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Organic Carbon Cycling

This document explores the fluxes and dynamics of dissolved organic carbon (DOC) and particulate organic carbon (POC) within ecosystems, focusing on the contributions of allochthonous and autochthonous sources. It discusses lateral movements of carbon in streams and reservoirs, particularly in Lawrence and Wintergreen Lakes, and the impact of climate change on DOC levels. Additionally, it examines the significance of humic substances and terrestrial sources in understanding aquatic carbon cycling.

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Organic Carbon Cycling

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Presentation Transcript

  1. Organic Carbon Cycling

  2. DOC and POC

  3. Organic C Sources

  4. Model of C movement in an ecosystem

  5. DOC and DIC lateral movements in a stream

  6. Allochthnous and Autochthnous C in Reservoirs and Streams

  7. DOC in Lawrence Lake

  8. Allochthnous and Autochthnous DOC in Lakes

  9. Recalcitrant and Labile DOC Sources

  10. POC in Lawrence Lake

  11. POC in Wintergreen Lake

  12. Allochthnous and Autochthnous Sources of POC in Lakes

  13. Humic Substances

  14. RDOM and terrestrial sources

  15. Changes in DOC relative to Climate Change

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