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influence du climat et de la prédation sur l'utilisation de l'habitat et la ...

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67<br />

of Tc we consi<strong>de</strong>red. However, we did not mea<strong>sur</strong>e power consumption insi<strong>de</strong> <strong>de</strong>ns when<br />

Tc>O°C (Table 4.2). When comparing arboreal to terrestrial microhabitats, power consumed<br />

by mOllnts was generally 10wer in terrestrial than in arboreal microhabitats (Fig. 4.2a)<br />

although the difference was non significant (Table 4.l mo<strong>de</strong>l 3). Also, Tc interacted with the<br />

microhabitat to <strong>influence</strong> the power consllmed by the mOllnts, with the result that the power<br />

consumption increased more slowly in terrestrial than in arboreal microhabitats (Table 4.1<br />

mo<strong>de</strong>l 3) when Tc <strong>de</strong>creased. Finally, when comparing open and covered microhabitats, the<br />

power consllmed by mOllnts was generally 10wer in covered than in open microhabitats<br />

(Table 4.1 mo<strong>de</strong>l 4, Fig. 4.2b). However, Tc interacted with the microhabitat to <strong>influence</strong> the<br />

power consumed by the mounts so that the power consumption increased more slowly in<br />

open than in covered microhabitats (Table 4.1 mo<strong>de</strong>l 4) when Tc <strong>de</strong>creased. At cold<br />

temperatures (TcO°C, we used this value as an<br />

approximation for calcu<strong>la</strong>ting power consumed in non-<strong>de</strong>n microhabitats as a percentage<br />

of power consumed in "<strong>de</strong>n"

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