Braun, Sarah .
Predicting the distributions of two invasive exotics, Ardisia crenata and A. elliptica (Myrsinaceae).
ARDISIA crenata and Ardisia elliptica (Myrsinaceae), are two shrubs listed as invasive exotics in the state of Florida by the Florida Exotic Pest Plant Council (FLEPPC).
Occurrence records for Ardisia crenata and Ardisia elliptica were gathered from the FLEPPC database, the Florida Invasive Plants Geodatabase, and herbarium specimens. The records were georeferenced using ArcMap 9.1 software. Genetic algorithms in Desktop GARP were used to determine non-random relationships between species occurrences and environmental variables.
The rule-sets generated by Desktop GARP were used to project the future distributions of the two species onto North America. Preliminary results suggest that Ardisia crenata has potential to spread from Florida, along the Gulf coast, and into Texas. Preliminary results for Ardisia elliptica suggest this species will remain restricted to the southern half of peninsular Florida. Hawaii is also indicated as a potential area of distribution for both species and in fact both species already occur there.
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1 - Florida State University, Department of Biological Sciences, Tallahasse, Florida, 32306-1100, USA
Presentation Type: Poster:Posters for Sections
Location: Auditorium/Bell Memorial Union
Date: Tuesday, August 1st, 2006
Time: 12:30 PM