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Accession Number PB2014-100873
Title Restoration Progress and Flood Disturbance at IDOT Wetland Mitigation Sites.
Publication Date Apr 2013
Media Count 40p
Personal Author G. E. Pociask J. W. Matthews
Abstract As required under Section 404 of the Clean Water Act and the Illinois Interagency Wetland Policy Act of 1989, the Illinois Department of Transportation (IDOT) has established wetlands at mitigation sites throughout Illinois to compensate for impacts to natural wetlands by road construction. One of the mechanisms for meeting regulatory obligations is to mitigate wetland impacts through restoration or creation of wetlands that provide functions similar to natural wetlands, under the federal policy goal of no net loss of wetland area and function. Progress toward restoring wetland functions is measured through the use of prescribed performance standards issued by state and federal regulatory agencies. In most cases, these performance standards contain measures of quality, health, and structure of wetland plant communities. In this study, we analyzed data collected by the Illinois Natural History Survey and the Illinois State Geological Survey during past and current site monitoring to examine the influence that flooding has on ecological mechanisms that lead to variation in the performance levels among a large number of floodplain compensatory mitigation wetlands. The goals of the analyses were to evaluate the influence that flooding has on (1) plant-community quality at the landscape scale and (2) species turnover within plant-community functional groups at wetland mitigation sites.
Keywords Biological communities
Biological recovery
Clean Water Act
Environmental impact
Illinois Department of Transportation(IDOT)
Performance evaluation
Road construction
Species diversity

Source Agency Federal Highway Administration
NTIS Subject Category 48G - Hydrology & Limnology
50B - Civil Engineering
68D - Water Pollution & Control
57H - Ecology
Corporate Author Illinois Univ. at Urbana-Champaign. Dept. of Civil and Environmental Engineering.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1403
Contract Number N/A

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