Fluvial carbon export from a lowland Amazonian rainforest in relation to atmospheric fluxes

Simple item page
dc.contributor.authorVihermaa, Leena E.
dc.contributor.authorWaldron, Susan
dc.contributor.authorDomingues, Tomas
dc.contributor.authorGrace, John
dc.contributor.authorCosio, Eric G.
dc.contributor.authorLimonchi, Fabian
dc.contributor.authorHopkinson, Christopher
dc.contributor.authorda Rocha, Humberto R.
dc.contributor.authorGloor, Emanuel
dc.date.accessioned2021-10-21T19:23:46Z
dc.date.available2021-10-21T19:23:46Z
dc.date.issued2016
dc.descriptionOpen access article. Creative Commons Attribution 4.0 International License (CC BY 4.0) appliesen_US
dc.description.abstractWe 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.description.peer-reviewYesen_US
dc.identifier.citationVihermaa, 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/10.1002/2016JG003464en_US
dc.identifier.urihttps://hdl.handle.net/10133/6078
dc.language.isoen_USen_US
dc.publisherAGU Publicationsen_US
dc.publisher.departmentDepartment of Geography and Environmenten_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionUniversity of Glasgowen_US
dc.publisher.institutionUniversidade de Sao Pauloen_US
dc.publisher.institutionUniversity of Edinburghen_US
dc.publisher.institutionPontificia Universidad Católica de Perúen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.institutionUniversity of Leedsen_US
dc.publisher.urlhttps://doi.org/10.1002/2016JG003464en_US
dc.subjectEddy covariance
dc.subjectCO2 efflux
dc.subjectDIC
dc.subjectDOC
dc.subjectPOC
dc.subjectFluvial C export
dc.subjectDissolved inorganic carbon
dc.subjectDissolved organic carbon
dc.subjectParticulate organic carbon
dc.subjectWestern Amazon Basin
dc.titleFluvial carbon export from a lowland Amazonian rainforest in relation to atmospheric fluxesen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Hopkinson-fluvial-carbon-export.pdf
Size:
900.76 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Hopkinson, Christopher