Opposing Effects of Climate and Permafrost Thaw on CH4 and CO2 Emissions From Northern Lakes
dc.contributor.author | Kuhn, McKenzie A | |
dc.contributor.author | Thompson, Lauren M | |
dc.contributor.author | Winder, Johanna C | |
dc.contributor.author | Braga, Lucas PP | |
dc.contributor.author | Tanentzap, Andrew J | |
dc.contributor.author | Bastviken, David | |
dc.contributor.author | Olefeldt, David | |
dc.date.accessioned | 2021-11-12T18:57:06Z | |
dc.date.available | 2021-11-12T18:57:06Z | |
dc.date.issued | 2021 | |
dc.date.submitted | 2021-06-25 | |
dc.identifier.issn | 2576-604X | |
dc.identifier.other | aga220125 | |
dc.identifier.other | 2021av000515 | |
dc.identifier.uri | https://www.repository.cam.ac.uk/handle/1810/330614 | |
dc.description | Funder: Natural Sciences and Engineering Research Council | |
dc.description | Funder: Northern Scientific Training Program, University of Alberta | |
dc.description | Funder: UAlberta North, Vanier Canada Graduate ScholarshipW. Garfield Weston Foundation | |
dc.description.abstract | Abstract: Small, organic‐rich lakes are important sources of methane (CH4) and carbon dioxide (CO2) to the atmosphere, yet the sensitivity of emissions to climate warming is poorly constrained and potentially influenced by permafrost thaw. Here, we monitored emissions from 20 peatland lakes across a 1,600 km permafrost transect in boreal western Canada. Contrary to expectations, we observed a shift from source to sink of CO2 for lakes warmer regions, driven by greater primary productivity associated with greater hydrological connectivity to lakes and nutrient availability in the absence of permafrost. Conversely, an 8‐fold increase in CH4 emissions in warmer regions was associated with water temperature and shifts in microbial communities and dominant anaerobic processes. Our results suggest that the net radiative forcing from altered greenhouse gas emissions of northern peatland lakes this century will be dominated by increasing CH4 emissions and only partially offset by reduced CO2 emissions. | |
dc.language | en | |
dc.publisher | American Geophysical Union (AGU) | |
dc.subject | BIOGEOSCIENCES | |
dc.subject | Biogeochemical cycles, processes, and modeling | |
dc.subject | Carbon cycling | |
dc.subject | Limnology | |
dc.subject | Permafrost, cryosphere, and high‐latitude processes | |
dc.subject | Trace gases | |
dc.subject | Biogeochemical kinetics and reaction modeling | |
dc.subject | Natural hazards | |
dc.subject | CRYOSPHERE | |
dc.subject | Permafrost | |
dc.subject | Cryobiology | |
dc.subject | Biogeochemistry | |
dc.subject | GLOBAL CHANGE | |
dc.subject | HYDROLOGY | |
dc.subject | OCEANOGRAPHY: GENERAL | |
dc.subject | NATURAL HAZARDS | |
dc.subject | Other | |
dc.subject | OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL | |
dc.subject | PALEOCEANOGRAPHY | |
dc.subject | PLANETARY SCIENCES: COMETS AND SMALL BODIES | |
dc.subject | Comets: dust tails and trails | |
dc.subject | PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS | |
dc.subject | Asteroids | |
dc.subject | Comets | |
dc.subject | Research Article | |
dc.subject | greenhouse gas | |
dc.subject | aquatic | |
dc.subject | permafrost | |
dc.subject | lakes | |
dc.subject | climate warming | |
dc.title | Opposing Effects of Climate and Permafrost Thaw on CH4 and CO2 Emissions From Northern Lakes | |
dc.type | Article | |
dc.date.updated | 2021-11-12T18:57:06Z | |
prism.issueIdentifier | 4 | |
prism.publicationName | AGU ADVANCES | |
prism.volume | 2 | |
dc.identifier.doi | 10.17863/CAM.78058 | |
dcterms.dateAccepted | 2021-10-13 | |
rioxxterms.versionofrecord | 10.1029/2021AV000515 | |
rioxxterms.version | AO | |
rioxxterms.version | VoR | |
rioxxterms.licenseref.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.contributor.orcid | Tanentzap, Andrew [0000-0002-2883-1901] | |
dc.identifier.eissn | 2576-604X | |
pubs.funder-project-id | European Research Council (804673) | |
cam.issuedOnline | 2021-11-11 |
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