Carbon in catchments: connecting terrestrial carbon losses with aquatic metabolism

  title={Carbon in catchments: connecting terrestrial carbon losses with aquatic metabolism},
  author={Jonathan J. Cole and Nina F. Caraco},
  journal={Marine and Freshwater Research},
  • J. Cole, N. Caraco
  • Published 12 January 2001
  • Environmental Science
  • Marine and Freshwater Research
For a majority of aquatic ecosystems, respiration ( R ) exceeds autochthonous gross primary production (GPP). These systems have negative net ecosystem production ((NEP) = (GPP) - R ) and ratios of (GPP)/ R of <1. This net heterotrophy can be sustained only if aquatic respiration is subsidized by organic inputs from the catchment. Such subsidies imply that organic materials that escaped decomposition in the terrestrial environment must become susceptible to decomposition in the linked aquatic… 

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