Articles | Volume 19, issue 18
https://doi.org/10.5194/bg-19-4571-2022
© Author(s) 2022. 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-19-4571-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
22 Sep 2022
Research article |
| 22 Sep 2022
| 22 Sep 2022
Dissolved organic matter concentration and composition discontinuity at the peat–pool interface in a boreal peatland
Centre de Recherche sur la Dynamique du Système Terre
(GÉOTOP), Université du Québec à Montréal, Montréal, Canada
Groupe de Recherche Inter-universitaire en Limnologie (GRIL),
Université du Québec à Montréal, Montréal, Canada
Institut des Sciences de l'Environnement (ISE), Université du
Québec à Montréal, Montréal, Canada
Laure Gandois
CORRESPONDING AUTHOR
Laboratoire Géosciences Rennes, Université de Rennes, CNRS, UMR 6118, 35000 Rennes,
France
Laurent Jeanneau
Laboratoire Géosciences Rennes, UMR 6118, CNRS-Université
de Rennes, Rennes, France
Pierre Taillardat
Centre de Recherche sur la Dynamique du Système Terre
(GÉOTOP), Université du Québec à Montréal, Montréal, Canada
Integrated Tropical Peatlands Research Program (INTPREP), National
University of Singapore, Singapore
Michelle Garneau
Centre de Recherche sur la Dynamique du Système Terre
(GÉOTOP), Université du Québec à Montréal, Montréal, Canada
Groupe de Recherche Inter-universitaire en Limnologie (GRIL),
Université du Québec à Montréal, Montréal, Canada
Institut des Sciences de l'Environnement (ISE), Université du
Québec à Montréal, Montréal, Canada
Département de Géographie, Université du Québec
à Montréal, Montréal, Canada
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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.
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.
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.
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.
Thomas Rosset, Stéphane Binet, Jean-Marc Antoine, Emilie Lerigoleur, François Rigal, and Laure Gandois
Biogeosciences, 17, 3705–3722, https://doi.org/10.5194/bg-17-3705-2020, https://doi.org/10.5194/bg-17-3705-2020, 2020
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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.
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.
Cited articles
Arsenault, J., Talbot, J., and Moore, T. R.: Environmental controls of C, N
and P biogeochemistry in peatland pools, Sci. Total Environ., 631–632,
714–722, https://doi.org/10.1016/j.scitotenv.2018.03.064, 2018.
Arsenault, J., Talbot, J., Moore, T. R., Beauvais, M., Franssen, J., and
Roulet, N. T.: The Spatial Heterogeneity of Vegetation, Hydrology and Water
Chemistry in a Peatland with Open-Water Pools, Ecosystems, 22, 1352–1367,
https://doi.org/10.1007/s10021-019-00342-4, 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.
Autio, I., Soinne, H., Helin, J., Asmala, E., and Hoikkala, L.: Effect of
catchment land use and soil type on the concentration, quality, and
bacterial degradation of riverine dissolved organic matter, Ambio, 45,
331–349, https://doi.org/10.1007/s13280-015-0724-y, 2016.
Banaœ, K.: The hydrochemistry of peatland lakes as a result of the
morphological characteristics of their basins, Oceanol. Hydrobiol. Stud.,
42, 28–39, https://doi.org/10.2478/s13545-013-0057-z, 2013.
Billett, M. F., Palmer, S. M., Hope, D., Deacon, C., Storeton-West, R.,
Hargreaves, K. J., Flechard, C., and Fowler, D.: Linking
land-atmosphere-stream carbon fluxes in a lowland peatland system, Global Biogeochem. Cy., 18, GB1024,
https://doi.org/10.1029/2003GB002058, 2004.
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.
Blodau, C., Roulet, N. T., Heitmann, T., Stewart, H., Beer, J., Lafleur, P.,
and Moore, T. R.: Belowground carbon turnover in a temperate ombrotrophic
bog: BELOWGROUND C TURNOVER, Global Biogeochem. Cy., 21, GB1021, https://doi.org/10.1029/2005GB002659, 2007.
Burd, K., Estop-Aragonés, C., Tank, S. E., and Olefeldt, D.: Lability of
dissolved organic carbon from boreal peatlands: interactions between
permafrost thaw, wildfire, and season, Can. J. Soil Sci., 100, 503–515,
https://doi.org/10.1139/cjss-2019-0154, 2020.
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 δ18 O–H2O
stable isotopes, Hydrol. Process., 33, 2792–2803,
https://doi.org/10.1002/hyp.13528, 2019.
Campeau, A., Bishop, K. H., Billett, M. F., Garnett, M. H., Laudon, H.,
Leach, J. A., Nilsson, M. B., Öquist, M. G., and Wallin, M. B.: Aquatic
export of young dissolved and gaseous carbon from a pristine boreal fen:
Implications for peat carbon stock stability, Glob. Change Biol., 23,
5523–5536, https://doi.org/10.1111/gcb.13815, 2017.
Catalán, N., Marcé, R., Kothawala, D. N., and Tranvik, Lars. J.:
Organic carbon decomposition rates controlled by water retention time across
inland waters, Nat. Geosci., 9, 501–504, https://doi.org/10.1038/ngeo2720,
2016.
Charman, D.: Peatlands and Environment Change, 1st edn., Willey, 320 pp., ISBN:978-0-470-84410-6, 2002.
Chaudhary, N., Miller, P. A., and Smith, B.: Biotic and Abiotic Drivers of
Peatland Growth and Microtopography: A Model Demonstration, Ecosystems, 21,
1196–1214, https://doi.org/10.1007/s10021-017-0213-1, 2018.
Cory, R. M., Miller, M. P., McKnight, D. M., Guerard, J. J., and Miller, P.
L.: Effect of instrument-specific response on the analysis of fulvic acid
fluorescence spectra: Evaluating instrument-specific response, Limnol.
Oceanogr. Methods, 8, 67–78, https://doi.org/10.4319/lom.2010.8.67, 2010.
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.
Deshpande, B. N., Crevecoeur, S., Matveev, A., and Vincent, W. F.: Bacterial production in subarctic peatland lakes enriched by thawing permafrost, Biogeosciences, 13, 4411–4427, https://doi.org/10.5194/bg-13-4411-2016, 2016.
Dilling, J. and Kaiser, K.: Estimation of the hydrophobic fraction of
dissolved organic matter in water samples using UV photometry, Water Res.,
36, 5037–5044, https://doi.org/10.1016/S0043-1354(02)00365-2, 2002.
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.
Elder, J. F., Rybicki, N. B., Carter, V., and Weintraub, V.: Sources and
yields of dissolved carbon in northern Wisconsin stream catchments with
differing amounts of peatland, Wetlands, 20, 113–125,
https://doi.org/10.1672/0277-5212(2000)020[0113:SAYODC]2.0.CO;2, 2000.
Folhas, D., Duarte, A. C., Pilote, M., Vincent, W. F., Freitas, P., Vieira,
G., Silva, A. M. S., Duarte, R. M. B. O., and Canário, J.: Structural
Characterization of Dissolved Organic Matter in Permafrost Peatland Lakes,
Water, 12, 3059, https://doi.org/10.3390/w12113059, 2020.
Frey, K. E., Sobczak, W. V., Mann, P. J., and Holmes, R. M.: Optical properties and bioavailability of dissolved organic matter along a flow-path continuum from soil pore waters to the Kolyma River mainstem, East Siberia, Biogeosciences, 13, 2279–2290, https://doi.org/10.5194/bg-13-2279-2016, 2016.
Gandois, L., Hoyt, A. M., Hatté, C., Jeanneau, L., Teisserenc, R.,
Liotaud, M., and Tananaev, N.: Contribution of Peatland Permafrost to
Dissolved Organic Matter along a Thaw Gradient in North Siberia, Environ.
Sci. Technol., 53, 14165–14174, https://doi.org/10.1021/acs.est.9b03735,
2019.
Goñi, M. A. and Hedges, J. I.: Lignin dimers: Structures, distribution,
and potential geochemical applications, Geochim. Cosmochim. Ac., 56,
4025–4043, https://doi.org/10.1016/0016-7037(92)90014-A, 1992.
Graham, J. D., Glenn, N. F., Spaete, L. P., and Hanson, P. J.:
Characterizing Peatland Microtopography Using Gradient and Microform-Based
Approaches, Ecosystems, 23, 1464–1480,
https://doi.org/10.1007/s10021-020-00481-z, 2020.
Haan, H. D. and Boer, T. D.: Applicability of light absorbance and
fluorescence as measures of concentration and molecular size of dissolved
organic carbon in humic Lake Tjeukemeer, Water Res., 21, 731–734,
https://doi.org/10.1016/0043-1354(87)90086-8, 1987.
Heinz, M. and Zak, D.: Storage effects on quantity and composition of
dissolved organic carbon and nitrogen of lake water, leaf leachate and peat
soil water, Water Res., 130, 98–104,
https://doi.org/10.1016/j.watres.2017.11.053, 2018.
Helms, J. R., Stubbins, A., Ritchie, J. D., Minor, E. C., Kieber, D. J., and
Mopper, K.: Absorption spectral slopes and slope ratios as indicators of
molecular weight, source, and photobleaching of chromophoric dissolved
organic matter, Limnol. Oceanogr., 53, 955–969,
https://doi.org/10.4319/lo.2008.53.3.0955, 2008.
Holden, J., Moody, C. S., Edward Turner, T., McKenzie, R., Baird, A. J.,
Billett, M. F., Chapman, P. J., Dinsmore, K. J., Grayson, R. P., Andersen,
R., Gee, C., and Dooling, G.: Water-level dynamics in natural and artificial
pools in blanket peatlands, Hydrol. Process., 32, 550–561,
https://doi.org/10.1002/hyp.11438, 2018.
Hulatt, C. J., Kaartokallio, H., Asmala, E., Autio, R., Stedmon, C. A.,
Sonninen, E., Oinonen, M., and Thomas, D. N.: Bioavailability and
radiocarbon age of fluvial dissolved organic matter (DOM) from a northern
peatland-dominated catchment: effect of land-use change, Aquat. Sci., 76,
393–404, https://doi.org/10.1007/s00027-014-0342-y, 2014.
Jaffé, R., Yamashita, Y., Maie, N., Cooper, W. T., Dittmar, T., Dodds,
W. K., Jones, J. B., Myoshi, T., Ortiz-Zayas, J. R., Podgorski, D. C., and
Watanabe, A.: Dissolved Organic Matter in Headwater Streams: Compositional
Variability across Climatic Regions of North America, Geochim. Cosmochim.
Ac., 94, 95–108, https://doi.org/10.1016/j.gca.2012.06.031, 2012.
Jeanneau, L., Jaffrezic, A., Pierson-Wickmann, A.-C., Gruau, G., Lambert,
T., and Petitjean, P.: Constraints on the Sources and Production Mechanisms
of Dissolved Organic Matter in Soils from Molecular Biomarkers, Vadose Zone
J., 13, vzj2014.02.0015, https://doi.org/10.2136/vzj2014.02.0015, 2014.
Jeanneau, L., Denis, M., Pierson-Wickmann, A.-C., Gruau, G., Lambert, T., and Petitjean, P.: Sources of dissolved organic matter during storm and inter-storm conditions in a lowland headwater catchment: constraints from high-frequency molecular data, Biogeosciences, 12, 4333–4343, https://doi.org/10.5194/bg-12-4333-2015, 2015.
Jones, T. G., Evans, C. D., Jones, D. L., Hill, P. W., and Freeman, C.:
Transformations in DOC along a source to sea continuum; impacts of
photo-degradation, biological processes and mixing, Aquat. Sci., 78,
433–446, https://doi.org/10.1007/s00027-015-0461-0, 2016.
Kaal, J., Cortizas, A. M., and Biester, H.: Downstream changes in molecular
composition of DOM along a headwater stream in the Harz mountains (Central
Germany) as determined by FTIR, Pyrolysis-GC–MS and THM-GC–MS, J. Anal.
Appl. Pyrolysis, 126, 50–61, https://doi.org/10.1016/j.jaap.2017.06.025,
2017.
Kaal, J., Plaza, C., Nierop, K. G. J., Pérez-Rodríguez, M., and
Biester, H.: Origin of dissolved organic matter in the Harz Mountains
(Germany): A thermally assisted hydrolysis and methylation (THM-GC–MS)
study, Geoderma, 378, 114635,
https://doi.org/10.1016/j.geoderma.2020.114635, 2020.
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, https://doi.org/10.1097/00010694-200004000-00001,
2000.
Kane, E. S., Mazzoleni, L. R., Kratz, C. J., Hribljan, J. A., Johnson, C.
P., Pypker, T. G., and Chimner, R.: Peat porewater dissolved organic carbon
concentration and lability increase with warming: a field temperature
manipulation experiment in a poor-fen, Biogeochemistry, 119, 161–178,
https://doi.org/10.1007/s10533-014-9955-4, 2014.
Kaplan, L. A. and Cory, R. M.: Dissolved Organic Matter in Stream
Ecosystems, in: Stream Ecosystems in a Changing Environment, Elsevier,
241–320, https://doi.org/10.1016/B978-0-12-405890-3.00006-3, 2016.
Knorr, K.-H.: DOC-dynamics in a small headwater catchment as driven by redox fluctuations and hydrological flow paths – are DOC exports mediated by iron reduction/oxidation cycles?, Biogeosciences, 10, 891–904, https://doi.org/10.5194/bg-10-891-2013, 2013.
Lalonde, K., Middlestead, P., and Gélinas, Y.: Automation of 13C
Lapierre, J.-F. and del Giorgio, P. A.: Partial coupling and differential regulation of biologically and photochemically labile dissolved organic carbon across boreal aquatic networks, Biogeosciences, 11, 5969–5985, https://doi.org/10.5194/bg-11-5969-2014, 2014.
Laurion, I. and Mladenov, N.: Dissolved organic matter photolysis in
Canadian arctic thaw ponds, Environ. Res. Lett., 8, 035026,
https://doi.org/10.1088/1748-9326/8/3/035026, 2013.
Laurion, I., Massicotte, P., Mazoyer, F., Negandhi, K., and Mladenov, N.:
Weak mineralization despite strong processing of dissolved organic matter in
Eastern Arctic tundra ponds, Limnol. Oceanogr., 66, 1–17, https://doi.org/10.1002/lno.11634, 2021.
Lê, S., Josse, J., and Husson, F.: FactoMineR: An R Package for
Multivariate Analysis, J. Stat. Softw., 25, 1–18, https://doi.org/10.18637/jss.v025.i01, 2008.
Levy, Z. F., Siegel, D. I., Dasgupta, S. S., Glaser, P. H., and Welker, J.
M.: Stable isotopes of water show deep seasonal recharge in northern bogs
and fens, Hydrol. Process., 28, 4938–4952, https://doi.org/10.1002/hyp.9983, 2014.
Mann, P. J., Eglinton, T. I., McIntyre, C. P., Zimov, N., Davydova, A.,
Vonk, J. E., Holmes, R. M., and Spencer, R. G. M.: Utilization of ancient
permafrost carbon in headwaters of Arctic fluvial networks, Nat. Commun., 6,
7856, https://doi.org/10.1038/ncomms8856, 2015.
McKnight, D. M., Andrews, E. D., Spaulding, S. A., and Aiken, G. R.: Aquatic
fulvic acids in algal-rich antarctic ponds, Limnol. Oceanogr., 39,
1972–1979, https://doi.org/10.4319/lo.1994.39.8.1972, 1994.
McKnight, D. M., Boyer, E. W., Westerhoff, P. K., Doran, P. T., Kulbe, T.,
and Andersen, D. T.: Spectrofluorometric characterization of dissolved
organic matter for indication of precursor organic material and aromaticity,
Limnol. Oceanogr., 46, 38–48, https://doi.org/10.4319/lo.2001.46.1.0038,
2001.
Meteorological Service of Canada and Environment and Climate Change Canada: Historical daily weather data from the station Havre Saint Pierre A (1990–2019), Meteorological Service of Canada and Environment and Climate Change Canada [data set], https://climatedata.ca/download/#station-download (last access: 18 September 2022), 2019.
Moody, C. S. and Worrall, F.: Towards understanding organic matter fluxes
and reactivity in surface waters: Filtering impact on DOC
Nungesser, M. K.: Modelling microtopography in boreal peatlands: hummocks
and hollows, Ecol. Model., 165, 175–207,
https://doi.org/10.1016/S0304-3800(03)00067-X, 2003.
Parlanti, E.: Dissolved organic matter fuorescence spectroscopy as a tool to
estimate biological activity in a coastal zone submitted to anthropogenic
inputs, Org. Geochem., 31, 1765–1781, 2000.
Payandi-Rolland, D., Shirokova, L. S., Tesfa, M., Bénézeth, P., Lim,
A. G., Kuzmina, D., Karlsson, J., Giesler, R., and Pokrovsky, O. S.:
Dissolved organic matter biodegradation along a hydrological continuum in
permafrost peatlands, Sci. Total Environ., 749, 141463,
https://doi.org/10.1016/j.scitotenv.2020.141463, 2020.
Payette, S.: Le contexte physique et biogéographique., in: Écologie
des tourbières du Québec-Labrador, edited by: Payette, S. and Rochefort, L., Presses de l'Université
Laval, Québec, 9–37, ISBN: 9782763777733, 2001.
Pelletier, L., Garneau, M., and Moore, T. R.: Variation in CO2 exchange over
three summers at microform scale in a boreal bog, Eastmain region,
Québec, Canada, J. Geophys. Res., 116, G03019,
https://doi.org/10.1029/2011JG001657, 2011.
Pelletier, L., Strachan, I. B., Garneau, M., and Roulet, N. T.: Carbon
release from boreal peatland open water pools: Implication for the
contemporary C exchange: Carbon release from peatland pools, J. Geophys. Res. Biogeo., 119, 207–222, https://doi.org/10.1002/2013JG002423,
2014.
Pelletier, L., Strachan, I. B., Roulet, N. T., and Garneau, M.: Can boreal
peatlands with pools be net sinks for CO2?, Environ. Res. Lett., 10,
035002, https://doi.org/10.1088/1748-9326/10/3/035002, 2015.
Peralta-Tapia, A., Sponseller, R. A., Tetzlaff, D., Soulsby, C., and Laudon,
H.: Connecting precipitation inputs and soil flow pathways to stream water
in contrasting boreal catchments, Hydrol. Process., 29, 3546–3555,
https://doi.org/10.1002/hyp.10300, 2015.
Peura, S., Wauthy, M., Simone, D., Eiler, A., Einarsdóttir, K., Rautio,
M., and Bertilsson, S.: Ontogenic succession of thermokarst thaw ponds is
linked to dissolved organic matter quality and microbial degradation
potential, Limnol. Oceanogr., 65, S248–S263,
https://doi.org/10.1002/lno.11349, 2016.
Prijac, A., Gandois, L., Jeanneau, L., Taillardat, P., and Garneau, M.: Concentration, composition and potential degradation of dissolved organic matter derived from peat porewater and pools discrete sampling of an ombrotrophic boreal peatland (Minganie, Québec, Canada), PANGAEA [data set], https://doi.org/10.1594/PANGAEA.945391, 2022.
Primeau, G. and Garneau, M.: Carbon accumulation in peatlands along a boreal
to subarctic transect in eastern Canada, The 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 Spencer, R. G. M.: Riverine DOM, in: Biogeochemistry of
Marine Dissolved Organic Matter, edited by: Hansell, D. A. and Carlson, C. A., Elsevier, 509–533,
https://doi.org/10.1016/B978-0-12-405940-5.00011-X, 2015.
Repo, E., Huttunen, J. T., Naumov, A. V., Chichulin, A. V., Lapshina, E. D.,
Bleuten, W., and Martikainen, P. J.: Release of CO2 and CH4 from small
wetland lakes in western Siberia, Tellus B, 59,
788–796, https://doi.org/10.1111/j.1600-0889.2007.00301.x, 2007.
Rezanezhad, F., Price, J. S., Quinton, W. L., Lennartz, B., Milojevic, T.,
and Cappellen, P. V.: Structure of peat soils and implications for water
storage, flow and solute transport: A review update for geochemists, Chem.
Geol., 10, 75–84, https://doi.org/10.1016/j.chemgeo.2016.03.010, 2016.
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.
Rumpel, C. and Dignac, M.-F.: Gas chromatographic analysis of
monosaccharides in a forest soil profile: Analysis by gas chromatography
after trifluoroacetic acid hydrolysis and reduction–acetylation, Soil Biol.
Biochem., 38, 1478–1481, https://doi.org/10.1016/j.soilbio.2005.09.017,
2006.
Rydin, H., Jeglum, J. K., and Bennett, K. D.: The biology of peatlands, 2nd edn., Oxford University Press, Oxford, 382 pp., ISBN: 9780199603008, 2013.
Schindler, D. W., Curtis, P. J., Bayley, S. E., Parker, B. R., Beaty, K. G.,
and Stainton, M. P.: Climate-induced changes in the dissolved organic carbon
budgets of boreal lakes, Biogeochemistry, 36, 9–28, 1997.
Shi, X., Thornton, P. E., Ricciuto, D. M., Hanson, P. J., Mao, J., Sebestyen, S. D., Griffiths, N. A., and Bisht, G.: Representing northern peatland microtopography and hydrology within the Community Land Model, Biogeosciences, 12, 6463–6477, https://doi.org/10.5194/bg-12-6463-2015, 2015.
Spencer, R. G. M., Aiken, G. R., Wickland, K. P., Striegl, R. G., and
Hernes, P. J.: Seasonal and spatial variability in dissolved organic matter
quantity and composition from the Yukon River basin, Alaska, Global Biogeochem. Cy., 22, GB4002,
https://doi.org/10.1029/2008GB003231, 2008.
Spencer, R. G. M., Mann, P. J., Dittmar, T., Eglinton, T. I., McIntyre, C.,
Holmes, R. M., Zimov, N., and Stubbins, A.: Detecting the signature of
permafrost thaw in Arctic rivers,
Geophys. Res. Lett., 42, 2830–2835, https://doi.org/10.1002/2015GL063498,
2015.
Striegl, R. G., Dornblaser, M. M., McDonald, C. P., Rover, J. A., and Stets,
E. G.: Carbon dioxide and methane emissions from the Yukon River system,
Global Biogeochem. Cy., 26, 2012GB004306,
https://doi.org/10.1029/2012GB004306, 2012.
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.
Tfaily, M. M., Hamdan, R., Corbett, J. E., Chanton, J. P., Glaser, P. H.,
and Cooper, W. T.: Investigating dissolved organic matter decomposition in
northern peatlands using complimentary analytical techniques, Geochim.
Cosmochim. Acta, 112, 116–129, https://doi.org/10.1016/j.gca.2013.03.002,
2013.
Tfaily, M. M., Corbett, J. E., Wilson, R., Chanton, J. P., Glaser, P. H.,
Cawley, K. M., Jaffé, R., and Cooper, W. T.: Utilization of PARAFAC
-Modeled Excitation-Emission Matrix (EEM) Fluorescence Spectroscopy to
Identify Biogeochemical Processing of Dissolved Organic Matter in a Northern
Peatland, Photochem. Photobiol., 91, 684–695,
https://doi.org/10.1111/php.12448, 2015.
Tfaily, M. M., Wilson, R. M., Cooper, W. T., Kostka, J. E., Hanson, P., and
Chanton, J. P.: Vertical Stratification of Peat Pore Water Dissolved Organic
Matter Composition in a Peat Bog in Northern Minnesota: Pore Water DOM
composition in a peat bog, J. Geophys. Res. Biogeo., 123, 479–494,
https://doi.org/10.1002/2017JG004007, 2018.
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., 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.
Vonk, J. E., Tank, S. E., Mann, P. J., Spencer, R. G. M., Treat, C. C., Striegl, R. G., Abbott, B. W., and Wickland, K. P.: Biodegradability of dissolved organic carbon in permafrost soils and aquatic systems: a meta-analysis, Biogeosciences, 12, 6915–6930, https://doi.org/10.5194/bg-12-6915-2015, 2015.
Ward, C. P. and Cory, R. M.: Complete and Partial Photo-oxidation of
Dissolved Organic Matter Draining Permafrost Soils, Environ. Sci. Technol.,
50, 3545–3553, https://doi.org/10.1021/acs.est.5b05354, 2016.
Weishaar, J. L., Aiken, G. R., Bergamaschi, B. A., Fram, M. S., Fujii, R.,
and Mopper, K.: Evaluation of Specific Ultraviolet Absorbance as an
Indicator of the Chemical Composition and Reactivity of Dissolved Organic
Carbon, Environ. Sci. Technol., 37, 4702–4708,
https://doi.org/10.1021/es030360x, 2003.
White, M.: Modèle de développement des tourbières
minérotrophes aqualysées du Haut-Boréal québécois,
Université Laval, Québec, 78 pp., orpus ID: 135205929, 2011.
Wickham, H.: ggplot2 Elegant Graphics for Data Analysis, Springer
International Publishing, Cham, https://doi.org/10.1007/978-3-319-24277-4,
2016.
Wilson, H. F. and Xenopoulos, M. A.: Effects of agricultural land use on the
composition of fluvial dissolved organic matter, Nat. Geosci., 2, 37–41,
https://doi.org/10.1038/ngeo391, 2009.
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., Moody, C. S., Clay, G. D., Burt, T. P., and Rose, R.: The flux
of organic matter through a peatland ecosystem: The role of cellulose,
lignin, and their control of the ecosystem oxidation state: Flux of Organic
Matter Through a Peat, J. Geophys. Res. Biogeo., 122, 1655–1671,
https://doi.org/10.1002/2016JG003697, 2017.
Yu, Z. C.: Northern peatland carbon stocks and dynamics: a review, Biogeosciences, 9, 4071–4085, https://doi.org/10.5194/bg-9-4071-2012, 2012.
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Short summary
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.
Pools are common features of peatlands. We documented dissolved organic matter (DOM) composition...
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