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Citation. Reich, P.B.; Hungate, B.; Luo, Y. 2006. Carbon-Nitrogen Interactions in Terrestrial Ecosystems in Response to Rising Atmospheric CO2. Annual Review of Ecologyk Evolution, and Systematics 37:611-636.
Abstract. Interactions involving carbon (C) and nitrogen (N) likely modulate
terrestrial ecosystem responses to elevated atmospheric carbon
dioxide (CO2) levels at scales from the leaf to the globe and from
the second to the century. In particular, response to elevated CO2
may generally be smaller at low relative to high soil N supply and,
in turn, elevated CO2 may influence soil N processes that regulate
N availability to plants. Such responses could constrain the capacity
of terrestrial ecosystems to acquire and store C under rising elevated CO2 levels. This review highlights the theory and empirical evidence behind these potential interactions.We address effects on photosynthesis, primary production, biogeochemistry, trophic interactions, and interactions with other resources and environmental factors, focusing as much as possible on evidence from long-term field experiments.
Key words: biogeochemistry, global change, nitrogen, photosynthesis, stoichiometry