Ecological Archives --A3

Ecological Archives --A3

B. Smit, C. T. Harding, P. A. R. Hockey, and A. E. McKechnie. 2013. Adaptive thermoregulation during summer in two populations of an arid-zone passerine. Ecology 94:1142–1154. http://dx.doi.org/10.1890/12-1511.1

Appendix C. Final models describing body temperature and behavior in White-browed Sparrow-Weavers (Plocepasser mahali).

Table C2. Final models showing the most important predictors of body temperature (mean and a maximum T_b, both absolute and as a function of modal body temperature) and behavior (foraging behaviors and heat dissipation) in White-browed Sparrow-Weavers (Plocepasser mahali) during the warmest part of the day (1200h – 1800h) at Tswalu Kalahari Reserve (semi-desert) and Wildsgenot Game Ranch (desert). Study period and vapor pressure deficit (D) were not included in behavioral models. All of these predictors and interactions were significantly related the respective response variables (see text for details).

Response:	Final model
Body temperature	T_air + D + Time + Study period + T_airD + Time T_airD + Study period T_air*D
Foraging/resting behavior	T_air + Time + T_air*time
Foraging site (sun/shade)	T_air + Time + T_air*time
Panting	T_air + Time + T_airTime + Activity T_air*Time
Wing-spreading behavior	T_air + Time

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