Does the telemetry technology matter? Comparing estimates of aquatic animal space-use generated from GPS-based and passive acoustic tracking

Dwyer, Ross G., Campbell, Hamish A., Irwin, Terri R. and Franklin, Craig E. (2015) Does the telemetry technology matter? Comparing estimates of aquatic animal space-use generated from GPS-based and passive acoustic tracking. Marine and Freshwater Research, 66 7: 654-664. doi:10.1071/MF14042


Author Dwyer, Ross G.
Campbell, Hamish A.
Irwin, Terri R.
Franklin, Craig E.
Title Does the telemetry technology matter? Comparing estimates of aquatic animal space-use generated from GPS-based and passive acoustic tracking
Journal name Marine and Freshwater Research   Check publisher's open access policy
ISSN 1323-1650
1448-6059
Publication date 2015-02-04
Year available 2015
Sub-type Article (original research)
DOI 10.1071/MF14042
Volume 66
Issue 7
Start page 654
End page 664
Total pages 11
Place of publication Clayton, VIC, Australia
Publisher CSIRO Publishing
Collection year 2016
Language eng
Formatted abstract
Underwater passive acoustic (PA) telemetry is becoming the preferred technology for investigating animal movement in aquatic systems; however, much of the current statistical tools for telemetry data were established from global positioning system (GPS)-based data. To understand the appropriateness of these tools for PA telemetry, we dual-tagged free-ranging aquatic animals that exist at the air-water interface (Crocodylus porosus, n = 14). The location of each animal was simultaneously recorded over a 3-month period by fixed acoustic receivers and satellite positioning. Estimates of minimum travel distance and home range (HR) were then calculated from the PA and GPS datasets. The study revealed significant disparity between telemetry technologies in estimates of minimum travel distance and HR size. Of the five HR measures investigated, the linear distance measure produced the most comparable estimates of HR size and overlap. The kernel utilisation distribution with a reference smoothing parameter function and ad hoc function, however, produced comparable estimates when raw acoustic detections were grouped into periods when animals were within and between receiver detection fields. The study offers guidelines on how to improve the accuracy and precision of space-use estimates from PA telemetry, even in receiver arrangements with large areas of non-detection. 
Keyword Dual-tagging
Electronic tagging
Home-range
Kernel
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online 4 February 2015

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Biological Sciences Publications
 
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Created: Mon, 09 Mar 2015, 18:41:57 EST by Ross Dwyer on behalf of School of Biological Sciences