FSAdata (version 0.3.0)

BullTroutRML2: Ages and lengths of Bull Trout from two Rocky Mountain lakes at two times.

Description

Assigned ages (from otoliths) and fork lengths of Bull Trout (Salvelinus confluentis) from two Rocky Mountain lakes in Alberta, CA before and after a regulation change.

source

Extracted (approximately) from Figure 2 of Parker, B.R., D.W. Schindler, F.M. Wilhelm, and D.B. Donald. 2007. https://www.researchgate.net/publication/233144141_Bull_Trout_Population_Responses_to_Reductions_in_Angler_Effort_and_Retention_Limits{Bull trout population responses to reductions in angler effort and retention limits.} North American Journal of Fisheries Management, 27:848-859.

Topic(s)

• Growth
• Von Bertalanffy growth model

concept

Growth 'Von Bertalanffy'

Examples

data(BullTroutRML2)
str(BullTroutRML2)
head(BullTroutRML2)
op <- par(mfrow=c(2,2),pch=19)
plot(fl~age,data=BullTroutRML2,subset=lake=="Harrison" & era=="1977-80",main="Harrison, 1977-80")
plot(fl~age,data=BullTroutRML2,subset=lake=="Harrison" & era=="1997-01",main="Harrison, 1997-2001")
plot(fl~age,data=BullTroutRML2,subset=lake=="Osprey" & era=="1977-80",main="Osprey, 1977-80")
plot(fl~age,data=BullTroutRML2,subset=lake=="Osprey" & era=="1997-01",main="Osprey, 1997-2001")
par(op)