The Significant Surface-Water Connectivity of "Geographically Isolated Wetlands"

Wetlands : the Journal of the Society of the Wetlands Scientists
Aram J K CalhounSusan C Walls

Abstract

We evaluated the current literature, coupled with our collective research expertise, on surface-water connectivity of wetlands considered to be "geographically isolated" (sensu Tiner Wetlands 23:494-516, 2003a) to critically assess the scientific foundation of grouping wetlands based on the singular condition of being surrounded by uplands. The most recent research on wetlands considered to be "geographically isolated" shows the difficulties in grouping an ecological resource that does not reliably indicate lack of surface water connectivity in order to meet legal, regulatory, or scientific needs. Additionally, the practice of identifying "geographically isolated wetlands" based on distance from a stream can result in gross overestimates of the number of wetlands lacking ecologically important surface-water connections. Our findings do not support use of the overly simplistic label of "geographically isolated wetlands". Wetlands surrounded by uplands vary in function and surface-water connections based on wetland landscape setting, context, climate, and geographic region and should be evaluated as such. We found that the "geographically isolated" grouping does not reflect our understanding of the hydrologic variability of these...Continue Reading

References

Feb 10, 2016·Proceedings of the National Academy of Sciences of the United States of America·Matthew J CohenSusan C Walls
Jan 1, 2017·Wetlands Ecology and Management·Melanie K VanderhoofLaurie C Alexander

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Citations

Dec 4, 2019·Journal of the American Water Resources Association·David M MushetMegan W Lang
Aug 7, 2018·Journal of the American Water Resources Association·Scott G LeibowitzHeather E Golden
May 1, 2019·Journal of the American Water Resources Association·C Nathan JonesCharles R Lane

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