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Fish habitat modeling: A comprehensive spatio-temporal analysis of Charlotte Harbor and Tampa Bay

Authors: Matthew Spetka*, University of South Florida, Barnali Dixon, University of South Florida, Meagan Schrandt, Florida Fish and Wildlife Conservation Commission
Topics: Animal Geographies, Spatial Analysis & Modeling, Coastal and Marine
Session Type: Paper
Presentation File: No File Uploaded

A comparison of two methods of habitat modeling in different software: ArcGIS (Habitat Suitability Model - HSM) and MaxEnt (Ecological Niche Factor Analysis - ENFA). Using data collected by Fisheries Independent Monitoring (FIM), a group out of the Florida Fish and Wildlife Research Institute (FWRI), comprehensive long-term habitat suitability models will be created, individually validated, and then compared. HSM will use calculated habitat suitability indices (HSI) of juvenile gag grouper (Mycteroperca microlepis) to map, in a GIS, suitability areas in estuaries on the west Florida shelf. ENFA will be computed in the software MaxEnt and mapped in a GIS for the same species and study area. Both models will use water quality, bottom characteristics, and depth to calculate for proposed modeling in the following estuaries on the West Florida Shelf: Tampa Bay and Charlotte Harbor. Model and associated maps will be evaluated using different validation techniques including: continuous Boyce index (CBI), receiver operating characteristic (ROC) area under the curve (AUC), and kappa index (k) in order to determine the predictive accuracy of the models. The results from this comparison of two habitat associated modeling techniques will be presented.

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