WhitefishTB: Stock and recruitment data for Lake Whitefish in Thunder Bay,...
In FSAdata: Data to Support Fish Stock Assessment ('FSA') Package

WhitefishTB

R Documentation

Stock and recruitment data for Lake Whitefish in Thunder Bay, Lake Superior, 1975-1988.

Description

Lake Whitefish (Coregonus clupeaformis) stock, recruitment, landings, and fishing mortality by year, 1975-1988.

Format

A data frame of 14 observations on the following 5 variables:

year: Year of data
ssb: Spawning stock biomass (in tonnes)
rec: Recruits (in thousands)
land: Landings (in tonnes)
fmort: Fishing related mortality (natural mortality was assumed to be 0.3)

Topic(s)

Stock-Recruit
Recruitment

Source

From Petzold, M. 1995. An historical analysis of the Lake Whitefish fisheries of Thunder Bay (Zone 1) and Whitefish Bay (Zone 34), Lake Superior. Ontario Min. of Nat. Res. unpubl. manuscript. Obtained from Ransom Myers old online database. CSV file

Examples

data(WhitefishTB)
str(WhitefishTB)
head(WhitefishTB)
op <- par(mfrow=c(1,2),pch=19)
plot(rec~year,data=WhitefishTB,type="b")
plot(rec~ssb,data=WhitefishTB)
par(op)

FSAdata documentation built on Aug. 24, 2023, 5:06 p.m.