npf: npf fishery catch data from Northern Prawn Fishery 1970-1992

In MQMF: Modelling and Quantitative Methods in Fisheries

npf fishery catch data from Northern Prawn Fishery 1970-1992

Description

npf is fishery catch data from Australia's Northern Prawn Fishery from 1970 to 1992 summarized from Robins and Somers, 1994. It contains the catches, in tonnes, of banana prawns (Penaeus merguiensis and P. indicus), tiger prawns (brown - P. esculentus) and (grooved - P. semisulcatus), endeavour prawns, (Metapenaeus endeavouri and M. ensis), king prawns (P. latisulcatus and P. longistylus), the number of vessels fishing, and the annual effort as boat-days.

Format

A data.frame of fisheries data

year

the fishing year from 1970 - 1992.

banana

banana prawn catches, tonnes.

tiger

tiger prawn catches, tonnes.

endevaour

endeavour prawn catches, tonnes.

king

king prawn catches, tonnes.

boats

the number of vessels fishing in that year.

boatday

the total annual effort as boatdays.

Subjects

• correlation analysis and regression

• Bootstrap percentile confidence intervals

• Model residuals

Source

Robins, C. and I. Somers (1994) Appendix A. Fishery Statistics pp 141 - 164 in Pownall, P.C. (ed.) Australia's Northern Prawn Fishery: The first 25 years. NPF25. Cleveland, Australia. 179p.

Examples

 data(npf)
 npf
 oldpar <- par(no.readonly=TRUE)
 plot1(npf$year,npf$tiger,xlab="Year",ylab="Tonnes",lwd=2)
 lines(npf$year,npf$endeavour,col=2,lwd=2)
 legend("topleft",c("Tiger","Endeavour"),col=c(1,2),lwd=3,
        bty="n",cex=1.5)
 par(oldpar)

MQMF documentation built on Sept. 8, 2023, 5:14 p.m.