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Catch-at-age of Flathead Catfish from three southeastern rivers.

Source: R/FHCatfish.R
FHCatfish.Rd

Numbers of Flathead Catfish (Pylodictis olivaris) captured by electrofishing in three rivers -- Coosa River, AL; Ocmulgee River, GA; and Satilla River, GA.

Format

A data frame of 39 observations on the following 3 variables:

river

Location of collection (Coosa, Ocmulgee, and Satilla)

age

Age (years) assigned from otolith

abundance

Number of captured fish with boat electrofishing

Source

From (approximately) Figure 3 in Sakaris, P.C., E.R. Irwin, J.C. Jolley, and D. Harrison. 2006.Comparison of Native and Introduced Flathead Catfish Populations in Alabama and Georgia: Growth, Mortality, and Management. North American Journal of Fisheries Management 26:867-874. CSV file

Topic(s)

  • Mortality

  • Catch curve

Examples

data(FHCatfish)
str(FHCatfish)
#> 'data.frame':	39 obs. of  3 variables:
#>  $ river    : Factor w/ 3 levels "Coosa","Ocmulgee",..: 1 1 1 1 1 1 1 1 1 1 ...
#>  $ age      : int  2 3 4 5 6 7 8 9 10 11 ...
#>  $ abundance: int  25 24 18 17 29 14 5 10 15 7 ...
head(FHCatfish)
#>   river age abundance
#> 1 Coosa   2        25
#> 2 Coosa   3        24
#> 3 Coosa   4        18
#> 4 Coosa   5        17
#> 5 Coosa   6        29
#> 6 Coosa   7        14
op <- par(mfrow=c(2,2),pch=19)
plot(log(abundance)~age,data=FHCatfish,subset=river=="Coosa",main="Coosa")
plot(log(abundance)~age,data=FHCatfish,subset=river=="Ocmulgee",main="Ocmulgee")
plot(log(abundance)~age,data=FHCatfish,subset=river=="Satilla",main="Satilla")
par(op)