Articles | Volume 27, issue 21
https://doi.org/10.5194/hess-27-3935-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-27-3935-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Nov 2023
Research article |
| 07 Nov 2023
| 07 Nov 2023
Hydrological connectivity controls dissolved organic carbon exports in a peatland-dominated boreal catchment stream
Centre de Recherche sur la Dynamique du Système Terre (GÉOTOP), Université du Québec à Montréal, Montréal, Quebec, Canada
Groupe de Recherche Inter-universitaire en Limnologie (GRIL), Université du Québec à Montréal, Montréal, Quebec, Canada
Institut des Sciences de l'Environnement (ISE), Université du Québec à Montréal, Montréal, Quebec, Canada
Laure Gandois
CORRESPONDING AUTHOR
Laboratoire Écologie Fonctionnelle et Environnement, UMR 5245, CNRS-UPS-INPT, Toulouse, France
Pierre Taillardat
Centre de Recherche sur la Dynamique du Système Terre (GÉOTOP), Université du Québec à Montréal, Montréal, Quebec, Canada
Groupe de Recherche Inter-universitaire en Limnologie (GRIL), Université du Québec à Montréal, Montréal, Quebec, Canada
NUS Environmental Research Institute, National University of Singapore, Singapore
Marc-André Bourgault
Département de Géographie, Université Laval, Québec, Quebec, Canada
Khawla Riahi
Centre Eau, Terre et Environnement, Institut National de la Recherche Scientifique, Québec, Quebec, Canada
Alex Ponçot
Centre de Recherche sur la Dynamique du Système Terre (GÉOTOP), Université du Québec à Montréal, Montréal, Quebec, Canada
Alain Tremblay
Programme Gaz à Effet de Serre, Hydro Québec, Montréal, Quebec, Canada
Michelle Garneau
Centre de Recherche sur la Dynamique du Système Terre (GÉOTOP), Université du Québec à Montréal, Montréal, Quebec, Canada
Groupe de Recherche Inter-universitaire en Limnologie (GRIL), Université du Québec à Montréal, Montréal, Quebec, Canada
Institut des Sciences de l'Environnement (ISE), Université du Québec à Montréal, Montréal, Quebec, Canada
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Cited articles
Ågren, A., Haei, M., Köhler, S. J., Bishop, K., and Laudon, H.: Regulation of stream water dissolved organic carbon (DOC) concentrations during snowmelt; the role of discharge, winter climate and memory effects, Biogeosciences, 7, 2901–2913, https://doi.org/10.5194/bg-7-2901-2010, 2010.
Aho, K. S. and Raymond, P. A.: Differential Response of Greenhouse Gas Evasion to Storms in Forested and Wetland Streams, J. Geophys. Res.-Biogeo., 124, 649–662, https://doi.org/10.1029/2018JG004750, 2019.
Austnes, K., Evans, C. D., Eliot-Laize, C., Naden, P. S., and Old, G. H.: Effects of storm events on mobilisation and in-stream processing of dissolved organic matter (DOM) in a Welsh peatland catchment, Biogeochemistry, 99, 157–173, https://doi.org/10.1007/s10533-009-9399-4, 2010.
Billett, M. F., Deacon, C. M., Palmer, S. M., Dawson, J. J. C., and Hope, D.: Connecting organic carbon in stream water and soils in a peatland catchment, J. Geophys. Res.-Biogeo., 111, G02010, https://doi.org/10.1029/2005JG000065, 2006.
Billett, M. F., Dinsmore, K. J., Smart, R. P., Garnett, M. H., Holden, J., Chapman, P., Baird, A. J., Grayson, R., and Stott, A. W.: Variable source and age of different forms of carbon released from natural peatland pipes, J. Geophys. Res.-Biogeo., 117, G02003, https://doi.org/10.1029/2011JG001807, 2012.
Birkel, C., Broder, T., and Biester, H.: Nonlinear and threshold-dominated runoff generation controls DOC export in a small peat catchment, J. Geophys. Res.-Biogeo., 122, 498–513, https://doi.org/10.1002/2016JG003621, 2017.
Bishop, K., Seibert, J., Köhler, S., and Laudon, H.: Resolving the Double Paradox of rapidly mobilized old water with highly variable responses in runoff chemistry, Hydrol. Process., 18, 185–189, https://doi.org/10.1002/hyp.5209, 2004.
Blaurock, K., Beudert, B., Gilfedder, B. S., Fleckenstein, J. H., Peiffer, S., and Hopp, L.: Low hydrological connectivity after summer drought inhibits DOC export in a forested headwater catchment, Hydrol. Earth Syst. Sci., 25, 5133–5151, https://doi.org/10.5194/hess-25-5133-2021, 2021.
Buzek, F., Novak, M., Cejkova, B., Jackova, I., Curik, J., Veselovsky, F., Stepanova, M., Prechova, E., and Bohdalkova, L.: Assessing DOC export from a Sphagnum-dominated peatland using δ13C and δ18O–H2O stable isotopes, Hydrol. Process., 33, 2792–2803, https://doi.org/10.1002/hyp.13528, 2019.
Casas-Ruiz, J. P., Catalán, N., Gómez-Gener, L., von Schiller, D., Obrador, B., Kothawala, D. N., López, P., Sabater, S., and Marcé, R.: A tale of pipes and reactors: Controls on the in-stream dynamics of dissolved organic matter in rivers: Controls on in-stream DOM dynamics, Limnol. Oceanogr., 62, S85–S94, https://doi.org/10.1002/lno.10471, 2017.
Clark, J. M., Lane, S. N., Chapman, P. J., and Adamson, J. K.: Export of dissolved organic carbon from an upland peatland during storm events: Implications for flux estimates, J. Hydrol., 347, 438–447, https://doi.org/10.1016/j.jhydrol.2007.09.030, 2007.
Clark, J. M., Ashley, D., Wagner, M., Chapman, P. J., Lane, S. N., Evans, C. D., and Heathwaite, A. L.: Increased temperature sensitivity of net DOC production from ombrotrophic peat due to water table draw-down, Glob. Change Biol., 15, 794–807, https://doi.org/10.1111/j.1365-2486.2008.01683.x, 2009.
Cook, S., Whelan, M. J., Evans, C. D., Gauci, V., Peacock, M., Garnett, M. H., Kho, L. K., Teh, Y. A., and Page, S. E.: Fluvial organic carbon fluxes from oil palm plantations on tropical peatland, Biogeosciences, 15, 7435–7450, https://doi.org/10.5194/bg-15-7435-2018, 2018.
Dean, J. F., Garnett, M. H., Spyrakos, E., and Billett, M. F.: The Potential Hidden Age of Dissolved Organic Carbon Exported by Peatland Streams, J. Geophys. Res., 124, 328–341, https://doi.org/10.1029/ 2018JG004650, 2019.
de Oliveira, G., Bertone, E., Stewart, R., Awad, J., Holland, A., O’Halloran, K., and Bird, S.: Multi-Parameter Compensation Method for Accurate In Situ Fluorescent Dissolved Organic Matter Monitoring and Properties Characterization, Water, 10, 1146, https://doi.org/10.3390/w10091146, 2018.
Dick, J. J., Tetzlaff, D., Birkel, C., and Soulsby, C.: Modelling landscape controls on dissolved organic carbon sources and fluxes to streams, Biogeochemistry, 122, 361–374, https://doi.org/10.1007/s10533-014-0046-3, 2015.
Dinsmore, K. J., Billett, M. F., and Dyson, K. E.: Temperature and precipitation drive temporal variability in aquatic carbon and GHG concentrations and fluxes in a peatland catchment, Glob. Change Biol., 19, 2133–2148, https://doi.org/10.1111/gcb.12209, 2013.
Dubois, J. M. M.: Environments quaternaires et évolution postglaciaire d’une zone côtière en émersion en bordure sud du bouclier canadien: la moyennne Côte Nord du Saint-Laurent, Québec, University of Ottawa, Ottawa, https://doi.org/10.20381/ruor-15610, 1980.
Dyson, K. E., Billett, M. F., Dinsmore, K. J., Harvey, F., Thomson, A. M., Piirainen, S., and Kortelainen, P.: Release of aquatic carbon from two peatland catchments in E. Finland during the spring snowmelt period, Biogeochemistry, 103, 125–142, https://doi.org/10.1007/s10533-010-9452-3, 2011.
Freeman, C., Evans, C. D., Monteith, D. T., Reynolds, B., and Fenner, N.: Export of organic carbon from peat soils, Nature, 412, 785–785, https://doi.org/10.1038/35090628, 2001.
Frei, S., Lischeid, G., and Fleckenstein, J. H.: Effects of micro-topography on surface–subsurface exchange and runoff generation in a virtual riparian wetland — A modeling study, Adv. Water Resour., 33, 1388–1401, https://doi.org/10.1016/j.advwatres.2010.07.006, 2010.
Glatzel, S., Lemke, S., and Gerold, G.: Short-term effects of an exceptionally hot and dry summer on decomposition of surface peat in a restored temperate bog, Eur. J. Soil Biol., 42, 219–229, https://doi.org/10.1016/j.ejsobi.2006.03.003, 2006.
Godsey, S. E., Kirchner, J. W., and Clow, D. W.: Concentration-discharge relationships reflect chemostatic characteristics of US catchments, Hydrol. Process., 23, 1844–1864, https://doi.org/10.1002/hyp.7315, 2009.
Godsey, S. E., Hartmann, J., and Kirchner, J. W.: Catchment chemostasis revisited: Water quality responds differently to variations in weather and climate, Hydrol. Process., 33, 3056–3069, https://doi.org/10.1002/hyp.13554, 2019.
Grand-Clement, E., Luscombe, D. J., Anderson, K., Gatis, N., Benaud, P., and Brazier, R. E.: Antecedent conditions control carbon loss and downstream water quality from shallow, damaged peatlands, Sci. Total Environ., 493, 961–973, https://doi.org/10.1016/j.scitotenv.2014.06.091, 2014.
Guertin, D. P., Barten, P. K., and Brooks, K. N.: The Peatland Hydrologic Impact Model: Development and Testing, Hydrol. Res., 18, 79–100, https://doi.org/10.2166/nh.1987.0007, 1987.
Guilpart, E., Espanmanesh, V., Tilmant, A., and Anctil, F.: Combining split-sample testing and hidden Markov modelling to assess the robustness of hydrological models, Hydrol. Earth Syst. Sci., 25, 4611–4629, https://doi.org/10.5194/hess-25-4611-2021, 2021.
Harte, D.: Hidden Markov Models,1.8-13, https://www.statsresearch.co.nz/dsh/sslib/ (last access: 18 October 2023), 2021.
Holden, J. and Burt, T. P.: Runoff production in blanket peat covered catchments: BLANKET PEAT RUNOFF, Water Resour. Res., 39, 1191, https://doi.org/10.1029/2002WR001956, 2003.
Holden, J., Smart, R. P., Dinsmore, K. J., Baird, A. J., Billett, M. F., and Chapman, P. J.: Natural pipes in blanket peatlands: major point sources for the release of carbon to the aquatic system, Glob. Change Biol., 18, 3568–3580, https://doi.org/10.1111/gcb.12004, 2012.
Huotari, J., Nykänen, H., Forsius, M., and Arvola, L.: Effect of catchment characteristics on aquatic carbon export from a boreal catchment and its importance in regional carbon cycling, Glob. Change Biol., 19, 3607–3620, https://doi.org/10.1111/gcb.12333, 2013.
Inamdar, S. P., Christopher, S. F., and Mitchell, M. J.: Export mechanisms for dissolved organic carbon and nitrate during summer storm events in a glaciated forested catchment in New York, USA, Hydrol. Process., 18, 2651–2661, https://doi.org/10.1002/hyp.5572, 2004.
Jutebring Sterte, E., Lidman, F., Sjöberg, Y., Ploum, S. W., and Laudon, H.: Groundwater travel times predict DOC in streams and riparian soils across a heterogeneous boreal landscape, Sci. Total Environ., 849, 157398, https://doi.org/10.1016/j.scitotenv.2022.157398, 2022.
Juutinen, S., Väliranta, M., Kuutti, V., Laine, A. M., Virtanen, T., Seppä, H., Weckström, J., and Tuittila, E.-S.: Short-term and long-term carbon dynamics in a northern peatland-stream-lake continuum: A catchment approach, J. Geophys. Res.-Biogeo., 118, 171–183, https://doi.org/10.1002/jgrg.20028, 2013.
Kalbitz, K., Solinger, S., Park, J.-H., Michalzik, B., and Matzner, E.: CONTROLS ON THE DYNAMICS OF DISSOLVED ORGANIC MATTER IN SOILS: A REVIEW:, Soil Science, 165, 277–304, https://doi.org/10.1097/00010694-200004000-00001, 2000.
Kehagias, Ath.: A hidden Markov model segmentation procedure for hydrological and environmental time series, Stoch. Env. Res. Risk A., 18, 117–130, https://doi.org/10.1007/s00477-003-0145-5, 2004.
Koehler, A.-K., Murphy, K., Kiely, G., and Sottocornola, M.: Seasonal variation of DOC concentration and annual loss of DOC from an Atlantic blanket bog in South Western Ireland, Biogeochemistry, 95, 231–242, https://doi.org/10.1007/s10533-009-9333-9, 2009.
Köhler, S. J., Buffam, I., Laudon, H., and Bishop, K. H.: Climate's control of intra-annual and interannual variability of total organic carbon concentration and flux in two contrasting boreal landscape elements, J. Geophys. Res., 113, G03012, https://doi.org/10.1029/2007JG000629, 2008.
Laudon, H., Berggren, M., Ågren, A., Buffam, I., Bishop, K., Grabs, T., Jansson, M., and Köhler, S.: Patterns and Dynamics of Dissolved Organic Carbon (DOC) in Boreal Streams: The Role of Processes, Connectivity, and Scaling, Ecosystems, 14, 880–893, https://doi.org/10.1007/s10021-011-9452-8, 2011.
Laudon, H., Buttle, J., Carey, S. K., McDonnell, J., McGuire, K., Seibert, J., Shanley, J., Soulsby, C., and Tetzlaff, D.: Cross-regional prediction of long-term trajectory of stream water DOC response to climate change, Geophys. Res. Lett., 39, https://doi.org/10.1029/2012GL053033, 2012.
Leach, J. A., Larsson, A., Wallin, M. B., Nilsson, M. B., and Laudon, H.: Twelve year interannual and seasonal variability of stream carbon export from a boreal peatland catchment, J. Geophys. Res.-Biogeo., 121, 1851–1866, https://doi.org/10.1002/2016JG003357, 2016.
Lloyd, C. E. M., Freer, J. E., Johnes, P. J., and Collins, A. L.: Technical Note: Testing an improved index for analysing storm discharge–concentration hysteresis, Hydrol. Earth Syst. Sci., 20, 625–632, https://doi.org/10.5194/hess-20-625-2016, 2016.
Nilsson, M., Sagerfors, J., Buffam, I., Laudon, H., Eriksson, T., Grelle, A., Klemedtsson, L., Weslien, P., and Lindroth, A.: Contemporary carbon accumulation in a boreal oligotrophic minerogenic mire – a significant sink after accounting for all C-fluxes, Glob. Change Biol., 14, 2317–2332, https://doi.org/10.1111/j.1365-2486.2008.01654.x, 2008.
Olefeldt, D., Roulet, N., Giesler, R., and Persson, A.: Total waterborne carbon export and DOC composition from ten nested subarctic peatland catchments-importance of peatland cover, groundwater influence, and inter-annual variability of precipitation patterns, Hydrol. Process., 27, 2280–2294, https://doi.org/10.1002/hyp.9358, 2013.
Payette, S.: Le contexte physique et biogéographique, in: Écologie des tourbières du Québec-Labrador, Presses de l’Université Laval, Québec, 9–37, ISBN 9782763777733, 2001.
Pellerin, B. A., Saraceno, J. F., Shanley, J. B., Sebestyen, S. D., Aiken, G. R., Wollheim, W. M., and Bergamaschi, B. A.: Taking the pulse of snowmelt: in situ sensors reveal seasonal, event and diurnal patterns of nitrate and dissolved organic matter variability in an upland forest stream, Biogeochemistry, 108, 183–198, https://doi.org/10.1007/s10533-011-9589-8, 2012.
Prijac, A.: High-frequency monitoring of dissolved organic carbon exports, stream discharge and water table depth in a peatland-dominated boreal catchment, Minganie, Quebec, Canada, PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.959045, 2023.
Prijac, A., Gandois, L., Jeanneau, L., Taillardat, P., and Garneau, M.: Dissolved organic matter concentration and composition discontinuity at the peat–pool interface in a boreal peatland, Biogeosciences, 19, 4571–4588, https://doi.org/10.5194/bg-19-4571-2022, 2022.
Primeau, G. and Garneau, M.: Carbon accumulation in peatlands along a boreal to subarctic transect in eastern Canada, Holocene, 31, 858–869, https://doi.org/10.1177/0959683620988031, 2021.
Rasilo, T., Hutchins, R. H. S., Ruiz-González, C., and del Giorgio, P. A.: Transport and transformation of soil-derived CO2, CH4 and DOC sustain CO2 supersaturation in small boreal streams, Sci. Total Environ., 579, 902–912, https://doi.org/10.1016/j.scitotenv.2016.10.187, 2017.
Raymond, P. A. and Saiers, J. E.: Event controlled DOC export from forested watersheds, Biogeochemistry, 100, 197–209, https://doi.org/10.1007/s10533-010-9416-7, 2010.
Raymond, P. A., Saiers, J. E., and Sobczak, W. V.: Hydrological and biogeochemical controls on watershed dissolved organic matter transport: pulse-shunt concept, Ecology, 97, 5–16, https://doi.org/10.1890/14-1684.1, 2016.
Riahi, K.: Analyse du bilan hydrologique d'une tourbière ombrotrophe située dans le bassin versant de la rivière Romaine, Côte-Nord, Québec, Maîtrise en Sciences de la Terre, Université du Québec, Institut National de la Recherche Scientifique, Québec, 83 pp., https://espace.inrs.ca/id/eprint/12054 (last access: 18 October 2023), 2021.
Rosset, T., Gandois, L., Le Roux, G., Teisserenc, R., Durantez Jimenez, P., Camboulive, T., and Binet, S.: Peatland Contribution to Stream Organic Carbon Exports From a Montane Watershed, J. Geophys. Res.-Biogeo., 124, 3448–3464, https://doi.org/10.1029/2019JG005142, 2019.
Rosset, T., Binet, S., Antoine, J.-M., Lerigoleur, E., Rigal, F., and Gandois, L.: Drivers of seasonal- and event-scale DOC dynamics at the outlet of mountainous peatlands revealed by high-frequency monitoring, Biogeosciences, 17, 3705–3722, https://doi.org/10.5194/bg-17-3705-2020, 2020.
Rosset, T., Binet, S., Rigal, F., and Gandois, L.: Peatland Dissolved Organic Carbon Export to Surface Waters: Global Significance and Effects of Anthropogenic Disturbance, Geophys. Res. Lett., 49, e2021GL096616, https://doi.org/10.1029/2021GL096616, 2022.
Roulet, N. T., Lafleur, P. M., Richard, P. J. H., Moore, T. R., Humphreys, E. R., and Bubier, J.: Contemporary carbon balance and late Holocene carbon accumulation in a northern peatland, Glob. Change Biol., 13, 397–411, https://doi.org/10.1111/j.1365-2486.2006.01292.x, 2007.
Shein, J.: Discharge characteristics of triangular-notch thin-plate weirs, U.S. Geological Survey, Washington, DC, https://doi.org/10.3133/wsp1617B, 1979.
Strohmeier, S., Knorr, K.-H., Reichert, M., Frei, S., Fleckenstein, J. H., Peiffer, S., and Matzner, E.: Concentrations and fluxes of dissolved organic carbon in runoff from a forested catchment: insights from high frequency measurements, Biogeosciences, 10, 905–916, https://doi.org/10.5194/bg-10-905-2013, 2013.
Taillardat, P., Bodmer, P., Deblois, C. P., Ponçot, A., Prijac, A., Riahi, K., Gandois, L., del Giorgio, P. A., Bourgault, M. A., Tremblay, A., and Garneau, M.: Carbon Dioxide and Methane Dynamics in a Peatland Headwater Stream: Origins, Processes and Implications, J. Geophys. Res.-Biogeo., 127, e2022JG006855, https://doi.org/10.1029/2022JG006855, 2022.
Tipping, E., Billett, M. F., Bryant, C. L., Buckingham, S., and Thacker, S. A.: Sources and ages of dissolved organic matter in peatland streams: evidence from chemistry mixture modelling and radiocarbon data, Biogeochemistry, 100, 121–137, https://doi.org/10.1007/s10533-010-9409-6, 2010.
Tiwari, T., Sponseller, R. A., and Laudon, H.: Extreme Climate Effects on Dissolved Organic Carbon Concentrations During Snowmelt, J. Geophys. Res.-Biogeo., 123, 1277–1288, https://doi.org/10.1002/2017JG004272, 2018.
Tunaley, C., Tetzlaff, D., Lessels, J., and Soulsby, C.: Linking high-frequency DOC dynamics to the age of connected water sources, Water Resour. Res., 52, 5232–5247, https://doi.org/10.1002/2015WR018419, 2016.
Tunaley, C., Tetzlaff, D., and Soulsby, C.: Scaling effects of riparian peatlands on stable isotopes in runoff and DOC mobilisation, J. Hydrol., 549, 220–235, https://doi.org/10.1016/j.jhydrol.2017.03.056, 2017.
Vaughan, M. C. H., Bowden, W. B., Shanley, J. B., Vermilyea, A., Sleeper, R., Gold, A. J., Pradhanang, S. M., Inamdar, S. P., Levia, D. F., Andres, A. S., Birgand, F., and Schroth, A. W.: High-frequency dissolved organic carbon and nitrate measurements reveal differences in storm hysteresis and loading in relation to land cover and seasonality, Water Resour. Res., 53, 5345–5363, https://doi.org/10.1002/2017WR020491, 2017.
Visser, I. and Speekenbrink, M.: depmixS4: An R Package for Hidden Markov Models, J. Stat. Softw., 36, https://doi.org/10.18637/jss.v036.i07, 2010.
Wallin, M. B., Grabs, T., Buffam, I., Laudon, H., Ågren, A., Öquist, M. G., and Bishop, K.: Evasion of CO2 from streams - The dominant component of the carbon export through the aquatic conduit in a boreal landscape, Glob. Change Biol., 19, 785–797, https://doi.org/10.1111/gcb.12083, 2013.
Webb, J. R., Santos, I. R., Maher, D. T., and Finlay, K.: The Importance of Aquatic Carbon Fluxes in Net Ecosystem Carbon Budgets: A Catchment-Scale Review, Ecosystems, 22, 508–527, https://doi.org/10.1007/s10021-018-0284-7, 2019.
Wickham, H.: ggplot2 Elegant Graphics for Data Analysis, Second Edition, Springer International Publishing, XVI, 260 pp., https://doi.org/10.1007/978-3-319-24277-4, 2016.
Worrall, F., Burt, T. P., Jaeban, R. Y., Warburton, J., and Shedden, R.: Release of dissolved organic carbon from upland peat, Hydrol. Process., 16, 3487–3504, https://doi.org/10.1002/hyp.1111, 2002.
Worrall, F., Gibson, H. S., and Burt, T. P.: Production vs. solubility in controlling runoff of DOC from peat soils – The use of an event analysis, J. Hydrol., 358, 84–95, https://doi.org/10.1016/j.jhydrol.2008.05.037, 2008.
Worrall, F., Burt, T. P., Rowson, J. G., Warburton, J., and Adamson, J. K.: The multi-annual carbon budget of a peat-covered catchment, Sci. Total Environ., 407, 4084–4094, https://doi.org/10.1016/j.scitotenv.2009.03.008, 2009.
Zarnetske, J. P., Bouda, M., Abbott, B. W., Saiers, J., and Raymond, P. A.: Generality of Hydrologic Transport Limitation of Watershed Organic Carbon Flux Across Ecoregions of the United States, Geophys. Res. Lett., 45, https://doi.org/10.1029/2018GL080005, 2018.
Zhu, X., Chen, L., Pumpanen, J., Ojala, A., Zobitz, J., Zhou, X., Laudon, H., Palviainen, M., Neitola, K., and Berninger, F.: The role of terrestrial productivity and hydrology in regulating aquatic dissolved organic carbon concentrations in boreal catchments, Glob. Change Biol., 28, 2764–2778, https://doi.org/10.1111/gcb.16094, 2022.
Short summary
The peatland dissolved organic carbon (DOC) lost through aquatic exports can offset a significant proportion of the ecosystem carbon balance. Hence, we propose a new approach to better estimate the DOC exports based on the specific contribution of a boreal peatland (Canada) during periods of high flow. In addition, we studied the relations between DOC concentrations and stream discharge in order to better understand the DOC export mechanisms under contrasted hydrometeorological conditions.
The peatland dissolved organic carbon (DOC) lost through aquatic exports can offset a...
