Seasonal Changes in the Photosynthetic Capacity of Populus Tremuloides Bark
Changes in the photosynthetic capacity of two Populus tremuloides clones were measured using bark slices. The photosynthetic capacity of one clone (E S) declined during the winter and increased during spring and early summer. The spring increase was associated with a rise of chlorophyll content. A second clone (E P) retained a high photosynthetic capacity throughout the year. It was estimated that 5 to 10 percent of the total photosynthetic capacity of the tree resides in the bark. Considering only the stem, bark photosynthesis may reutilize 50 to 75 percent of the CO2 released through respiration of stem tissues. Forest Sci. 17:308-313.
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Document Type: Journal Article
Affiliations: Graduate Student, Dep. of Forest Botany and Pathology, State University of New York College of Forestry, Syracuse 13210
Publication date: 1971-09-01
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- Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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