Consumption of prey by Walleye.

Consumption of prey by Walleye (Sander vitreus) at different prey densities.

Format

A data frame of 23 observations on the following 2 variables:

PreyDensity

Density of prey (mg per g per day).

FoodConsump

Food consumption by predator (mg per cubic meter)

Source

From Figure 3 in Madenjian, C.P., and S.R. Carpenter. 1991. Individual-based model for growth of young-of-the-year walleye: A piece of the recruitment puzzle. Ecological Applications 1:268-279. Data were originally from Swenson, W. A. 1977. Food consumptions of walleye (Stizostedion vitreum vitreum) and sauger (S. canadense) in relation to food availability and physical conditions in Lake of the Woods, Minnesota, Shagawa Lake, and western Lake Superior. Journal of the Fisheries Research Board of Canada 34:1643-1654. CSV file

Topic(s)

• Nonlinear modeling

Examples

data(WalleyeConsumption)
str(WalleyeConsumption)
#> 'data.frame':	20 obs. of  2 variables:
#>  $ PreyDensity: num  24.4 19.5 83 58.6 312.6 ...
#>  $ FoodConsump: num  7.41 11.85 13.91 16.38 17.28 ...
head(WalleyeConsumption)
#>   PreyDensity FoodConsump
#> 1        24.4        7.41
#> 2        19.5       11.85
#> 3        83.0       13.91
#> 4        58.6       16.38
#> 5       312.6       17.28
#> 6       195.4       19.34
plot(FoodConsump~PreyDensity,data=WalleyeConsumption,pch=16)