Show simple item record Vihermaa, Leena E. Waldron, Susan Domingues, Tomas Grace, John Cosio, Eric G. Limonchi, Fabian Hopkinson, Christopher da Rocha, Humberto R. Gloor, Emanuel 2021-10-21T19:23:46Z 2021-10-21T19:23:46Z 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. en_US
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 en_US

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