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Calculating Foraging Energy Balance: Solving for Net Change in Energy Level
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[QUOTE="haruspex, post: 4499797, member: 334404"] The wording is certainly confusing. I [I]think[/I] there are two time variables implied. One is for a period of existence, while the other is for a period of foraging within that. The first mention of 't' is for existence, while the rest are for foraging (the period of existence now being taken as 1). Thus, although B is described as a rate, it appears in the equation as a quantity of energy (having been multiplied by a unit period of existence). To untangle this, let's introduce T as a period of existence, and let h be the fraction of time spent foraging. Thus t = hT. Presumably the energy intake rate, j, only applies while foraging. We now have that the average rate of expending energy is B+hf, while the average rate of obtaining energy is hj. To put it another way, in time T, energy intake is jt = hjT, while energy expenditure is BT+ft = BT + hfT. Does that help? [/QUOTE]
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Calculating Foraging Energy Balance: Solving for Net Change in Energy Level
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