Egg deposition and relative abundance of age-3 Lake Huron Bloaters (Coregonus hoyi) by year, 1981-1996.
Format
A data frame of 16 observations on the following 3 variables:
- year
Year of data (1981-1996)
- eggs
Millions of eggs deposited
- age3
Relative abundance of age-3 fish
Source
From (approximately) Figure 7 of Schaeffer, J.S. 2004. Population dynamics of bloaters Coregonus hoyi in Lake Huron, 1980-1998. Ann Zool Fennici. 41:271-279. CSV file
Examples
data(BloaterLH)
str(BloaterLH)
#> 'data.frame': 16 obs. of 3 variables:
#> $ year: int 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 ...
#> $ eggs: num 0.0402 0.0602 0.1205 0.1807 0.7229 ...
#> $ age3: num 5.14 154.29 65.14 102.86 102.86 ...
head(BloaterLH)
#> year eggs age3
#> 1 1981 0.0402 5.143
#> 2 1982 0.0602 154.286
#> 3 1983 0.1205 65.143
#> 4 1984 0.1807 102.857
#> 5 1985 0.7229 102.857
#> 6 1986 0.5321 200.571
op <- par(mfrow=c(1,2),pch=19)
plot(eggs~year,data=BloaterLH,type="l")
plot(eggs~age3,data=BloaterLH)
par(op)