Bibliographic Details
| Title: |
Home range of immature green turtles tracked at an offshore tropical reef using automated passive acoustic technology. |
| Authors: |
Hazel, Julia julia.hazel@jcu.edu.au, Hamann, Mark, Lawler, Ivan1 |
| Source: |
Marine Biology. Mar2013, Vol. 160 Issue 3, p617-627. 11p. |
| Subject Terms: |
*GREEN turtle, *GLOBAL Positioning System, *FORAGING behavior, *TRACKING & trailing, *HYDROPHONE, *FISH research |
| Abstract: |
Seventeen immature green turtles Chelonia mydas were tracked concurrently by automated ultrasonic receivers at a coral reef off North-Eastern Australia (September-December 2010, 16.4°S, 145.6°E). The majority ( n = 11) were tracked for the entire 100-day study, the remainder for 23-85 days. Detection data aggregated at 30-min intervals produced median 6.5-35 daily locations for individual turtles. Home range areas (95 % utilisation distribution) were ≤1 km, $$ {\bar{\text{x}}} $$ ± SD = 0.74 km ± 0.159. To the best of our knowledge, these are the first home range estimates for C. mydas foraging at offshore tropical reefs. The findings are important for conservation in revealing near-continuous presence of the same individuals within a small geographic area. Time between detections was very short (median <3 min) demonstrating passive ultrasonic technology can track multiple turtles in a foraging environment with higher temporal resolution than typically achieved by satellite tracking. [ABSTRACT FROM AUTHOR] |
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| Database: |
Academic Search Complete |
