@article{fdi:010074420,
  title = {{CO}2 evasion along streams driven by groundwater inputs and geomorphic controls},
  author = {{D}uvert, {C}. and {B}utman, {D}. {E}. and {M}arx, {A}. and {R}ibolzi, {O}livier and {H}utley, {L}. {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{H}eadwaters are hotspots of carbon dioxide ({CO}2) evasion from rivers. {W}hile emerging evidence suggests that groundwater contributes disproportionately to {CO}2 in headwater streams, the processes of {CO}2 delivery to streams and subsequent evasion to the atmosphere remain largely unknown. {H}ere we show the variability of {CO}2 input and evasion fluxes based on coupled measurements of dissolved {CO}2 along streams and in adjacent groundwater from two headwater catchments of the tropical and temperate zones. {W}e find that the processes can be highly localized in both space and time. {S}patially, they are significantly influenced by heterogeneities in the subsurface and stream landscape; temporally, they predominately occur during the transient activation of connected subsurface water flows. {W}e highlight sharp increases and decreases in the stream {CO}2 flux, and suggest that current models fail to capture the true magnitude of {CO}2 evasion. {T}he high spatial and temporal variability of {CO}2 input from groundwater and evasion to the atmosphere makes accurate assessment of {CO}2 evasion fluxes difficult, and will require a collaborative effort by catchment hydrologists and aquatic ecologists to fully understand the contribution of groundwater to stream {CO}2 emissions.},
  keywords = {},
  booktitle = {},
  journal = {{N}ature {G}eoscience},
  volume = {11},
  numero = {11},
  pages = {813--818},
  ISSN = {1752-0894},
  year = {2018},
  DOI = {10.1038/s41561-018-0245-y},
  URL = {https://www.documentation.ird.fr/hor/fdi:010074420},
}