An article in Oikos: A Journal of Ecology [Regulation of Root Vole Population Dynamics by Food Supply

Question:

An article in Oikos: A Journal of Ecology [€œRegulation of Root Vole Population Dynamics by Food Supply and Predation: A Two-Factor Experiment€ (2005, Vol. 109, pp. 387€“395)] investigated how food supply interacts with predation in the regulation of root vole (Microtus oeconomus Pallas) population dynamics. A replicated two-factor field experiment manipulating both food supply and predation condition for root voles was conducted. Four treatments were applied: ˆ’P, +F (no-predator, food-supplemented); +P, +F (predator-access, food-supplemented); ˆ’P, ˆ’F (no-predator, nonsupplemented); +P, ˆ’F (predator-access, food-supplemented). The population density of root voles (voles ha^ˆ’1) for each treatment combination follows.

Food Supply Predation (P) -1 (F) Replicates 88.589 114.059 200.979 97.079 89.089 47.959 +1 +1 +1 78.759 56.949 65.439 40