Consumption of prey by Walleye.
Consumption of prey by Walleye (Sander vitreus) at different prey densities.
A data frame of 23 observations on the following 2 variables:
Density of prey (mg per g per day).
Food consumption by predator (mg per cubic meter)
Nonlinear modeling
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. [Madenjian et al. (1991) was (is?) from http://www.esajournals.org/doi/abs/10.2307/1941756. Swenson (1977) was (is?) from http://www.nrcresearchpress.com/doi/abs/10.1139/f77-229?journalCode=jfrbc.]
data(WalleyeConsumption) str(WalleyeConsumption) head(WalleyeConsumption) plot(FoodConsump~PreyDensity,data=WalleyeConsumption,pch=16)
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