R. Aerts, J. H. Cornelissen, and E. Dorrepaal, Plant performance in a warmer world: general responses of plants from cold, northern biomes and the importance of winter and spring events. Plant Ecol, pp.65-77, 2006.

R. Aerts, J. H. Cornelissen, E. Dorrepaal, R. S. Van-logtestijn, and T. V. Callaghan, Effects of experimentally imposed climate scenarios on flowering phenology and flower production of subarctic bog species, Global Change Biology, vol.70, issue.1, pp.1599-1609, 2004.
DOI : 10.1111/j.1365-2486.1997.gcb143.x

A. P. Ballantyne, D. R. Greenwood, S. Damsté, J. S. Csank, A. Z. Eberle et al., Significantly warmer Arctic surface temperatures during the Pliocene indicated by multiple independent proxies, Geology, vol.38, issue.7, pp.603-606, 2010.
DOI : 10.1130/G30815.1

A. Bechtel, R. H. Smittenberg, S. M. Bernasconi, and C. J. Schubert, Distribution of branched and isoprenoid tetraether lipids in an oligotrophic and a eutrophic Swiss lake: Insights into sources and GDGT-based proxies, Organic Geochemistry, vol.41, issue.8, pp.822-832, 2010.
DOI : 10.1016/j.orggeochem.2010.04.022

E. Blume, M. Bischoff, J. M. Reichert, T. Moorman, A. Konopka et al., Surface and subsurface microbial biomass, community structure and metabolic activity as a function of soil depth and season, Applied Soil Ecology, vol.20, issue.3, pp.171-181, 2002.
DOI : 10.1016/S0929-1393(02)00025-2

R. S. Clymo, The Limits to Peat Bog Growth, Philosophical Transactions of the Royal Society B: Biological Sciences, vol.303, issue.1117, pp.605-654, 1984.
DOI : 10.1098/rstb.1984.0002

A. Dabros and J. W. 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

A. Dabros, J. W. Fyles, and J. B. Strachan, Effects of open-top chambers on physical properties of air and soil at post-disturbance sites in northwestern Quebec, Plant and Soil, vol.355, issue.Suppl.1, pp.203-218, 2010.
DOI : 10.1007/s11104-010-0336-z

S. N. Dedysh, T. A. Pankratov, S. E. Belova, I. S. Kulichevskaya, and W. Liesack, Phylogenetic Analysis and In Situ Identification of Bacteria Community Composition in an Acidic Sphagnum Peat Bog, Applied and Environmental Microbiology, vol.72, issue.3, pp.2110-2117, 2006.
DOI : 10.1128/AEM.72.3.2110-2117.2006

F. Delarue, F. Laggoun-défarge, A. Buttler, S. Gogo, V. E. 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

T. H. Donders, J. W. Weijers, D. K. Munsterman, M. L. Hoeve, L. K. Buckles et al., Strong climate coupling of terrestrial and marine environments in the Miocene of northwest Europe, Earth and Planetary Science Letters, vol.281, issue.3-4, pp.215-225, 2009.
DOI : 10.1016/j.epsl.2009.02.034

E. Dorrepaal, R. Aerts, J. H. Cornelissen, T. V. Callaghan, and R. S. Van-logtestijn, Summer warming and increased winter snow cover affect Sphagnum fuscum growth, structure and production in a sub-arctic bog, Global Change Biology, vol.86, issue.1, pp.93-104, 2004.
DOI : 10.1007/s004420100691

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

P. M. Groffman, C. T. Driscoll, T. J. Fahey, J. P. Hardy, R. D. Fitzhugh et al., Colder soils in a warmer world: a snow manipulation study in a northern hardwood forest ecosystem, Biogeochemistry, vol.56, issue.2, pp.135-150, 2001.
DOI : 10.1023/A:1013039830323

H. Drotz, S. Sparrman, T. Nilsson, M. B. Schleucher, J. et al., Both catabolic and anabolic heterotrophic microbial activity proceed in frozen soils, Proc. Natl. Acad. Sci. USA, pp.21046-21051, 2010.
DOI : 10.1073/pnas.1008885107

H. R. Harvey, R. D. Fallon, and J. S. Patton, The effect of organic matter and oxygen on the degradation of bacterial membrane lipids in marine sediments, Geochimica et Cosmochimica Acta, vol.50, issue.5, pp.795-804, 1986.
DOI : 10.1016/0016-7037(86)90355-8

R. D. Hollister, Response of wet meadow tundra to interannual and manipulated temperature variation: implications for climate change research, 1998.

E. C. Hopmans, S. Schouten, R. D. Pancost, M. T. Van-der-meer, S. Damsté et al., Analysis of intact tetraether lipids in archaeal cell material and sediments by high performance liquid chromatography/atmospheric pressure chemical ionization mass spectrometry, Rapid Communications in Mass Spectrometry, vol.266, issue.7, pp.585-589, 2000.
DOI : 10.1002/(SICI)1097-0231(20000415)14:7<585::AID-RCM913>3.0.CO;2-N

E. C. Hopmans, J. W. Weijers, E. Schefuß, L. Herfort, S. Damsté et al., A novel proxy for terrestrial organic matter in sediments based on branched and isoprenoid tetraether lipids, Earth and Planetary Science Letters, vol.224, issue.1-2, pp.107-116, 2004.
DOI : 10.1016/j.epsl.2004.05.012

A. Huguet, C. Fosse, P. Metzger, E. Fritsch, and S. Derenne, Occurrence and distribution of extractable glycerol dialkyl glycerol tetraethers in podzols, Organic Geochemistry, vol.41, issue.3, pp.291-301, 2010.
DOI : 10.1016/j.orggeochem.2009.10.007
URL : https://hal.archives-ouvertes.fr/bioemco-00575818

A. Huguet, C. Fosse, F. Laggoun-défarge, M. Toussaint, and S. Derenne, Occurrence and distribution of glycerol dialkyl glycerol tetraethers in a French peat bog, Organic Geochemistry, vol.41, issue.6, pp.559-572, 2010.
DOI : 10.1016/j.orggeochem.2010.02.015
URL : https://hal.archives-ouvertes.fr/insu-00460433

V. E. 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

S. E. Jørgensen, Ecosystem Ecology, 2009.

J. Kim, W. Ludwig, S. Schouten, P. Kerhervé, L. Herfort et al., Impact of flood events on the transport of terrestrial organic matter to the ocean: A study of the T??t River (SW France) using the BIT index, Organic Geochemistry, vol.38, issue.10, pp.1593-1606, 2007.
DOI : 10.1016/j.orggeochem.2007.06.010

J. Kim, H. M. Talbot, B. Zarzycka, T. Bauersachs, and T. Wagner, Occurrence and abundance of soil-specific bacterial membrane lipid markers in the T??t watershed (southern France): Soil-specific BHPs and branched GDGTs, Geochemistry, Geophysics, Geosystems, vol.113, issue.299, 2011.
DOI : 10.1029/2010GC003364

R. Laiho, Decomposition in peatlands: Reconciling seemingly contrasting results on the impacts of lowered water levels, Soil Biology and Biochemistry, vol.38, issue.8, pp.2011-2024, 2006.
DOI : 10.1016/j.soilbio.2006.02.017

J. S. Lipp and K. Hinrichs, Structural diversity and fate of intact polar lipids in marine sediments, Geochimica et Cosmochimica Acta, vol.73, issue.22, pp.6816-6833, 2009.
DOI : 10.1016/j.gca.2009.08.003

X. Liu, A. Leider, A. Gillepsie, J. Grö-ger, G. J. Verstegh et al., Identification of polar lipid precursors of the ubiquitous branched GDGT orphan lipids in a peat bog in Northern Germany, Organic Geochemistry, vol.41, issue.7, pp.653-660, 2010.
DOI : 10.1016/j.orggeochem.2010.04.004

S. E. Loomis, J. M. Russell, S. Damsté, and J. S. , Distributions of branched GDGTs in soils and lake sediments from western Uganda: Implications for a lacustrine paleothermometer, Organic Geochemistry, vol.42, issue.7, pp.739-751, 2011.
DOI : 10.1016/j.orggeochem.2011.06.004

G. M. Marion, G. H. Henry, D. W. 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

E. J. Pearson, S. Juggins, H. M. Talbot, J. Weckströ-m, P. Rosén et al., A lacustrine GDGT-temperature calibration from the Scandinavian Arctic to Antarctic: Renewed potential for the application of GDGT-paleothermometry in lakes, Geochimica et Cosmochimica Acta, vol.75, issue.20, pp.6225-6238, 2011.
DOI : 10.1016/j.gca.2011.07.042

F. Peterse, S. Schouten, J. Van-der-meer, M. T. Van-deer-meer, S. Damsté et al., Distribution of branched tetraether lipids in geothermally heated soils: Implications for the MBT/CBT temperature proxy, Organic Geochemistry, vol.40, issue.2, pp.201-205, 2009.
DOI : 10.1016/j.orggeochem.2008.10.010

F. Peterse, M. T. Van-der-meer, S. Schouten, G. Jia, J. Ossebaar et al., Assessment of soil <i>n</i>-alkane δ<i>D</i> and branched tetraether membrane lipid distributions as tools for paleoelevation reconstruction, Biogeosciences, vol.6, issue.12, pp.2799-2807, 2009.
DOI : 10.5194/bg-6-2799-2009

F. Peterse, G. W. Nicol, S. Schouten, S. Damsté, and J. S. , Influence of soil pH on the abundance and distribution of core and intact polar lipid-derived branched GDGTs in soil, Organic Geochemistry, vol.41, issue.10, pp.1171-1175, 2010.
DOI : 10.1016/j.orggeochem.2010.07.004

F. Peterse, M. A. Prins, C. J. Beets, S. R. Troelstra, H. Zheng et al., Decoupled warming and monsoon precipitation in East Asia over the last deglaciation, Earth and Planetary Science Letters, vol.301, issue.1-2, pp.256-264, 2011.
DOI : 10.1016/j.epsl.2010.11.010

F. Peterse, E. C. Hopmans, S. Schouten, A. Mets, I. C. Rijpstra et al., Identification and distribution of intact polar branched tetraether lipids in peat and soil, Organic Geochemistry, vol.42, issue.9, pp.1007-1015, 2011.
DOI : 10.1016/j.orggeochem.2011.07.006

N. J. Rosenberg, B. L. Blad, and S. B. Verma, ) Microclimate; the Biological Environment, 1983.

G. Rueda, A. Rosell-melé, M. Escala, R. Gyllencreutz, and J. Backman, Comparison of instrumental and GDGT-based estimates of sea surface and air temperatures from the Skagerrak, Organic Geochemistry, vol.40, issue.2, pp.287-291, 2009.
DOI : 10.1016/j.orggeochem.2008.10.012

S. Damsté, J. S. Hopmans, E. C. Pancost, R. D. Schouten, S. Geenevasen et al., Newly discovered nonisoprenoid glycerol dialkyl glycerol tetraether lipids in sediments, Chem. Commun, pp.1683-1684, 2000.

S. Damsté, J. S. Ossebaar, J. Schouten, S. Verschuren, and D. , Altitudinal shifts in the branched tetraether lipid distribution in soil from Mt. Kilimanjaro (Tanzania): Implications for the MBT/CBT continental palaeothermometer, Organic Geochemistry, vol.39, issue.8, pp.1072-1076, 2008.
DOI : 10.1016/j.orggeochem.2007.11.011

S. Damsté, J. S. Rijpstra, W. I. Hopmans, E. C. Weijers, J. W. Foesel et al., 16-Dimethyl octacosanedioic acid (iso-diabolic acid), a common membrane-spanning lipid of Acidobacteria subdivisions 1 and 3, Appl. Environ. Microb, vol.13, issue.77, pp.4147-4154, 2011.

S. Svenson and D. H. Thompson, Facile and efficient synthesis of bolaamphilic tetraether phosphocholines, J. Org. Chem, vol.21, pp.7180-7182, 1998.

J. E. Tierney and J. M. Russell, Distributions of branched GDGTs in a tropical lake system: Implications for lacustrine application of the MBT/CBT paleoproxy, Organic Geochemistry, vol.40, issue.9, pp.1032-1036, 2009.
DOI : 10.1016/j.orggeochem.2009.04.014

J. E. Tierney, J. M. Russell, H. Eggermont, E. C. Hopmans, D. Verschuren et al., Environmental controls on branched tetraether lipid distributions in tropical East African lake sediments, Geochimica et Cosmochimica Acta, vol.74, issue.17, pp.4902-4918, 2010.
DOI : 10.1016/j.gca.2010.06.002

J. W. Weijers, S. Schouten, E. C. Hopmans, J. A. Geenevasen, O. R. David et al., Membrane lipids of mesophilic anaerobic bacteria thriving in peats have typical archaeal traits, Environmental Microbiology, vol.87, issue.4, pp.648-657, 2006.
DOI : 10.1016/S0146-6380(03)00003-2

J. W. Weijers, S. Schouten, J. C. Van-den-donker, E. C. Hopmans, S. Damsté et al., Environmental controls on bacterial tetraether membrane lipid distribution in soils, Geochimica et Cosmochimica Acta, vol.71, issue.3, pp.703-713, 2007.
DOI : 10.1016/j.gca.2006.10.003

J. W. Weijers, E. Schefuss, S. Schouten, S. Damsté, and J. S. , Coupled Thermal and Hydrological Evolution of Tropical Africa over the Last Deglaciation, Science, vol.315, issue.5819, pp.1701-1704, 2007.
DOI : 10.1126/science.1138131

J. W. Weijers, E. Panoto, J. Van-bleijswijk, S. Schouten, W. I. Rijpstra et al., Constraints on the Biological Source(s) of the Orphan Branched Tetraether Membrane Lipids, Geomicrobiology Journal, vol.59, issue.6, pp.402-414, 2009.
DOI : 10.1080/01490450500248986

J. W. Weijers, G. L. Wiesenberg, R. Bol, E. C. Hopmans, and R. D. Pancost, Carbon isotopic composition of branched tetraether membrane lipids in soils suggest a rapid turnover and a heterotrophic life style of their source organism(s), Biogeosciences, vol.7, issue.9, pp.2959-2973, 2010.
DOI : 10.5194/bg-7-2959-2010

J. W. Weijers, B. Bernhardt, F. Peterse, J. P. Werne, A. J. Dungait et al., Absence of seasonal patterns in MBT???CBT indices in mid-latitude soils, Geochimica et Cosmochimica Acta, vol.75, issue.11, pp.3179-3190, 2011.
DOI : 10.1016/j.gca.2011.03.015

J. W. Weijers, P. Steinmann, E. C. Hopmans, S. Schouten, S. Damsté et al., Bacterial tetraether membrane lipids in peat and coal: Testing the MBT???CBT temperature proxy for climate reconstruction, Organic Geochemistry, vol.42, issue.5, pp.477-486, 2011.
DOI : 10.1016/j.orggeochem.2011.03.013

D. C. White, W. M. Davis, J. S. Nickels, J. D. King, and R. J. Bobbie, Determination of the sedimentary microbial biomass by extractible lipid phosphate, Oecologia, vol.112, issue.1, pp.51-62, 1979.
DOI : 10.1007/BF00388810

K. Zink, M. J. Vandergoes, K. Mangelsdorf, A. C. Dieffenbacher-krall, and L. Schwark, Application of bacterial glycerol dialkyl glycerol tetraethers (GDGTs) to develop modern and past temperature estimates from New Zealand lakes, Organic Geochemistry, vol.41, issue.9, pp.1060-1066, 2010.
DOI : 10.1016/j.orggeochem.2010.03.004