The impact of microbial carbonic anhydrase activity on atmospheric concentrations of CO18O and COS at large scales
| hal.structure.identifier | Ecologie et Ecophysiologie Forestières [devient SILVA en 2018] [EEF] | |
| dc.contributor.author | CUNTZ, Matthias | |
| hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
| dc.contributor.author | WINGATE, Lisa | |
| dc.date.accessioned | 2024-04-08T11:57:17Z | |
| dc.date.available | 2024-04-08T11:57:17Z | |
| dc.date.issued | 2017 | |
| dc.date.conference | 2017-08-21 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/195826 | |
| dc.description.abstractEn | Photosynthesis (GPP), the largest CO 2 flux from the land surface, i s currently estimated with considerable uncertainty between 100-175 Pg C yr -1 . More robust estimates of global GPP could be obtained from the atmospheric b udgets of other tracers such as, the oxygen isotopic composition (δ 18 O) of atmospheric CO 2 or carbonyl sulphide (COS). However, estimating GPP using thes e tracers hinges on a better understanding of how soil microbes modify th e atmospheric concentrations of CO 18 O and COS at large scales. In par ticular, understanding better the role and activity of the enzyme Carbonic Anhydrase (CA) in soil microbes is a critical factor u nderpinning the successful implementation of these tracers in global scale models. We addr essed this knowledge gap by measuring the exchange of CO 18 O and COS between soil microcosms and the atmosphere from over 60 sites covering a range of biome s across Europe and the USA. This novel dataset has led to the development of a new mechanistic framework that can be easily i mplemented in mult i-tracer Earth system models to predict variati ons in soil CA a ctivity across the terrestrial land surface. Using this multi-tracer approach we provi de independent estimates of globa l GPP constrained by the atmospheric budgets of CO 2 , CO 18 O and COS. | |
| dc.language.iso | en | |
| dc.title.en | The impact of microbial carbonic anhydrase activity on atmospheric concentrations of CO18O and COS at large scales | |
| dc.type | Communication dans un congrès | |
| dc.subject.hal | Sciences du Vivant [q-bio] | |
| dc.subject.hal | Sciences de l'environnement | |
| bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
| bordeaux.institution | Bordeaux Sciences Agro | |
| bordeaux.institution | INRAE | |
| bordeaux.conference.title | 10. International Carbon Dioxide Conference | |
| bordeaux.country | CH | |
| bordeaux.conference.city | Interlaken | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02787886 | |
| hal.version | 1 | |
| hal.invited | non | |
| hal.proceedings | non | |
| hal.conference.end | 2017-08-25 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02787886v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2017&rft.au=CUNTZ,%20Matthias&WINGATE,%20Lisa&rft.genre=unknown |
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