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The effect of forest disturbance on volatile organic compounds in eastern white pine (Pinus strobus)
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The effect of forest disturbance on volatile organic compounds in eastern white pine (Pinus strobus)
Project Abstract:
In the coming decades, the forests of the Upper Great Lakes region are expected to experience disturbances that are primarily anthropogenic in origin and only affect certain species or a portion of the canopy. The Forest Accelerated Succession Experiment (FASET) mimics this type of disturbance in which only a fraction of the canopy is affected. In 2008, early successional aspen and birch trees in FASET were selectively girdled to accelerate the natural senescence and eventual replacement of these trees by later successional species such as eastern white pine (Pinus strobus) (Nave, et. al, 2011). It is uncertain how the disturbance will impact the allocation of carbon to biogenic volatile organic compounds (BVOCs) in later successional species, specifically Pinus strobus. Understanding how pine trees allocate carbon to volatile organic compounds is vital due to the role these compounds play in atmospheric chemistry. BVOCs are reactive carbon compounds that have a variety of fates once they are emitted into the atmosphere. Due to the implications of BVOC emissions on climate change and both public and ecosystem health, understanding how emissions will be affected by selective disturbance is crucial. We can expect disturbance to alter the BVOC pool in white pine trees due to the influence of environmental factors on BVOC emissions. BVOC emissions tend to be light and temperature dependent. BVOC emissions also tend to be linked to nitrogen availability, though the relationship varies depending on the type of compound (Lerdau, Guenther, and Monson, 1997). In this study we compared the BVOC pool of FASET pines to pines in an undisturbed control forest and to the BVOCs measured in 2008 in order to determine the effect of the disturbance on BVOC emissions.
Investigator(s):
Kathryn Bergh
Related data sets:
BVOC Composition of White Pine Needles in FASET and Ameriflux
Years Active:
2011
Methods:
N/A
Funding agency:
NSF-REU