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15 - Energetic linkages between short-term and long-term effects of whale-watching disturbance on cetaceans

An example drawn from northeast Pacific resident killer whales

from Part III - Ecological dimensions of whale-watching

Published online by Cambridge University Press:  05 April 2014

By
David E. Bain ,
Rob Williams  and
Andrew W. Trites
Edited by
James Higham ,
Lars Bejder  and
Rob Williams
David E. Bain
Affiliation:
University of Washington
Rob Williams
Affiliation:
University of St Andrews, Scotland
Andrew W. Trites
Affiliation:
University of British Columbia
James Higham
Affiliation:
University of Otago, New Zealand
Lars Bejder
Affiliation:
Murdoch University, Western Australia
Rob Williams
Affiliation:
University of St Andrews, Scotland
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Summary

Introduction

Many studies have demonstrated short-term behavioural responses by whales and dolphins in the presence of vessels, but the population-level implications of such changes are poorly understood (Lusseau, 2003, 2004; Bejder et al., 2006a; Lusseau & Bejder, 2007). One means for developing such an understanding is to use a modelling framework such as the Population Consequences of Acoustic Disturbance (PCAD) model. PCAD identifies four levels at which data can be collected, and allows for estimates of modelling parameters at one level to be based on measured data at another level (National Research Council, 2005).

The first level contains short-term behavioural responses, such as those that have been the typical focus of studies on effects of whale-watching. Effects vary within and between species, and include changes in respiration patterns, surface active behaviours, swimming velocity, vocal behaviour, activity state, inter-individual spacing, wake riding, approach and avoidance, and displacement from habitat. Collisions may result in injury or death (Wells & Scott, 1997; Laist et al., 2001). More detailed reviews of vessel effects can be found in Lien (2001) and Ritter (2003).

Type
Chapter
Information
Whale-watching
Sustainable Tourism and Ecological Management
 , pp. 206 - 228
Publisher: Cambridge University Press
Print publication year: 2014

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