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Title: Floristic index for establishing assessment standards : a case study for Northern Ohio
Authors: Andreas, Barbara K.
Lichvar, Robert
Keywords: Coefficient of conservatism
Exotic species
Natural areas assessment
Environmental management
Ecosystem management
Wetland plants
Floristic Quality Assessment System
Publisher: U.S. Army Engineer Waterways Experiment Station
Series/Report no.: Technical Report (Wetlands Research Program (U.S.)) ; no. Technical Report WRP-DE-8
Abstract: The Floristic Quality Assessment System was developed as a tool to provide a numerical value (Floristic Quality Assessment Index) for a natural area evaluation based on plant species present. The index allows for objective numerical comparison of two unrelated plant community types. A numerical rating, called the coefficient of conservation was assigned to 2,063 species of plants and 30 interspecific hybrids (Appendix A). Appendix A contains a checklist of the vascular flora of 31 Ohio counties, including those counties present within the Buffalo District of the U.S. Army Corps of Engineers. Native species were assigned coefficient of conservatism values of 0 to 10. The rank of 0 was assigned to native taxa that are opportunistic invaders of natural areas and those that are typically part of ruderal communities. Rankings of 9 to 10 were used for those taxa that exhibit relatively high degrees of fidelity to a narrow range of synecological parameters. All alien (nonnative) taxa were assigned a value of 0. The Floristic Quality Assessment Index (I) can be determined for any natural area from the tabulation of the coefficient of conservatism values. A higher index value expresses a natural area containing mostly native species, whereas a lower index value reflects human disturbance by taking into account the presence of alien (nonnative) taxa.
Description: Technical Report
Gov't Doc #: Technical Report WRP-DE-8
Rights: Approved for public release; distribution is unlimited.
Size: 89 pages
Types of Materials: PDF
Appears in Collections:Technical Report

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