Comparison of geostatistical and random sample survey analyses of Antarctic krill acoustic data

Murray, A.W.A.. 1996 Comparison of geostatistical and random sample survey analyses of Antarctic krill acoustic data. ICES Journal of Marine Science, 53 (2). 415-421. 10.1006/jmsc.1996.0058

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Abstract/Summary

Data from the acoustic surveys of MV SA “Agulhas” and FRV “Walther Herwig”, and the 1981 RRS “John Biscoe” South Georgia acoustic survey were analysed by geostatistical methods. Estimates of mean density (g m−2) of krill and their variances are compared with published results from statistical analyses based on random sampling theory. A further high-resolution geostatistical analysis of the MV SA “Agulhas” (ping-by-ping) data set of the density of each individual aggregation is also presented. These analyses illustrate the problems of applying geostatistical methods to data from highly aggregated species which can show marked skewness in their histogram of density.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1006/jmsc.1996.0058
Programmes:	BAS Programmes > Pre 2000 programme
ISSN:	10543139
Additional Keywords:	acoustic survey design, Antarctic krill biomass, geostatistics, spatial pattern, stock assessment
Date made live:	22 Nov 2016 09:02 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/515213

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