TigerFlathead is a a data set arising from a south-east Australia fish survey, see Bax and Williams (1999).
The Longitude of the trawl.
The Latitude of the trawl.
Bathymetry (depth) of the trawl, taken from longitude/latitude of trawls.
The distance along the 100m depth contour. The origin is arbitrary, but is northwards of all trawls.
The swept area of the shot, giving a measure of effort.
The number of tiger flathead caught.
The total biomass of tiger flathead caught.
Bax N, Williams A (eds) (1999) Habitat and fisheries production in the South East Fishery. Final report to FRDC Project 94/040, CSIRO Marine Research, Hobart, Tasmania, Australia
Foster, S.D. and Bravington, M.V. (2013) A Poisson-Gamma Model for Analysis of Ecological Non-Negative Continuous Data. Journal of Environmental and Ecological Statistics 20: 533-552