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Winter Season Corticular Photosynthesis in Cornus florida, Acer rubrum, Quercus alba, and Liriodendron tulipifera

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Winter season corticular photosynthesis was studied in four species of deciduous trees: dogwood (Cornus florida), red maple (Acer rubrum), white oak (Quercus alba), and yellow-poplar (Liriodendron tulipifera). Techniques included measuring CO2 uptake at varying light intensities, relating the apparent photosynthetic capacities to seasonal changes in chlorophyll content of twigs and determining the fate of assimilated carbon over time. Dogwood was the most photosynthetically active of the four species studied; however, gross photosynthesis did not exceed respiration in any of the four species. Photosynthetic activity of dogwood twigs was estimated at 10 percent of that of dogwood leaves on a weight basis and 85 percent on a surface area basis. Photosynthetic activity was generally related to shade tolerance ranking and was on the order of dogwood » red maple » white oak ≍ yellow-poplar. Little change in chlorophyll content occurred over the January-April 1979 study interval. Forest Sci. 26:561-566.

Keywords: Corticular photosynthesis; allocation; light response; tolerance

Document Type: Journal Article

Affiliations: Scientist with the Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830

Publication date: December 1, 1980

More about this publication?
  • 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.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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