Non-floodplain Wetlands Affect Watershed Nutrient Dynamics: A Critical ReviewClick to copy article linkArticle link copied!
- Heather E. Golden*Heather E. Golden*H. Golden. E-mail: [email protected]; Tel.: +1 513 569 7773.National Exposure Research Laboratory, U.S. Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268, United StatesMore by Heather E. Golden
- Adnan RajibAdnan RajibOak Ridge Institute for Science and Education, c/o Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268, United StatesMore by Adnan Rajib
- Charles R. LaneCharles R. LaneNational Exposure Research Laboratory, U.S. Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268, United StatesMore by Charles R. Lane
- Jay R. ChristensenJay R. ChristensenNational Exposure Research Laboratory, U.S. Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268, United StatesMore by Jay R. Christensen
- Qiusheng WuQiusheng WuDepartment of Geography, University of Tennessee, Knoxville, Tennessee 37996, United StatesMore by Qiusheng Wu
- Samson MengistuSamson MengistuNational Research Council, National Academy of Sciences, c/o Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268, United StatesMore by Samson Mengistu
Abstract

Wetlands have the capacity to retain nitrogen and phosphorus and are thereby often considered a viable option for improving water quality at local scales. However, little is known about the cumulative influence of wetlands outside of floodplains, i.e., non-floodplain wetlands (NFWs), on surface water quality at watershed scales. Such evidence is important to meet global, national, regional, and local water quality goals effectively and comprehensively. In this critical review, we synthesize the state of the science about the watershed-scale effects of NFWs on nutrient-based (nitrogen, phosphorus) water quality. We further highlight where knowledge is limited in this research area and the challenges of garnering this information. On the basis of previous wetland literature, we develop emerging concepts that assist in advancing the science linking NFWs to watershed-scale nutrient conditions. Finally, we ask, “Where do we go from here?” We address this question using a 2-fold approach. First, we demonstrate, via example model simulations, how explicitly considering NFWs in watershed nutrient modeling changes predicted nutrient yields to receiving waters–and how this may potentially affect future water quality management decisions. Second, we outline research recommendations that will improve our scientific understanding of how NFWs affect downstream water quality.
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