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Evaporative water loss (EWL) relative to water vapour pressure deficit, of little red kalutas (Dasykaluta rosamondae), over a range of ambient humidities (RHs) and different ambient temperatures (Ta; values in figure). Values from this study (circles) are for four RH at three Ta; values from Withers & Cooper [17] (diamonds) are for Ta from 11°C to 38°C, at low RH. A simple physical model of evaporation predicts no effect of Ta or RH on EWL/Δwvp (see text).
