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
Topics: Animal Geographies, Spatial Analysis & Modeling, Coastal and Marine
Keywords: HSM, ENFA, FISH, HABITAT, MODELING
Session Type: Paper
Presentation File: No File Uploaded


Through this project, comparisons will be made between two methods of habitat modeling in different software: ArcGIS (HSM) and MaxEnt (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. A habitat suitability model (HSM) will use calculated habitat suitability indices (HSI) of juvenile gag grouper (Mycteroperca microlepis) to map, using ArcGIS, spatial suitability areas in estuaries on the west Florida shelf. Ecological niche factor analysis (ENFA) will then be computed and mapped in the software MaxEnt for the same species and study area. Both models will use water quality, seagrass cover, and depth to calculate and map suitability of gag in the following estuaries in Florida: Tampa Bay and Charlotte Harbor. Model maps will be evaluated using the continuous Boyce index, receiver operating characteristic (ROC) area under the curve (AUC), and kappa index (k) in order to determine predictive accuracy since both maps display suitability on a continuous scale. The results from this comparison of two habitat associated modeling techniques will be presented.

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