{"id":168,"date":"2017-11-18T22:20:14","date_gmt":"2017-11-19T03:20:14","guid":{"rendered":"https:\/\/carleton.ca\/cubiomet\/?page_id=168"},"modified":"2019-03-04T13:59:28","modified_gmt":"2019-03-04T18:59:28","slug":"mer-bleue","status":"publish","type":"page","link":"https:\/\/carleton.ca\/cubiomet\/research\/mer-bleue\/","title":{"rendered":"Mer Bleue"},"content":{"rendered":"

Carbon and energy fluxes at the Mer Bleue bog<\/h2>\n

Peatlands are wetlands that have accumulated at least 30-40 cm of partially decomposed organic \"\"material. Carbon accumulates due to a small imbalance between plant production and decomposition. Although northern peatlands occupy only 3% of the land surface, the C stored within this peat makes up about one-third of the total global soil C pool.<\/p>\n

We are making continuous measurements of CO2<\/span>, energy and water fluxes at Mer Bleue<\/a>, a low shrub ombrotrophic bog just outside Ottawa, Ontario.\u00a0 This long-term dataset is being used to shed light on the response of peatland C cycling to variations in weather and to help us understand how the C sink strength may change with climate warming.\u00a0 Measurements began in 1998 originally as part of the Peatland Carbon Study (PCARS)<\/a>.\u00a0 The measurements were continued as part of the Fluxnet Canada Research Network and the Canadian Carbon Project.\u00a0 Past data is available here<\/a>.<\/p>\n

Selected Publications:<\/span><\/h2>\n
    \n
  1. Granath G, Rydin H, Baltzer JL, Bengtsson F, Boncek N, Bragazza L, Bu Z-J, Caporn SJM, Dorrepaal E, Galanina O, Ga\u0142ka M, Ganeva A, Gillikin DP, Goia I, Goncharova N, H\u00e1jek M, Haraguchi A, Harris LI<\/u>, Humphreys E, Jirou\u0161ek M, Kajuka\u0142o K, Karofeld E, Koronatova NG, Kosykh NP, Lamentowicz M, Lapshina E, Limpens J, Linkosalmi M, Ma J-Z, Mauritz M, Munir TM, Natali SM, Natcheva R, Noskova M, Payne RJ, Pilkington K, Robinson S, Robroek BJM, Rochefort L, Singer D, Sten\u00f8ien HK, Tuittila E-S, Vellak K, Verheyden A, Waddington JM, Rice SK. 2018. Environmental and taxonomic controls of carbon and oxygen stable isotope composition in\u00a0Sphagnum<\/em>\u00a0across broad climatic and geographic ranges. Biogeosciences<\/em>, 15, 5189-5202, doi.org\/10.5194\/bg-15-5189-2018.<\/li>\n
  2. Gianluca F, Cremonese E, Migliavacca M, Galvagno M, Sonnentag O, Humphreys E, Hufkense K, Ryu Y, Verfaillie J, Morra di Cella U, Richardson AD. 2018. NDVI derived from near-infrared-enabled digital cameras: applicability across different plant functional types. Agricultural and Forest Meteorology<\/em>, 249: 275-285.<\/li>\n
  3. Juutinen S, Moore T, Bubier J, Arnkill S, Humphreys E, Marincak B<\/u>, Roy C, Larmola T. 2018. Long-term nutrient addition increased CH4<\/sub>\u00a0emission from a bog through direct and indirect effects. Nature Scientific Reports<\/em>, 8, 3838, doi:10.1038\/s41598-018-22210-2<\/li>\n
  4. Kalacska M, Arroyo-Mora J, Soffer RJ, Roulet NT, Moore TR, Humphreys E, Leblanc G, Lucanus O, Inamdar D. 2018.\u00a0 Estimating peatland water table depth and net ecosystem exchange: a comparison between satellite and airborne imagery.\u00a0 Remote Sensing<\/em>, 10, 687; doi:10.3390\/rs10050687<\/li>\n
  5. Qiu C et al. 2018. ORCHIDEE-PEAT (revision 4596), a model for northern peatland CO\u2082, water and energy fluxes on daily to annual scales. 2018. Geoscientific Model Development<\/em>, 11, 497-519.<\/li>\n
  6. Petrescu, A.M.R., Lohila, A., Tuovinen, J.-P. et al. 2015. The uncertain climate footprint of wetlands under human pressure, PNAS.<\/em>\u00a0 doi\/10.1073\/pnas.1416267112<\/li>\n
  7. Brown, M<\/u>. G., E. R. Humphreys, T. R. Moore, N. T. Roulet, and P. M. Lafleur.\u00a0 2014. Evidence for a nonmonotonic relationship between ecosystem-scale peatland methane emissions and water table depth, J. Geophys. Res. Biogeosci.,<\/em> 119, doi:10.1002\/2013JG002576.<\/li>\n
  8. Humphreys, E.R., Brown, M.,<\/u> Charron, C., and Jones, R.\u00a0 2014.\u00a0 Contrasting the CO2<\/sub> fluxes of a temperate ombrotrophic bog with fluxes from two bogs in the Canadian Hudson Bay Lowland.\u00a0 Arctic Antarctic Alpine Res. <\/em>\u00a046(1):103-113.<\/li>\n
  9. Kross, A. S. E., N. T. Roulet, T. R. Moore, P. M. Lafleur, E. R. Humphreys, J. W. Seaquist, L. B. Flanagan, and M. Aurela. 2014. Phenology and its role in carbon dioxide exchange processes in northern peatlands, J. Geophys. Res. Biogeosci., 119, 1370\u20131384, doi:10.1002\/ 2014JG002666.<\/li>\n
  10. Kopp,\u00a0B.\u00a0J., Fleckenstein,\u00a0J.\u00a0H., Roulet,\u00a0N.\u00a0T., Humphreys,\u00a0E., Talbot,\u00a0J., and Blodau,\u00a0C. 2013. Impact of long-term drainage on summer groundwater flow patterns in the Mer Bleue peatland, Ontario, Canada, Hydrol. Earth Syst. Sci<\/em>., 17, 3485-3498, doi:10.5194\/hess-17-3485-2013.<\/li>\n
  11. Larmola, T., Bubier, J.L., Kobyljanec, C., Basiliko, N., Juutinen, S., Humphreys, E., Preston, M., and Moore, T.R. 2013.\u00a0 Vegetation feedbacks of nutrient addition lead to a weaker carbon sink in an ombrotrophic bog.\u00a0 Global Change Biology<\/em>, 19, 3729\u20133739, doi: 10.1111\/gcb.12328<\/li>\n
  12. Br\u00fcmmer, C., Black, T.A., Jassal, R.S., Grant, N.J., Spittlehouse, D.L., Chen, B., Nesic, Z., Amiro, B.D., Arain, M.A., Barr, A.G., Bourque, C.P.-A., Coursolle, C., Dunn, A.L., Flanagan, L.B., Humphreys, E.R., Lafleur, P.M., Margolis, H.A., McCaughey, J.H., and Wofsy, S.C. \u00a02012. How climate and vegetation type influence evapotranspiration and water use efficiency in Canadian forest, peatland and grassland ecosystems, Agricultural and Forest Meteorology<\/em>, 153: 14-30.<\/li>\n
  13. Chong, M.<\/u>, Humphreys, E.R., and Moore, T.R. 2012.\u00a0 Microclimatic response to increasing shrub cover and its effect on Sphagnum<\/em> CO2<\/sub> exchange in a bog.\u00a0 Ecoscience<\/em>, 19: 89-97.<\/li>\n
  14. Knox, S.H.<\/u>, Carey, S.K., and Humphreys, E.R. 2012.\u00a0 Snow surface energy exchanges and snowmelt in a shrub-covered bog in eastern Ontario, Canada. Hydrological Processes<\/em>, doi:\u00a010.1002\/hyp.9289<\/li>\n
  15. Lai, D.Y.F., Roulet, N.T., Humphreys, E.R., Moore, T.R., and Dalva, M.\u00a0 2012.\u00a0 The effect of atmospheric turbulence and chamber deployment period on autochamber CO2<\/sub> and CH4<\/sub> flux measurements in an ombrotrophic peatland.\u00a0 Biogeosciences<\/em>, 9: 3305-3322.<\/li>\n
  16. Schaefer, K and 50 others.\u00a0 2012.\u00a0 A model-data comparison of gross primary productivity:\u00a0 Results from the North American Carbon Program site synthesis.\u00a0 Journal of Geophysical Research<\/em>, 117, doi: 10.1029\/2012JG001960.<\/li>\n
  17. Wu, J., N. T. Roulet, M. Nilsson, P. Lafleur, and Humphreys, E. 2012. Simulating the Carbon Cycling of Northern Peatlands Using a Land Surface Scheme Coupled to a Wetland Carbon Model (CLASS3W-MWM), Atmosphere-Ocean<\/em>, 50: 487-506.<\/li>\n<\/ol>\n

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    Carbon and energy fluxes at the Mer Bleue bog Peatlands are wetlands that have accumulated at least 30-40 cm of partially decomposed organic material. Carbon accumulates due to a small imbalance between plant production and decomposition. 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