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Forests 2010, 1(1), 65-81; doi:10.3390/f1010065

Phenological and Temperature Controls on the Temporal Non-Structural Carbohydrate Dynamics of Populus grandidentata and Quercus rubra

1
Department of Biology, Virginia Commonwealth University, Box 842012, 1000 West Cary St., Richmond, VA 23284-2012, USA
2
Department of Evolution, Ecology, and Organismal Biology, Ohio State University, Columbus, OH 43210, USA
3
University of Michigan Biological Station, Pellston, MI 49769, USA
*
Author to whom correspondence should be addressed.
Received: 26 January 2010 / Revised: 7 March 2010 / Accepted: 16 March 2010 / Published: 23 March 2010
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Abstract

Temporal changes in plant tissue non-structural carbohydrates (NSC) may be sensitive to climate changes that alter forest phenology. We examined how temporal fluctuations in tissue NSC concentrations of Populus grandidentata and Quercus rubra relate to net and gross primary production (NPP, GPP) and their climatic drivers in a deciduous forest of Michigan, USA. Tissue NSC concentrations were coupled with NPP and GPP phenologies, declining from dormancy until GPP initiation and then increasing following NPP cessation. Warmer autumns extended the temporal gap between NPP and GPP cessation, prolonging the period of NSC accumulation. These results suggest that tissue NSC concentrations may increase with climate change.
Keywords: aspen; carbon; carbon cycle; non-structural carbohydrates; oak; photosynthesis; soluble sugars; starch aspen; carbon; carbon cycle; non-structural carbohydrates; oak; photosynthesis; soluble sugars; starch
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Gough, C.M.; Flower, C.E.; Vogel, C.S.; Curtis, P.S. Phenological and Temperature Controls on the Temporal Non-Structural Carbohydrate Dynamics of Populus grandidentata and Quercus rubra. Forests 2010, 1, 65-81.

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