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Comparative physiology of a central hardwood old-growth forest canopy and forest gapAuthor(s): A. R. Gillespie; J. Waterman; K. Saylors
Source: In: Gillespie, Andrew R.; Parker, George R.; Pope, Phillip E.; Rink, George: eds. Proceedings of the 9th Central Hardwood Forest Conference; Gen. Tech. Rep. NC-161. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station: 46-54
Publication Series: General Technical Report (GTR)
Station: North Central Research Station
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DescriptionConcerns of poor oak regeneration, changing climate, biodiversity patterns, and carbon cycling in the Central Hardwoods have prompted ecological and physiological studies of old-growth forests and their role in maintaining the landscape. To examine the effects of old-growth canopy structure on the physiological productivity of overstory and understory species, we measured physiological parameters of canopy trees in an old-growth oak-maple forest in east-central Indiana. Mid-day measurements of photosynthesis, transpiration, stomatal conductance, photosynthetically-active radiation, humidity, vapor pressure deficit, air temperature, and ambient carbon dioxide levels were taken during the peak of the growing season along the profile of a canopy gap within the forest, and along a height transect within the continuous canopy. Productivity, physiological, and micro-environmental profiles are presented for this old-growth forest and their relationship to current and future tree species composition and forest structure is discussed.
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CitationGillespie, A. R.; Waterman, J.; Saylors, K. 1993. Comparative physiology of a central hardwood old-growth forest canopy and forest gap. In: Gillespie, Andrew R.; Parker, George R.; Pope, Phillip E.; Rink, George: eds. Proceedings of the 9th Central Hardwood Forest Conference; Gen. Tech. Rep. NC-161. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station: 46-54
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