Abstract
ABSTRACT. -Reflectances were measured of three wavelengths (826, 925, and 1035 mp) in the infrared spectrum by the integument of live Sceloporus occidentalis occidentalis from three different habitats in California. Populations sampled were (a) mid-Sierra Nevada mountains, elevation 3600 feet, Black Oak Ponderosa Pine; (b) coastal foothills, elevation 50 feet, open grass-brushland; (c) Central Valley, elevation 30 feet, cottonwood-brushgrasso Differential reflectances suggest differential utilization of radiant solar energy by the Sierran population as compared to utilization by the valley and coast populations. It is suggested that adaptations to various lengths of exposure to the sun's radiation may be responsible for the differences noted.
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