Figure : 14-2-carbon-in-the-aquatic-environment--still-a-draft

Carbon Flux Pathways in Aquatic Environments

Figure 14.1

University of Washington School of the Environment and Forest Sciences
David Butman

This figure appears in chapter 14 of the Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report report.

Allochthonous carbon represents organic and inorganic carbon, including dissolved carbon dioxide (CO2), that enters aquatic environments from terrestrial systems. Autochthonous carbon originates from primary and secondary production that uses either atmospheric CO2 or dissolved inorganic carbon from the aquatic environment. Primary production within autotrophic systems is responsible for the net uptake of atmospheric CO2, while respiration and allochthonous inputs of carbon within a heterotrophic system are responsible for a net CO2 emission to the atmosphere. Burial represents the deposition of autochthonous and allochthonous particulate carbon.

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This figure was created on April 23, 2018.

This figure was submitted on February 11, 2019.


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