Menhaden1 | R Documentation |
Estimated catch-at-age for Gulf Menhaden (Brevoortia patronus), 1964-2004 from the reduction fishery in the U.S. Gulf of Mexico.
A data frame with 41 observations on the following 7 variables.
Year of capture.
Estimated catch (millions) of age-0 fish.
Estimated catch (millions) of age-1 fish.
Estimated catch (millions) of age-2 fish.
Estimated catch (millions) of age-3 fish.
Estimated catch (millions) of age-4 fish.
Estimated catch (millions) of age-5 fish.
Estimated catch (millions) of age-6 fish.
Mortality
Catch curve
From Table 2 in Vaughan, D.S., K.W. Shertzer, and J.W. Smith. 2007. Gulf menhaden (Brevoortia patronus) in the U.S. Gulf of Mexico: Fishery characteristics and biological reference points for management. Fisheries Research 83:263-275. CSV file
data(Menhaden1)
str(Menhaden1)
head(Menhaden1)
ages <- 0:6
# Extract one year, delete year column (the -1), and transpose to be a vector
ct <- t(Menhaden1[Menhaden1$year==1974,-1])
plot(ct~ages,pch=16,type="b",xlab="Age",ylab="Est. Catch (Millions)",main="year==1974")
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