Sea turtle nesting in the Ten Thousand Islands of Florida

Garmestani, Ahjond S. and Percival, H. Franklin and Rice, Kenneth G. and Portier, Kenneth M. (1997) Sea turtle nesting in the Ten Thousand Islands of Florida. (Technical report - Florida Cooperative Fish and Wildlife Research Unit, 56)

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Loggerhead sea turtles (Caretta caretta) nest in numerous substrate and beach types within the Ten Thousand Islands (TTl) of southwest Florida. Nesting beach selection was analyzed on 12 islands within this archipelago. Numerous physical characteristics were recorded to identify the relatedness of these variables and determine their importance for nesting beach selection in C. caretta. These variables were chosen after evaluating the islands, conducting literature searches and soliciting personal communications. Along transects, data were collected, on the following: height of canopy, beach width, overall slope (beach slope and slope of offshore approach) and sand samples analyzed for pH, percentage of water, percentage of organic content, percentage of carbonate and particle size (8 size classes). Data on ordinal aspect of beaches and beach length were also recorded and included in the analysis. All of the variables were analyzed by tree regression, incorporating the nesting data into the analysis. In the TTl, loggerheads appear to prefer wider beaches (p< 0.001; R2 = 0.56) that inherently have less slope, and secondarily, wider beaches that have low amounts of carbonate (p< O.00 1). In addition, C. caretta favors nest sites within or in close proximity to the supra-littoral vegetation zone of beaches in the TTl (p< 0.001). (86 page document)

Item Type: Monograph or Serial Issue
Title: Sea turtle nesting in the Ten Thousand Islands of Florida
Personal Creator/Author:
Garmestani, Ahjond S.
Percival, H. Franklin
Rice, Kenneth G.
Portier, Kenneth M.
Series Name: Technical report - Florida Cooperative Fish and Wildlife Research Unit
Number: 56
Date: 1997
Latitude: 25.8587
Longitude: -81.4818
Issuing Agency: Florida Cooperative Fish and Wildlife Research Unit
Additional Information: Completed for U.S. Fish and Wildlife Service & National Park Service
Uncontrolled Keywords: Loggerhead sea turtles; Caretta caretta; Ten Thousand Islands; Florida; nesting
Subjects: Biology
Item ID: 1074
Depositing User: Stephanie Haas
Date Deposited: 29 Apr 2008 00:35
Last Modified: 29 Sep 2011 21:11

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