Definition of the problem of estimating fish abundance over an area from acoustic line-transect measurements of density
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http://hdl.handle.net/11250/104723Utgivelsesdato
1990Metadata
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The problem of acoustic abundance estimation is briefly reviewed. Under proper conditions, fish
density can be measured with high accuracy along line transects. Observed variations in fish density
consequently reflect biological variations, or inhomogeneity in spatial distribution. The particular
problem of estimating fish abundance over an area from line-transect measurements of fish density is
defined. Related problems of estimating the variance of the abundance estimate and of mapping the
spatial distribution are also defined. A partial list of candidate methods for solving the several
problems is given. Among these, the so-called spatial statistical techniques appear to be most
promising because of their exploitation of the observed spatial structure.