Wetlands mitigation evaluation vegetation studies : Final report to the city of Norfolk

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https://scholarworks.wm.edu/reports/961; https://scholarworks.wm.edu/cgi/viewcontent.cgi?article=1961&context=reports
Priest, Walter I, III
Virginia Institute of Marine Science, College of William and Mary
Research and Technical Reports; Wetlands -- Virginia -- Norfolk; Wetland conservation -- Virginia -- Norfolk; Natural Resources and Conservation
report description
Coastal wetlands in Virginia represent a finite resource which is beingsubjected to ever increasing development pressures. As a means of reducingthese losses while accomodating necessary economic development, the policyof wetlands mitigation through compensation is increasingly being utilizedby both regulatory agencies and developers. This practice generallyinvolves the grading of an upland area to the appropriate elevation andplanting it with wetlands vegetation to replace a mar sh being lost inanother area.The technology to plant and grow marsh vegetation for this and otherpurposes has been well demonstrated . In as few as two growing seasons theappearance and primary productivity can be very similar to natural marshes,but the length of time necessary for them to become fully functional in anecological sense is unknown (Woodhouse et al, 1974) . This question remainsunanswered and the need still exists to conduct both short and long termstudies of planted marshes to evaluate their success at replacing thewetlands resources being lost to development. These studies need to includenot only the plant community but also the physical environment and the utilization of these areas by invertebrates, fishes, birds, and mammals (Zedler, 1984).In an effort to address some of these questions this portion of the study was designed to 1) compare the vegetative characteristics of a manmade marsh with those of similar natural marshes and 2) investigate the role of elevation and tidal inundation in the development of the marsh.