E 33oc high results results morning 20 of locations

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Unformatted text preview: high Results Results Morning: <20% of locations within home Morning: <20% of locations within home ranges ranges yield 36oC < Tb < 38oC Cost of maintaining ideal Cost of maintaining ideal Tb low Results Results Midday: Nearly all locations yield Midday: Nearly all locations yield Tb>38oC Maintaining ideal Maintaining ideal Tb impossible Lethal Lethal Tb likely Become Become inactive Why different temperatures? Why 2 different temperatures? Higher Higher-than-optimal Tb in evening optimal in evening represents Constraint represents a Constraint A limitation imposed by the environment limitation imposed by the environment Maintaining nonMaintaining a non-ideal temperature is necessary to realize benefits of activity (foraging, mating, etc.) Limits Limits placed on distribution Sceloporus Sceloporus jarrovi Sceloporus Sceloporus jarrovi Mathies Mathies & Andrews 1997. Functional Functional Ecology 11:498 Ecology 11:498-507 ALSO ALSO … Beuchat & Ellner 1987. Ecological Monographs 57:45-60 57 Sceloporus Sceloporus jarrovi Viviparous Viviparous Tb in the field (from Beuchat & Ellner 1987) in the field (from Beuchat Ellner Adult Adult males Mean Tb =...
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This document was uploaded on 03/29/2014 for the course ECOLOGY 3450 at Weber.

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