ECOL 3505H Lecture Notes - Lecture 7: Rodent, Competitive Exclusion Principle, Positive Feedback
31 Aug 2016
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Document Summary
Taking the hyper-souped model for a spin: pawar et al. Consumption and search rates are higher overall in 3d. Consumption and search rates increase faster with consumer size in 3d. Increase in search rate linked to body size is not sufficient to explain consumption rate. Prey are more likely to be limited by their predators in 3d. Predators don"t eat just one type of prey and they move around during their lifetime. Shifts in diet and related to what is available in the environment. Each item i in a diet has a certain amount of energy ei. Example: hare is more energetically favorable than a rat. Each item i in a diet has a certain handling time, hi. The energetic return from item i is thus ei/hi. So if a lynx sees a rodent it has to make a decision to eat it or not. Average energetic return from the whole diet is: e/(t*s+h)
