Unformatted text preview: species, but rather distinguished by return per unit handling time -- see points 2) & 4) below) 2) Foraging time consists of two mutually exclusive categories : search time (for all acceptable prey types) and handling time (including pursuit once encountered, plus capture & processing; varies by prey type) 3) Prey items (not necessarily equal to individual organisms -- e.g., handful of berries, net-full of shrimp) are encountered singly and in uncorrelated fashion : simultaneous search assumption 4) Forager can rank all prey types along single dimension of value per unit handling time (a.k.a. "post-encounter return rate") 5) Goal is to harvest set of prey types which will maximize the overall return rate (i.e., Total Harvest / Total Foraging Time, the latter consisting of search time + sum of handling times) Given these assumptions, how would a forager determine the optimal range of prey types to harvest in any given situation?...
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- Fall '10
- Anthropology, Optimal foraging theory, prey types, Optimal prey choice