Improving population estimates by quantifying diving and surfacing patterns: A dugong example
Article first published online: 7 MAY 2013
© 2013 Society for Marine Mammalogy
Marine Mammal Science
Volume 30, Issue 1, pages 348–366, January 2014
How to Cite
Hagihara, R., Jones, R. E., Grech, A., Lanyon, J. M., Sheppard, J. K. and Marsh, H. (2014), Improving population estimates by quantifying diving and surfacing patterns: A dugong example. Marine Mammal Science, 30: 348–366. doi: 10.1111/mms.12041
- Issue published online: 25 DEC 2013
- Article first published online: 7 MAY 2013
- Manuscript Accepted: 25 MAR 2013
- Manuscript Received: 17 OCT 2012
- Australian Marine Mammal Centre
- School of Earth and Environmental Sciences
- Marine and Tropical Biology
- Graduate Research School at James Cook University
- Sea World Australia
- Project Aware
- Winifred V Scott Foundation
- anonymous donor
Appendix S1. A schematic diagram of preprocessing dive data: (A) raw data showing shifts in zero-reading calibrated by zero-offsetting the surface level and a spike at 10:17 smoothed, and (B) sub-sampled dive records collected within 5 min of a GPS or QFP fix (total of 10 min, 5 min before and after a fix). The horizontal line (-) at the time of each fix represents the estimated water depth.
Appendix S2. Proportions of time dugongs spent in the detection zones (A) 0–1.5 m and (B) 0–2.5 m over seagrass meadows and (C) 0–1.5 m and (D) 0–2.5 m in offshore waters. Each animal is represented by a unique symbol.
Appendix S3. Specifications of generalized linear mixed models (GLMMs) using Gaussian Hermite Quadrature estimation.
Appendix S4. Outputs of generalized linear mixed models (GLMMs) using Gaussian Hermite Quadrature estimation.
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