Articles | Volume 16, issue 16
https://doi.org/10.5194/bg-16-3207-2019
© Author(s) 2019. 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-16-3207-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
29 Aug 2019
Research article |
| 29 Aug 2019
The ratio of methanogens to methanotrophs and water-level dynamics drive methane transfer velocity in a temperate kettle-hole peat bog
Department of Civil, Environmental and Geodetic Engineering, The Ohio State University, Columbus, Ohio 43210, USA
current address: Department of Environmental Science, Policy, and Management, University of California, Berkeley, California 94720, USA
Gil Bohrer
Department of Civil, Environmental and Geodetic Engineering, The Ohio State University, Columbus, Ohio 43210, USA
Julie Slater
School of Environment and Natural Resources, The Ohio State
University, Columbus, Ohio 43210, USA
Yueh-Fen Li
Department of Microbiology, The Ohio State University, Columbus, Ohio
43210, USA
Roger Grau-Andrés
School of Environment and Natural Resources, The Ohio State
University, Columbus, Ohio 43210, USA
Yushan Hao
School of Environment and Natural Resources, The Ohio State
University, Columbus, Ohio 43210, USA
Virginia I. Rich
Department of Microbiology, The Ohio State University, Columbus, Ohio
43210, USA
G. Matt Davies
School of Environment and Natural Resources, The Ohio State
University, Columbus, Ohio 43210, USA
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Tidal salt marsh soil emits greenhouse gases, as well as sulfur-based gases, which play roles in global climate but are not well studied as they are difficult to measure. Traditional methods of measuring these gases worked relatively well for carbon dioxide, but less so for methane, nitrous oxide, carbon disulfide, and dimethylsulfide. High variability of trace gases complicates the ability to accurately calculate gas budgets and new approaches are needed for monitoring protocols.
Janne Rinne, Patryk Łakomiec, Patrik Vestin, Joel D. White, Per Weslien, Julia Kelly, Natascha Kljun, Lena Ström, and Leif Klemedtsson
Biogeosciences, 19, 4331–4349, https://doi.org/10.5194/bg-19-4331-2022, https://doi.org/10.5194/bg-19-4331-2022, 2022
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The study uses the stable isotope 13C of carbon in methane to investigate the origins of spatial and temporal variation in methane emitted by a temperate wetland ecosystem. The results indicate that methane production is more important for spatial variation than methane consumption by micro-organisms. Temporal variation on a seasonal timescale is most likely affected by more than one driver simultaneously.
Kukka-Maaria Kohonen, Roderick Dewar, Gianluca Tramontana, Aleksanteri Mauranen, Pasi Kolari, Linda M. J. Kooijmans, Dario Papale, Timo Vesala, and Ivan Mammarella
Biogeosciences, 19, 4067–4088, https://doi.org/10.5194/bg-19-4067-2022, https://doi.org/10.5194/bg-19-4067-2022, 2022
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Four different methods for quantifying photosynthesis (GPP) at ecosystem scale were tested, of which two are based on carbon dioxide (CO2) and two on carbonyl sulfide (COS) flux measurements. CO2-based methods are traditional partitioning, and a new method uses machine learning. We introduce a novel method for calculating GPP from COS fluxes, with potentially better applicability than the former methods. Both COS-based methods gave on average higher GPP estimates than the CO2-based estimates.
Lutz Beckebanze, Benjamin R. K. Runkle, Josefine Walz, Christian Wille, David Holl, Manuel Helbig, Julia Boike, Torsten Sachs, and Lars Kutzbach
Biogeosciences, 19, 3863–3876, https://doi.org/10.5194/bg-19-3863-2022, https://doi.org/10.5194/bg-19-3863-2022, 2022
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In this study, we present observations of lateral and vertical carbon fluxes from a permafrost-affected study site in the Russian Arctic. From this dataset we estimate the net ecosystem carbon balance for this study site. We show that lateral carbon export has a low impact on the net ecosystem carbon balance during the complete study period (3 months). Nevertheless, our results also show that lateral carbon export can exceed vertical carbon uptake at the beginning of the growing season.
Shahar Baram, Asher Bar-Tal, Alon Gal, Shmulik P. Friedman, and David Russo
Biogeosciences, 19, 3699–3711, https://doi.org/10.5194/bg-19-3699-2022, https://doi.org/10.5194/bg-19-3699-2022, 2022
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Static chambers are the most common tool used to measure greenhouse gas (GHG) fluxes. We tested the impact of such chambers on nitrous oxide emissions in drip irrigation. Field measurements and 3-D simulations show that the chamber base drastically affects the water and nutrient distribution in the soil and hence the measured GHG fluxes. A nomogram is suggested to determine the optimal diameter of a cylindrical chamber that ensures minimal disturbance.
Tracy E. Rankin, Nigel T. Roulet, and Tim R. Moore
Biogeosciences, 19, 3285–3303, https://doi.org/10.5194/bg-19-3285-2022, https://doi.org/10.5194/bg-19-3285-2022, 2022
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Peatland respiration is made up of plant and peat sources. How to separate these sources is not well known as peat respiration is not straightforward and is more influenced by vegetation dynamics than previously thought. Results of plot level measurements from shrubs and sparse grasses in a woody bog show that plants' respiration response to changes in climate is related to their different root structures, implying a difference in the mechanisms by which they obtain water resources.
Alison Bressler and Jennifer Blesh
Biogeosciences, 19, 3169–3184, https://doi.org/10.5194/bg-19-3169-2022, https://doi.org/10.5194/bg-19-3169-2022, 2022
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Our field experiment tested if a mixture of a nitrogen-fixing legume and non-legume cover crop could reduce nitrous oxide (N2O) emissions following tillage, compared to the legume grown alone. We found higher N2O following both legume treatments, compared to those without, and lower emissions from the cover crop mixture at one of the two test sites, suggesting that interactions between cover crop types and soil quality influence N2O emissions.
Sari Juutinen, Mika Aurela, Juha-Pekka Tuovinen, Viktor Ivakhov, Maiju Linkosalmi, Aleksi Räsänen, Tarmo Virtanen, Juha Mikola, Johanna Nyman, Emmi Vähä, Marina Loskutova, Alexander Makshtas, and Tuomas Laurila
Biogeosciences, 19, 3151–3167, https://doi.org/10.5194/bg-19-3151-2022, https://doi.org/10.5194/bg-19-3151-2022, 2022
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We measured CO2 and CH4 fluxes in heterogenous Arctic tundra in eastern Siberia. We found that tundra wetlands with sedge and grass vegetation contributed disproportionately to the landscape's ecosystem CO2 uptake and CH4 emissions to the atmosphere. Moreover, we observed high CH4 consumption in dry tundra, particularly in barren areas, offsetting part of the CH4 emissions from the wetlands.
Jessica Plein, Rulon W. Clark, Kyle A. Arndt, Walter C. Oechel, Douglas Stow, and Donatella Zona
Biogeosciences, 19, 2779–2794, https://doi.org/10.5194/bg-19-2779-2022, https://doi.org/10.5194/bg-19-2779-2022, 2022
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Tundra vegetation and the carbon balance of Arctic ecosystems can be substantially impacted by herbivory. We tested how herbivory by brown lemmings in individual enclosure plots have impacted carbon exchange of tundra ecosystems via altering carbon dioxide (CO2) and methane (CH4) fluxes. Lemmings significantly decreased net CO2 uptake while not affecting CH4 emissions. There was no significant difference in the subsequent growing season due to recovery of the vegetation.
Jenie Gil, Maija E. Marushchak, Tobias Rütting, Elizabeth M. Baggs, Tibisay Pérez, Alexander Novakovskiy, Tatiana Trubnikova, Dmitry Kaverin, Pertti J. Martikainen, and Christina Biasi
Biogeosciences, 19, 2683–2698, https://doi.org/10.5194/bg-19-2683-2022, https://doi.org/10.5194/bg-19-2683-2022, 2022
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N2O emissions from permafrost soils represent up to 11.6 % of total N2O emissions from natural soils, and their contribution to the global N2O budget will likely increase due to climate change. A better understanding of N2O production from permafrost soil is needed to evaluate the role of arctic ecosystems in the global N2O budget. By studying microbial N2O production processes in N2O hotspots in permafrost peatlands, we identified denitrification as the dominant source of N2O in these surfaces.
Mélissa Laurent, Matthias Fuchs, Tanja Herbst, Alexandra Runge, Susanne Liebner, and Claire Treat
Biogeosciences Discuss., https://doi.org/10.5194/bg-2022-122, https://doi.org/10.5194/bg-2022-122, 2022
Revised manuscript accepted for BG
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Climate change causes permafrost thaw and potentially release of CO2 and CH4. We investigated the impact of temperature, landscape position, and microbes on the production of these gases in a short-term permafrost thaw experiment. For similar soil settings, our results show a strong heterogeneity in CH4 and CO2 production, as well as in microbial abundance. These differences are mainly due to the landscape position and the hydrological conditions established as a result of the topography.
Christian Rödenbeck, Tim DeVries, Judith Hauck, Corinne Le Quéré, and Ralph F. Keeling
Biogeosciences, 19, 2627–2652, https://doi.org/10.5194/bg-19-2627-2022, https://doi.org/10.5194/bg-19-2627-2022, 2022
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The ocean is an important part of the global carbon cycle, taking up about a quarter of the anthropogenic CO2 emitted by burning of fossil fuels and thus slowing down climate change. However, the CO2 uptake by the ocean is, in turn, affected by variability and trends in climate. Here we use carbon measurements in the surface ocean to quantify the response of the oceanic CO2 exchange to environmental conditions and discuss possible mechanisms underlying this response.
Shuang Ma, Lifen Jiang, Rachel M. Wilson, Jeff P. Chanton, Scott Bridgham, Shuli Niu, Colleen M. Iversen, Avni Malhotra, Jiang Jiang, Xingjie Lu, Yuanyuan Huang, Jason Keller, Xiaofeng Xu, Daniel M. Ricciuto, Paul J. Hanson, and Yiqi Luo
Biogeosciences, 19, 2245–2262, https://doi.org/10.5194/bg-19-2245-2022, https://doi.org/10.5194/bg-19-2245-2022, 2022
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The relative ratio of wetland methane (CH4) emission pathways determines how much CH4 is oxidized before leaving the soil. We found an ebullition modeling approach that has a better performance in deep layer pore water CH4 concentration. We suggest using this approach in land surface models to accurately represent CH4 emission dynamics and response to climate change. Our results also highlight that both CH4 flux and belowground concentration data are important to constrain model parameters.
Mika Korkiakoski, Tiia Määttä, Krista Peltoniemi, Timo Penttilä, and Annalea Lohila
Biogeosciences, 19, 2025–2041, https://doi.org/10.5194/bg-19-2025-2022, https://doi.org/10.5194/bg-19-2025-2022, 2022
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We measured CH4 fluxes and production and oxidation potentials from irrigated and non-irrigated podzolic soil in a boreal forest. CH4 sink was smaller at the irrigated site but did not cause CH4 emission, with one exception. We also showed that under laboratory conditions, not only wet conditions, but also fresh carbon, are needed to make podzolic soil into a CH4 source. Our study provides important data for improving the process models describing the upland soil CH4 dynamics.
Sarah Shakil, Suzanne E. Tank, Jorien E. Vonk, and Scott Zolkos
Biogeosciences, 19, 1871–1890, https://doi.org/10.5194/bg-19-1871-2022, https://doi.org/10.5194/bg-19-1871-2022, 2022
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Permafrost thaw-driven landslides in the western Arctic are increasing organic carbon delivered to headwaters of drainage networks in the western Canadian Arctic by orders of magnitude. Through a series of laboratory experiments, we show that less than 10 % of this organic carbon is likely to be mineralized to greenhouse gases during transport in these networks. Rather most of the organic carbon is likely destined for burial and sequestration for centuries to millennia.
Wolfgang Fischer, Christoph K. Thomas, Nikita Zimov, and Mathias Göckede
Biogeosciences, 19, 1611–1633, https://doi.org/10.5194/bg-19-1611-2022, https://doi.org/10.5194/bg-19-1611-2022, 2022
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Arctic permafrost ecosystems may release large amounts of carbon under warmer future climates and may therefore accelerate global climate change. Our study investigated how long-term grazing by large animals influenced ecosystem characteristics and carbon budgets at a Siberian permafrost site. Our results demonstrate that such management can contribute to stabilizing ecosystems to keep carbon in the ground, particularly through drying soils and reducing methane emissions.
Dong-Gill Kim, Ben Bond-Lamberty, Youngryel Ryu, Bumsuk Seo, and Dario Papale
Biogeosciences, 19, 1435–1450, https://doi.org/10.5194/bg-19-1435-2022, https://doi.org/10.5194/bg-19-1435-2022, 2022
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As carbon (C) and greenhouse gas (GHG) research has adopted appropriate technology and approach (AT&A), low-cost instruments, open-source software, and participatory research and their results were well accepted by scientific communities. In terms of cost, feasibility, and performance, the integration of low-cost and low-technology, participatory and networking-based research approaches can be AT&A for enhancing C and GHG research in developing countries.
Lutz Beckebanze, Zoé Rehder, David Holl, Christian Wille, Charlotta Mirbach, and Lars Kutzbach
Biogeosciences, 19, 1225–1244, https://doi.org/10.5194/bg-19-1225-2022, https://doi.org/10.5194/bg-19-1225-2022, 2022
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Arctic permafrost landscapes feature many water bodies. In contrast to the terrestrial parts of the landscape, the water bodies release carbon to the atmosphere. We compare carbon dioxide and methane fluxes from small water bodies to the surrounding tundra and find not accounting for the carbon dioxide emissions leads to an overestimation of the tundra uptake by 11 %. Consequently, changes in hydrology and water body distribution may substantially impact the overall carbon budget of the Arctic.
Brian Scott, Andrew H. Baldwin, and Stephanie A. Yarwood
Biogeosciences, 19, 1151–1164, https://doi.org/10.5194/bg-19-1151-2022, https://doi.org/10.5194/bg-19-1151-2022, 2022
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Carbon dioxide and methane contribute to global warming. What can we do? We can build wetlands: they store carbon dioxide and should cause global cooling. But when first built they produce excess methane. Eventually built wetlands will cause cooling, but it may take decades or even centuries. How we build wetlands matters. We show that a common practice, using organic matter, such as manure, can make a big difference whether or not the wetlands we build start global cooling within our lifetime.
Jan Knappe, Celia Somlai, and Laurence W. Gill
Biogeosciences, 19, 1067–1085, https://doi.org/10.5194/bg-19-1067-2022, https://doi.org/10.5194/bg-19-1067-2022, 2022
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Two domestic on-site wastewater treatment systems have been monitored for greenhouse gas (carbon dioxide, methane and nitrous oxide) emissions coming from the process units, soil and vent pipes. This has enabled the net greenhouse gas per person to be quantified for the first time, as well as the impact of pre-treatment on the effluent before being discharged to soil. These decentralised wastewater treatment systems serve approx. 20 % of the population in both Europe and the United States.
Yanan Zhao, Dennis Booge, Christa A. Marandino, Cathleen Schlundt, Astrid Bracher, Elliot L. Atlas, Jonathan Williams, and Hermann W. Bange
Biogeosciences, 19, 701–714, https://doi.org/10.5194/bg-19-701-2022, https://doi.org/10.5194/bg-19-701-2022, 2022
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We present here, for the first time, simultaneously measured dimethylsulfide (DMS) seawater concentrations and DMS atmospheric mole fractions from the Peruvian upwelling region during two cruises in December 2012 and October 2015. Our results indicate low oceanic DMS concentrations and atmospheric DMS molar fractions in surface waters and the atmosphere, respectively. In addition, the Peruvian upwelling region was identified as an insignificant source of DMS emissions during both periods.
Moussa Moustapha, Loris Deirmendjian, David Sebag, Jean-Jacques Braun, Stéphane Audry, Henriette Ateba Bessa, Thierry Adatte, Carole Causserand, Ibrahima Adamou, Benjamin Ngounou Ngatcha, and Frédéric Guérin
Biogeosciences, 19, 137–163, https://doi.org/10.5194/bg-19-137-2022, https://doi.org/10.5194/bg-19-137-2022, 2022
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We monitor the spatio-temporal variability of organic and inorganic carbon (C) species in the tropical Nyong River (Cameroon), across groundwater and increasing stream orders. We show the significant contribution of wetland as a C source for tropical rivers. Thus, ignoring the river–wetland connectivity might lead to the misrepresentation of C dynamics in tropical watersheds. Finally, total fluvial carbon losses might offset ~10 % of the net C sink estimated for the whole Nyong watershed.
Alexander J. Turner, Philipp Köhler, Troy S. Magney, Christian Frankenberg, Inez Fung, and Ronald C. Cohen
Biogeosciences, 18, 6579–6588, https://doi.org/10.5194/bg-18-6579-2021, https://doi.org/10.5194/bg-18-6579-2021, 2021
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This work builds a high-resolution estimate (500 m) of gross primary productivity (GPP) over the US using satellite measurements of solar-induced chlorophyll fluorescence (SIF) from the TROPOspheric Monitoring Instrument (TROPOMI) between 2018 and 2020. We identify ecosystem-specific scaling factors for estimating gross primary productivity (GPP) from TROPOMI SIF. Extreme precipitation events drive four regional GPP anomalies that account for 28 % of year-to-year GPP differences across the US.
Paul Laris, Moussa Koné, Fadiala Dembélé, Christine M. Rodrigue, Lilian Yang, Rebecca Jacobs, and Quincy Laris
Biogeosciences, 18, 6229–6244, https://doi.org/10.5194/bg-18-6229-2021, https://doi.org/10.5194/bg-18-6229-2021, 2021
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Savanna fires play a key role in the global carbon cycle because they release methane. Although it burns the most, there are few studies from West Africa. We conducted 36 experimental fires according to local practice to collect smoke samples. We found that fires set early in the season had higher methane emissions than those set later, and head fires had double the emissions of backfires. We conclude policies to reduce emissions will not have the desired effects if fire type is not considered.
Johan H. Scheller, Mikhail Mastepanov, Hanne H. Christiansen, and Torben R. Christensen
Biogeosciences, 18, 6093–6114, https://doi.org/10.5194/bg-18-6093-2021, https://doi.org/10.5194/bg-18-6093-2021, 2021
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Our study presents a time series of methane emissions in a high-Arctic-tundra landscape over 14 summers, which shows large variations between years. The methane emissions from the valley are expected to more than double in the late 21st century. This warming increases permafrost thaw, which could increase surface erosion in the valley. Increased erosion could offset some of the rise in methane fluxes from the valley, but this would require large-scale impacts on vegetated surfaces.
Patryk Łakomiec, Jutta Holst, Thomas Friborg, Patrick Crill, Niklas Rakos, Natascha Kljun, Per-Ola Olsson, Lars Eklundh, Andreas Persson, and Janne Rinne
Biogeosciences, 18, 5811–5830, https://doi.org/10.5194/bg-18-5811-2021, https://doi.org/10.5194/bg-18-5811-2021, 2021
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Methane emission from the subarctic mire with heterogeneous permafrost status was measured for the years 2014–2016. Lower methane emission was measured from the palsa mire sector while the thawing wet sector emitted more. Both sectors have a similar annual pattern with a gentle rise during spring and a decrease during autumn. The highest emission was observed in the late summer. Winter emissions were positive during the measurement period and have a significant impact on the annual budgets.
Balázs Grosz, Reinhard Well, Rene Dechow, Jan Reent Köster, Mohammad Ibrahim Khalil, Simone Merl, Andreas Rode, Bianca Ziehmer, Amanda Matson, and Hongxing He
Biogeosciences, 18, 5681–5697, https://doi.org/10.5194/bg-18-5681-2021, https://doi.org/10.5194/bg-18-5681-2021, 2021
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To assure quality predictions biogeochemical models must be current. We use data measured using novel incubation methods to test the denitrification sub-modules of three models. We aim to identify limitations in the denitrification modeling to inform next steps for development. Several areas are identified, most urgently improved denitrification control parameters and further testing with high-temporal-resolution datasets. Addressing these would significantly improve denitrification modeling.
Sarah Waldo, Jake J. Beaulieu, William Barnett, D. Adam Balz, Michael J. Vanni, Tanner Williamson, and John T. Walker
Biogeosciences, 18, 5291–5311, https://doi.org/10.5194/bg-18-5291-2021, https://doi.org/10.5194/bg-18-5291-2021, 2021
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Human-made reservoirs impact the carbon cycle. In particular, the breakdown of organic matter in reservoir sediments can result in large emissions of greenhouse gases (especially methane) to the atmosphere. This study takes an intensive look at the patterns in greenhouse gas emissions from a single reservoir in Ohio (United States) and the role of water temperature, precipitation, and algal blooms in emissions. We saw a "spring burst" of elevated emissions that challenged our assumptions.
Xinyu Liu, Xixi Lu, Ruihong Yu, Heyang Sun, Hao Xue, Zhen Qi, Zhengxu Cao, Zhuangzhuang Zhang, and Tingxi Liu
Biogeosciences, 18, 4855–4872, https://doi.org/10.5194/bg-18-4855-2021, https://doi.org/10.5194/bg-18-4855-2021, 2021
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Gradual riparian wetland drying is increasingly sensitive to global warming and contributes to climate change. We analyzed the emissions of CO2, CH4, and N2O from riparian wetlands in the Xilin River basin to understand the role of these ecosystems in greenhouse gas emissions. Our study showed that anthropogenic activities have extensively changed the hydrological characteristics of the riparian wetlands and might accelerate carbon loss, which could further affect greenhouse gas emissions.
Zhaohui Chen, Parvadha Suntharalingam, Andrew J. Watson, Ute Schuster, Jiang Zhu, and Ning Zeng
Biogeosciences, 18, 4549–4570, https://doi.org/10.5194/bg-18-4549-2021, https://doi.org/10.5194/bg-18-4549-2021, 2021
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As the global temperature continues to increase, carbon dioxide (CO2) is a major driver of this global warming. The increased CO2 is mainly caused by emissions from fossil fuel use and land use. At the same time, the ocean is a significant sink in the carbon cycle. The North Atlantic is a critical ocean region in reducing CO2 concentration. We estimate the CO2 uptake in this region based on a carbon inverse system and atmospheric CO2 observations.
Sirwan Yamulki, Jack Forster, Georgios Xenakis, Adam Ash, Jacqui Brunt, Mike Perks, and James I. L. Morison
Biogeosciences, 18, 4227–4241, https://doi.org/10.5194/bg-18-4227-2021, https://doi.org/10.5194/bg-18-4227-2021, 2021
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The effect of clear-felling on soil greenhouse gas (GHG) fluxes was assessed in a Sitka spruce forest. Measurements over 4 years showed that CO2, CH4, and N2O fluxes responded differently to clear-felling due to significant changes in soil biotic and abiotic factors and showed large variations between years. Over 3 years since felling, the soil GHG flux was reduced by 45% due to a much larger reduction in CO2 efflux than increases in N2O (up to 20%) and CH4 (changed from sink to source) fluxes.
Stefan Theodorus Johannes Weideveld, Weier Liu, Merit van den Berg, Leon Peter Maria Lamers, and Christian Fritz
Biogeosciences, 18, 3881–3902, https://doi.org/10.5194/bg-18-3881-2021, https://doi.org/10.5194/bg-18-3881-2021, 2021
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Raising the groundwater table (GWT) trough subsoil irrigation does not lead to a reduction of carbon emissions from drained peat meadows, even though there was a clear increase in the GWT during summer. Most likely, the largest part of the peat oxidation takes place in the top 70 cm of the soil, which stays above the GWT with the use of subsoil irrigation. We conclude that the use of subsoil irrigation is ineffective as a mitigation measure to sufficiently lower peat oxidation rates.
Yanming Gong, Ping Yue, Kaihui Li, Anwar Mohammat, and Yanyan Liu
Biogeosciences, 18, 3529–3537, https://doi.org/10.5194/bg-18-3529-2021, https://doi.org/10.5194/bg-18-3529-2021, 2021
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At present, data on the influence of asymmetric warming on the GHG flux on a temporal scale are scarce. GHG fluxes were measured using static chambers and a gas chromatograph. Our study showed that the effect of seasonally asymmetrical warming on CO2 flux was obvious, with the GHG flux being able to adapt to continuous warming. Warming in the non-growing season increased the temperature dependence of GHG flux.
Hella van Asperen, João Rafael Alves-Oliveira, Thorsten Warneke, Bruce Forsberg, Alessandro Carioca de Araújo, and Justus Notholt
Biogeosciences, 18, 2609–2625, https://doi.org/10.5194/bg-18-2609-2021, https://doi.org/10.5194/bg-18-2609-2021, 2021
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Termites are insects that are highly abundant in tropical ecosystems. It is known that termites emit CH4, an important greenhouse gas, but their absolute emission remains uncertain. In the Amazon rainforest, we measured CH4 emissions from termite nests and groups of termites. In addition, we tested a fast and non-destructive field method to estimate termite nest colony size. We found that termites play a significant role in an ecosystem's CH4 budget and probably emit more than currently assumed.
Genevieve L. Noyce and J. Patrick Megonigal
Biogeosciences, 18, 2449–2463, https://doi.org/10.5194/bg-18-2449-2021, https://doi.org/10.5194/bg-18-2449-2021, 2021
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Methane (CH4) is a potent greenhouse gas that contributes to global radiative forcing. A mechanistic understanding of how wetland CH4 cycling will respond to global warming is crucial for improving prognostic models. We present results from the first 4 years of a novel whole-ecosystem warming experiment in a coastal wetland, showing that warming increases CH4 emissions and identifying four potential mechanisms that can be added to future modeling efforts.
Yanan Zhao, Cathleen Schlundt, Dennis Booge, and Hermann W. Bange
Biogeosciences, 18, 2161–2179, https://doi.org/10.5194/bg-18-2161-2021, https://doi.org/10.5194/bg-18-2161-2021, 2021
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We present a unique and comprehensive time-series study of biogenic sulfur compounds in the southwestern Baltic Sea, from 2009 to 2018. Dimethyl sulfide is one of the key players regulating global climate change, as well as dimethylsulfoniopropionate and dimethyl sulfoxide. Their decadal trends did not follow increasing temperature but followed some algae group abundances at the Boknis Eck Time Series Station.
Ingeborg Bussmann, Irina Fedorova, Bennet Juhls, Pier Paul Overduin, and Matthias Winkel
Biogeosciences, 18, 2047–2061, https://doi.org/10.5194/bg-18-2047-2021, https://doi.org/10.5194/bg-18-2047-2021, 2021
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Arctic rivers, lakes, and bays are affected by a warming climate. We measured the amount and consumption of methane in waters from Siberia under ice cover and in open water. In the lake, methane concentrations under ice cover were much higher than in summer, and methane consumption was highest. The ice cover leads to higher methane concentration under ice. In a warmer Arctic, there will be more time with open water when methane is consumed by bacteria, and less methane will escape into the air.
Elisa Vainio, Olli Peltola, Ville Kasurinen, Antti-Jussi Kieloaho, Eeva-Stiina Tuittila, and Mari Pihlatie
Biogeosciences, 18, 2003–2025, https://doi.org/10.5194/bg-18-2003-2021, https://doi.org/10.5194/bg-18-2003-2021, 2021
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We studied forest floor methane exchange over an area of 10 ha in a boreal pine forest. The results demonstrate high spatial variability in soil moisture and consequently in the methane flux. We detected wet patches emitting high amounts of methane in the early summer; however, these patches turned to methane uptake in the autumn. We concluded that the small-scale spatial variability of the boreal forest methane flux highlights the importance of soil chamber placement in similar studies.
Matthias Koschorreck, Yves T. Prairie, Jihyeon Kim, and Rafael Marcé
Biogeosciences, 18, 1619–1627, https://doi.org/10.5194/bg-18-1619-2021, https://doi.org/10.5194/bg-18-1619-2021, 2021
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The concentration of carbon dioxide (CO2) in water samples is often measured using a gas chromatograph. Depending on the chemical composition of the water, this method can produce wrong results. We quantified the possible error and how it depends on water composition and the analytical procedure. We propose a method to correct wrong results by additionally analysing alkalinity in the samples. We provide an easily usable computer code to perform the correction calculations.
Cited articles
Angel, R., Matthies, D., and Conrad, R.: Activation of Methanogenesis in Arid
Biological Soil Crusts Despite the Presence of Oxygen, PLOS ONE, 6,
e20453, https://doi.org/10.1371/journal.pone.0020453, 2011.
Angle, J. C., Morin, T. H., Solden, L. M., Narrowe, A. B., Smith, G. J.,
Borton, M. A., Rey-Sanchez, C., Daly, R. A., Mirfenderesgi, G., Hoyt, D. W.,
Riley, W. J., Miller, C. S., Bohrer, G., and Wrighton, K. C.: Methanogenesis
in oxygenated soils is a substantial fraction of wetland methane emissions,
Nat. Commun., 8, 1567, https://doi.org/10.1038/s41467-017-01753-4, 2017.
Apprill, A., McNally, S., Parsons, R., and Weber, L.: Minor revision to V4
region SSU rRNA 806R gene primer greatly increases detection of SAR11
bacterioplankton, Aquat. Microb. Ecol., 75, 129–137,
https://doi.org/10.3354/ame01753, 2015.
Basiliko, N., Blodau, C., Roehm, C., Bengtson, P., and Moore, T. R.:
Regulation of decomposition and methane dynamics across natural,
commercially mined, and restored northern peatlands, Ecosystems, 10,
1148–1165, https://doi.org/10.1007/s10021-007-9083-2, 2007.
Basiliko, N., Henry, K., Gupta, V., Moore, T. R., Driscoll, B. T., and
Dunfield, P. F.: Controls on bacterial and archaeal community structure and
greenhouse gas production in natural, mined, and restored Canadian
peatlands, Front. Microbiol., 4, 215, https://doi.org/10.3389/fmicb.2013.00215, 2013.
Bohn, T. J., Lettenmaier, D. P., Sathulur, K., Bowling, L. C., Podest, E.,
McDonald, K. C., and Friborg, T.: Methane emissions from western Siberian
wetlands: heterogeneity and sensitivity to climate change, Environ. Res.
Lett., 2, 4, https://doi.org/10.1088/1748-9326/2/4/045015, 2007.
Bridgham, S. D. and Richardson, C. J.: Mechanisms controlling soil
respiration (CO2 and CH4) in southern peatlands, Soil Biol. Biochem.,
24, 1089–1099, https://doi.org/10.1016/0038-0717(92)90058-6, 1992.
Bridgham, S. D., Cadillo-Quiroz, H., Keller, J. K., and Zhuang, Q. L.:
Methane emissions from wetlands: biogeochemical, microbial, and modeling
perspectives from local to global scales, Glob. Change Biol., 19,
1325–1346, https://doi.org/10.1111/gcb.12131, 2013.
Cai, S. and Yu, Z.: Response of a warm temperate peatland to Holocene
climate change in northeastern Pennsylvania, Quaternary Res., 75, 531–540,
https://doi.org/10.1016/j.yqres.2011.01.003, 2011.
Caporaso, J. G., Kuczynski, J., Stombaugh, J., Bittinger, K., Bushman, F.
D., Costello, E. K., Fierer, N., Peña, A. G., Goodrich, J. K., Gordon,
J. I., Huttley, G. A., Kelley, S. T., Knights, D., Koenig, J. E., Ley, R.
E., Lozupone, C. A., McDonald, D., Muegge, B. D., Pirrung, M., Reeder, J.,
Sevinsky, J. R., Turnbaugh, P. J., Walters, W. A., Widmann, J., Yatsunenko,
T., Zaneveld, J., and Knight, R.: QIIME allows analysis of high-throughput
community sequencing data, Nat. Methods, 7, 335–336,
https://doi.org/10.1038/nmeth.f.303, 2010.
Chamberlain, S. D., Anthony, T. L., Silver, W. L., Eichelmann, E., Hemes, K.
S., Oikawa, P. Y., Sturtevant, C., Szutu, D. J., Verfaillie, J. G., and
Baldocchi, D. D.: Soil properties and sediment accretion modulate methane
fluxes from restored wetlands, Glob. Change Biol., 24, 4107–4121,
https://doi.org/10.1111/gcb.14124, 2018.
Chasar, L. S., Chanton, J. P., Glaser, P. H., and Siegel, D. I.: Methane
concentration and stable isotope distribution as evidence of rhizospheric
processes: Comparison of a fen and bog in the Glacial Lake Agassiz Peatland
complex, Ann. Bot., 86, 655–663, https://doi.org/10.1006/anbo.2000.1172, 2000.
Christen, A., Jassal, R. S., Black, T. A., Grant, N. J., Hawthorne, I.,
Johnson, M. S., Lee, S. C., and Merkens, M.: Summertime greenhouse gas fluxes
from an urban bog undergoing restoration through rewetting, Mires Peat, 17, 1–24,
https://doi.org/10.19189/MaP.2015.OMB.207, 2016.
Chu, H. S., Chen, J. Q., Gottgens, J. F., Ouyang, Z. T., John, R.,
Czajkowski, K., and Becker, R.: Net ecosystem methane and carbon dioxide
exchanges in a Lake Erie coastal marsh and a nearby cropland, J. Geophys.
Res.-Biogeo., 119, 722–740, https://doi.org/10.1002/2013jg002520, 2014.
Ciais, P., Gasser, T., Paris, J. D., Caldeira, K., Raupach, M. R., Canadell, J. G., Patwardhan, A., Friedlingstein, P., Piao, S. L., and Gitz, V.: Attributing the increase in atmospheric CO2 to emitters and absorbers, Nat. Clim. Change, 3, 926, 2013.
Colwell, S. R.: Characterization of Upland/Wetland Community Types: Changes to Flatiron Lake Bog over a 24-Year Period, The Ohio State University, available at: https://etd.ohiolink.edu/pg_10?0::NO:10:P10_ETD_SUBID:68741 (last access: 23 August 2019), 2009.
Crill, P. M., Bartlett, K. B., Harriss, R. C., Gorham, E., Verry, E. S.,
Sebacherl, D. I., Madsar, L., and Sanner, W.: Methane flux from minnesota
peatlands, Glob. Biogeochem. Cy., 2, 371–384,
https://doi.org/10.1029/GB002i004p00371, 1988.
Dean, J. F., Middelburg, J. J., Röckmann, T., Aerts, R., Blauw, L. G.,
Egger, M., Jetten, M. S. M., Jong, A. E. E. de, Meisel, O. H., Rasigraf, O.,
Slomp, C. P., in't Zandt, M. H., and Dolman, A. J.: Methane Feedbacks to the
Global Climate System in a Warmer World, Rev. Geophys., 56, 207–250,
https://doi.org/10.1002/2017RG000559, 2018.
Dedysh, S. N.: Cultivating Uncultured Bacteria from Northern Wetlands:
Knowledge Gained and Remaining Gaps, Front. Microbiol., 2, 184,
https://doi.org/10.3389/fmicb.2011.00184, 2011.
Dise, N. B.: Methane emission from minnesota peatlands – spatial and
seasonal variability, Glob. Biogeochem. Cy., 7, 123–142,
https://doi.org/10.1029/92gb02299, 1993.
Glatzel, S., Basiliko, N., and Moore, T.: Carbon dioxide and methane
production potentials of peats from natural, harvested, and restored sites,
eastern Quebec, Canada, Wetlands, 24, 261–267,
https://doi.org/10.1672/0277-5212(2004)024[0261:cdampp]2.0.co;2, 2004.
Godin, A., McLaughlin, J. W., Webster, K. L., Packalen, M., and Basiliko, N.:
Methane and methanogen community dynamics across a boreal peatland nutrient
gradient, Soil Biol. Biochem., 48, 96–105,
https://doi.org/10.1016/j.soilbio.2012.01.018, 2012.
Greenup, A. L., Bradford, M. A., McNamara, N. P., Ineson, P., and Lee, J. A.: The role of Eriophorum vaginatum in CH4 flux from an ombrotrophic peatland, Plant Soil, 227, 265–272, https://doi.org/10.1023/a:1026573727311, 2000.
Hatala, J. A., Detto, M., and Baldocchi, D. D.: Gross ecosystem
photosynthesis causes a diurnal pattern in methane emission from rice,
Geophys. Res. Lett., 39, L06409, https://doi.org/10.1029/2012gl051303, 2012.
Holgerson, M. A., Farr, E. R., and Raymond, P. A.: Gas transfer velocities in
small forested ponds, J. Geophys. Res.-Biogeo., 122, 1011–1021,
https://doi.org/10.1002/2016JG003734, 2017.
Hoyos-Santillan, J., Lomax, B. H., Large, D., Turner, B. L., Boom, A.,
Lopez, O. R., and Sjogersten, S.: Quality not quantity: Organic matter
composition controls of CO2 and CH4 fluxes in neotropical peat profiles,
Soil Biol. Biochem., 103, 86–96, https://doi.org/10.1016/j.soilbio.2016.08.017, 2016.
Kelly, C. A., Dise, N. B., and Martens, C. S.: Temporal variations in the
stable carbon isotopic composmon of methane emitted from minnesota
peatlands, Glob. Biogeochem. Cy., 6, 263–269, https://doi.org/10.1029/92gb01478,
1992.
Kettunen, A.: Connecting methane fluxes to vegetation cover and water table
fluctuations at microsite level: A modeling study, Glob. Biogeochem. Cy.,
17, 1051, https://doi.org/10.1029/2002gb001958, 2003.
Kim, J., Verma, S. B., and Billesbach, D. P.: Seasonal variation in methane
emission from a temperate Phragmites-dominated marsh: effect of growth stage
and plant-mediated transport, Glob. Change Biol., 5, 433–440,
https://doi.org/10.1046/j.1365-2486.1999.00237.x, 1999.
Kim, S. Y., Lee, S. H., Freeman, C., Fenner, N., and Kang, H.: Comparative
analysis of soil microbial communities and their responses to the short-term
drought in bog, fen, and riparian wetlands, Soil Biol. Biochem., 40,
2874–2880, https://doi.org/10.1016/j.soilbio.2008.08.004, 2008.
Kirschke, S., Bousquet, P., Ciais, P., Saunois, M., Canadell, J. G.,
Dlugokencky, E. J., Bergamaschi, P., Bergmann, D., Blake, D. R., Bruhwiler,
L., Cameron-Smith, P., Castaldi, S., Chevallier, F., Feng, L., Fraser, A.,
Heimann, M., Hodson, E. L., Houweling, S., Josse, B., Fraser, P. J.,
Krummel, P. B., Lamarque, J. F., Langenfelds, R. L., Le Quere, C., Naik, V.,
O'Doherty, S., Palmer, P. I., Pison, I., Plummer, D., Poulter, B., Prinn, R.
G., Rigby, M., Ringeval, B., Santini, M., Schmidt, M., Shindell, D. T.,
Simpson, I. J., Spahni, R., Steele, L. P., Strode, S. A., Sudo, K., Szopa,
S., van der Werf, G. R., Voulgarakis, A., van Weele, M., Weiss, R. F.,
Williams, J. E., and Zeng, G.: Three decades of global methane sources and
sinks, Nat. Geosci., 6, 813–823, https://doi.org/10.1038/ngeo1955, 2013.
Kostka, J. E., Weston, D. J., Glass, J. B., Lilleskov, E. A., Shaw, A. J.,
and Turetsky, M. R.: The Sphagnum microbiome: new insights from an ancient
plant lineage, New Phytol., 211, 57–64, https://doi.org/10.1111/nph.13993, 2016.
Kotsyurbenko, O. R., Chin, K. J., Glagolev, M. V., Stubner, S., Simankova,
M. V., Nozhevnikova, A. N., and Conrad, R.: Acetoclastic and hydrogenotrophic
methane production and methanogenic populations in an acidic West-Siberian
peat bog, Environ. Microbiol., 6, 1159–1173,
https://doi.org/10.1111/j.1462-2920.2004.00634.x, 2004.
Kuznetsova, A., Brockhoff, P. B., and Christensen, R. H. B.: lmerTest
Package: Tests in Linear Mixed Effects Models, J. Stat. Softw., 82,
1–26, https://doi.org/10.18637/jss.v082.i13, 2017.
Lai, D. Y. F.: Methane Dynamics in Northern Peatlands: A Review, Pedosphere,
19, 409–421, 2009.
Lai, D. Y. F., Moore, T. R., and Roulet, N. T.: Spatial and temporal
variations of methane flux measured by autochambers in a temperate
ombrotrophic peatland, J. Geophys. Res.-Biogeo., 119, 864–880,
https://doi.org/10.1002/2013jg002410, 2014.
Lansdown, J. M., Quay, P. D., and King, S. L.: CH4 production via CO2
reduction in a temperate bog: A source of 13C-depIeted CH4, Geochim.
Cosmochim. Ac., 56, 3493–3503, https://doi.org/10.1016/0016-7037(92)90393-W, 1992.
Lee, H. J., Kim, S. Y., Kim, P. J., Madsen, E. L., and Jeon, C. O.: Methane
emission and dynamics of methanotrophic and methanogenic communities in a
flooded rice field ecosystem, FEMS Microbiol. Ecol., 88, 195–212,
https://doi.org/10.1111/1574-6941.12282, 2014.
Le Mer, J. and Roger, P.: Production, oxidation, emission and consumption of
methane by soils: A review, Eur. J. Soil Biol., 37, 25–50,
https://doi.org/10.1016/s1164-5563(01)01067-6, 2001.
Lenth, R., Singmann, H., Love, J., Buerkner, P., and Herve, M.: emmeans:
Estimated Marginal Means, aka Least-Squares Means, available at:
https://CRAN.R-project.org/package=emmeans, last access: 24 December 2018.
Liu, Y. C. and Whitman, W. B.: Metabolic, phylogenetic, and ecological
diversity of the methanogenic archaea, in: Incredible Anaerobes: From
Physiology to Genomics to Fuels, vol. 1125, edited by: Wiegel, J.,
Maier, R. J., and Adams, M. W. W., pp. 171–189, 2008.
MacDonald, L. H., Paull, J. S., and Jaffe, P. R.: Enhanced semipermanent
dialysis samplers for long-term environmental monitoring in saturated
sediments, Environ. Monit. Assess., 185, 3613–3624,
https://doi.org/10.1007/s10661-012-2813-8, 2013.
Malhotra, A., Roulet, N. T., Wilson, P., Giroux-Bougard, X., and Harris, L.
I.: Ecohydrological feedbacks in peatlands: an empirical test of the
relationship among vegetation, microtopography and water table,
Ecohydrology, 9, 1346–1357, https://doi.org/10.1002/eco.1731, 2016.
McCalley, C. K., Woodcroft, B. J., Hodgkins, S. B., Wehr, R. A., Kim, E.-H.,
Mondav, R., Crill, P. M., Chanton, J. P., Rich, V. I., Tyson, G. W., and
Saleska, S. R.: Methane dynamics regulated by microbial community response
to permafrost thaw, Nature, 514, 478–481, https://doi.org/10.1038/nature13798,
2014.
Moore, P. D.: The future of cool temperate bogs, Environ. Conserv., 29,
3–20, https://doi.org/10.1017/s0376892902000024, 2002.
Moore, T. R. and Dalva, M.: The influence of temperature and water-table
position on carbon-dioxide and methane emissions from laboratory columns of
peatland soils, J. Soil Sci., 44, 651–664, 1993.
Morin, T. H., Bohrer, G., Naor-Azrieli, L., Mesi, S., Kenny, W. T., Mitsch,
W. J., and Schaefer, K. V. R.: The seasonal and diurnal dynamics of methane
flux at a created urban wetland, Ecol. Eng., 72, 74–83,
https://doi.org/10.1016/j.ecoleng.2014.02.002, 2014.
Morin, T. H., Bohrer, G., Stefanik, K. C., Rey-Sanchez, A. C., Matheny, A.
M., and Mitsch, W. J.: Combining eddy-covariance and chamber measurements to
determine the methane budget from a small, heterogeneous urban floodplain
wetland park, Agric. Forest Meteorol., 237, 160–170,
https://doi.org/10.1016/j.agrformet.2017.01.022, 2017.
Nadeau, D. F., Rousseau, A. N., Coursolle, C., Margolis, H. A., and Parlange,
M. B.: Summer methane fluxes from a boreal bog in northern Quebec, Canada,
using eddy covariance measurements, Atmos. Environ., 81, 464–474,
https://doi.org/10.1016/j.atmosenv.2013.09.044, 2013.
Nahlik, A. M. and Mitsch, W. J.: Methane Emissions From Created Riverine
Wetlands, Wetlands, 30, 783–793, https://doi.org/10.1007/s13157-010-0038-6, 2010.
Nelson, M. C., Morrison, H. G., Benjamino, J., Grim, S. L., and Graf, J.:
Analysis, Optimization and Verification of Illumina-Generated 16S rRNA Gene
Amplicon Surveys, PLOS ONE, 9, e94249, https://doi.org/10.1371/journal.pone.0094249,
2014.
Oleszczuk, R. and Truba, M.: The analysis of some physical properties of
drained peat-moorsh soil layers, Ann. Wars. Univ. Life Sci. 00 SGGW Land
Reclam., 45, 41–48, https://doi.org/10.2478/sggw-2013-0004, 2013.
Pangala, S. R., Moore, S., Hornibrook, E. R. C., and Gauci, V.: Trees are
major conduits for methane egress from tropical forested wetlands, New
Phytol., 197, 524–531, https://doi.org/10.1111/nph.12031, 2013.
Parada, A. E., Needham, D. M., and Fuhrman, J. A.: Every base matters:
assessing small subunit rRNA primers for marine microbiomes with mock
communities, time series and global field samples, Environ. Microbiol.,
18, 1403–1414, https://doi.org/10.1111/1462-2920.13023, 2016.
Pugh, C. A., Reed, D. E., Desai, A. R., and Sulman, B. N.: Wetland flux
controls: how does interacting water table levels and temperature influence
carbon dioxide and methane fluxes in northern Wisconsin?, Biogeochemistry,
137, 15–25, https://doi.org/10.1007/s10533-017-0414-x, 2018.
Raghoebarsing, A. A., Smolders, A. J. P., Schmid, M. C., Rijpstra, W. I. C.,
Wolters-Arts, M., Derksen, J., Jetten, M. S. M., Schouten, S., Damste, J. S.
S., Lamers, L. P. M., Roelofs, J. G. M., den Camp, H., and Strous, M.:
Methanotrophic symbionts provide carbon for photosynthesis in peat bogs,
Nature, 436, 1153–1156, https://doi.org/10.1038/nature03802, 2005.
R Development Core Team: R: A language and environment for statistical
computing., available at: http://www.R-project.org (last access: 7 January 2019), 2018.
Rey-Sanchez, A. C., Morin, T. H., Stefanik, K. C., Wrighton, K., and Bohrer,
G.: Determining total emissions and environmental drivers of methane flux in
a Lake Erie estuarine marsh, Ecol. Eng., 114, 7–15,
https://doi.org/10.1016/j.ecoleng.2017.06.042, 2018.
Schilder, J., Bastviken, D., Hardenbroek, M., and van and Heiri, O.:
Spatiotemporal patterns in methane flux and gas transfer velocity at low
wind speeds: Implications for upscaling studies on small lakes, J. Geophys.
Res.-Biogeo., 121, 1456–1467, https://doi.org/10.1002/2016JG003346, 2016.
Schneider, C. A., Rasband, W. S., and Eliceiri, K. W.: NIH Image to ImageJ:
25 years of image analysis, Nat. Methods, 9, 671–675,
https://doi.org/10.1038/nmeth.2089, 2012.
Segers, R.: Methane production and methane consumption: a review of
processes underlying wetland methane fluxes, Biogeochemistry, 41, 23–51,
https://doi.org/10.1023/a:1005929032764, 1998.
Sha, C., Mitsch, W. J., Mander, U., Lu, J. J., Batson, J., Zhang, L., and He,
W. S.: Methane emissions from freshwater riverine wetlands, Ecol. Eng.,
37, 16–24, https://doi.org/10.1016/j.ecoleng.2010.07.022, 2011.
Shannon, R. D. and White, J. R.: 3-year study of controls on methane
emissions from 2 Michigan peatlands, Biogeochemistry, 27, 35–60, 1994.
Smemo, K. A. and Yavitt, J. B.: Anaerobic oxidation of methane: an underappreciated aspect of methane cycling in peatland ecosystems?, Biogeosciences, 8, 779–793, https://doi.org/10.5194/bg-8-779-2011, 2011.
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.
Sundqvist, E., Crill, P., Molder, M., Vestin, P., and Lindroth, A.:
Atmospheric methane removal by boreal plants, Geophys. Res. Lett., 39, L21806,
https://doi.org/10.1029/2012gl053592, 2012.
Treat, C. C., Bubier, J. L., Varner, R. K., and Crill, P. M.: Timescale
dependence of environmental and plant-mediated controls on CH4 flux in a
temperate fen, J. Geophys. Res.-Biogeo., 112, G01014,
https://doi.org/10.1029/2006jg000210, 2007.
Turetsky, M. R., Kotowska, A., Bubier, J., Dise, N. B., Crill, P.,
Hornibrook, E. R. C., Minkkinen, K., Moore, T. R., Myers-Smith, I. H.,
Nykanen, H., Olefeldt, D., Rinne, J., Saarnio, S., Shurpali, N., Tuittila,
E. S., Waddington, J. M., White, J. R., Wickland, K. P., and Wilmking, M.: A
synthesis of methane emissions from 71 northern, temperate, and subtropical
wetlands, Glob. Change Biol., 20, 2183–2197, https://doi.org/10.1111/gcb.12580,
2014.
Updegraff, K., Pastor, J., Bridgham, S. D., and Johnston, C. A.:
Environmental and substrate controls over carbon and nitrogen mineralization
in northern wetlands, Ecol. Appl., 5, 151–163, https://doi.org/10.2307/1942060,
1995.
US EPA, O.: EPA Method 350.1: Determination of Ammonia Nitrogen by
Semi-Automated Colorimetry, US EPA, available at:
https://www.epa.gov/homeland-security-research/epa-method-3501-determination-ammonia-nitrogen-semi-automated-colorimetry
(last access: 5 March 2019), 2015a.
US EPA, O.: SW-846 Test Method 6010D: Inductively Coupled Plasma-Optical
Emission Spectrometry (ICP-OES), US EPA, available at:
https://www.epa.gov/hw-sw846/sw-846-test-method-6010d-inductively-coupled-plasma-optical-emission-spectrometry-icp-oes
(last access: 5 March 2019), 2015b.
Van der Nat, F., Middelburg, J. J., Van Meteren, D., and Wielemakers, A.:
Diel methane emission patterns from Scirpus lacustris and Phragmites
australis, Biogeochemistry, 41, 1–22, https://doi.org/10.1023/a:1005933100905, 1998.
Vitt, D. H. and Slack, N. G.: An analysis of the vegetation of Sphagnum-dominated
kettle-hole bogs in relation to environmental gradients, Can. J. Bot.,
53, 332–359, https://doi.org/10.1139/b75-042, 1975.
Waddington, J. M. and Day, S. M.: Methane emissions from a peatland
following restoration, J. Geophys. Res.-Biogeo., 112, 112,
https://doi.org/10.1029/2007jg000400, 2007.
Walters, W., Hyde, E. R., Berg-Lyons, D., Ackermann, G., Humphrey, G.,
Parada, A., Gilbert, J. A., Jansson, J. K., Caporaso, J. G., Fuhrman, J. A.,
Apprill, A., and Knight, R.: Improved Bacterial 16S rRNA Gene (V4 and V4-5)
and Fungal Internal Transcribed Spacer Marker Gene Primers for Microbial
Community Surveys, mSystems, 1, e00009-15, https://doi.org/10.1128/mSystems.00009-15,
2016.
Wang, Z. P., Delaune, R. D., Masscheleyn, P. H., and Patrick, W. H.: Soil
redox and ph effects on methane production in a flooded rice soil, Soil Sci.
Soc. Am. J., 57, 382–385, 1993.
Wanninkhof, R.: Relationship between wind speed and gas exchange over the
ocean revisited, Limnol. Oceanogr.-Methods, 12, 351–362,
https://doi.org/10.4319/lom.2014.12.351, 2014.
White, J. R., Shannon, R. D., Weltzin, J. F., Pastor, J., and Bridgham, S.
D.: Effects of soil warming and drying on methane cycling in a northern
peatland mesocosm study, J. Geophys. Res.-Biogeo., 113, G00A06,
https://doi.org/10.1029/2007jg000609, 2008.
Whiting, G. J. and Chanton, J. P.: Plant-dependent CH4 emission in a
subarctic canadian fen, Glob. Biogeochem. Cy., 6, 225–231,
https://doi.org/10.1029/926b00710, 1992.
Short summary
It is estimated that natural wetlands emit approximately 30 % of all the methane released to the atmosphere; yet these estimates are highly uncertain due to the complexity of biological, chemical, and physical processes controlling methane emissions. In this study, we explore how some of these key processes drive methane emissions in a temperate peat bog. We show that the composition of microbial methane cyclers in the upper portion of the peat drives the velocity of methane release to the air.
It is estimated that natural wetlands emit approximately 30 % of all the methane released to the...
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