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Army Corps of Engineers Waterways Experiment Station, Vicksburg, MS, USA. A guidebook for application of hydrogeomorphic assessments to riverine wetlands. Wetlands Research Program Technical Report WRP-DE-4.īrinson, M.M., F.
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A hydrogeomorphic classification for wetlands. Landscape properties of pocosins and associated wetlands. Ecological Applications 6:69–76.īrinson, M.M. The role of reference wetlands in functional assessment and mitigation. Natural Areas Journal 9:246–263.īrinson, M. Longleaf pine communities of the West Gulf coastal plain. Hafner Publishing, New York, NY, USA.īridges, E.L. Deciduous Forests of Eastern North America. Dover Publications Reprint, New York, NY, USA.īraun, E.L. Travels Through North and South Carolina, Georgia, East and West Florida. Benjamin/Cummings Publishing Company, Menlo Park, CA, USA.īartram, W. North Carolina Geologic Survey and Economic Survey 24:1–176.īarbour, M.G., J.H. North Carolina Geologic Survey 5:1–128.Īshe, W.W.
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The førests, forest lands, and forest products of eastern North Carolina. Scorch and mortality after a summer burn in loblolly pine. The ratio of wetland area restored to wetland area altered by a project impact (compensatory mitigation ratio) varies among functions and is influenced by (1) the magnitude to which any given function occurs at a project site both before and after the site is altered, (2) the magnitude to which any given function occurs at a compensatory mitigation site both before and after restoration is applied, and (3) the rate at which any given function is restored.Ībrahamson, W.G. This minimum area can be determine by dividing the degree to which a function is reduced through project alteration by the degree to which a function is increased through restoration. We also illustrate how HGM assessment can be used to determine the minimum area over which restoration should be applied to achieve a no-net-loss in function objective. We chose a subset of the 19 reference sites to demonstrate how HGM assessment can be used to measure ecosystem functions before and after a project site is altered and the degree to which ecosystem restoration can compensate for a reduction in functions caused by a project’s impact. We demonstrate the hydrogeomorphic (HGM) assessment procedure by identifying ecological functions performed by mineral soil wet flats, obtaining quantitative field data from 19 wet flats (reference sites) in southeastern North Carolina, and modeling wetland functions using variables derived from those field data. This study demonstrates an approach for rapidly collecting quantitative field data on reference wetland sites and using those data to assess functions (ecological processes) in wetlands.