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dc.contributor.author Vihermaa, Leena E.
dc.contributor.author Waldron, Susan
dc.contributor.author Domingues, Tomas
dc.contributor.author Grace, John
dc.contributor.author Cosio, Eric G.
dc.contributor.author Limonchi, Fabian
dc.contributor.author Hopkinson, Christopher
dc.contributor.author da Rocha, Humberto R.
dc.contributor.author Gloor, Emanuel
dc.date.accessioned 2021-10-21T19:23:46Z
dc.date.available 2021-10-21T19:23:46Z
dc.date.issued 2016
dc.identifier.citation Vihermaa, L. E., Waldron, S., Domingues, T., Grace, J., Cosio, E. G., Limonchi, F., Hopkinson, C., da Rocha, H. R., & Gloor, E. (2016). Fluvial carbon export from a lowland Amazonian rainforest in relation to atmospheric fluxes. Journal of Geophysical Research: Biogeosciences, 121(12), 3001-3018. https://doi.org/10.1002/2016JG003464 en_US
dc.identifier.uri https://hdl.handle.net/10133/6078
dc.description Open access article. Creative Commons Attribution 4.0 International License (CC BY 4.0) applies en_US
dc.description.abstract We constructed a whole carbon budget for a catchment in the Western Amazon Basin, combining drainage water analyses with eddy covariance (EC) measured terrestrial CO2 fluxes. As fluvial C export can represent permanent C export it must be included in assessments of whole site C balance, but it is rarely done. The footprint area of the flux tower is drained by two small streams (~5–7 km2 ) from which we measured the dissolved inorganic carbon (DIC), dissolved organic carbon (DOC), particulate organic carbon (POC) export, and CO2 efflux. The EC measurements showed the site C balance to be +0.7 9.7 Mg C ha 1 yr 1 (a source to the atmosphere) and fluvial export was 0.3 0.04 Mg C ha 1 yr 1 . Of the total fluvial loss 34% was DIC, 37% DOC, and 29% POC. The wet season was most important for fluvial C export. There was a large uncertainty associated with the EC results and with previous biomass plot studies ( 0.5 4.1 Mg C ha 1 yr 1 ); hence, it cannot be concluded with certainty whether the site is C sink or source. The fluvial export corresponds to only 3–7% of the uncertainty related to the site C balance; thus, other factors need to be considered to reduce the uncertainty and refine the estimated C balance. However, stream C export is significant, especially for almost neutral sites where fluvial loss may determine the direction of the site C balance. The fate of C downstream then dictates the overall climate impact of fluvial export. en_US
dc.language.iso en_US en_US
dc.publisher AGU Publications en_US
dc.subject Eddy covariance
dc.subject CO2 efflux
dc.subject DIC
dc.subject DOC
dc.subject POC
dc.subject Fluvial C export
dc.subject Dissolved inorganic carbon
dc.subject Dissolved organic carbon
dc.subject Particulate organic carbon
dc.subject Western Amazon Basin
dc.title Fluvial carbon export from a lowland Amazonian rainforest in relation to atmospheric fluxes en_US
dc.type Article en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Geography and Environment en_US
dc.description.peer-review Yes en_US
dc.publisher.institution University of Glasgow en_US
dc.publisher.institution Universidade de Sao Paulo en_US
dc.publisher.institution University of Edinburgh en_US
dc.publisher.institution Pontificia Universidad Católica de Perú en_US
dc.publisher.institution University of Lethbridge en_US
dc.publisher.institution University of Leeds en_US
dc.publisher.url https://doi.org/10.1002/2016JG003464 en_US


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