Wetland-mediated nitrate reductions attenuate downstream: Insights from a modeling study.

ABSTRACT: Connections between agricultural runoff and excess nitrogen in the Upper Mississippi River Basin are well-documented, as is the potential role of constructed wetlands in mitigating this surplus nitrogen. However, limited knowledge exists about the "best" placement of these wetlands for downstream nitrogen reductions within a whole watershed context as well as how far downstream these benefits are realized. In this study, we simulate the cumulative impacts of diverse wetland restoration scenarios on downstream nitrate reductions in different subbasins of the Raccoon River Watershed, Iowa, USA, and spatially trace their relative effects downstream. Our simulated results underscore previous work demonstrating that the total area of wetlands and the wetland-catchment-to-wetland area ratio are

SUBMITTER: Forgrave R 

PROVIDER: S-EPMC11568908 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature