bycatch {UsingR}

Number of Albatrosses accidentaly caught during a fishing haul

Description

This data set from Hillborn and Mangel contains data on the number of Albatrosses accidentally caught while fishing by commercial fisheries.

Usage

data(bycatch)

Format

A data frame with 18 observations on the following 2 variables.

no.albatross

The number of albatross caught

no.hauls

Number of hauls with this many albatross caught

Details

During fishing operations non-target species are often captured. These are called “incidental catch”. In some cases, large-scale observer programs are used to monitor this incidental catch.

When fishing for squid, albatrosses are caught while feeding on the squid at the time of fising. This feeding is encouraged while the net is being hauled in, as the squid are clustered making it an opportunistic time for the albatross to eat.

Source

This is from Hilborn and Mangel, The Ecological Detective, Princeton University Press, 1997. Original source of data is Bartle.

Examples

data(bycatch)
hauls = with(bycatch,rep(no.albatross,no.hauls))