Articles | Volume 17, issue 13
https://doi.org/10.5194/bg-17-3705-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-3705-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Jul 2020
Research article |
| 15 Jul 2020
| 15 Jul 2020
Drivers of seasonal- and event-scale DOC dynamics at the outlet of mountainous peatlands revealed by high-frequency monitoring
EcoLab, Université de Toulouse, CNRS, Toulouse, 31326, France
Stéphane Binet
Université d'Orléans, CNRS/INSU, BRGM, ISTO, Orléans,
45071, France
Jean-Marc Antoine
GEODE, Université de Toulouse, CNRS, Toulouse, 31058, France
Emilie Lerigoleur
GEODE, Université de Toulouse, CNRS, Toulouse, 31058, France
François Rigal
IPREM, Université de Pau et des Pays de l'Adour, CNRS, Pau,
64000, France
Laure Gandois
EcoLab, Université de Toulouse, CNRS, Toulouse, 31326, France
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Laure Gandois, Alison M. Hoyt, Stéphane Mounier, Gaël Le Roux, Charles F. Harvey, Adrien Claustres, Mohammed Nuriman, and Gusti Anshari
Biogeosciences, 17, 1897–1909, https://doi.org/10.5194/bg-17-1897-2020, https://doi.org/10.5194/bg-17-1897-2020, 2020
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Worldwide, peatlands are important sources of dissolved organic matter (DOM) and trace metals (TMs) to surface waters, and these fluxes may increase with peatland degradation. In Southeast Asia, tropical peatlands are being rapidly deforested and drained. This work aims to address the fate of organic carbon and its role as a trace metal carrier in drained peatlands of Indonesia.
Léonard Bernard-Jannin, Stéphane Binet, Sébastien Gogo, Fabien Leroy, Christian Défarge, Nevila Jozja, Renata Zocatelli, Laurent Perdereau, and Fatima Laggoun-Défarge
Hydrol. Earth Syst. Sci., 22, 4907–4920, https://doi.org/10.5194/hess-22-4907-2018, https://doi.org/10.5194/hess-22-4907-2018, 2018
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Peatlands are a major stock of carbon that can be released as dissolved organic carbon (DOC), affecting carbon balance and downstream water quality. This study investigates the impact of peatland restoration on water balance and DOC exports using a simple modelling approach. The results suggest that the restoration can affect the water balance and the dynamics of DOC in the peatland. However, there is no major impact in the quantity of DOC released in a short-term period (3 years).
Related subject area
Biogeochemistry: Wetlands
Shoulder season controls on methane emissions from a boreal peatland
Patterns and drivers of organic matter decomposition in peatland open-water pools
Spatial patterns of organic matter content in the surface soil of the salt marshes of the Venice Lagoon (Italy)
Assessing root-soil interactions in wetland plants: root exudation and radial oxygen loss
Sorption of colored vs. noncolored organic matter by tidal marsh soils
Technical Note: Comparison of radiometric techniques for estimating recent organic carbon sequestration rates in freshwater mineral soil wetlands
Peatland evaporation across hemispheres: contrasting controls and sensitivity to climate warming driven by plant functional types
Driving and limiting factors of CH4 and CO2 emissions from coastal brackish-water wetlands in temperate regions
Reviews and syntheses: Greenhouse gas emissions from drained organic forest soils – synthesizing data for site-specific emission factors for boreal and cool temperate regions
Reviews and syntheses: Understanding the impacts of peatland catchment management on dissolved organic matter concentration and treatability
Plant mercury accumulation and litter input to a Northern Sedge-dominated Peatland
Warming accelerates belowground litter turnover in salt marshes – insights from a Tea Bag Index study
Sedimentary blue carbon dynamics based on chronosequential observations in a tropical restored mangrove forest
Duration of extraction determines CO2 and CH4 emissions from an actively extracted peatland in eastern Quebec, Canada
Nutrient release and flux dynamics of CO2, CH4, and N2O in a coastal peatland driven by actively induced rewetting with brackish water from the Baltic Sea
Quantification of blue carbon in salt marshes of the Pacific coast of Canada
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Dissolved organic matter concentration and composition discontinuity at the peat–pool interface in a boreal peatland
Effects of brackish water inflow on methane-cycling microbial communities in a freshwater rewetted coastal fen
High peatland methane emissions following permafrost thaw: enhanced acetoclastic methanogenesis during early successional stages
Origin, transport, and retention of fluvial sedimentary organic matter in South Africa's largest freshwater wetland, Mkhuze Wetland System
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Mangrove sediment organic carbon storage and sources in relation to forest age and position along a deltaic salinity gradient
Plant genotype controls wetland soil microbial functioning in response to sea-level rise
Soil greenhouse gas fluxes from tropical coastal wetlands and alternative agricultural land uses
Carbon balance of a Finnish bog: temporal variability and limiting factors based on 6 years of eddy-covariance data
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Committed and projected future changes in global peatlands – continued transient model simulations since the Last Glacial Maximum
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Interacting effects of vegetation components and water level on methane dynamics in a boreal fen
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Multi-year effect of wetting on CH4 flux at taiga–tundra boundary in northeastern Siberia deduced from stable isotope ratios of CH4
Zero to moderate methane emissions in a densely rooted, pristine Patagonian bog – biogeochemical controls as revealed from isotopic evidence
Katharina Jentzsch, Elisa Männistö, Maija E. Marushchak, Aino Korrensalo, Lona van Delden, Eeva-Stiina Tuittila, Christian Knoblauch, and Claire C. Treat
Biogeosciences, 21, 3761–3788, https://doi.org/10.5194/bg-21-3761-2024, https://doi.org/10.5194/bg-21-3761-2024, 2024
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During cold seasons, methane release from northern wetlands is important but often underestimated. We studied a boreal bog to understand methane emissions in spring and fall. At cold temperatures, methane release decreases due to lower production rates, but efficient methane transport through plant structures, decaying plants, and the release of methane stored in the pore water keep emissions ongoing. Understanding these seasonal processes can improve models for methane release in cold climates.
Julien Arsenault, Julie Talbot, Tim R. Moore, Klaus-Holger Knorr, Henning Teickner, and Jean-François Lapierre
Biogeosciences, 21, 3491–3507, https://doi.org/10.5194/bg-21-3491-2024, https://doi.org/10.5194/bg-21-3491-2024, 2024
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Peatlands are among the largest carbon (C) sinks on the planet. However, peatland features such as open-water pools emit more C than they accumulate because of higher decomposition than production. With this study, we show that the rates of decomposition vary among pools and are mostly driven by the environmental conditions in pools rather than by the nature of the material being decomposed. This means that changes in pool number or size may modify the capacity of peatlands to accumulate C.
Alice Puppin, Davide Tognin, Massimiliano Ghinassi, Erica Franceschinis, Nicola Realdon, Marco Marani, and Andrea D'Alpaos
Biogeosciences, 21, 2937–2954, https://doi.org/10.5194/bg-21-2937-2024, https://doi.org/10.5194/bg-21-2937-2024, 2024
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This study aims at inspecting organic matter dynamics affecting the survival and carbon sink potential of salt marshes, which are valuable yet endangered wetland environments. Measuring the organic matter content in marsh soils and its relationship with environmental variables, we observed that the organic matter accumulation varies at different scales, and it is driven by the interplay between sediment supply and vegetation, which are affected, in turn, by marine and fluvial influences.
Katherine Ann Haviland and Genevieve Noyce
EGUsphere, https://doi.org/10.5194/egusphere-2024-1547, https://doi.org/10.5194/egusphere-2024-1547, 2024
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Plant roots release both oxygen and carbon to the surrounding soil. While oxygen leads to less production of methane (a greenhouse gas), carbon often has the opposite effect. We investigated these processes in two plant species, Spartina patens and S. americanus. We found that S. patens produces more carbon, and less oxygen, than S. americanus. Additionally, the S. patens pool of root-associated carbon compounds was more dominated by compound types known to lead to higher methane production.
Patrick J. Neale, J. Patrick Megonigal, Maria Tzortziou, Elizabeth A. Canuel, Christina R. Pondell, and Hannah Morrissette
Biogeosciences, 21, 2599–2620, https://doi.org/10.5194/bg-21-2599-2024, https://doi.org/10.5194/bg-21-2599-2024, 2024
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Adsorption/desorption incubations were conducted with tidal marsh soils to understand the differential sorption behavior of colored vs. noncolored dissolved organic carbon. The wetland soils varied in organic content, and a range of salinities of fresh to 35 was used. Soils primarily adsorbed colored organic carbon and desorbed noncolored organic carbon. Sorption capacity increased with salinity, implying that salinity variations may shift composition of dissolved carbon in tidal marsh waters.
Purbasha Mistry, Irena F. Creed, Charles G. Trick, Eric Enanga, and David A. Lobb
EGUsphere, https://doi.org/10.5194/egusphere-2024-1162, https://doi.org/10.5194/egusphere-2024-1162, 2024
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Precise and accurate estimates of wetland organic carbon sequestration rates are crucial to track progress of climate action goals through effective carbon budgeting. Radioisotope dating methods using cesium-137 (137Cs) and lead-210 (210Pb) are needed to provide temporal references for these estimations. The choice between using 137Cs or 210Pb, or their combination, depends on respective study objectives, with careful consideration of factors such as dating range and estimation complexity.
Leeza Speranskaya, David I. Campbell, Peter M. Lafleur, and Elyn R. Humphreys
Biogeosciences, 21, 1173–1190, https://doi.org/10.5194/bg-21-1173-2024, https://doi.org/10.5194/bg-21-1173-2024, 2024
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Higher evaporation has been predicted in peatlands due to climatic drying. We determined whether the water-conservative vegetation at a Southern Hemisphere bog could cause a different response to dryness compared to a "typical" Northern Hemisphere bog, using decades-long evaporation datasets from each site. At the southern bog, evaporation increased at a much lower rate with increasing dryness, suggesting that this peatland type may be more resilient to climate warming than northern bogs.
Emilia Chiapponi, Sonia Silvestri, Denis Zannoni, Marco Antonellini, and Beatrice M. S. Giambastiani
Biogeosciences, 21, 73–91, https://doi.org/10.5194/bg-21-73-2024, https://doi.org/10.5194/bg-21-73-2024, 2024
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Coastal wetlands are important for their ability to store carbon, but they also emit methane, a potent greenhouse gas. This study conducted in four wetlands in Ravenna, Italy, aims at understanding how environmental factors affect greenhouse gas emissions. Temperature and irradiance increased emissions from water and soil, while water column depth and salinity limited them. Understanding environmental factors is crucial for mitigating climate change in wetland ecosystems.
Jyrki Jauhiainen, Juha Heikkinen, Nicholas Clarke, Hongxing He, Lise Dalsgaard, Kari Minkkinen, Paavo Ojanen, Lars Vesterdal, Jukka Alm, Aldis Butlers, Ingeborg Callesen, Sabine Jordan, Annalea Lohila, Ülo Mander, Hlynur Óskarsson, Bjarni D. Sigurdsson, Gunnhild Søgaard, Kaido Soosaar, Åsa Kasimir, Brynhildur Bjarnadottir, Andis Lazdins, and Raija Laiho
Biogeosciences, 20, 4819–4839, https://doi.org/10.5194/bg-20-4819-2023, https://doi.org/10.5194/bg-20-4819-2023, 2023
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The study looked at published data on drained organic forest soils in boreal and temperate zones to revisit current Tier 1 default emission factors (EFs) provided by the IPCC Wetlands Supplement. We examined the possibilities of forming more site-type specific EFs and inspected the potential relevance of environmental variables for predicting annual soil greenhouse gas balances by statistical models. The results have important implications for EF revisions and national emission reporting.
Jennifer Williamson, Chris Evans, Bryan Spears, Amy Pickard, Pippa J. Chapman, Heidrun Feuchtmayr, Fraser Leith, Susan Waldron, and Don Monteith
Biogeosciences, 20, 3751–3766, https://doi.org/10.5194/bg-20-3751-2023, https://doi.org/10.5194/bg-20-3751-2023, 2023
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Managing drinking water catchments to minimise water colour could reduce costs for water companies and save their customers money. Brown-coloured water comes from peat soils, primarily around upland reservoirs. Management practices, including blocking drains, removing conifers, restoring peatland plants and reducing burning, have been used to try and reduce water colour. This work brings together published evidence of the effectiveness of these practices to aid water industry decision-making.
Ting Sun and Brian A. Branfireun
Biogeosciences, 20, 2971–2984, https://doi.org/10.5194/bg-20-2971-2023, https://doi.org/10.5194/bg-20-2971-2023, 2023
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Shrub leaves had higher mercury concentrations than sedge leaves in the sedge-dominated peatland. Dead shrub leaves leached less soluble mercury but more bioaccessible dissolved organic matter than dead sedge leaves. Leached mercury was positively related to the aromaticity of dissolved organic matter in leachate. Future plant species composition changes under climate change will affect Hg input from plant leaves to northern peatlands.
Hao Tang, Stefanie Nolte, Kai Jensen, Roy Rich, Julian Mittmann-Goetsch, and Peter Mueller
Biogeosciences, 20, 1925–1935, https://doi.org/10.5194/bg-20-1925-2023, https://doi.org/10.5194/bg-20-1925-2023, 2023
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In order to gain the first mechanistic insight into warming effects and litter breakdown dynamics across whole-soil profiles, we used a unique field warming experiment and standardized plant litter to investigate the degree to which rising soil temperatures can accelerate belowground litter breakdown in coastal wetland ecosystems. We found warming strongly increases the initial rate of labile litter decomposition but has less consistent effects on the stabilization of this material.
Raghab Ray, Rempei Suwa, Toshihiro Miyajima, Jeffrey Munar, Masaya Yoshikai, Maria Lourdes San Diego-McGlone, and Kazuo Nadaoka
Biogeosciences, 20, 911–928, https://doi.org/10.5194/bg-20-911-2023, https://doi.org/10.5194/bg-20-911-2023, 2023
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Mangroves are blue carbon ecosystems known to store large amounts of organic carbon in the sediments. This study is a first attempt to apply a chronosequence (or space-for-time substitution) approach to evaluate the distribution and accumulation rate of carbon in a 30-year-old (maximum age) restored mangrove forest. Using this approach, the contribution of restored or planted mangroves to sedimentary organic carbon presents an increasing pattern with mangrove age.
Laura Clark, Ian B. Strachan, Maria Strack, Nigel T. Roulet, Klaus-Holger Knorr, and Henning Teickner
Biogeosciences, 20, 737–751, https://doi.org/10.5194/bg-20-737-2023, https://doi.org/10.5194/bg-20-737-2023, 2023
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We determine the effect that duration of extraction has on CO2 and CH4 emissions from an actively extracted peatland. Peat fields had high net C emissions in the first years after opening, and these then declined to half the initial value for several decades. Findings contribute to knowledge on the atmospheric burden that results from these activities and are of use to industry in their life cycle reporting and government agencies responsible for greenhouse gas accounting and policy.
Daniel L. Pönisch, Anne Breznikar, Cordula N. Gutekunst, Gerald Jurasinski, Maren Voss, and Gregor Rehder
Biogeosciences, 20, 295–323, https://doi.org/10.5194/bg-20-295-2023, https://doi.org/10.5194/bg-20-295-2023, 2023
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Peatland rewetting is known to reduce dissolved nutrients and greenhouse gases; however, short-term nutrient leaching and high CH4 emissions shortly after rewetting are likely to occur. We investigated the rewetting of a coastal peatland with brackish water and its effects on nutrient release and greenhouse gas fluxes. Nutrient concentrations were higher in the peatland than in the adjacent bay, leading to an export. CH4 emissions did not increase, which is in contrast to freshwater rewetting.
Stephen G. Chastain, Karen E. Kohfeld, Marlow G. Pellatt, Carolina Olid, and Maija Gailis
Biogeosciences, 19, 5751–5777, https://doi.org/10.5194/bg-19-5751-2022, https://doi.org/10.5194/bg-19-5751-2022, 2022
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Salt marshes are thought to be important carbon sinks because of their ability to store carbon in their soils. We provide the first estimates of how much blue carbon is stored in salt marshes on the Pacific coast of Canada. We find that the carbon stored in the marshes is low compared to other marshes around the world, likely because of their young age. Still, the high marshes take up carbon at rates faster than the global average, making them potentially important carbon sinks in the future.
Jim Boonman, Mariet M. Hefting, Corine J. A. van Huissteden, Merit van den Berg, Jacobus (Ko) van Huissteden, Gilles Erkens, Roel Melman, and Ype van der Velde
Biogeosciences, 19, 5707–5727, https://doi.org/10.5194/bg-19-5707-2022, https://doi.org/10.5194/bg-19-5707-2022, 2022
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Draining peat causes high CO2 emissions, and rewetting could potentially help solve this problem. In the dry year 2020 we measured that subsurface irrigation reduced CO2 emissions by 28 % and 83 % on two research sites. We modelled a peat parcel and found that the reduction depends on seepage and weather conditions and increases when using pressurized irrigation or maintaining high ditchwater levels. We found that soil temperature and moisture are suitable as indicators of peat CO2 emissions.
Maiju Linkosalmi, Juha-Pekka Tuovinen, Olli Nevalainen, Mikko Peltoniemi, Cemal M. Taniş, Ali N. Arslan, Juuso Rainne, Annalea Lohila, Tuomas Laurila, and Mika Aurela
Biogeosciences, 19, 4747–4765, https://doi.org/10.5194/bg-19-4747-2022, https://doi.org/10.5194/bg-19-4747-2022, 2022
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Vegetation greenness was monitored with digital cameras in three northern peatlands during five growing seasons. The greenness index derived from the images was highest at the most nutrient-rich site. Greenness indicated the main phases of phenology and correlated with CO2 uptake, though this was mainly related to the common seasonal cycle. The cameras and Sentinel-2 satellite showed consistent results, but more frequent satellite data are needed for reliable detection of phenological phases.
Antonin Prijac, Laure Gandois, Laurent Jeanneau, Pierre Taillardat, and Michelle Garneau
Biogeosciences, 19, 4571–4588, https://doi.org/10.5194/bg-19-4571-2022, https://doi.org/10.5194/bg-19-4571-2022, 2022
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Pools are common features of peatlands. We documented dissolved organic matter (DOM) composition in pools and peat of an ombrotrophic boreal peatland to understand its origin and potential role in the peatland carbon budget. The survey reveals that DOM composition differs between pools and peat, although it is derived from the peat vegetation. We investigated which processes are involved and estimated that the contribution of carbon emissions from DOM processing in pools could be substantial.
Cordula Nina Gutekunst, Susanne Liebner, Anna-Kathrina Jenner, Klaus-Holger Knorr, Viktoria Unger, Franziska Koebsch, Erwin Don Racasa, Sizhong Yang, Michael Ernst Böttcher, Manon Janssen, Jens Kallmeyer, Denise Otto, Iris Schmiedinger, Lucas Winski, and Gerald Jurasinski
Biogeosciences, 19, 3625–3648, https://doi.org/10.5194/bg-19-3625-2022, https://doi.org/10.5194/bg-19-3625-2022, 2022
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Methane emissions decreased after a seawater inflow and a preceding drought in freshwater rewetted coastal peatland. However, our microbial and greenhouse gas measurements did not indicate that methane consumers increased. Rather, methane producers co-existed in high numbers with their usual competitors, the sulfate-cycling bacteria. We studied the peat soil and aimed to cover the soil–atmosphere continuum to better understand the sources of methane production and consumption.
Liam Heffernan, Maria A. Cavaco, Maya P. Bhatia, Cristian Estop-Aragonés, Klaus-Holger Knorr, and David Olefeldt
Biogeosciences, 19, 3051–3071, https://doi.org/10.5194/bg-19-3051-2022, https://doi.org/10.5194/bg-19-3051-2022, 2022
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Permafrost thaw in peatlands leads to waterlogged conditions, a favourable environment for microbes producing methane (CH4) and high CH4 emissions. High CH4 emissions in the initial decades following thaw are due to a vegetation community that produces suitable organic matter to fuel CH4-producing microbes, along with warm and wet conditions. High CH4 emissions after thaw persist for up to 100 years, after which environmental conditions are less favourable for microbes and high CH4 emissions.
Julia Gensel, Marc Steven Humphries, Matthias Zabel, David Sebag, Annette Hahn, and Enno Schefuß
Biogeosciences, 19, 2881–2902, https://doi.org/10.5194/bg-19-2881-2022, https://doi.org/10.5194/bg-19-2881-2022, 2022
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We investigated organic matter (OM) and plant-wax-derived biomarkers in sediments and plants along the Mkhuze River to constrain OM's origin and transport pathways within South Africa's largest freshwater wetland. Presently, it efficiently captures OM, so neither transport from upstream areas nor export from the swamp occurs. Thus, we emphasize that such geomorphological features can alter OM provenance, questioning the assumption of watershed-integrated information in downstream sediments.
Petri Kiuru, Marjo Palviainen, Tiia Grönholm, Maarit Raivonen, Lukas Kohl, Vincent Gauci, Iñaki Urzainki, and Annamari Laurén
Biogeosciences, 19, 1959–1977, https://doi.org/10.5194/bg-19-1959-2022, https://doi.org/10.5194/bg-19-1959-2022, 2022
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Peatlands are large sources of methane (CH4), and peat structure controls CH4 production and emissions. We used X-ray microtomography imaging, complex network theory methods, and pore network modeling to describe the properties of peat macropore networks and the role of macropores in CH4-related processes. We show that conditions for gas transport and CH4 production vary with depth and are affected by hysteresis, which may explain the hotspots and episodic spikes in peatland CH4 emissions.
Rey Harvey Suello, Simon Lucas Hernandez, Steven Bouillon, Jean-Philippe Belliard, Luis Dominguez-Granda, Marijn Van de Broek, Andrea Mishell Rosado Moncayo, John Ramos Veliz, Karem Pollette Ramirez, Gerard Govers, and Stijn Temmerman
Biogeosciences, 19, 1571–1585, https://doi.org/10.5194/bg-19-1571-2022, https://doi.org/10.5194/bg-19-1571-2022, 2022
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This research shows indications that the age of the mangrove forest and its position along a deltaic gradient (upstream–downstream) play a vital role in the amount and sources of carbon stored in the mangrove sediments. Our findings also imply that carbon capture by the mangrove ecosystem itself contributes partly but relatively little to long-term sediment organic carbon storage. This finding is particularly relevant for budgeting the potential of mangrove ecosystems to mitigate climate change.
Hao Tang, Susanne Liebner, Svenja Reents, Stefanie Nolte, Kai Jensen, Fabian Horn, and Peter Mueller
Biogeosciences, 18, 6133–6146, https://doi.org/10.5194/bg-18-6133-2021, https://doi.org/10.5194/bg-18-6133-2021, 2021
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We examined if sea-level rise and plant genotype interact to affect soil microbial functioning in a mesocosm experiment using two genotypes of a dominant salt-marsh grass characterized by differences in flooding sensitivity. Larger variability in microbial community structure, enzyme activity, and litter breakdown in soils with the more sensitive genotype supports our hypothesis that effects of climate change on soil microbial functioning can be controlled by plant intraspecific adaptations.
Naima Iram, Emad Kavehei, Damien T. Maher, Stuart E. Bunn, Mehran Rezaei Rashti, Bahareh Shahrabi Farahani, and Maria Fernanda Adame
Biogeosciences, 18, 5085–5096, https://doi.org/10.5194/bg-18-5085-2021, https://doi.org/10.5194/bg-18-5085-2021, 2021
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Greenhouse gas emissions were measured and compared from natural coastal wetlands and their converted agricultural lands across annual seasonal cycles in tropical Australia. Ponded pastures emitted ~ 200-fold-higher methane than any other tested land use type, suggesting the highest greenhouse gas mitigation potential and financial incentives by the restoration of ponded pastures to natural coastal wetlands.
Pavel Alekseychik, Aino Korrensalo, Ivan Mammarella, Samuli Launiainen, Eeva-Stiina Tuittila, Ilkka Korpela, and Timo Vesala
Biogeosciences, 18, 4681–4704, https://doi.org/10.5194/bg-18-4681-2021, https://doi.org/10.5194/bg-18-4681-2021, 2021
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Bogs of northern Eurasia represent a major type of peatland ecosystem and contain vast amounts of carbon, but carbon balance monitoring studies on bogs are scarce. The current project explores 6 years of carbon balance data obtained using the state-of-the-art eddy-covariance technique at a Finnish bog Siikaneva. The results reveal relatively low interannual variability indicative of ecosystem resilience to both cool and hot summers and provide new insights into the seasonal course of C fluxes.
Timea Katona, Benjamin Silas Gilfedder, Sven Frei, Matthias Bücker, and Adrian Flores-Orozco
Biogeosciences, 18, 4039–4058, https://doi.org/10.5194/bg-18-4039-2021, https://doi.org/10.5194/bg-18-4039-2021, 2021
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We used electrical geophysical methods to map variations in the rates of microbial activity within a wetland. Our results show that the highest electrical conductive and capacitive properties relate to the highest concentrations of phosphates, carbon, and iron; thus, we can use them to characterize the geometry of the biogeochemically active areas or hotspots.
Jurek Müller and Fortunat Joos
Biogeosciences, 18, 3657–3687, https://doi.org/10.5194/bg-18-3657-2021, https://doi.org/10.5194/bg-18-3657-2021, 2021
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We present long-term projections of global peatland area and carbon with a continuous transient history since the Last Glacial Maximum. Our novel results show that large parts of today’s northern peatlands are at risk from past and future climate change, with larger emissions clearly connected to larger risks. The study includes comparisons between different emission and land-use scenarios, driver attribution through factorial simulations, and assessments of uncertainty from climate forcing.
Lianlian Zhu, Zhengmiao Deng, Yonghong Xie, Xu Li, Feng Li, Xinsheng Chen, Yeai Zou, Chengyi Zhang, and Wei Wang
Biogeosciences, 18, 1–11, https://doi.org/10.5194/bg-18-1-2021, https://doi.org/10.5194/bg-18-1-2021, 2021
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We conducted a Carex brevicuspis leaf litter input experiment to clarify the intrinsic factors controlling litter decomposition and quantify its contribution to the soil organic carbon pool at different water levels. Our results revealed that the water level in natural wetlands influenced litter decomposition mainly by leaching and microbial activity, by extension, and affected the wetland surface carbon pool.
Robert J. Parker, Chris Wilson, A. Anthony Bloom, Edward Comyn-Platt, Garry Hayman, Joe McNorton, Hartmut Boesch, and Martyn P. Chipperfield
Biogeosciences, 17, 5669–5691, https://doi.org/10.5194/bg-17-5669-2020, https://doi.org/10.5194/bg-17-5669-2020, 2020
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Wetlands contribute the largest uncertainty to the atmospheric methane budget. WetCHARTs is a simple, data-driven model that estimates wetland emissions using observations of precipitation and temperature. We perform the first detailed evaluation of WetCHARTs against satellite data and find it performs well in reproducing the observed wetland methane seasonal cycle for the majority of wetland regions. In regions where it performs poorly, we highlight incorrect wetland extent as a key reason.
Jurek Müller and Fortunat Joos
Biogeosciences, 17, 5285–5308, https://doi.org/10.5194/bg-17-5285-2020, https://doi.org/10.5194/bg-17-5285-2020, 2020
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We present an in-depth model analysis of transient peatland area and carbon dynamics over the last 22 000 years. Our novel results show that the consideration of both gross positive and negative area changes are necessary to understand the transient evolution of peatlands and their net effect on atmospheric carbon. The study includes the attributions to drivers through factorial simulations, assessments of uncertainty from climate forcing, and determination of the global net carbon balance.
Lilli Zeh, Marie Theresa Igel, Judith Schellekens, Juul Limpens, Luca Bragazza, and Karsten Kalbitz
Biogeosciences, 17, 4797–4813, https://doi.org/10.5194/bg-17-4797-2020, https://doi.org/10.5194/bg-17-4797-2020, 2020
Jérémy Guilhen, Ahmad Al Bitar, Sabine Sauvage, Marie Parrens, Jean-Michel Martinez, Gwenael Abril, Patricia Moreira-Turcq, and José-Miguel Sánchez-Pérez
Biogeosciences, 17, 4297–4311, https://doi.org/10.5194/bg-17-4297-2020, https://doi.org/10.5194/bg-17-4297-2020, 2020
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The quantity of greenhouse gases (GHGs) released to the atmosphere by human industries and agriculture, such as carbon dioxide (CO2) and nitrous oxide (N2O), has been constantly increasing for the last few decades.
This work develops a methodology which makes consistent both satellite observations and modelling of the Amazon basin to identify and quantify the role of wetlands in GHG emissions. We showed that these areas produce non-negligible emissions and are linked to land use.
David Holl, Eva-Maria Pfeiffer, and Lars Kutzbach
Biogeosciences, 17, 2853–2874, https://doi.org/10.5194/bg-17-2853-2020, https://doi.org/10.5194/bg-17-2853-2020, 2020
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We measured greenhouse gas (GHG) fluxes at a bog site in northwestern Germany that has been heavily degraded by peat mining. During the 2-year investigation period, half of the area was still being mined, whereas the remaining half had been rewetted shortly before. We could therefore estimate the impact of rewetting on GHG flux dynamics. Rewetting had a considerable effect on the annual GHG balance and led to increased (up to 84 %) methane and decreased (up to 40 %) carbon dioxide release.
Jacob S. Diamond, Daniel L. McLaughlin, Robert A. Slesak, and Atticus Stovall
Biogeosciences, 17, 901–915, https://doi.org/10.5194/bg-17-901-2020, https://doi.org/10.5194/bg-17-901-2020, 2020
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Many wetland systems exhibit lumpy, or uneven, soil surfaces where higher points are called hummocks and lower points are called hollows. We found that, while hummocks extended only ~ 20 cm above hollow surfaces, they exhibited distinct plant communities, plant growth, and soil properties. Differences between hummocks and hollows were the greatest in wetter sites, supporting the hypothesis that plants create and maintain their own hummocks in response to saturated soil conditions.
Terhi Riutta, Aino Korrensalo, Anna M. Laine, Jukka Laine, and Eeva-Stiina Tuittila
Biogeosciences, 17, 727–740, https://doi.org/10.5194/bg-17-727-2020, https://doi.org/10.5194/bg-17-727-2020, 2020
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We studied the role of plant species groups in peatland methane fluxes under natural conditions and lowered water level. At a natural water level, sedges and mosses increased the fluxes. At a lower water level, the impact of plant groups on the fluxes was small. Only at a high water level did vegetation regulate the fluxes. The results are relevant for assessing peatland methane fluxes in a changing climate, as peatland water level and vegetation are predicted to change.
M. Graham Clark, Elyn R. Humphreys, and Sean K. Carey
Biogeosciences, 17, 667–682, https://doi.org/10.5194/bg-17-667-2020, https://doi.org/10.5194/bg-17-667-2020, 2020
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Natural and restored wetlands typically emit methane to the atmosphere. However, we found that a wetland constructed after oil sand mining in boreal Canada using organic soils from local peatlands had negligible emissions of methane in its first 3 years. Methane production was likely suppressed due to an abundance of alternate inorganic electron acceptors. Methane emissions may increase in the future if the alternate electron acceptors continue to decrease.
Hendrik Reuter, Julia Gensel, Marcus Elvert, and Dominik Zak
Biogeosciences, 17, 499–514, https://doi.org/10.5194/bg-17-499-2020, https://doi.org/10.5194/bg-17-499-2020, 2020
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Using infrared spectroscopy, we developed a routine to disentangle microbial nitrogen (N) and plant N in decomposed litter. In a decomposition experiment in three wetland soils, this routine revealed preferential protein depolymerization as a decomposition-site-dependent parameter, unaffected by variations in initial litter N content. In Sphagnum peat, preferential protein depolymerization led to a N depletion of still-unprocessed litter tissue, i.e., a gradual loss of litter quality.
Kevan J. Minick, Bhaskar Mitra, Asko Noormets, and John S. King
Biogeosciences, 16, 4671–4686, https://doi.org/10.5194/bg-16-4671-2019, https://doi.org/10.5194/bg-16-4671-2019, 2019
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Sea level rise alters hydrology and vegetation in coastal wetlands. We studied effects of freshwater, saltwater, and wood on soil microbial activity in a freshwater forested wetland. Saltwater reduced CO2/CH4 production compared to freshwater, suggesting large changes in greenhouse gas production and microbial activity are possible due to saltwater intrusion into freshwater wetlands but that the availability of C in the form of dead wood (as forests transition to marsh) may alter the magnitude.
Jyrki Jauhiainen, Jukka Alm, Brynhildur Bjarnadottir, Ingeborg Callesen, Jesper R. Christiansen, Nicholas Clarke, Lise Dalsgaard, Hongxing He, Sabine Jordan, Vaiva Kazanavičiūtė, Leif Klemedtsson, Ari Lauren, Andis Lazdins, Aleksi Lehtonen, Annalea Lohila, Ainars Lupikis, Ülo Mander, Kari Minkkinen, Åsa Kasimir, Mats Olsson, Paavo Ojanen, Hlynur Óskarsson, Bjarni D. Sigurdsson, Gunnhild Søgaard, Kaido Soosaar, Lars Vesterdal, and Raija Laiho
Biogeosciences, 16, 4687–4703, https://doi.org/10.5194/bg-16-4687-2019, https://doi.org/10.5194/bg-16-4687-2019, 2019
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We collated peer-reviewed publications presenting GHG flux data for drained organic forest soils in boreal and temperate climate zones, focusing on data that have been used, or have the potential to be used, for estimating net annual soil GHG emission/removals. We evaluated the methods in data collection and identified major gaps in background/environmental data. Based on these, we developed suggestions for future GHG data collection to increase data applicability in syntheses and inventories.
Steffen Buessecker, Kaitlyn Tylor, Joshua Nye, Keith E. Holbert, Jose D. Urquiza Muñoz, Jennifer B. Glass, Hilairy E. Hartnett, and Hinsby Cadillo-Quiroz
Biogeosciences, 16, 4601–4612, https://doi.org/10.5194/bg-16-4601-2019, https://doi.org/10.5194/bg-16-4601-2019, 2019
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We investigated the potential for chemical reduction of nitrite into nitrous oxide (N2O) in soils from tropical peat. Among treatments, irradiation resulted in the lowest biological interference and least change of native soil chemistry (iron and organic matter). Nitrite depletion was as high in live or irradiated soils, and N2O production was significant in all tests. Thus, nonbiological production of N2O may be widely underestimated in wetlands and tropical peatlands.
Ward Swinnen, Nils Broothaerts, and Gert Verstraeten
Biogeosciences, 16, 3977–3996, https://doi.org/10.5194/bg-16-3977-2019, https://doi.org/10.5194/bg-16-3977-2019, 2019
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In this study, a new model is presented, which was specifically designed to study the development and carbon storage of blanket peatlands since the last ice age. In the past, two main processes (declining forest cover and rising temperatures) have been proposed as drivers of blanket peatland development on the British Isles. The simulations performed in this study support the temperature hypothesis for the blanket peatlands in the Cairngorms Mountains of central Scotland.
David Holl, Verónica Pancotto, Adrian Heger, Sergio Jose Camargo, and Lars Kutzbach
Biogeosciences, 16, 3397–3423, https://doi.org/10.5194/bg-16-3397-2019, https://doi.org/10.5194/bg-16-3397-2019, 2019
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We present 2 years of eddy covariance carbon dioxide flux data from two Southern Hemisphere peatlands on Tierra del Fuego. One of the investigated sites is a type of bog exclusive to the Southern Hemisphere, which is dominated by vascular, cushion-forming plants and is particularly understudied. One result of this study is that these cushion bogs apparently are highly productive in comparison to Northern and Southern Hemisphere moss-dominated bogs.
Liudmila S. Shirokova, Artem V. Chupakov, Svetlana A. Zabelina, Natalia V. Neverova, Dahedrey Payandi-Rolland, Carole Causserand, Jan Karlsson, and Oleg S. Pokrovsky
Biogeosciences, 16, 2511–2526, https://doi.org/10.5194/bg-16-2511-2019, https://doi.org/10.5194/bg-16-2511-2019, 2019
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Regardless of the size and landscape context of surface water in frozen peatland in NE Europe, the bio- and photo-degradability of dissolved organic matter (DOM) over a 1-month incubation across a range of temperatures was below 10 %. We challenge the paradigm of dominance of photolysis and biodegradation in DOM processing in surface waters from frozen peatland, and we hypothesize peat pore-water DOM degradation and respiration of sediments to be the main drivers of CO2 emission in this region.
Elisa Männistö, Aino Korrensalo, Pavel Alekseychik, Ivan Mammarella, Olli Peltola, Timo Vesala, and Eeva-Stiina Tuittila
Biogeosciences, 16, 2409–2421, https://doi.org/10.5194/bg-16-2409-2019, https://doi.org/10.5194/bg-16-2409-2019, 2019
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We studied methane emitted as episodic bubble release (ebullition) from water and bare peat surfaces of a boreal bog over three years. There was more ebullition from water than from bare peat surfaces, and it was controlled by peat temperature, water level, atmospheric pressure and the weekly temperature sum. However, the contribution of methane bubbles to the total ecosystem methane emission was small. This new information can be used to improve process models of peatland methane dynamics.
Franziska Koebsch, Matthias Winkel, Susanne Liebner, Bo Liu, Julia Westphal, Iris Schmiedinger, Alejandro Spitzy, Matthias Gehre, Gerald Jurasinski, Stefan Köhler, Viktoria Unger, Marian Koch, Torsten Sachs, and Michael E. Böttcher
Biogeosciences, 16, 1937–1953, https://doi.org/10.5194/bg-16-1937-2019, https://doi.org/10.5194/bg-16-1937-2019, 2019
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In natural coastal wetlands, high supplies of marine sulfate suppress methane production. We found these natural methane suppression mechanisms to be suspended by humane interference in a brackish wetland. Here, diking and freshwater rewetting had caused an efficient depletion of the sulfate reservoir and opened up favorable conditions for an intensive methane production. Our results demonstrate how human disturbance can turn coastal wetlands into distinct sources of the greenhouse gas methane.
Luke C. Jeffrey, Damien T. Maher, Scott G. Johnston, Kylie Maguire, Andrew D. L. Steven, and Douglas R. Tait
Biogeosciences, 16, 1799–1815, https://doi.org/10.5194/bg-16-1799-2019, https://doi.org/10.5194/bg-16-1799-2019, 2019
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Wetlands represent the largest natural source of methane (CH4), so understanding CH4 drivers is important for management and climate models. We compared several CH4 pathways of a remediated subtropical Australian wetland. We found permanently inundated sites emitted more CH4 than seasonally inundated sites and that the soil properties of each site corresponded to CH4 emissions. This suggests that selective wetland remediation of favourable soil types may help to mitigate unwanted CH4 emissions.
Ryo Shingubara, Atsuko Sugimoto, Jun Murase, Go Iwahana, Shunsuke Tei, Maochang Liang, Shinya Takano, Tomoki Morozumi, and Trofim C. Maximov
Biogeosciences, 16, 755–768, https://doi.org/10.5194/bg-16-755-2019, https://doi.org/10.5194/bg-16-755-2019, 2019
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(1) Wetting event with extreme precipitation increased methane emission from wetland, especially two summers later, despite the decline in water level after the wetting. (2) Isotopic compositions of methane in soil pore water suggested enhancement of production and less significance of oxidation in the following two summers after the wetting event. (3) Duration of water saturation in the active layer may be important for predicting methane emission after a wetting event in permafrost ecosystems.
Wiebke Münchberger, Klaus-Holger Knorr, Christian Blodau, Verónica A. Pancotto, and Till Kleinebecker
Biogeosciences, 16, 541–559, https://doi.org/10.5194/bg-16-541-2019, https://doi.org/10.5194/bg-16-541-2019, 2019
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Processes governing CH4 dynamics have been scarcely studied in southern hemispheric bogs. These can be dominated by cushion-forming plants with deep and dense roots suppressing emissions. Here we demonstrate how the spatial distribution of root activity drives a pronounced pattern of CH4 emissions, likewise also possible in densely rooted northern bogs. We conclude that presence of cushion vegetation as a proxy for negligible CH4 emissions from cushion bogs needs to be interpreted with caution.
Cited articles
Austnes, E.: Effects of storm events on mobilisation of dissolved organic
matter (DOM) in a Welsh peatland catchment, Biogeochemistry, 99,
157–173, https://doi.org/10.1007/s10533-009-9399-4, 2010.
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.
Bernard-Jannin, L., Binet, S., Gogo, S., Leroy, F., Défarge, C., Jozja, N., Zocatelli, R., Perdereau, L., and Laggoun-Défarge, F.: Hydrological control of dissolved organic carbon dynamics in a rehabilitated Sphagnum-dominated peatland: a water-table based modelling approach, Hydrol. Earth Syst. Sci., 22, 4907–4920, https://doi.org/10.5194/hess-22-4907-2018, 2018.
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., 111, G02010, https://doi.org/10.1029/2005JG000065, 2006.
Binet, S., Gogo, S., and Laggoun-Défarge, F.: A water-table dependent
reservoir model to investigate the effect of drought and vascular plant
invasion on peatland hydrology, J. Hydrol., 499, 132–139,
https://doi.org/10.1016/j.jhydrol.2013.06.035, 2013.
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.
Blaen, P. J., Khamis, K., Lloyd, C., Comer-Warner, S., Ciocca, F., Thomas,
R. M., MacKenzie, A. R., and Krause, S.: High-frequency monitoring of
catchment nutrient exports reveals highly variable storm event responses and
dynamic source zone activation, J. Geophys. Res.-Biogeo., 122, 2265–2281, https://doi.org/10.1002/2017JG003904, 2017.
Blodau, C., Basiliko, N., and Moore, T. R.: Carbon turnover in peatland
mesocosms exposed to different water table levels, Biogeochemistry, 67,
331–351, https://doi.org/10.1023/B:BIOG.0000015788.30164.e2, 2004.
Boyer, E. W., Hornberger, G. M., Bencala, K. E., and McKnight, D. M.: Response characteristics of DOC flushing in an alpine catchment.
Hydrological Process., 11, 1635–1647, 1997.
Broder, T. and Biester, H.: Hydrologic controls on DOC, As and Pb export from a polluted peatland – the importance of heavy rain events, antecedent moisture conditions and hydrological connectivity, Biogeosciences, 12, 4651–4664, https://doi.org/10.5194/bg-12-4651-2015, 2015.
Broder, T. and Biester, H.: Linking major and trace element concentrations
in a headwater stream to DOC release and hydrologic conditions in a bog and
peaty riparian zone, Appl. Geochem., 87, 188–201,
https://doi.org/10.1016/j.apgeochem.2017.11.003, 2017.
Broder, T., Blodau, C., Biester, H., and Knorr, K. H.: Peat decomposition records in three pristine ombrotrophic bogs in southern Patagonia, Biogeosciences, 9, 1479–1491, https://doi.org/10.5194/bg-9-1479-2012, 2012.
Brown, L. E., Holden, J., Palmer, S. M., Johnston, K., Ramchunder, S. J., and
Grayson, R.: Effects of fire on the hydrology, biogeochemistry, and ecology
of peatland river systems, Freshw. Sci., 34, 1406–1425,
https://doi.org/10.1086/683426, 2015.
Chanton, J. P., Glaser, P. H., Chasar, L. S., Burdige, D. J., Hines, M. E.,
Siegel, D. I., Tremblay, L. B., and Cooper, W. T.: Radiocarbon evidence for
the importance of surface vegetation on fermentation and methanogenesis in
contrasting types of boreal peatlands, Global Biogeochem. Cy., 22, GB4022,
https://doi.org/10.1029/2008GB003274, 2008.
Chasar, L. S., Chanton, J. P., Glaser, P. H., Siegel, D. I., and Rivers, J.
S.: Radiocarbon and stable carbon isotopic evidence for transport and
transformation of dissolved organic carbon, dissolved inorganic carbon, and
CH4 in a northern Minnesota peatland, Global Biogeochem. Cy., 14,
1095–1108, https://doi.org/10.1029/1999GB001221, 2000.
Chevan, A. and Sutherland, M.: Hierarchical Partitioning, Am. Stat., 45,
90–96, https://doi.org/10.1080/00031305.1991.10475776, 1991.
Clark, J. M.: Enviromental Controls on the Production and Export of
Dissolved Organic Carbon in an Upland Peat Catchment, PhD thesis, University of Leeds, available at: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503248 (last access: 17 May 2019), 2005.
Clark, J. M., Chapman, P. J., Adamson, J. K., and Lane, S. N.: Influence of
drought-induced acidification on the mobility of dissolved organic carbon in
peat soils, Glob. Change Biol., 11, 791–809,
https://doi.org/10.1111/j.1365-2486.2005.00937.x, 2005.
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., Lane, S. N., Chapman, P. J., and Adamson, J. K.: Link between
DOC in near surface peat and stream water in an upland catchment, Sci. Total
Environ., 404, 308–315, https://doi.org/10.1016/j.scitotenv.2007.11.002, 2008.
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.
Cole, J. J., Prairie, Y. T., Caraco, N. F., McDowell, W. H., Tranvik, L. J.,
Striegl, R. G., Duarte, C. M., Kortelainen, P., Downing, J. A., Middelburg,
J. J., and Melack, J.: Plumbing the Global Carbon Cycle: Integrating Inland
Waters into the Terrestrial Carbon Budget, Ecosystems, 10, 172–185,
https://doi.org/10.1007/s10021-006-9013-8, 2007.
Dargie, G. C., Lewis, S. L., Lawson, I. T., Mitchard, E. T. A., Page, S. E.,
Bocko, Y. E., and Ifo, S. A.: Age, extent and carbon storage of the central
Congo Basin peatland complex, Nature, 542, 86–90,
https://doi.org/10.1038/nature21048, 2017.
Dawson, J. J. C., Tetzlaff, D., Speed, M., Hrachowitz, M., and Soulsby, C.:
Seasonal controls on DOC dynamics in nested upland catchments in NE
Scotland, Hydrol. Process., 25, 1647–1658, https://doi.org/10.1002/hyp.7925, 2011.
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.
Dinsmore, K. J., Billett, M. F., Skiba, U. M., Rees, R. M., Drewer, J., and
Helfter, C.: Role of the aquatic pathway in the carbon and greenhouse gas
budgets of a capeatland tchment, Glob. Change Biol., 16, 2750–2762,
https://doi.org/10.1111/j.1365-2486.2009.02119.x, 2010.
Dormann, C. F., Elith, J., Bacher, S., Buchmann, C., Carl, G., Carré,
G., Marquéz, J. R. G., Gruber, B., Lafourcade, B., Leitão, P. J.,
Münkemüller, T., McClean, C., Osborne, P. E., Reineking, B.,
Schröder, B., Skidmore, A. K., Zurell, D., and Lautenbach, S.:
Collinearity: a review of methods to deal with it and a simulation study
evaluating their performance, Ecography, 36, 27–46,
https://doi.org/10.1111/j.1600-0587.2012.07348.x, 2013.
Downing, B. D., Pellerin, B. A., Bergamaschi, B. A., Saraceno, J. F., and
Kraus, T. E. C.: Seeing the light: The effects of particles, dissolved
materials, and temperature on in situ measurements of DOM fluorescence in
rivers and streams, Limnol. Oceanogr.-Meth., 10, 767–775,
https://doi.org/10.4319/lom.2012.10.767, 2012.
Drake, T. W., Raymond, P. A. and Spencer, R. G. M.: Terrestrial carbon
inputs to inland waters: A current synthesis of estimates and uncertainty,
Limnol. Oceanogr., 3, 132–142, https://doi.org/10.1002/lol2.10055, 2017.
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.
Fenner, N. and Freeman, C.: Drought-induced carbon loss in peatlands, Nat.
Geosci., 4, 895–900, https://doi.org/10.1038/ngeo1323, 2011.
Fraser, C. J. D., Roulet, N. T., and Lafleur, M.: Groundwater flow patterns
in a large peatland, J. Hydrol., 246, 142–154,
https://doi.org/10.1016/S0022-1694(01)00362-6, 2001.
Freeman, C., Ostle, N., and Kang, H.: An enzymic “latch” on a global carbon
store, Nature, 409, 149–149, https://doi.org/10.1038/35051650, 2001.
Gascoin, S. and Fanise, P.: Bernadouze meteorological data, SEDOO OMP,
https://doi.org/10.6096/DV/UQITZ4, 2018.
Gascoin, S., Hagolle, O., Huc, M., Jarlan, L., Dejoux, J.-F., Szczypta, C., Marti, R., and Sánchez, R.: A snow cover climatology for the Pyrenees from MODIS snow products, Hydrol. Earth Syst. Sci., 19, 2337–2351, https://doi.org/10.5194/hess-19-2337-2015, 2015.
Gorham, E.: Northern Peatlands: Role in the Carbon Cycle and Probable
Responses to Climatic Warming, Ecol. Appl., 1, 182–195,
https://doi.org/10.2307/1941811, 1991.
Grayson, R. and Holden, J.: Continuous measurement of spectrophotometric
absorbance in peatland streamwater in northern England: implications for
understanding fluvial carbon fluxes, Hydrol. Process., 26, 27–39,
https://doi.org/10.1002/hyp.8106, 2012.
Groemping, U. and Matthias, L.: relaimpo: Relative Importance of Regressors
in Linear Models, available at: https://CRAN.R-project.org/package=relaimpo (last access: 22 May 2019), 2018.
Harell Jr., F. E.: rms: Regression Modeling Strategies. available at: https://CRAN.R-project.org/package=rms, last access: 22 May 2019.
Hendrickson, G. E. and Krieger, R. A.: Geochemistry of natural waters of the
Blue Grass region, Kentucky, US Government Printing Office, Washington, 1964.
Holdridge, L. R., Mason, F. B., and Hatheway, W. C.: Life zone ecology, San José, Tropical Science Center, San Jose, Costa Rica, 206 pp., 1967.
Höll, B. S., Fiedler, S., Jungkunst, H. F., Kalbitz, K., Freibauer, A.,
Drösler, M., and Stahr, K.: Characteristics of dissolved organic matter
following 20 years of peatland restoration, Sci. Total Environ., 408,
78–83, https://doi.org/10.1016/j.scitotenv.2009.08.046, 2009.
Hope, D., Billett, M. F., and Cresser, M. S.: A review of the export of
carbon in river water: fluxes and processes, Environ. Pollut., 84, 301–324, 1994.
Hope, D., Billett, M. F., and Cresser, M. S.: Exports of organic carbon in
two river systems in NE Scotland, J. Hydrol., 193, 61–82,
https://doi.org/10.1016/S0022-1694(96)03150-2, 1997.
Hope, D., Palmer, S. M., Billett, M. F., and Dawson, J. J. C.: Carbon dioxide
and methane evasion from a temperate peatland stream, Limnol. Oceanogr.,
46, 847–857, https://doi.org/10.4319/lo.2001.46.4.0847, 2001.
Hribljan, J. A., Kane, E. S., Pypker, T. G., and Chimner, R. A.: The effect
of long-term water table manipulations on dissolved organic carbon dynamics
in a poor fen peatland, J. Geophys. Res.-Biogeo., 119, 577–595,
https://doi.org/10.1002/2013JG002527, 2014.
Jager, D. F., Wilmking, M., and Kukkonen, J. V. K.: The influence of summer
seasonal extremes on dissolved organic carbon export from a boreal peatland
catchment: Evidence from one dry and one wet growing season, Sci. Total
Environ., 407, 1373–1382, https://doi.org/10.1016/j.scitotenv.2008.10.005, 2009.
Jalut, G., Delibrias, G., Dagnac, J., and Mardones, M.: A palaeoecological
approach to the last 21 000 years in the Pyrénées: the peat bog of
Freychinède (alt. 1350 m, Ariège, south France), Palaeogeogr.
Palaeocl., 40, 321–336, 1982.
Jeong, J.-J., Bartsch, S., Fleckenstein, J. H., Matzner, E., Tenhunen, J.
D., Lee, S. D., Park, S. K., and Park, J.-H.: Differential storm responses of
dissolved and particulate organic carbon in a mountainous headwater stream,
investigated by high-frequency, in situ optical measurements, J. Geophys.
Res., 117, G03013, https://doi.org/10.1029/2012JG001999, 2012.
Jones, E., Oliphant, T., and Peterson, P.: SciPy: Open Source Scientific
Tools for Python, available at: https://www.scipy.org/ (last access:
1 July 2019), 2001.
Joosten, H. and Clarke, D.: Wise use of mires and peatlands: background and
principles including a framework for decision-making, International Peat
Society and International Mire Conservation Group, Jyväskylä, Greifswald, 2002.
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 Sci., 165, 277–304, 2000.
Kalbitz, K., Rupp, H., and Meissner, R.: N-, P- and DOC-dynamics in soil and
groundwater after restoration of intensively cultivated fens, in: Wetlands in
Central Europe: Soil Organisms, Soil Ecological Processes and Trace Gas
Emissions, edited by: Broll, G., Merbach, W., and Pfeiffer, E.-M.,
Springer Berlin Heidelberg, Berlin, Heidelberg, 99–116, 2002.
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., Köhler, S., and Buffam, I.: Seasonal TOC export from seven
boreal catchments in northern Sweden, Aquat. Sci., 66, 223–230,
https://doi.org/10.1007/s00027-004-0700-2, 2004.
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.
Ledesma, J. L. J., Futter, M. N., Blackburn, M., Lidman, F., Grabs, T.,
Sponseller, R. A., Laudon, H., Bishop, K. H., and Köhler, S. J.: Towards
an Improved Conceptualization of Riparian Zones in Boreal Forest Headwaters,
Ecosystems, 21, 297–315, https://doi.org/10.1007/s10021-017-0149-5, 2017.
Leifeld, J. and Menichetti, L.: The underappreciated potential of peatlands
in global climate change mitigation strategies, Nat. Commun., 9, 1071,
https://doi.org/10.1038/s41467-018-03406-6, 2018.
Leroy, F., Gogo, S., Guimbaud, C., Bernard-Jannin, L., Hu, Z., and
Laggoun-Défarge, F.: Vegetation composition controls temperature
sensitivity of CO2 and CH4 emissions and DOC concentration in peatlands,
Soil Biol. Biochem., 107, 164–167, https://doi.org/10.1016/j.soilbio.2017.01.005, 2017.
Limpens, J., Berendse, F., Blodau, C., Canadell, J. G., Freeman, C., Holden, J., Roulet, N., Rydin, H., and Schaepman-Strub, G.: Peatlands and the carbon cycle: from local processes to global implications – a synthesis, Biogeosciences, 5, 1475–1491, https://doi.org/10.5194/bg-5-1475-2008, 2008.
Małoszewski, P., Rauert, W., Stichler, W., and Herrman, A.: Application for flow models in an alpine catchment area using tritium and deuterium data, J. Hydrol., 66, 319–330, 1983.
McClain, M. E., Boyer, E. W., Dent, C. L., Gergel, S. E., Grimm, N. B.,
Groffman, P. M., Hart, S. C., Harvey, J. W., Johnston, C. A., Mayorga, E.,
McDowell, W. H., and Pinay, G.: Biogeochemical Hot Spots and Hot Moments at
the Interface of Terrestrial and Aquatic Ecosystems, Ecosystems, 6, 301–312, https://doi.org/10.1007/s10021-003-0161-9, 2003.
Millet, L., Rius, D., Galop, D., Heiri, O., and Brooks, S. J.:
Chironomid-based reconstruction of Lateglacial summer temperatures from the
Ech palaeolake record (French western Pyrenees), Palaeogeogr. Palaeocl., 315–316, 86–99, https://doi.org/10.1016/j.palaeo.2011.11.014, 2012.
Moore, S., Evans, C. D., Page, S. E., Garnett, M. H., Jones, T. G., Freeman,
C., Hooijer, A., Wiltshire, A. J., Limin, S. H., and Gauci, V.: Deep
instability of deforested tropical peatlands revealed by fluvial organic
carbon fluxes, Nature, 493, 660–663, https://doi.org/10.1038/nature11818, 2013.
Moore, T. R.: Dissolved iron and organic matter in northern peatlands, Soil
Sci., 145, 70–76, 1988.
Müller, D., Warneke, T., Rixen, T., Müller, M., Jamahari, S., Denis, N., Mujahid, A., and Notholt, J.: Lateral carbon fluxes and CO2 outgassing from a tropical peat-draining river, Biogeosciences, 12, 5967–5979, https://doi.org/10.5194/bg-12-5967-2015, 2015.
Nichols, J. E. and Peteet, D. M.: Rapid expansion of northern peatlands and
doubled estimate of carbon storage, Nat. Geosci., 12, 917–921,
https://doi.org/10.1038/s41561-019-0454-z, 2019.
Olefeldt, D. and Roulet, N. T.: Effects of permafrost and hydrology on the
composition and transport of dissolved organic carbon in a subarctic
peatland complex, J. Geophys. Res., 117, G01005, https://doi.org/10.1029/2011JG001819, 2012.
Page, S. E., Rieley, J. O., and Banks, C. J.: Global and regional importance
of the tropical peatland carbon pool, Glob. Change Biol., 17, 798–818,
https://doi.org/10.1111/j.1365-2486.2010.02279.x, 2011.
Pastor, J., Solin, J., Bridgham, S. D., Updegraff, K., Harth, C.,
Weishampel, P., and Dewey, B.: Global warming and the export of dissolved
organic carbon from boreal peatlands, Oikos, 100, 380–386,
https://doi.org/10.1034/j.1600-0706.2003.11774.x, 2003.
Posavec, K., Giacopetti, M., Materazzi, M., and Birk, S.: Method and Excel
VBA Algorithm for Modeling Master Recession Curve Using Trigonometry
Approach, Groundwater, 55, 891–898, https://doi.org/10.1111/gwat.12549, 2017.
Python Software Foundation: Python.org, Python Software Foundation, available at: https://www.python.org/, last access: 24 June 2019.
Quinton, W. L., Hayashi, M., and Carey, S. K.: Peat hydraulic conductivity in cold regions and its relation to pore size and geometry, Hydrol. Process., 22, 2829–2837, 2008.
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.
R Core team: R: A Language and Environment for Statistical Computing, available at: https://www.r-project.org/, last access: 18 March
2019.
Reille, M.: Nouvelles recherches pollenanalytiques à Freychinède,
Pyrénées ariegeoises, France, Laboratoire de Botanique historique et Palynologie, Marseille, 1–10 Annex., Novembre 1990.
Ritson, J. P.: The impact of climate change and management practices on
dissolved organic carbon (DOC) flux and drinking water treatment in peatland
catchments., 2015.
Ritson, J. P., Brazier, R. E., Graham, N. J. D., Freeman, C., Templeton, M. R., and Clark, J. M.: The effect of drought on dissolved organic carbon (DOC) release from peatland soil and vegetation sources, Biogeosciences, 14, 2891–2902, https://doi.org/10.5194/bg-14-2891-2017, 2017.
Rius, D., Vanniére, B., and Galop, D.: Holocene history of fire,
vegetation and land use from the central Pyrenees (France), Quaternary Res.,
77, 54–64, https://doi.org/10.1016/j.yqres.2011.09.009, 2012.
Rode, M., Wade, A. J., Cohen, M. J., Hensley, R. T., Bowes, M. J., Kirchner,
J. W., Arhonditsis, G. B., Jordan, P., Kronvang, B., Halliday, S. J.,
Skeffington, R. A., Rozemeijer, J. C., Aubert, A. H., Rinke, K., and Jomaa,
S.: Sensors in the Stream: The High-Frequency Wave of the Present, Environ.
Sci. Technol., 50, 10297–10307, https://doi.org/10.1021/acs.est.6b02155, 2016.
Rodgers, P., Soulsby, C., Waldron, S., and Tetzlaff, D.: Using stable isotope tracers to assess hydrological flow paths, residence times and landscape influences in a nested mesoscale catchment, Hydrol. Earth Syst. Sci., 9, 139–155, https://doi.org/10.5194/hess-9-139-2005, 2005.
Rosset, T.: High frequency biogeochemical and hydrological monitoring in two mountainous peatlands, PANGAEA, https://doi.org/10.1594/PANGAEA.905838, 2019.
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, 2019.
Rothwell, J. J., Evans, M. G., Daniels, S. M., and Allott, T. E. H.: Baseflow
and stormflow metal concentrations in streams draining contaminated peat
moorlands in the Peak District National Park (UK), J. Hydrol., 341,
90–104, https://doi.org/10.1016/j.jhydrol.2007.05.004, 2007.
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.
Rycroft, D. W., Williams, D. J. A., and Ingram, H. A. P.: The Transmission of
Water Through Peat: I. Review, J. Ecol., 63, 535–556, https://doi.org/10.2307/2258734, 1975.
Ryder, E., de Eyto, E., Dillane, M., Poole, R., and Jennings, E.: Identifying
the role of environmental drivers in organic carbon export from a forested
peat catchment, Sci. Total Environ., 490, 28–36,
https://doi.org/10.1016/j.scitotenv.2014.04.091, 2014.
Scharlemann, J. P., Tanner, E. V., Hiederer, R., and Kapos, V.: Global soil
carbon: understanding and managing the largest terrestrial carbon pool, Carbon Manag., 5, 81–91, https://doi.org/10.4155/cmt.13.77, 2014.
Spencer, R. G. M., Aiken, G. R., Dornblaser, M. M., Butler, K. D., Holmes,
R. M., Fiske, G., Mann, P. J., and Stubbins, A.: Chromophoric dissolved
organic matter export from U.S. rivers, Geophys. Res. Lett., 40,
1575–1579, https://doi.org/10.1002/grl.50357, 2013.
Strack, M. and Zuback, Y. C. A.: Annual carbon balance of a peatland 10 yr following restoration, Biogeosciences, 10, 2885–2896, https://doi.org/10.5194/bg-10-2885-2013, 2013.
Strack, M., Waddington, J. M., Bourbonniere, R. A., Buckton, E. L., Shaw,
K., Whittington, P., and Price, J. S.: Effect of water table drawdown on
peatland dissolved organic carbon export and dynamics, Hydrol. Process.,
22, 3373–3385, https://doi.org/10.1002/hyp.6931, 2008.
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.
Tipping, E., Smith, E. J., Lawlor, A. J., Hughes, S., and Stevens, P. A.:
Predicting the release of metals from ombrotrophic peat due to
drought-induced acidification, Environ. Pollut., 123, 239–253,
https://doi.org/10.1016/S0269-7491(02)00375-5, 2003.
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.
Tranvik, L. J. and Jansson, M.: Climate change (Communication arising):
Terrestrial export of organic carbon, Nature, 415, 861–862,
https://doi.org/10.1038/415861b, 2002.
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., Wang, H., and Soulsby, C.: Spatio-temporal diel
DOC cycles in a wet, low energy, northern catchment: Highlighting and
questioning the sub-daily rhythms of catchment functioning, J. Hydrol., 563,
962–974, https://doi.org/10.1016/j.jhydrol.2018.06.056, 2018.
Walling, D. E. and Foster, I. D. L.: Variations in the natural chemical
concentration of river water during flood flows, and the lag effect: Some
further comments, J. Hydrol., 26, 237–244, https://doi.org/10.1016/0022-1694(75)90005-0, 1975.
Watras, C. J., Hanson, P. C., Stacy, T. L., Morrison, K. M., Mather, J., Hu,
Y.-H., and Milewski, P.: A temperature compensation method for CDOM
fluorescence sensors in freshwater, Limnol. Oceanogr. Meth., 9, 296–301, https://doi.org/10.4319/lom.2011.9.296, 2011.
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, 2018.
Whitfield, C. J., Aherne, J., Gibson, J. J., Seabert, T. A., and Watmough, S.
A.: The controls on boreal peatland surface water chemistry in Northern
Alberta, Canada, Hydrol. Process., 24, 2143–2155, https://doi.org/10.1002/hyp.7637,
2010.
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., Burt, T. P., and Adamson, J. K.: Trends in Drought Frequency –
the Fate of DOC Export From British Peatlands, Clim. Change, 76, 339–359, https://doi.org/10.1007/s10584-006-9069-7, 2006.
Yang, L., Chang, S.-W., Shin, H.-S., and Hur, J.: Tracking the evolution of
stream DOM source during storm events using end member mixing analysis based
on DOM quality, J. Hydrol., 523, 333–341, https://doi.org/10.1016/j.jhydrol.2015.01.074, 2015.
Zheng, Y., Waldron, S., and Flowers, H.: Fluvial dissolved organic carbon
composition varies spatially and seasonally in a small catchment draining a
wind farm and felled forestry, Sci. Total Environ., 626, 785–794,
https://doi.org/10.1016/j.scitotenv.2018.01.001, 2018.
Short summary
Peatlands export a large amount of DOC through inland waters. This study aims at identifying the mechanisms controlling the DOC concentration at the outlet of two mountainous peatlands in the French Pyrenees. Peat water temperature and water table dynamics are shown to drive seasonal- and event-scale DOC concentration variation. According to water recession times, peatlands appear as complexes of different hydrological and biogeochemical units supplying inland waters at different rates.
Peatlands export a large amount of DOC through inland waters. This study aims at identifying the...
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