The recent call to include inland waters (lakes, streams, rivers) in the global carbon (C) cycle (1) motivates a lot of my current research. Why? Because inland waters process at least half of the C they receive from terrestrial ecosystems (2; figure below) - C cycling models assume this C is stored in terrestrial ecosystems (even though it is respired, stored or transported by inland waters).
In other words, large-scale C models have ignored the role of inland waters. If freshwater ecosystems are included in these models, they are merely "pipes" or transport vectors, not C processors.
One of the major questions now is how to include freshwater C cycling in predictive landscape-scale C cycling models. My current research is focused on quantifying and modeling the drivers of C inputs, cycling and availability in freshwater ecosystems.
So...I suppose I should really be grateful for what has been ignored?
It certainly makes my own research more meaningful and exciting.
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READING: (1) Battin et al. (2009) The boundless carbon cycle. Nature Geoscience.
(2) Cole et al. (2007) Plumbing the Global Carbon Cycle: Integrating Inland Waters into the Terrestrial Carbon Budget. Ecosystems.
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