2004 UC Proceedings Abstract
GIS Analysis of Common Snook Movement Patterns in Southeast Florida Track: Ocean, Coastal, and Marine Resources Author(s): Jesse Lewis, Alexis Trotter, Warren Mitchell, James Whittington Along the southeast coast of Florida, researchers tagged 19,410 common snook, Centropomus undecimalis, between 1983 and 1997. Through October 2001, scientists recaptured 4,464 of these tagged fish and recorded enough information to determine seasonal movement patterns. These patterns were determined by calculating the distance and direction snook traveled along the most direct inshore path. To accomplish this, a network data model was created using a combination of ArcGIS, ArcEdit, and ArcPlot. In addition to the network analysis, temporal mapping was performed using ArcGIS Tracking Analyst. Results from the analysis and mapping further exemplify fisheries biologists' earliest estimates of movement patterns. During the late April through early October (spawning season), adult snook were typically reported in major inlets and along adjacent beaches. From November through March, snook were reported inland in lower-salinity estuaries and freshwater habitats. Jesse Lewis Florida Marine Research Institute Coastal and Marine Resource Assessment 100 8th Ave SE St. Petersburg , FL 33701 US Phone: 727-896-8626 Fax: 727-893-1679 E-mail: jesse.lewis@fwc.state.fl.us Alexis Trotter Florida Marine Research Institute Fisheries Biology 100 8th Ave SE Saint Petersburg , FL 33701 US Phone: 727-896-8626 E-mail: alexis.trotter@fwc.state.fl.us Warren Mitchell Florida Marine Research Institute Fisheries Biology 100 8th Ave SE Saint Petersburg , FL 33701 US Phone: 727-896-8626 E-mail: wamitch@hotmail.com James Whittington Florida Marine Research Institute Fisheries Biology P.O. Box 3478 Tequesta , FL 33469 US Phone: 561-575-5408 E-mail: jim.whittington@fwc.state.fl.us |
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