@article{fdi:010079357, title = {{C}arbon emission from thermokarst lakes in {NE} {E}uropean tundra}, author = {{Z}abelina, {S}. {A}. and {S}hirokova, {L}. {S}. and {K}limov, {S}. {I}. and {C}hupakov, {A}. {V}. and {L}im, {A}. {G}. and {P}olishchuk, {Y}. {M}. and {P}olishchuk, {V}. {Y}. and {B}ogdanov, {A}. {N}. and {M}uratov, {I}. {N}. and {G}u{\'e}rin, {F}r{\'e}d{\'e}ric and {K}arlsson, {J}. and {P}okrovsky, {O}. {S}.}, editor = {}, language = {{ENG}}, abstract = {{E}mission of greenhouse gases ({GHG}s) from inland waters is recognized as highly important and an understudied part of the terrestrial carbon ({C}) biogeochemical cycle. {T}hese emissions are still poorly quantified in subarctic regions that contain vast amounts of surface {C} in permafrost peatlands. {T}his is especially true in {NE} {E}uropean peatlands, located within sporadic to discontinuous permafrost zones which are highly vulnerable to thaw. {I}nitial measurements of {C} emissions from lentic waters of the {B}olshezemelskaya {T}undra ({BZT}; 200,000 km(2)) demonstrated sizable {CO}(2)and {CH}(4)concentrations and fluxes to the atmosphere in 98 depressions, thaw ponds, and thermokarst lakes ranging from 0.5 x 10(6)to 5 x 10(6) m(2)in size. {CO}(2)fluxes decreased by an order of magnitude as waterbody size increased by > 3 orders of magnitude while {CH}(4)fluxes showed large variability unrelated to lake size. {B}y using a combination of {L}andsat-8 and {G}eo{E}ye-1 images, we determined lakes cover 4% of {BZT} and thus calculated overall {C} emissions from lentic waters to be 3.8 +/- 0.65 {T}g {C} yr(-1)(99% {C}-{CO}2, 1% {C}-{CH}4), which is two times higher than the lateral riverine export. {L}arge lakes dominated {GHG} emissions whereas small thaw ponds had a minor contribution to overall water surface area and {GHG} emissions. {T}hese data suggest that, if permafrost thaw in {NE} {E}urope results in disappearance of large thermokarst lakes and formation of new small thaw ponds and depressions, {GHG} emissions from lentic waters in this region may decrease.}, keywords = {{RUSSIE} ; {EUROPE} {NORD} {EST} ; {BOLSHEZEMELSKAYA} ; {ZONE} {SUBARCTIQUE}}, booktitle = {}, journal = {{L}imnology and {O}ceanography}, volume = {66}, numero = {suppl. 1}, pages = {{S}216--{S}230}, ISSN = {0024-3590}, year = {2021}, DOI = {10.1002/lno.11560}, URL = {https://www.documentation.ird.fr/hor/fdi:010079357}, }