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Mackerel data from the Spanish survey
These data were recorded by a Spanish survey, as part of a multi-country
survey of the abundance of mackerel eggs off the coast of north-western
Europe, in 1992.
The variables are:
Density: egg density
smack.lat: latitude of sampling position
smack.long: longitude of sampling position
smack.depth: bottom depth
Temperature: surface temperature
D200: distance from the 200m depth contour line
Source: Background to the survey and the data are provided by
Watson et al. (1992), Priede and Watson (1993) and
Priede et al (1995). Borchers et al (1997) describe an analysis
of the data.
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