- Language
- English
- Date published
- 04/2018
- Academic Unit
- Earth and Environmental Sciences; IIHR--Hydroscience and Engineering
- Record Identifier
- 9984384339402771
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