Design and field methods for sighting surveys of cetaceans in coastal and riverine habitats
Article first published online: 18 MAR 2008
© 2008 The Authors
Volume 38, Issue 1, pages 19–49, January 2008
How to Cite
DAWSON, S., WADE, P., SLOOTEN, E. and BARLOW, J. (2008), Design and field methods for sighting surveys of cetaceans in coastal and riverine habitats. Mammal Review, 38: 19–49. doi: 10.1111/j.1365-2907.2008.00119.x
- Issue published online: 18 MAR 2008
- Article first published online: 18 MAR 2008
- Submitted 5 November 2007 ; returned for revision 19 December 2007; accepted 28 January 2008
- 1Dolphins and porpoises in coastal and/or riverine habitats face serious conservation threats, yet surveys of their abundance are often especially difficult due to the challenges imposed by the habitats. Because many of these species occur in developing countries, lack of resources imposes a further set of challenges.
- 2We offer advice on designing and conducting line-transect surveys with a focus on sound, practical, design rather than analytical sophistication, and we attempt, where possible, to offer simple, inexpensive solutions.
- 3We guide the reader through the questions of what kind of survey should be done, whether by boat or aircraft, and we discuss ways to avoid bias and increase precision.
- 4Our treatment of field methods focuses especially on robust, but low-cost, approaches. We provide two case studies to illustrate the implementation of these ideas.