https://commons.ru.ac.za/vital/access/manager/Index en-us 5 An experimental test of the allotonic frequency hypothesis to isolate the effects of light pollution on bat prey selection: https://commons.ru.ac.za/vital/access/manager/Repository/vital:40171 Thu 04 Jul 2024 09:13:12 SAST ]]> The role of ambient temperature and body mass on body temperature, standard metabolic rate and evaporative water loss in southern African anurans of different habitat specialisation https://commons.ru.ac.za/vital/access/manager/Repository/vital:73794 Thu 04 Jul 2024 09:04:07 SAST ]]> Differences in the use of surface water resources by desert birds are revealed using isotopic tracers https://commons.ru.ac.za/vital/access/manager/Repository/vital:73790 Thu 04 Jul 2024 08:20:16 SAST ]]> An oversimplification of physiological principles leads to flawed macroecological analyses https://commons.ru.ac.za/vital/access/manager/Repository/vital:73788 Thu 04 Jul 2024 06:24:27 SAST ]]> Behaviour of an alpine range-restricted species is described by interactions between microsite use and temperature https://commons.ru.ac.za/vital/access/manager/Repository/vital:73896 Sat 06 Jul 2024 09:40:59 SAST ]]> 31° South: the physiology of adaptation to arid conditions in a passerine bird. https://commons.ru.ac.za/vital/access/manager/Repository/vital:73894 Sat 06 Jul 2024 09:06:41 SAST ]]> Wand plant architecture in the Fynbos: Testing the rodent herbivory hypothesis https://commons.ru.ac.za/vital/access/manager/Repository/vital:73795 Mon 08 Jul 2024 06:48:50 SAST ]]> Multi-directional effects of warming temperatures on the reproductive success of a threatened alpine-endemic bird, and implications for conservation management https://commons.ru.ac.za/vital/access/manager/Repository/vital:73902 Mon 08 Jul 2024 06:01:02 SAST ]]> The functional significance of facultative hyperthermia varies with body size and phylogeny in birds https://commons.ru.ac.za/vital/access/manager/Repository/vital:73901 Tb, environmental heat gain and evaporative water loss rates are reduced; and M3) by storing heat via increases in Tb which reduces evaporative heat loss demands and conserves wa-ter. Although individuals may benefit from all three mechanisms during heat exposure, the relative importance of each mechanism has not been quantified among species that differ in their body size, heat toler-ance and mechanisms of evaporative heat dissipation. We measured resting metabolism, evaporative water loss and real‐time Tb from 33 species of birds representing nine orders ranging in mass from 8 to 300 g and estimated the water savings associated with each proposed mechanism. We show that facultative hyperthermia varies in its benefits among species.]]> Mon 08 Jul 2024 05:49:41 SAST ]]>