DarterOnt: Ages and lengths of Channel Darters from two locations.

Description Format Topic(s) Note Source Examples

Description

Assigned ages (from otoliths), total length, and collection location of Channel Darter (Percina copelandi).

Format

A data frame of 54 observations on the following 3 variables:

age

Otolith age-at-capture (years).

tl

Total length (nearest 0.1 mm) at capture.

river

Location of capture (Salmon or Trent Rivers).

Topic(s)

Note

The original author used a linear model to describe the relationship between length and age.

Source

From Figure 2 of Reid, S.M. Age estimates and length distributions of Ontario channel darter (Percina copelandi) populations. Journal of Freshwater Ecology 19:441-444.

Examples

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data(DarterOnt)
str(DarterOnt)
head(DarterOnt)
op <- par(mfrow=c(1,2),pch=19)
plot(tl~age,data=DarterOnt,subset=river=="Salmon",main="Salmon R.")
plot(tl~age,data=DarterOnt,subset=river=="Trent",main="Trent R.")
par(op)

droglenc/FSAdata documentation built on June 5, 2019, 4:11 a.m.