G. Abbott, E. Swain, A. Muhammad, K. Allton, L. Belyea et al., Effect of water-table fluctuations on the degradation of Sphagnum phenols in surficial peats, Geochimica et Cosmochimica Acta, vol.106
DOI : 10.1016/j.gca.2012.12.013

J. Akagi and A. Zsolnay, Effects of long-term de-vegetation on the quantity and quality of water extractable organic matter (WEOM): Biogeochemical implications, Chemosphere, vol.72, issue.10, pp.1462-1466, 2008.
DOI : 10.1016/j.chemosphere.2008.05.009

R. Andersen, L. Grasset, L. Rochefort, M. Thormann, and A. Francez, Changes in microbial community structure and function following Sphagnum peatland restoration, Soil Biology and Biochemistry, vol.42, issue.2, pp.291-301, 2010.
DOI : 10.1016/j.soilbio.2009.11.006

URL : https://hal.archives-ouvertes.fr/hal-00448323

E. Aronson and S. Mcnulty, Appropriate experimental ecosystem warming methods by ecosystem, objective, and practicality, Agricultural and Forest Meteorology, vol.149, issue.11, pp.1791-1799, 2009.
DOI : 10.1016/j.agrformet.2009.06.007

R. Bardgett, P. Hobbs, and Å. Frostegård, Changes in soil fungal:bacterial biomass ratios following reductions in the intensity of management of an upland grassland, Biology and Fertility of Soils, vol.5, issue.3, pp.261-264, 1996.
DOI : 10.1007/BF00382522

N. Beales, Adaptation of Microorganisms to Cold Temperatures, Weak Acid Preservatives, Low pH, and Osmotic Stress: A Review, Comprehensive Reviews in Food Science and Food Safety, vol.1, issue.2, pp.1-20, 2004.
DOI : 10.1016/0168-1605(91)90063-U

E. Bligh and W. Dyer, A RAPID METHOD OF TOTAL LIPID EXTRACTION AND PURIFICATION, Canadian Journal of Biochemistry and Physiology, vol.37, issue.8, pp.911-917, 1959.
DOI : 10.1139/o59-099

S. Bokhorst, A. Huiskes, R. Aerts, P. Convey, E. Cooper et al., Variable temperature effects of Open Top Chambers at polar and alpine sites explained by irradiance and snow depth, Global Change Biology, vol.6, issue.1, pp.64-74, 2013.
DOI : 10.1111/gcb.12028

URL : https://hal.archives-ouvertes.fr/hal-00780688

L. Bragazza, J. Parisod, A. Buttler, and R. Bardgett, Biogeochemical plant???soil microbe feedback in response to climate warming in peatlands, Nature Climate Change, vol.361, issue.3, pp.273-277, 2013.
DOI : 10.1038/nclimate1781

A. Breeuwer, M. Heijmans, M. Gleichman, B. Robroek, and F. Berendse, Response of Sphagnum species mixtures to increased temperature and nitrogen availability, Plant Ecology, vol.88, issue.1, pp.97-111, 2009.
DOI : 10.1007/s11258-009-9571-x

T. Carleton and K. Dunham, Distillation in a boreal mossy forest floor, Canadian Journal of Forest Research, vol.33, issue.4, pp.663-671, 2003.
DOI : 10.1139/x02-197

D. Charman, D. Beilman, M. Blaauw, R. Booth, S. Brewer et al., Climate-related changes in peatland carbon accumulation during the last millennium, Biogeosciences, vol.10, issue.2, pp.929-944, 2013.
DOI : 10.5194/bg-10-929-2013

URL : https://hal.archives-ouvertes.fr/hal-00980653

A. Dabros and J. Fyles, Effects of open-top chambers and substrate type on biogeochemical processes at disturbed boreal forest sites in northwestern Quebec, Plant and Soil, vol.20, issue.1-2, pp.465-479, 2010.
DOI : 10.1007/s11104-009-0077-z

E. Davidson and I. Janssens, Temperature sensitivity of soil carbon decomposition and feedbacks to climate change, Nature, vol.63, issue.7081, pp.165-173, 2006.
DOI : 10.1038/nature04514

D. Boeck, H. , D. Groote, T. Nijs, and I. , Leaf temperatures in glasshouses and open-top chambers, New Phytologist, vol.345, issue.4
DOI : 10.1111/j.1469-8137.2012.04117.x

F. Delarue, F. Laggoun-defarge, A. Buttler, S. Gogo, V. Jassey et al., Effects of short-term ecosystem experimental warming on water-extractable organic matter in an ombrotrophic Sphagnum peatland (Le Forbonnet, France), Organic Geochemistry, vol.42, issue.9, pp.1016-1024, 2011.
DOI : 10.1016/j.orggeochem.2011.07.005

URL : https://hal.archives-ouvertes.fr/insu-00615432

F. Delarue, F. Laggoun-defarge, J. Disnar, N. Lottier, and S. Gogo, Organic matter sources and decay assessment in a Sphagnum-dominated peatland (Le Forbonnet, Jura Mountains, France): impact of moisture conditions, Biogeochemistry, vol.57, issue.11, pp.39-52, 2011.
DOI : 10.1007/s10533-010-9410-0

URL : https://hal.archives-ouvertes.fr/insu-00457818

M. Dubois, K. Gilles, J. Hamilton, P. Rebers, and F. Smith, Colorimetric Method for Determination of Sugars and Related Substances, Analytical Chemistry, vol.28, issue.3, pp.350-356, 1956.
DOI : 10.1021/ac60111a017

N. Fenner and C. Freeman, Drought-induced carbon loss in peatlands, Nature Geoscience, vol.27, issue.12, pp.895-900, 2011.
DOI : 10.1029/2008JG000853

C. Freeman, G. Liska, N. Ostle, S. Jones, and M. Lock, The use of fluorogenic substrates for measuring enzyme activity in peatlands, Plant and Soil, vol.34, issue.1, pp.147-152, 1995.
DOI : 10.1007/BF02413020

C. Freeman, N. Ostle, and H. Kang, An enzymic 'latch' on a global carbon store -A shortage of oxygen locks up carbon in peatlands by restraining a single enzyme, Nature, vol.409, issue.6817, pp.149-149, 2001.
DOI : 10.1038/35051650

C. Freeman, N. Ostle, N. Fenner, and H. Kang, A regulatory role for phenol oxidase during decomposition in peatlands, Soil Biology and Biochemistry, vol.36, issue.10, pp.1663-1667, 2004.
DOI : 10.1016/j.soilbio.2004.07.012

P. Friedlingstein, P. Cox, R. Betts, L. Bopp, V. Bloh et al., MIP Model Intercomparison, Journal of Climate, vol.19, issue.14, pp.3337-3353, 2006.
DOI : 10.1175/JCLI3800.1

Å. Frostegård and E. Bååth, The use of phospholipid fatty acid analysis to estimate bacterial and fungal biomass in soil, Biology and Fertility of Soils, vol.28, issue.1-2, pp.59-65, 1996.
DOI : 10.1007/BF00384433

E. Gorham, Northern Peatlands: Role in the Carbon Cycle and Probable Responses to Climatic Warming, Ecological Applications, vol.1, issue.2, pp.182-195, 1991.
DOI : 10.2307/1941811

K. Hansson, D. Kleja, K. Kalbitz, and H. Larsson, Amounts of carbon mineralised and leached as DOC during decomposition of Norway spruce needles and fine roots, Soil Biology and Biochemistry, vol.42, issue.2, pp.178-185, 2010.
DOI : 10.1016/j.soilbio.2009.10.013

R. Hollister, P. Webber, F. Nelson, and C. Tweedie, Soil Thaw and Temperature Response to Air Warming Varies by Plant Community: Results from an Open-top Chamber Experiment in Northern Alaska, Arctic, Antarctic, and Alpine Research, vol.38, issue.2, pp.206-215, 2006.
DOI : 10.1657/1523-0430(2006)38[206:STATRT]2.0.CO;2

V. Jassey, G. Chiapusio, P. Binet, A. Buttler, F. Laggoun-defarge et al., peatland: climate warming affects plant-microbial interactions, Global Change Biology, vol.20, issue.3, pp.811-823, 2013.
DOI : 10.1111/gcb.12075

URL : https://hal.archives-ouvertes.fr/insu-00766326

V. Jassey, G. Chiapusio, D. Gilbert, A. Buttler, M. Toussaint et al., Experimental climate effect on seasonal variability of polyphenol/phenoloxidase interplay along a narrow fen-bog ecological gradient in Sphagnum fallax, Global Change Biology, vol.20, issue.9, pp.2945-2957, 2011.
DOI : 10.1111/j.1365-2486.2011.02437.x

URL : https://hal.archives-ouvertes.fr/hal-00682513

K. Kalbitz, D. Schwesig, J. Schmerwitz, K. Kaiser, L. Haumaier et al., Changes in properties of soil-derived dissolved organic matter induced by biodegradation, Soil Biology and Biochemistry, vol.35, issue.8, pp.1129-1142, 2003.
DOI : 10.1016/S0038-0717(03)00165-2

R. Kroppenstedt, Fatty acid and Menaquinone analysis of actinomycetes and related organisms, Chemical Methods in Bacterial Systematics, pp.173-199, 1985.

J. Loisel and Z. Yu, Recent acceleration of carbon accumulation in a boreal peatland, south central Alaska, Journal of Geophysical Research: Biogeosciences, vol.28, issue.D17, pp.41-53, 2013.
DOI : 10.1029/2010GL043584

G. Marion, G. Henry, D. Freckman, J. Johnstone, G. Jones et al., Open-top designs for manipulating field temperature in high-latitude ecosystems, Global Change Biology, vol.3, issue.S1, pp.20-32, 1997.
DOI : 10.1111/j.1365-2486.1997.gcb136.x

G. Mclatchey and K. Reddy, Regulation of Organic Matter Decomposition and Nutrient Release in a Wetland Soil, Journal of Environment Quality, vol.27, issue.5, pp.1268-1274, 1998.
DOI : 10.2134/jeq1998.00472425002700050036x

P. Mcneil and J. Waddington, Moisture controls on Sphagnum growth and CO2 exchange on a cutover bog, Journal of Applied Ecology, vol.62, issue.2, pp.354-367, 2003.
DOI : 10.1046/j.1365-2664.2003.00790.x

A. Otto, F. Otto, O. Boucher, J. Church, G. Hegerl et al., Energy budget constraints on climate response, Nature Geoscience, vol.32, issue.6, pp.415-416, 2013.
DOI : 10.1038/ngeo1836

URL : https://hal.archives-ouvertes.fr/hal-01109024

A. Pind, C. Freeman, and M. Lock, Enzymic degradation of phenolic materials in peatlands ??? measurement of phenol oxidase activity, Plant and Soil, vol.229, issue.2, pp.227-231, 1994.
DOI : 10.1007/BF00009285

J. Price, T. Edwards, Y. Yi, and P. Whittington, Physical and isotopic characterization of evaporation from Sphagnum moss, Journal of Hydrology, vol.369, issue.1-2, pp.175-182, 2009.
DOI : 10.1016/j.jhydrol.2009.02.044

D. Ringelberg, J. Stair, J. Almeida, R. Norby, O. Neil et al., Consequences of Rising Atmospheric Carbon Dioxide Levels for the Belowground Microbiota Associated with White Oak, Journal of Environment Quality, vol.26, issue.2, pp.495-503, 1997.
DOI : 10.2134/jeq1997.00472425002600020022x

B. Robroek, A. Heijboer, V. Jassey, M. Hefting, G. Rouwenhorst et al., Snow cover manipulation effects on microbial community structure and soil chemistry in a mountain bog, Plant and Soil, vol.3, issue.1???2, pp.151-164, 2013.
DOI : 10.1007/s11104-012-1547-2

K. Saiya-cork, R. Sinsabaugh, and D. Zak, The effects of long term nitrogen deposition on extracellular enzyme activity in an Acer saccharum forest soil, Soil Biology and Biochemistry, vol.34, issue.9, pp.1309-1315, 2002.
DOI : 10.1016/S0038-0717(02)00074-3

J. Schimel and M. Weintraub, The implications of exoenzyme activity on microbial carbon and nitrogen limitation in soil: a theoretical model, Soil Biology and Biochemistry, vol.35, issue.4, pp.549-563, 2003.
DOI : 10.1016/S0038-0717(03)00015-4

P. Sullivan, S. Arens, R. Chimner, and J. Welker, Temperature and Microtopography Interact to Control Carbon Cycling in a High Arctic Fen, Ecosystems, vol.40, issue.26, pp.61-76, 2008.
DOI : 10.1007/s10021-007-9107-y

E. Swain and G. Abbott, The effect of redox conditions on sphagnum acid thermochemolysis product distributions in a northern peatland, Journal of Analytical and Applied Pyrolysis, vol.103, pp.2-7, 2013.
DOI : 10.1016/j.jaap.2012.12.022

G. Toor, L. Condron, H. Di, K. Cameron, and B. Cade-menun, Characterization of organic phosphorus in leachate from a grassland soil, Soil Biology and Biochemistry, vol.35, issue.10, pp.1317-1323, 2003.
DOI : 10.1016/S0038-0717(03)00202-5

B. Turner, I. Mckelvie, and P. Haygarth, Characterisation of water-extractable soil organic phosphorus by phosphatase hydrolysis, Soil Biology and Biochemistry, vol.34, issue.1, pp.27-35, 2002.
DOI : 10.1016/S0038-0717(01)00144-4

N. Van-breemen, How Sphagnum bogs down other plants, Trends in Ecology & Evolution, vol.10, issue.7, pp.270-275, 1995.
DOI : 10.1016/0169-5347(95)90007-1

J. Weedon, G. Kowalchuk, R. Aerts, J. Van-hal, R. Van-logtestijn et al., Summer warming accelerates sub-arctic peatland nitrogen cycling without changing enzyme pools or microbial community structure, Global Change Biology, vol.71, issue.1, pp.138-150, 2012.
DOI : 10.1111/j.1365-2486.2011.02548.x

J. Weishaar, G. Aiken, B. Bergamaschi, M. Fram, R. Fujii et al., Evaluation of Specific Ultraviolet Absorbance as an Indicator of the Chemical Composition and Reactivity of Dissolved Organic Carbon, Environmental Science & Technology, vol.37, issue.20, pp.4702-4708, 2003.
DOI : 10.1021/es030360x

S. Wilkinson, Gram-negative bacteria Academic press, Microbial lipids, pp.299-488, 1988.

W. Woodland, D. Charman, and P. Sims, Quantitative estimates of water tables and soil moisture in Holocene peatlands from testate amoebae, The Holocene, vol.8, issue.3, pp.261-273, 1998.
DOI : 10.1191/095968398667004497

I. Wretensjö, L. Svensson, and W. Christie, Gas chromatographic???mass spectrometric identification of the fatty acids in borage oil using the picolinyl ester derivatives, Journal of Chromatography A, vol.521, issue.1, pp.89-97, 1990.
DOI : 10.1016/0021-9673(90)85067-6

T. Yazaki, S. Urano, and K. Yabe, Water balance and water movement in unsaturated zones of Sphagnum hummocks in Fuhrengawa Mire, Hokkaido, Japan, Journal of Hydrology, vol.319, issue.1-4, pp.312-327, 2006.
DOI : 10.1016/j.jhydrol.2005.06.037

C. Zaccone, D. Orazio, V. Shotyk, W. Miano, and T. , Chemical and spectroscopic investigation of porewater and aqueous extracts of corresponding peat samples throughout a bog core (Jura Mountains, Switzerland), Journal of Soils and Sediments, vol.113, issue.5, pp.443-456, 2009.
DOI : 10.1007/s11368-009-0093-x

L. Zelles, Fatty acid patterns of phospholipids and lipopolysaccharides in the characterisation of microbial communities in soil: a review, Biology and Fertility of Soils, vol.29, issue.2, pp.111-129, 1999.
DOI : 10.1007/s003740050533