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Terrestrial carbon in aquatic ecosystems: experimental tests of the subsidy-stability hypothesis

Terrestrial carbon in aquatic ecosystems: experimental tests of the subsidy-stability hypothesis. Stuart E. Jones & Jay T. Lennon. Decomposer. Producer. Inorganic Carbon. Organic Carbon. Inorganic Nutrients. Organic Nutrients. Subsidy. Producer-Decomposers Phytoplankton-Bacterioplankton.

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Terrestrial carbon in aquatic ecosystems: experimental tests of the subsidy-stability hypothesis

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  1. Terrestrial carbon in aquatic ecosystems: experimental testsof the subsidy-stability hypothesis Stuart E. Jones & Jay T. Lennon

  2. Decomposer Producer Inorganic Carbon Organic Carbon Inorganic Nutrients Organic Nutrients Subsidy Producer-DecomposersPhytoplankton-Bacterioplankton

  3. Allochthony Water color ~ DOC Terrestrial DOC is an increasing subsidy to aquatic ecosystems Hudson River, Northeast USA Findlay 2005 Frontiers in Ecology and the Environment Carpenter et al. 2005; Jansson et al. 2007

  4. Does terrestrial DOC influence aquatic metabolic stability?

  5. Carbon Loading

  6. Water Color (m-1) DOC (mg L-1) Result of Manipulation

  7. High DOC Low DOC DOC isn’t just a subsidy…

  8. Next steps… • Metabolism data • Microbial loop coupling • ???

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