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

DarterOntR Documentation

Ages and lengths of Channel Darters from two locations.

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)

  • Growth

  • von Bertalanffy

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. CSV file

Examples

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)


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

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