Root-derived CO2 efflux via xylem stream rivals soil CO2 efflux

Doug P. Aubrey; Robert O. Teskey

doi:10.1111/j.1469-8137.2009.02971.x

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Root-derived CO₂ efflux via xylem stream rivals soil CO₂ efflux

Informally Refereed

Authors:

Doug P. Aubrey, Robert O. Teskey

Year:

2009

Type:

Scientific Journal

Station:

Southern Research Station

DOI:

https://doi.org/10.1111/j.1469-8137.2009.02971.x

Source:

New Phytologist: 1-6

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Abstract

Respiration consumes a large portion of annual gross primary productivity in forest ecosystems and is dominated by belowground metabolism. Here, we present evidence of a previously unaccounted for internal CO₂ flux of large magnitude from tree roots through stems. If this pattern is shown to persist over time and in other forests, it suggests that belowground respiration has been grossly underestimated.

Keywords

carbon allocation, carbon cycle, CO2 efflux, dissolved inorganic carbon, forests, respiration, roots, xylem transport

Citation

Aubrey, Doug P.; Teskey, Robert O. 2009. Root-derived CO₂ efflux via xylem stream rivals soil CO₂ efflux. New Phytologist: 1-6