Using Normal Color, Six Inch Resolution Digital Ortho-Photographs In Mapping Pomacea paludosa Habitat in Grassy Waters Preserve as a Natural Resource Management Tool for the Endangered Florida Raptor, Rostrhamus sociabilis plumbeus

Normal color digital ortho-photos with six inch resolution were used to test the
feasibility of mapping the habitat of the Florida apple snail, the exclusive food
source of the Endangered Florida snail kite. Several remote sensing techniques
such as unsupervised and supervised classifications are evaluated and accuracy
assessed. While the overall ability to classify apple snail habitat is significant,
sparse areas of emergent vegetation which are preferred foraging areas for the kite
were excluded by the classification and needed to be re-introduced for further
analysis. The methodology can be repeated to measure change over time since the
NC imagery of Grassy Waters Preserve is acquired frequently. Additionally, three
spectral levels of density abundance of wetland graminoid species that denote apple
snail habitat were examined for mapping potential on the imagery. A site suitability
analysis using a weighed overlay tool in ArcGIS is suggested as a means to include
numerous other key factors influencing habitat selection by the snail kite in a
mapping project.