Stock and recruitment data for Northern Pike from Lake Windermere, 1944-1981.
Stock and recruitment data for Northern Pike (Esox lucius) from Lake Windermere, 1944-1981.
A data frame of 75 observations on the following two variables:
Year
Female biomass (kg)
Number at age-2
Basin of Windermere (North or South)
Temperature degree-days over 14C
Stock-Recruit
Recruitment
Stock values were originally reported in 1000s of kgs and recruits were originally recorded in tens of numbers. Thus, plots look very discrete.
From table 3 in Kipling, C. 1983. Changes in the population of pike (Esox lucius) in Windermere from 1944 to 1981. Journal of Animal Ecology 52:989-999.
data(PikeWindermere) str(PikeWindermere) head(PikeWindermere) op <- par(mfrow=c(2,2),pch=19) plot(recruits~year,data=PikeWindermere,subset=basin=="North",main="North") plot(recruits~stock,data=PikeWindermere,subset=basin=="North",main="North") plot(recruits~year,data=PikeWindermere,subset=basin=="South",main="South") plot(recruits~stock,data=PikeWindermere,subset=basin=="South",main="South") par(op)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.