. The algae. Algae. SUBMERGENCE EMERGENCE SUBMERGENCE. Fig. 214 Top: effect of light intensity upon photosynthesis of exposed and submerged Hormosira banksii in relation to depth. a=low light intensity; b, optimum light intensity; c= supra- optimum light intensity. Bottom: effect of desiccation upon photosynthesis (full Hne) and respiration (broken Une) of Hor- mosira banksii when exposed. (After Trevarthen.) days. In regions where chop is considerable over much of the year, or where cloud is persistent, the lower Umit of algae will be higher then elsewhere. In the study by Stocker and Holdhei
. The algae. Algae. SUBMERGENCE EMERGENCE SUBMERGENCE. Fig. 214 Top: effect of light intensity upon photosynthesis of exposed and submerged Hormosira banksii in relation to depth. a=low light intensity; b, optimum light intensity; c= supra- optimum light intensity. Bottom: effect of desiccation upon photosynthesis (full Hne) and respiration (broken Une) of Hor- mosira banksii when exposed. (After Trevarthen.) days. In regions where chop is considerable over much of the year, or where cloud is persistent, the lower Umit of algae will be higher then elsewhere. In the study by Stocker and Holdheide, who used Fucus spiralis var. platycarpus and F. serratus, the difference between sunny and cloudy days was extremely pronounced (Fig. 213), and it would seem that on exposure the fall off in the assimilation rate on sunny days is correlated with the water content, because the exposed thaUi quickly dry up and cease to assimilate. An investigation into 397. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chapman, V. J. (Valentine Jackson), 1910-. London, Macmillan; New York, St. Martin's Press
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Keywords: ., bo, bookcentury1900, bookcollectionbiodiversity, booksubjectalgae
