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Two recent United States (U.S.) Supreme Court decisions severely curtailed federal protection for isolated wetlands (i.e., those completely surrounded by uplands). However, the true extent of the wetlands affected and hence the implications of the decisions are unknown. Best professional judgment from almost a decade ago estimated ≤20 % of contiguous U.S.(More)
There has been an increasing interest in characterizing and mapping isolated depressional wetlands due to a 2001 U.S. Supreme Court decision that effectively removed their protected status. Our objective was to determine the utility of satellite remote sensing to accurately detect isolated wetlands. Image segmentation and object-oriented analysis were(More)
The goal of this research was to determine the utility of subpixel processing of multi-temporal Landsat Enhanced Thematic Mapper Plus (ETM+) data for the identification and mapping of isolated wetlands ≥ 0.20 ha (0.50 acres) in Cuyahoga County, Ohio. Segmentation and object-oriented analysis of Landsat ETM+ was used to map forested and emergent marsh(More)
Denitrification dynamics in “geographically isolated wetlands” (GIWs) may provide a link between GIWs and aquatic systems by converting N to other end products (e.g., N2, N2O, etc.), protecting downstream waters from excessive N. We compared GIW ambient and amended denitrification rates and soil/water covariate relationships in areas of two ecoregions. The(More)
The translocation of phosphorus (P) from terrestrial landscapes to aquatic bodies is of concern due to the impact of elevated P on aquatic system functioning and integrity. Due to their common location in depressions within landscapes, wetlands, including so-called geographically isolated wetlands (GIWs), receive and process entrained P. The ability of(More)
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