Minke whale abundance estimation from the NASS 1987 and 2001 aerial cue–counting surveys taking appropriate account of distance estimation errors
MetadataShow full item record
Altmetrics Handle Statistics
Altmetrics DOI Statistics
We estimate the abundance of minke whales (Balaenoptera acutorostrata) from the Icelandic coastal shelf aerial surveys carried out as part of the 1987 and 2001 North Atlantic Sightings Surveys (NASS). In the case of the 1987 survey, the probability of detecting animals at distance zero (g(0)) is very close to 1 but there is substantial random measurement error in estimating distances. To estimate abundance from these data, we use methods which assume g(0)=1 but which includea distance measurement error model. In the case of the 2001 survey, measurement errors were sufficiently small to be negligible, and we use double platform methods which estimate g(0) and assume no measurement error to estimate abundance. From the 1987 survey, we estimate abundance to be 24,532 animals, with 95% CI (13,399; 44,916). From the 2001 NASS survey data, minke whale abundance is estimated to be 43,633 animals, with 95% CI (30,148; 63,149).
Borchers , D L , Pike , D G , Gunnlaugsson , T & Víkingsson , G A 2009 , ' Minke whale abundance estimation from the NASS 1987 and 2001 aerial cue–counting surveys taking appropriate account of distance estimation errors ' , NAMMCO Scientific Publications , vol. 7 . https://doi.org/10.7557/3.2708
NAMMCO Scientific Publications
Copyright (c) 2009 David L Borchers, Daniel G Pike, Thorvaldur Gunnlaugsson, Gísli A Víkingsson This is an open access article, licensed under a Creative Commons Attribution licence. License URL: http://creativecommons.org/licenses/by/3.0/
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.