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 |