Title:	Relationships between stem CO2 efflux, substrate supply, and growth in young loblolly pine trees
Author(s):	Maier, Chris A.; Johnsen, Kurt H.; Clinton, Barton D.; Ludovici, Kim H.
Date:	2009
Source:	New Phytologist, Vol. 185: 502-513
Description:	We examined the relationships between stem CO2 efflux (Es), diameter growth, and nonstructural carbohydrate concentration in loblolly pine trees. Carbohydrate supply was altered via stem girdling during rapid stem growth in the spring and after growth had ceased in the autumn. We hypothesized that substrate type and availability control the seasonal variation and temperature sensitivity of Es.
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