Monitoring Loggerhead Sea Turtle (Caretta caretta) Nests in Turkey Using GIS

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Abstract:

Both the loggerhead sea turtle (Caretta caretta) and the green turtle (Chelonia mydas) live, feed, and nest in the Mediterranean, mostly on the beaches of Turkey and Greece. The greatest threat to the survival of Caretta caretta has been found to be on the sandy beaches where their lives begin. In this study, the digital terrain model (DTM) of the Iztuzu Beach in Turkey where the Caretta caretta sea turtles lay their eggs was prepared using a global positioning system (GPS) and a geographic information system (GIS). A flexible coastal geographic information system was prepared integrating the DTM with digitally processed satellite images and ground truth of the nesting area and its surroundings. Researchers, decision makers, other end users, or sea turtle experts can find and query any environmental information having a possible impact on the nesting area using a computer-based GIS database. A multidate monitoring of the nesting area allows users to extract and compare much information about the location and condition of the nests and will help researchers develop better strategies for protecting sea turtles.

Keywords: COASTAL GEOGRAPHICAL INFORMATION SYSTEM; GLOBAL POSITIONING SYSTEM; SATELLITE IMAGERY; SEA TURTLE

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/089207500263549

Publication date: April 1, 2000

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