Articles | Volume 7, issue 9
https://doi.org/10.5194/bg-7-2711-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-7-2711-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Greenhouse gas balances of managed peatlands in the Nordic countries – present knowledge and gaps
M. Maljanen
Agricultural University of Iceland, Keldnaholt, 112 Reykjavik, Iceland
University of Eastern Finland, Kuopio campus, Department of Environmental Science, P.O. Box 1627, 70211 Kuopio, Finland
B. D. Sigurdsson
Agricultural University of Iceland, Keldnaholt, 112 Reykjavik, Iceland
J. Guðmundsson
Agricultural University of Iceland, Keldnaholt, 112 Reykjavik, Iceland
H. Óskarsson
Agricultural University of Iceland, Keldnaholt, 112 Reykjavik, Iceland
J. T. Huttunen
deceased
P. J. Martikainen
University of Eastern Finland, Kuopio campus, Department of Environmental Science, P.O. Box 1627, 70211 Kuopio, Finland
Related subject area
Biogeochemistry: Greenhouse Gases
Meteorological responses of carbon dioxide and methane fluxes in the terrestrial and aquatic ecosystems of a subarctic landscape
Carbon emission and export from the Ket River, western Siberia
Evaluation of wetland CH4 in the Joint UK Land Environment Simulator (JULES) land surface model using satellite observations
Greenhouse gas fluxes in mangrove forest soil in an Amazon estuary
Temporal patterns and drivers of CO2 emission from dry sediments in a groyne field of a large river
Effects of water table level and nitrogen deposition on methane and nitrous oxide emissions in an alpine peatland
Highest methane concentrations in an Arctic river linked to local terrestrial inputs
Seasonal study of the small-scale variability in dissolved methane in the western Kiel Bight (Baltic Sea) during the European heatwave in 2018
Trace gas fluxes from tidal salt marsh soils: implications for carbon–sulfur biogeochemistry
Spatial and temporal variation in δ13C values of methane emitted from a hemiboreal mire: methanogenesis, methanotrophy, and hysteresis
Intercomparison of methods to estimate gross primary production based on CO2 and COS flux measurements
Lateral carbon export has low impact on the net ecosystem carbon balance of a polygonal tundra catchment
The effect of static chamber base on N2O flux in drip irrigation
Controls on autotrophic and heterotrophic respiration in an ombrotrophic bog
Episodic N2O emissions following tillage of a legume–grass cover crop mixture
Variation in CO2 and CH4 fluxes among land cover types in heterogeneous Arctic tundra in northeastern Siberia
Response of vegetation and carbon fluxes to brown lemming herbivory in northern Alaska
Sources of nitrous oxide and the fate of mineral nitrogen in subarctic permafrost peat soils
Data-based estimates of interannual sea–air CO2 flux variations 1957–2020 and their relation to environmental drivers
Evaluating alternative ebullition models for predicting peatland methane emission and its pathways via data–model fusion
Excess soil moisture and fresh carbon input are prerequisites for methane production in podzolic soil
Low biodegradability of particulate organic carbon mobilized from thaw slumps on the Peel Plateau, NT, and possible chemosynthesis and sorption effects
Grazing enhances carbon cycling but reduces methane emission during peak growing season in the Siberian Pleistocene Park tundra site
Ideas and perspectives: Enhancing research and monitoring of carbon pools and land-to-atmosphere greenhouse gases exchange in developing countries
Ignoring carbon emissions from thermokarst ponds results in overestimation of tundra net carbon uptake
Quantification of potential methane emissions associated with organic matter amendments following oxic-soil inundation
Assessing the spatial and temporal variability of greenhouse gas emissions from different configurations of on-site wastewater treatment system using discrete and continuous gas flux measurement
Dimethylated sulfur compounds in the Peruvian upwelling system
Partitioning carbon sources between wetland and well-drained ecosystems to a tropical first-order stream – implications for carbon cycling at the watershed scale (Nyong, Cameroon)
Extreme events driving year-to-year differences in gross primary productivity across the US
Methane gas emissions from savanna fires: what analysis of local burning regimes in a working West African landscape tell us
Methane in Zackenberg Valley, NE Greenland: multidecadal growing season fluxes of a high-Arctic tundra
Field-scale CH4 emission at a subarctic mire with heterogeneous permafrost thaw status
Evaluation of denitrification and decomposition from three biogeochemical models using laboratory measurements of N2, N2O and CO2
Temporal trends in methane emissions from a small eutrophic reservoir: the key role of a spring burst
Greenhouse gases emissions from riparian wetlands: an example from the Inner Mongolia grassland region in China
Variability of North Atlantic CO2 fluxes for the 2000–2017 period estimated from atmospheric inverse analyses
Effects of clear-fell harvesting on soil CO2, CH4, and N2O fluxes in an upland Sitka spruce stand in England
Conventional subsoil irrigation techniques do not lower carbon emissions from drained peat meadows
Different responses of ecosystem CO2 and N2O emissions and CH4 uptake to seasonally asymmetric warming in an alpine grassland of the Tianshan
The role of termite CH4 emissions on the ecosystem scale: a case study in the Amazon rainforest
Biogeochemical and plant trait mechanisms drive enhanced methane emissions in response to whole-ecosystem warming
A decade of dimethyl sulfide (DMS), dimethylsulfoniopropionate (DMSP) and dimethyl sulfoxide (DMSO) measurements in the southwestern Baltic Sea
Methane dynamics in three different Siberian water bodies under winter and summer conditions
Topography-based statistical modelling reveals high spatial variability and seasonal emission patches in forest floor methane flux
Technical note: CO2 is not like CH4 – limits of and corrections to the headspace method to analyse pCO2 in fresh water
Comparison of greenhouse gas fluxes from tropical forests and oil palm plantations on mineral soil
Are there memory effects on greenhouse gas emissions (CO2, N2O and CH4) following grassland restoration?
Intraseasonal variability of greenhouse gas emission factors from biomass burning in the Brazilian Cerrado
Evaluating stream CO2 outgassing via drifting and anchored flux chambers in a controlled flume experiment
Lauri Heiskanen, Juha-Pekka Tuovinen, Henriikka Vekuri, Aleksi Räsänen, Tarmo Virtanen, Sari Juutinen, Annalea Lohila, Juha Mikola, and Mika Aurela
Biogeosciences, 20, 545–572, https://doi.org/10.5194/bg-20-545-2023, https://doi.org/10.5194/bg-20-545-2023, 2023
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We measured and modelled the CO2 and CH4 fluxes of the terrestrial and aquatic ecosystems of the subarctic landscape for 2 years. The landscape was an annual CO2 sink and a CH4 source. The forest had the largest contribution to the landscape-level CO2 sink and the peatland to the CH4 emissions. The lakes released 24 % of the annual net C uptake of the landscape back to the atmosphere. The C fluxes were affected most by the rainy peak growing season of 2017 and the drought event in July 2018.
Artem G. Lim, Ivan V. Krickov, Sergey N. Vorobyev, Mikhail A. Korets, Sergey Kopysov, Liudmila S. Shirokova, Jan Karlsson, and Oleg S. Pokrovsky
Biogeosciences, 19, 5859–5877, https://doi.org/10.5194/bg-19-5859-2022, https://doi.org/10.5194/bg-19-5859-2022, 2022
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In order to quantify C transport and emission and main environmental factors controlling the C cycle in Siberian rivers, we investigated the largest tributary of the Ob River, the Ket River basin, by measuring spatial and seasonal variations in carbon CO2 and CH4 concentrations and emissions together with hydrochemical analyses. The obtained results are useful for large-scale modeling of C emission and export fluxes from permafrost-free boreal rivers of an underrepresented region of the world.
Robert J. Parker, Chris Wilson, Edward Comyn-Platt, Garry Hayman, Toby R. Marthews, A. Anthony Bloom, Mark F. Lunt, Nicola Gedney, Simon J. Dadson, Joe McNorton, Neil Humpage, Hartmut Boesch, Martyn P. Chipperfield, Paul I. Palmer, and Dai Yamazaki
Biogeosciences, 19, 5779–5805, https://doi.org/10.5194/bg-19-5779-2022, https://doi.org/10.5194/bg-19-5779-2022, 2022
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Wetlands are the largest natural source of methane, one of the most important climate gases. The JULES land surface model simulates these emissions. We use satellite data to evaluate how well JULES reproduces the methane seasonal cycle over different tropical wetlands. It performs well for most regions; however, it struggles for some African wetlands influenced heavily by river flooding. We explain the reasons for these deficiencies and highlight how future development will improve these areas.
Saúl Edgardo Martínez Castellón, José Henrique Cattanio, José Francisco Berrêdo, Marcelo Rollnic, Maria de Lourdes Ruivo, and Carlos Noriega
Biogeosciences, 19, 5483–5497, https://doi.org/10.5194/bg-19-5483-2022, https://doi.org/10.5194/bg-19-5483-2022, 2022
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We seek to understand the influence of climatic seasonality and microtopography on CO2 and CH4 fluxes in an Amazonian mangrove. Topography and seasonality had a contrasting influence when comparing the two gas fluxes: CO2 fluxes were greater in high topography in the dry period, and CH4 fluxes were greater in the rainy season in low topography. Only CO2 fluxes were correlated with soil organic matter, the proportion of carbon and nitrogen, and redox potential.
Matthias Koschorreck, Klaus Holger Knorr, and Lelaina Teichert
Biogeosciences, 19, 5221–5236, https://doi.org/10.5194/bg-19-5221-2022, https://doi.org/10.5194/bg-19-5221-2022, 2022
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At low water levels, parts of the bottom of rivers fall dry. These beaches or mudflats emit the greenhouse gas carbon dioxide (CO2) to the atmosphere. We found that those emissions are caused by microbial reactions in the sediment and that they change with time. Emissions were influenced by many factors like temperature, water level, rain, plants, and light.
Wantong Zhang, Zhengyi Hu, Joachim Audet, Thomas A. Davidson, Enze Kang, Xiaoming Kang, Yong Li, Xiaodong Zhang, and Jinzhi Wang
Biogeosciences, 19, 5187–5197, https://doi.org/10.5194/bg-19-5187-2022, https://doi.org/10.5194/bg-19-5187-2022, 2022
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This work focused on the CH4 and N2O emissions from alpine peatlands in response to the interactive effects of altered water table levels and increased nitrogen deposition. Across the 2-year mesocosm experiment, nitrogen deposition showed nonlinear effects on CH4 emissions and linear effects on N2O emissions, and these N effects were associated with the water table levels. Our results imply the future scenario of strengthened CH4 and N2O emissions from an alpine peatland.
Karel Castro-Morales, Anna Canning, Sophie Arzberger, Will A. Overholt, Kirsten Küsel, Olaf Kolle, Mathias Göckede, Nikita Zimov, and Arne Körtzinger
Biogeosciences, 19, 5059–5077, https://doi.org/10.5194/bg-19-5059-2022, https://doi.org/10.5194/bg-19-5059-2022, 2022
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Permafrost thaw releases methane that can be emitted into the atmosphere or transported by Arctic rivers. Methane measurements are lacking in large Arctic river regions. In the Kolyma River (northeast Siberia), we measured dissolved methane to map its distribution with great spatial detail. The river’s edge and river junctions had the highest methane concentrations compared to other river areas. Microbial communities in the river showed that the river’s methane likely is from the adjacent land.
Sonja Gindorf, Hermann W. Bange, Dennis Booge, and Annette Kock
Biogeosciences, 19, 4993–5006, https://doi.org/10.5194/bg-19-4993-2022, https://doi.org/10.5194/bg-19-4993-2022, 2022
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Methane is a climate-relevant greenhouse gas which is emitted to the atmosphere from coastal areas such as the Baltic Sea. We measured the methane concentration in the water column of the western Kiel Bight. Methane concentrations were higher in September than in June. We found no relationship between the 2018 European heatwave and methane concentrations. Our results show that the methane distribution in the water column is strongly affected by temporal and spatial variabilities.
Margaret Capooci and Rodrigo Vargas
Biogeosciences, 19, 4655–4670, https://doi.org/10.5194/bg-19-4655-2022, https://doi.org/10.5194/bg-19-4655-2022, 2022
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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.
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.
Julia Drewer, Melissa M. Leduning, Robert I. Griffiths, Tim Goodall, Peter E. Levy, Nicholas Cowan, Edward Comynn-Platt, Garry Hayman, Justin Sentian, Noreen Majalap, and Ute M. Skiba
Biogeosciences, 18, 1559–1575, https://doi.org/10.5194/bg-18-1559-2021, https://doi.org/10.5194/bg-18-1559-2021, 2021
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In Southeast Asia, oil palm plantations have largely replaced tropical forests. The impact of this shift in land use on greenhouse gas fluxes and soil microbial communities remains uncertain. We have found emission rates of the potent greenhouse gas nitrous oxide on mineral soil to be higher from oil palm plantations than logged forest over a 2-year study and concluded that emissions have increased over the last 42 years in Sabah, with the proportion of emissions from plantations increasing.
Lutz Merbold, Charlotte Decock, Werner Eugster, Kathrin Fuchs, Benjamin Wolf, Nina Buchmann, and Lukas Hörtnagl
Biogeosciences, 18, 1481–1498, https://doi.org/10.5194/bg-18-1481-2021, https://doi.org/10.5194/bg-18-1481-2021, 2021
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Our study investigated the exchange of the three major greenhouse gases (GHGs) over a temperate grassland prior to and after restoration through tillage in central Switzerland. Our results show that irregular management events, such as tillage, have considerable effects on GHG emissions in the year of tillage while leading to enhanced carbon uptake and similar nitrogen losses via nitrous oxide in the years following tillage to those observed prior to tillage.
Roland Vernooij, Marcos Giongo, Marco Assis Borges, Máximo Menezes Costa, Ana Carolina Sena Barradas, and Guido R. van der Werf
Biogeosciences, 18, 1375–1393, https://doi.org/10.5194/bg-18-1375-2021, https://doi.org/10.5194/bg-18-1375-2021, 2021
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We used drones to measure greenhouse gas emission factors from fires in the Brazilian Cerrado. We compared early-dry-season management fires and late-dry-season fires to determine if fire management can be a tool for abating emissions.
Although we found some evidence of increased CO and CH4 emission factors, the seasonal effect was smaller than that found in previous studies. For N2O, the third most important greenhouse gas, we found opposite trends in grass- and shrub-dominated areas.
Filippo Vingiani, Nicola Durighetto, Marcus Klaus, Jakob Schelker, Thierry Labasque, and Gianluca Botter
Biogeosciences, 18, 1223–1240, https://doi.org/10.5194/bg-18-1223-2021, https://doi.org/10.5194/bg-18-1223-2021, 2021
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Flexible foil chamber design and the anchored deployment might be useful techniques to enhance the robustness and the accuracy of CO2 measurements in low-order streams. Moreover, the study demonstrates the value of analytical and numerical techniques for the estimation of gas exchange velocities. These results may contribute to the development of novel procedures for chamber data analysis which might improve the robustness and reliability of chamber-based CO2 measurements in first-order streams.
Cited articles
Åberg, J., Bergström, A.-K., Algesten, G., Söderback, K., and Jansson, M.: A comparison of the carbon balances of a natural lake (L. Östräsket) and a hydroelectric reseroir (L. Skinnmuddselet) in nothern Sweden, Water Res., 38, 531–538, 2004.
Ahlholm, U. and Silvola, J.: Turvetuotannon ja turpeen käytön osuus maapallon ja Suomen hiilitaseessa, Ministry of Trade and Industry, Ser. D, 183, 1–57, 1990.
Alm, J., Talanov, A., Saarnio, S., Silvola, J., Ikkonen, E., Aaltonen, H., Nykänen, H., and Martikainen, P. J.: Reconstruction of the carbon balance for microsites in a boreal oligotrophic pine fen, Oecologia, 110, 423–431, 1997.
Alm, J., Schulman, L., Walden, J., Nykänen, H., Martikainen, P. J., and Silvola, J.: Carbon balance of a boreal bog during a year with an exceptionally dry summer, Ecology, 80, 161–174, 1999a.
Alm, J., Saarnio, S., Nykänen, H., Silvola, J., and Martikainen, P. J.: Winter CO2, CH4 and N2O fluxes on some natural and drained boreal peatlands, Biogeochemistry, 44, 163–186, 1999b.
Alm, J., Shurpali, N. J., Minkkinen, K., Aro, L., Hytönen, J., Laurila, T., Lohila, A., Maljanen, M., Mäkiranta, P., Penttilä, T., Saarnio, S., Silvan, N., Tuittila, E.-S. and Laine, J.: Emission factors and their uncertainty for the exchange of CO2, CH4 and N2O in Finnish managed peatlands, Boreal Environ. Res., 12, 191–209, 2007.
Ambus, P.: Nitrous oxide production by denitrification and nitrification in temperate forest, grassland and agricultural soils, Eur. J. Soil Sci., 49, 495–502, 1998.
Ambus, P., Jensen, J. M., Priemé, A., Pilegaard, K., and Kjøller, A.: Assessment of CH4 and N2O fluxes in a Danish beech (Fagus sylvatica) forest and an adjacent N-fertilised barley (Hordeum vulgare) field: effects of sewage sludge amendments, Nutr. Cycl. Agroecosys., 60, 15–21, 2001.
Aurela, M., Laurila, T., Tuovinen, J.-P.: The timing of snow melt controls the annual CO2 balance in a subarctic fen, Geophys. Res. Lett., 31, L16119, https://doi.org/10.1029/2004GL020315, 2004.
Aurela, M., Riutta, T., Laurila, T., Tuovinen, J.-P., Vesala, T., Tuittila, E.-S., Rinne, J., Haapanala, S., and Laine, J.: CO2 exchange of a sedge fen in southern Finland – the impact of a drought period, Tellus B, 59, 826–837, 2007.
Bäckstrand, K., Crill, P. M., Jackowicz-Korczyñski, M., Mastepanov, M., Christensen, T. R., and Bastviken, D.: Annual carbon gas budget for a subarctic peatland, Northern Sweden, Biogeosciences, 7, 95–108, https://doi.org/10.5194/bg-7-95-2010, 2010.
Baldocchi, D., Hicks, B., and Meyers, T.: Measuring biosphere-atmosphere exchanges of biologically related gases with micrometeorological methods, Ecology, 69, 1331–1340, 1988.
Berglund, Ö. and Berglund, K.: Odlad organogen jord i Sverige 2003: Areal och grödfördelning uppskattad med hjälp av digitaliserade databaser, Rapport 7 (Sveriges lantbruksuniversitet, Institutionen för markvetenskap, Avdelningen för hydroteknik), http://pub-epsilon.slu.se/197/, last access: 13 September 2010, 2008.
Berglund, Ö. and Berglund, K.: Distribution and cultivation intensity of agricultural peat and gyttja soils in Sweden and estimation of greenhouse gas emissions from cultivated peat soils, Geoderma, 154, 173–180 https://doi.org/10.1016/j.geoderma.2008.11.035, 2010.
Bergström, A.-K., Algesten, G., Sobek, S., Tranvik, L., and Jansson, M.: Emission of CO2 from hydroelectric reservoirs in northern Sweden, Arch. Hydrobiol., 159, 25–42, 2004.
Björnsson, H., Sveinbjörnsdóttir, Á. E., Daníelsdóttir, A. K., Snorrason, Á., Sigur{\dh}sson, B. D., Sveinbjörnsson, E., Viggósson, G., Sigurjónsson, J., Baldursson, S., {\TH}orvaldsdóttir, S., and Jónsson, T.: Hnattrænar loftslagsbreytingar og áhrif {\th}eirra á \'{I}slandi – Sk\'{y}rsla vísindanefndar um loftslagsbreytingar, Ministry for the Environment, Reykjavik, 121, 2008.
Bodaly, R. A., Beaty, K. G., Hendzel, L. H., Majewski, A. R., Paterson, M. J., Rolfhus, K. R., Penn, A. F., St. Louis, V. L., Hall, B. D., Matthews, C. J. D., Cherewyk, K. A., Mailman, M., Hurley, J. P., Schiff, S. L., and Venkiteswaran, J. J.: Experimenting with hydroelectric reservoirs, Environ. Sci. Technol., 38, 346A–352A, 2004.
Chatskikh, D. and Olesen, J.: Soil tillage enhanced CO2 and N2O emissions from loamy sand soil under spring barley, Soil Till. Res., 97, 5–18, 2007.
Clement, R. J., Verma, S. B., and Verry, E. S.: Relating chamber measurements to eddy correlation measurements of methane flux, J. Geophys. Res., 100, 21047–21056, 1995.
Djurhuus, S., Krogh, L., and Greve, M. H.: Estimates of the carbon stocks in Danish mires, Icel. Agric. Sci., 18, 11–20, 2005.
Duchemin, É., Lucotte, M., Canuel, R., and Chamberland, A.: Production of the greenhouse gases CH4 and CO2 by hydroelectric reservoirs of the boreal region, Global Biogeochem. Cy., 9, 529–540, 1995.
Duchemin, É., Lucotte, M., Canuel, R., and Soumis, N.: First assessment of methane and carbon dioxide emissions from shallow and deep zones of boreal reservoirs upon ice break-up, Lake Reserv. Manage., 11, 9–19, 2006.
Eriksson, J., Nilsson, I., and Simonsson, M.: Wiklanders marklära, Studentliteratur, Lund, Sweden, 42–50, 2005.
Flechard, C. R., Ambus, P., Skiba, U., Rees, R. M., Hensen, A., van Amstel, A., van den Pol-van Dasselaar, A., Soussana, J.-F., Jones, M., Clifton-Brown, J., Raschi, A., Horvath, L., Neftel, A., Jocher, M., Ammann, C., Leifeld, J., Fuhrer, J., Calanca, P., Thalman, E., Pilegaard, K., Di Marco, C., Campbell, C., Nemitz, E., Hargreaves, K. J., Levy, P. E., Ball, B. C., Jones, S. K., van de Bulk, W. C. M., Groot, T., Blom, M., Domingues, R., Kasper, G., Allard, V., Ceschia, E., Cellier, P., Laville, P., Henault, C., Bizouard, F., Abdalla, M., Williams, M., Baronti, S., Berretti, F., and Grosz, B.: Effects of climate and management intensity on nitrous oxide emissions in grassland systems across Europe, Agr. Ecosyst. Environ., 121, 135–152, 2007.
Gar{\dh}arsson, A., Magnússon, B., Thorleifsson, E. Ó., Óskarsson, H., Hilmarsson, J. Ó., Lund, S., Thráinsson, N. Á., and Baldursson, T.: Endurheimt votlendis 1996–2006, Report by the Icelandic Ministry for Agriculture on wetland restoration in the period 1996–2006, Landbúna{\dh}arrá{\dh}uneyti{\dh}, Reykjavík, 27 p., 2006.
Gorham, E.: Northern peatlands: Role in the carbon cycle and probable responses to climatic warming, Ecol. Appl., 1, 182–195, 1991.
Grønlund, A., Sveistrup, T. E., Søvik, A. K., Rasse, D. P., and Kløve, B. : Degradation of cultivated peat soils in Norway based on field scale CO2, N2O and CH4 emission measurements, Arch. Agron. Soil Sci., 52, 149–159, 2006.
Grønlund, A., Hauge, A., Hovde, A., and Rasse, D. P.: Carbon loss estimates from cultivated peat soils in Norway: a comparison of three methods, Nutr. Cy. Agroecos., 81, 157–167, 2008.
Gu{\dh}mundsson, J. and Óskarsson, H.: Summaries of GHG measurement studies. UNESCO/IHA Greenhouse Gas Research Project, Measurement Specification Workshop, London, UK, 12–14 November, 2008.
Guerin, F., Abril, G., Serça, D., Delon, C., Richard, S., Delmas, R., Tremblay, A., and Varfalvy, L.: Gas transfer velocities of CO2 and CH4 in a tropical reservoir and its river downstream, J. Mar. Syst., 66, 161–172, 2006.
Haapala, J. K., Mörsky, S. K., Saarnio, S., Rinnan, R., Suokanerva, H., Kyrö, E., Latola, K., Martikanen, P. J., Holopainen, T., and Silvola, J.: Carbon dioxide balance of a fen ecosystem in northern Finland under elevated UV-B radiation, Global Change Biol., 15, 943–954, 2009.
Hånell, B.: Torvtäckta marker, dikning och sumpskogar i Sverige, Skogsfakta, inventering och ekonomi (Sveriges lantbruksuniversitet) nr 22, 1990.
Harby, A., Brakstad, O. G., and Sundt, H.: Greenhouse gas (GHG) emissions from hydropower reservoirs, Net emission rates calculated for Follsjø reservoirs, Project Memo. SINTEF Energy Research, Trondheim, Norway, 12 p., 2006.
Hargreaves, K. J., Milne, R., and Cannell, M. G. R.: Carbon balance of afforested peatland in Scotland, Forestry, 76, 299–317, 2003.
Hellsten, S. K., Virtanen, M. O., Nenonen, O. S., Kinnunen, K. A., and Riihimäki, J. M.: Relative importance of internal sources of phosphorus and organic matter in northern Finnish reservoirs, Water Sci. Technol., 28, 85–94, 1993.
Hjertestedt, H.:. De organogena odlingsjordarnas beskaffenhet i olika län med avseende på torvslag, förmultningsgrad och reaktion samt innehåll av kalk och kväve, kali och fosforsyra, organisk substans, seskvioxider och svavelsyra, Svenska Vall- och Mosskulturföreningens Kvartalsskrift, 8, 255–277, 1946.
Höper, H., Augustin, J., Cagampan, J. P., Drösler, M., Lundin, L., Moors, E., Vasander, H., Waddington, J. M., and Wilson, D.: Restoration of peatlands and greehouse gas balances, in: Peatlands and Climate Change, edited by: Starck, M., International Peat Society, Saarijärvi, Finland, 182–210, 2008.
Huttunen, J., Nykänen, H., Turunen, J., Nenonen, O., and Martikainen, P. J.: Fluxes of nitrous oxide on natural peatlands in Vuotos, an area projected for a hydroelectric reservoir in northern Finland, Suo, 53, 87–96, 2002a.
Huttunen, J. T., Väisänen, T. S., Hellsten, S. K., Heikkinen, M., Nykänen, H., Jungner, H., Niskanen, A., Virtanen, M. O., Lindqvist, O. V., Nenonen, O. S., and Martikainen, P. J.: Fluxes of CH4, CO2, and N2O in hydroelectric reservoirs Lokka and Porttipahta in the northern boreal zone in Finland, Global Biogeochem. Cy., 16, 1003, https://doi.org/10.1029/2000GB001316, 2002b.
Huttunen, J. T., Nykänen, H., Martikainen, P. J., and Nieminen, M.: Fluxes of nitrous oxide and methane from drained peatlands following forest clear-felling in southern Finland, Plant Soil, 255, 457–462, 2003.
Huttunen, J. T. and Martikainen, P. J.: Long-term effects of boreal reservoirs on the landscape-atmosphere N2O exchange, Verh. Internat. Verein. Limnol., 29, 607–611, 2005a.
Huttunen, J. T. and Martikainen, P. J.: Long-term net methane release from Finnish hydro reservoirs, in: Global warming and Hydroelectric Reservoirs, edited by: Santos, M. A. and Rosa, L. P., Proceedings of International Seminar on Greenhouse Fluxes from Hydro Reservoirs and Workshop on Modeling Greenhouse Gas Emissions from Reservoir at Watershed Level, Rio de Janeiro, Brazil, COPPE/UFRJ and Electrobrás, 8–12 August 2005, 125–135, 2005b.
Houel, S., Louchouarn, P., Lucotte, M., Canuel, R., and Ghaleb, B.: Translocation of soil organic matter following reservoir impoundment in boreal systems: Implications for in situ productivity, Limnol. Ocean., 51, 1497–1513, 2006.
Hyvönen, N. P., Huttunen, J. T., Shurpali, N. J., Tavi, N. M., Repo, M. E., and Martikainen, P. J.: Fluxes of nitrous oxide and methane on an abandoned peat extraction site: Effect of reed canary grass cultivation, Bioresource Technol., 100, 4723–4730, 2009.
Janzen, H. H.: Carbon cycling in earth systems – a soil science perspective, Agr. Ecosyst. Environ., 104, 399–417, 2004.
Kanerva, T., Regina, K., Rämö, K., Ojanperä, K., and Manninen, S.: Fluxes of N2O, CH4 and CO2 in a meadow ecosystem exposed to elevated ozone and carbon dioxide from three years, Environ. Pollut., 145, 818–828, 2007.
Kasimir Klemedtsson, Å., Weslien, P., and Klemedtsson, L.: Methane and nitrous oxide fluxes from a farmed Swedish Histosol, Eur. J. Soil Sci., 60, 321–331, 2009.
Kasimir Klemedtsson, Å and Klemedtsson, L.: Methane uptake in Swedish forest soil in relation to liming and extra N-deposition, Biol. Fert. Soils, 25, 296–301, 1997.
Kasimir Klemedtsson, Å., Klemedtsson, L., Berglund, K., Martikainen, P. J., Silvola, J., and Oenema, O.: Greenhouse gas emissions from farmed organic soils: a review, Soil Use Manage., 13, 245–250, 1997.
Keller, M. and Stallard, R. F.: Methane emission by bubbling from Gatun Lake, Panama, J. Geophys. Res., 99, 8307–8319, 1994.
Kelly, C. A., Rudd, J. W. M., Bodaly, R. A., Roulet, N. P., St. Louis, V. L., Heyes, A., Moore, T. R., Schiff, S., Aravena, R., Scott, K. J., Dyck, B., Harris, R., Warner, B., and Edwards, G.: Increases in fluxes of greenhouse gases and methyl mercury following flooding of an experimental reservoir, Environ. Sci. Technol., 31, 1334–1344, 1994.
Kemenes, A., Forsberg, B. R., and Melack, J. M.: Methane release below a tropical hydroelectric dam, Geophys. Res. Lett., 34, L12809, https://doi.org/10.1029/2007GL029479, 2007.
Kivimäki, S., Yli-Petäys, M., and Tuittila, E.-S.: Carbon sink function of sedge and Sphagnum patches in a restored cut-away peatland: increased functional diversity leads to higher production, Appl. Ecol., 45, 921–929, https://doi.org/10.1111/j.1365-2664.2008.01458.x, 2008.
Klemedtsson, L., Jansson, P.-E., Gustafsson, D., Karlberg, L., Weslien, P., von Arnold, K., Ernfors, M., Langvall, O., and Lindroth, A.: Bayesian calibration method used to elucidate carbon turnover in forest on drained organic soil, Biogeochemistry, 89, 61–79, https://doi.org/10.1007/s10533-007-9169-0, 2007.
Klemedtsson, L., von Arnold, K., Weslien, P., and Gundersen, P.: Soil CN ratio as a scalar parameter to predict nitrous oxide emissions, Global Change Biol., 11, 1142–1147, 2005.
Klemedtsson, L., Kasimir Klemedtsson, Å., Moldan, F., and Weslien, P.: Nitrous oxide emission from Swedish forest soils in relation to liming and simulated increased N-deposition, Biol. Fert. Soils, 25, 290–295, 1997.
Kløve, B., Sveistrup, T. E., and Hauge, A.: Leaching of nutrients and emission of greenhouse gases from peatland cultivation at Bodin, Northern Norway, Geoderma, 154, 219–232, 2010.
Komulainen, V.-M., Nykänen, H., Martikainen, P. J., and Laine, J.: Short-term effect of restoration on vegetation change and methane emissions from peatlands drained for forestry in southern Finland, Can. J. For. Res., 28, 402–411, 1998.
Komulainen, V.-M., Tuittila, E. S., Vasander, H., and Laine, J.: Restoration of drained peatlands in southern Finland: initial effects on vegetation change and CO2 balance, J Appl. Ecol., 36, 634–648, 1999.
Koponen, H. T., Flöjt, L., and Martikainen, P. J.: Nitrous oxide emissions from agricultural soils at low temperatures: a laboratory microcosm study, Soil Biol. Biochem., 36, 757–766, 2004.
Kroon, P. S., Hensen, A., van den Bulk, W. C. M., Jongejan, P. A. C., and Vermeulen, A. T.: The importance of reducing the systematic error due to non-linearity in N2O flux measurements by static chambers, Nutr. Cy. Agroecosys., 82, 175–186, 2008.
Kutzbach, L., Schneider, J., Sachs, T., Giebels, M., Nykänen, H., Shurpali, N. J., Martikainen, P. J., Alm, J., and Wilmking, M.: CO2 flux determination by closed-chamber methods can be seriously biased by inappropriate application of linear regression, Biogeosciences, 4, 1005–1025, https://doi.org/10.5194/bg-4-1005-2007, 2007.
Lagergren, F., Lindroth, A., Dellwik, E., Ibrom, A., Landkreijer, H., Launiainen, S., Mölder, M., Kolari, P., Pilegaard, K., and Vesala, T.: Biophysical controls on CO2 fluxes of three Northern forests based on long-term eddy covariance data, Tellus B, 60, 143–152, 2008.
Laine, J., Minkkinen, K., Sinisalo, J., Savolainen, I., and Martikainen, P. J.: Greenhouse Impact of a mire after drainage for forestry, in: Northern Forested Wetlands, Ecology and Management, edited by: Trettin, C. C., Jurgensen, M. F., Grigal, D. F., Gale, M. R., and Jeglum, J. K., CRC Lewis Publishers, Boca Raton, USA, 437–447, 1996.
Laurila, T., Lohila, A., Aurela, M., Tuovinen, J.-P., Thum, T., Aro, L., Laine, J., Penttilä, T., Minkkinen, K., Riutta, T., Rinne, J., Pihlatie, M., and Vesala, T.: Ecosystem-level carbon sink measurements on forested peatlands, in: Greenhouse Impacts of the Use of Peat and Peatlands in Finland, edited by: Sarkkola, S., Ministry of Agriculture and Forestry, 11a/2007, 38–40, 2007.
Le Mer, J. and Roger, P.: Production, oxidation, emission and consumption of methane by soils: A review, Eur. J. Soil Biol., 37, 25–50, 2001.
Liikanen, A., Huttunen, J. T., Karjalainen, S. M., Heikkinen, K., Väisänen, T. S., Nykänen, H., and Martikainen, P. J.: Temporal and seasonal changes in greenhouse gas emissions from a constructed wetland purifying peat mining runoff waters, Ecol. Eng., 26, 241–251, 2006.
Lindroth, A., Grelle, A., and Moren, A.-S.: Long-term measurements of boreal forest carbon balance reveal large temperature sensitivity, Global Change Biol., 4, 443–450, 1998.
Lindroth, A., Klemedtsson, L., Grelle, A., Weslien, P., and Langwell, O.: Measurement of net ecosystem exchange, productivity and respiration in three spruce forests in Sweden shows unexpectedly large soil carbon losses, Biogeochemistry, 89, 43–60, 2007.
Lohila, A., Aurela, M., Regina, K., and Laurila, T.: Soil and ecosystem respiration in agricultural fields: effect of soil and crop type, Plant Soil, 251, 303–317, 2003.
Lohila, A., Aurela, M., Tuovinen, J.-P., and Laurila, T.: Annual CO2 exchange of a peat field growing spring barley or perennial forage, J. Geophys. Res., 109, D18116, https://doi.org/10.1029/2004JD004715, 2004.
Lohila, A., Laurila, T., Aro, L., Aurela, M., Tuovinen, J.-P., Laine, J., and Minkkinen, K.: Carbon dioxide exchange above a 30-year-old Scots pine plantation established on organic-soil cropland, Boreal Environ. Res., 12, 141–157, 2007a.
Lohila, A., Aurela, M., Regina, K., Tuovinen, J.-P., and Laurila, T.: Wintertime CO2 exchange in a boreal agricultural peat soil, Tellus B, 59, 860–873, 2007b
Lund, M., Lindroth, A., Christiansen, T. R., and Ström, L.: Annual CO2 balance of a temperate bog, Tellus B, 59, 804–811, 2007.
Mäkiranta, P., Hytönen, J., Aro, L., Maljanen, M., Pihlatie, M., Potila, H., Shurpali, N. J., Laine, J., Lohila, A., Martikainen, P. J., and Minkkinen, K.: Soil greenhouse gas emissions from afforested organic soil croplands and peat extraction peatlands, Boreal Environ. Res., 12, 159–175, 2007.
Maljanen, M., Martikainen, P. J., Walden, J., and Silvola, J.: CO2 exchange in an organic field growing barley or grass in eastern Finland, Global Change Biol., 7, 679–692, 2001a.
Maljanen, M., Hytönen, J., and Martikainen, P. J.: Fluxes of N2O, CH4 and CO2 on afforested boreal agricultural soils, Plant Soil, 231, 113–121, 2001b.
Maljanen, M., Liikanen, A., Silvola, J., and Martikainen, P. J.: Methane fluxes on agricultural and forested boreal organic soils, Soil Use Manage., 19, 73–79, 2003a.
Maljanen, M., Liikanen, A., Silvola, J., and Martikainen, P. J.: Nitrous oxide emissions from boreal organic soil under different land-use, Soil Biol. Biochem., 35, 689–700, 2003b.
Maljanen, M., Liikanen, A., Silvola, J., and Martikainen, P. J.: Measuring N2O emissions from organic soils by closed chamber or soil/snow N2O gradient methods, Eur. J. Soil Sci., 54, 625–631, 2003c.
Maljanen, M., Komulainen, V.-M., Hytönen, J., Martikainen, P. J., and Laine, J.: Carbon dioxide, nitrous oxide and methane dynamics in boreal organic agricultural soils with different soil management, Soil Biol. Biochem., 36, 1801–1808, 2004.
Maljanen, M., Nykänen, H., Moilanen, M., and Martikainen, P. J.: Greenhouse gas fluxes of coniferous forest floors affected by wood ash fertilization, Forest Ecol. Manag., 237, 143–149, 2006a.
Maljanen, M., Jokinen, H., Saari, A., Strömmer, R., and Martikainen, P. J.: Methane and nitrous oxide fluxes, and carbon dioxide production in soil of boreal forest fertilized with wood ash and nitrogen, Soil Use Manage., 22, 151–157, 2006b.
Maljanen, M., Hytönen, J., Mäkiranta, P., Alm, J., Minkkinen, K., Laine, J., and Martikainen, P. J.: Greenhouse gas emissions from cultivated and abandoned organic croplands in Finland, Boreal Environ. Res., 12, 133–140, 2007a.
Maljanen, M., Kohonen, A.-R., Virkajärvi, P., and Martikainen, P. J.: Fluxes and production of N2O, CO2 and CH4 in boreal agricultural soil during winter as affected by snow cover, Tellus B, 59, 853–859, 2007b.
Maljanen, M., Virkajärvi, P., Hytönen, J., Öquist, M., Sparrman, T., and Martikainen, P. J.: Nitrous oxide production in boreal soils with variable organic matter content at low temperature - snow manipulation experiment, Biogeosciences, 6, 2461–2473, https://doi.org/10.5194/bg-6-2461-2009, 2009.
Maljanen, M., Hytönen, J., and Martikainen, P. J.: Cold season nitrous oxide dynamics in a drained boreal peatland differ depending on land use practise, Can. J. For. Res., 40, 565–572, 2010a.
Maljanen, M., Alm, J., Martikainen, P. J., and Repo, T.: Expanded soil frost resulting from reduced snow cover increases nitrous oxide emissions from boreal forest soil, Boreal Environ. Res., 15, 34–42, 2010b.
Markkanen, T., Rannik, Ü., Keronen, P., Suni, T., and Vesala, T.: Eddy covariance fluxes over a boreal Scots pine forest, Boreal Environ. Res., 6, 65–78, 2001.
Martikainen, P. J., Nykänen, H., Crill, P., and Silvola, J.: The effect of changing water table on methane fluxes at two Finnish mire sites, Suo, 43, 237–240, 1992.
Martikainen, P. J., Nykänen, H., Crill, P., and Silvola, J.: Effect of a lowered water table on nitrous oxide fluxes from northern peatlands, Nature, 366, 51–53, 1993.
Martikainen, P. J., Nykänen, H., Alm, J., and Silvola, J.: Change in fluxes of carbon dioxide, methane and nitrous oxide due to forest drainage of mire sites of different trophy, Plant Soil, 168, 571–577, 1995a.
Martikainen, P. J., Nykänen, H., Regina, K., Lehtonen, M., and Silvola, J.: Methane fluxes in a drained and forested peatland treated with different nitrogen compounds, in: Northern Peatlands in Global Climatic Change, edited by: Laiho, R., Laine, J., and Vasander, H., Proceedings of the International Workshop Held in Hyytiälä, Finland, Helsinki, 105–109, 1995b.
Ministry for the Environment: Iceland's Climate Change Strategy, 37, http://eng.umhverfisraduneyti.is/media/PDF_skrar/Stefnumorkun_i_loftslagsmalum_enlokagerd.pdf, last access: 30 August 2008, 2007.
Minkkinen, K., Laine, J., Nykänen, H., and Martikainen, P. J.: Importance of drainage ditches in emissions of methane from mires drained for forestry, Can. J. For. Res., 27, 949–952, 1997.
Minkkinen, K., Laine, J., and Hökkä, H.: Tree stand development and carbon sequestration in drained peatland stands in Finland – a simulation study, Silva Fenn., 35, 55–69, 2001.
Minkkinen, K., Penttilä, T., and Laine, J.: Tree stand volume as a scalar for methane fluxes in forestry-drained peatlands in Finland, Boreal Environ. Res., 12, 127–132, 2007.
Minkkinen, K. and Laine, J.: Long-term effect of forest drainage on the peat carbon stores of pine mires in Finland, Can. J. For. Res., 28, 1267–1275, 1998.
Myllys, M.: Agriculture on peatlands, in: Peatlands in Finland, edited by: Vasander, H., Finnish Peatland Society, Helsinki, Finland, 1996.
Myllys, M. and Sinkkonen, M.: Viljeltyjen turve-ja multamaiden pinta-ala ja alueellinen jakauma Suomessa, Suo, 55, 53–60, 2004.
Nielsen, O.-K., Lyck, E., Mikkelsen, M. H., Hoffmann, L., Gyldenkærne, S., Winther, M., Nielsen, M., Fauser, P., Thomsen, M., Plejdrup, M. S., Albrektsen, R., Hjelgaard, K., Vesterdal, L., Møller, I. S., and Baunbæk, L.: Denmark's National Inventory Report 2009 Emission Inventories 1990–2007 – Submitted under the United Nations Framework Convention on Climate Change, National Environmental Research Institute and Aarhus University, 2009.
Nilsson, M., Sagerfors, J., Buffan, I., Laudon, H., Eriksson, T., Grelle, A., Klemedtsson, L,. Weslien, P., and Lindroth, A.: Contemporary carbon accumulation in a boreal oligotrophic minerogenic mire – a significant sink after accounting for all C-fluxes, Global Change Biol., 14, 2317–2332, 2008.
NN: Mótaka og móm\'{y}rar, 2. Grein í Lesbók Morgunbla{\dh}sins, 31. október 1965, Morgunbla{\dh}i{\dh}, 35. tölubl, 1965.
Norwegian Pollution Control Authority: Greenhouse Gas Emission 1990–2007, National Inventory Report 2009, TA 2507, Norway, 2009.
Nykänen, H., Alm, J., Lång, K., Silvola, J., and Martikainen, P. J.: Emissions of CH4, N2O and CO2 from a virgin fen and a fen drained for grassland in Finland, J. Biogeogr., 22, 351–357, 1995.
Nykänen, H., Silvola, J., Alm, J., and Martikainen, P. J.: Fluxes of greenhouse gases CH4, CO2 and N2O on some peat mining areas in Finland, in: Northern Peatlands in Global Climatic Change, edited by: Laiho, R., Laine, J., and Vasander, H., Proceedings of the International Workshop Held in Hyytiälä, Finland, Publication of the Academy of Finland, Helsinki, 1/96, 141–147, 1996.
Nykänen, H., Alm, J., Silvola, J., Tolonen, K., and Martikainen, P. J.: Methane fluxes on boreal peatlands of different fertility and the effect of long term experimental lowering of the water table on flux rates, Global Biogeochem. Cy., 12, 53–69, 1998.
Nykänen, H., Heikkinen, J. E. P., Pirinen, L., Tiilikainen, K., and Martikainen, P. J.: Annual CO2 exchange and CH4 fluxes on a subarctic palsa mire during climatically different years, Global Biogeochem. Cy., 17, 1018, https://doi.org/10.1029/2002GB001861, 2003.
Óskarsson, H.: Icelandic Peatlands: Effects of Draining on Trace Gas Release. PhD Dissertation, Institute of Ecology, University of Georgia, Athens, Georgia, USA, 1998.
Óskarsson, H. and Gu{\dh}mundsson, J.: Gró{\dh}urhúsaáhrif uppistö{\dh}ulóna; Rannsóknir vi{\dh} Gilsárlón 2003–2006, Greenhouse gas emission from hydroreservoirs; Results from Gilsárlón 2003–2006, Landsvirkjun, LV-2008/028, 142, 2008a.
Óskarsson, H. and Gu{\dh}mundsson, J.: Methane emissions of a hydroelectric reservoir in northern Iceland, in: Greenhouse gases and aerosols: Interactions between northern ecosystems and climate, Conference given by the NECC and BACCI Nordic Centres of Excellence, Reykjavik, Iceland, 16–18 June, 2008b.
Paavilainen, E. and Päivänen, J.: Peatland Forestry, Ecology and Principles, Ecological Studies 111, Springer-Verlag, Berlin, Germany, 248 pp., 1995.
Petersen, H., Lundblad, M., Gu{\dh}mundsson, J., Pingoud, K., Gyldenkaerne, S., Hylen, G., and Tuomainen, T.: Enhanced incentives for mitigation efforts in the Land Use, Land Use Change and Forestry sector in the next global climate change agreement, Nordic Council of Ministers report, TemaNord 553, 2009.
Petersen, S. O., Regina, K., Pöllinger, A., Rigler, E., Valli, L., Yamulki, S., Esala, M., Fabbri, C., Syväsalo, E., and Vinther, F. P.: Nitrous oxide emissions from organic and conventional crop rotations in five European countries, Agr. Ecosyst. Environ., 112, 200–206, 2006.
Petersen, S. O.: Nitrous oxide emissions from manure and inorganic fertilizers applied to spring barley, J. Environ. Qual., 28, 1610–1618, 1999.
Petrone, R. M., Waddington, J. M., and Price, J.: Ecosystem-scale flux of CO2 from a restored vacuum harvested peatland, Wetlands Ecol. Manag., 11, 419–432, 2003.
Perälä, P., Kapuinen, P., Esala, M., Tyynelä, S., and Regina, K.: Influence of slurry and mineral fertilizer application techniques on N2O and CH4 fluxes from a barley field in southern Finland, Agr. Ecosyst. Environ., 117, 71–78, 2006.
Pihlatie, M., Rinne, J., Lohila, A., Laurila, T., Aro, L., and Vesala, T.: Nitrous oxide emissions from an afforested peat field using eddy covariance and enclosure techniques, in: Proceedings of 12th International Peat Congress, edited by: Päivänen, J., Tampere, Finland, 6–11 June 2004, Vol. 2, 1010–1014, 2004.
Pihlatie, M., Rinne, J., Ambus, P., Pilegaard, K., Dorsey, J. R., Rannik, Ü., Markkanen, T., Launiainen, S., and Vesala, T.: Nitrous oxide emissions from a beech forest floor measured by eddy covariance and soil enclosure techniques, Biogeosciences, 2, 377–387, https://doi.org/10.5194/bg-2-377-2005, 2005.
Pihlatie, M., Pumpanen, J., Rinne, J., Ilvesniemi, H., Simojoki, A., Hari, P., and Vesala, T.: Gas concentration driven fluxes of nitrous oxide and carbon dioxide in boreal forest soil, Tellus B, 59, 458–469, 2007.
Pihlatie, M. K., Kiese, R., Brüggemann, N., Butterbach-Bahl, K., Kieloaho, A.-J., Laurila, T., Lohila, A., Mammarella, I., Minkkinen, K., Penttilä, T., Schönborn, J., and Vesala, T.: Greenhouse gas fluxes in a drained peatland forest during spring frost-thaw event, Biogeosciences, 7, 1715–1727, https://doi.org/10.5194/bg-7-1715-2010, 2010.
Pilegaard, K., Mikkelsen, T. N., Beier, C., Jensen, N. O., Ambus, P., and Ro-Poulsen, H.: Field measurements of atmosphere-biosphere interactions in a Danish beech forest, Boreal Environ. Res., 8, 315–333, 2003.
Pilegaard, K., Skiba, U., Ambus, P., Beier, C., Brüggemann, N., Butterbach-Bahl, K., Dick, J., Dorsey, J., Duyzer, J., Gallagher, M., Gasche, R., Horvath, L., Kitzler, B., Leip, A., Pihlatie, M. K., Rosenkranz, P., Seufert, G., Vesala, T., Westrate, H., and Zechmeister-Boltenstern, S.: Factors controlling regional differences in forest soil emission of nitrogen oxides (NO and N2O), Biogeosciences, 3, 651–661, https://doi.org/10.5194/bg-3-651-2006, 2006.
Post, W. M., Emanuel, W. R., Zinke, P. J., and Stangenberger, A. G.: Soil carbon pools and world life zones, Nature, 298, 156–159, 1982.
Priemé, A. and Christensen, S.: Natural perturbations, drying-wetting and freezing-thawing cycles, and the emission of nitrous oxide, carbon dioxide and methane from farmed organic soils, Soil Biol. Biochem., 33, 2083–2091, 2001.
Regina, K., Nykänen, H., Silvola, J., and Martikainen, P. J.: Fluxes of nitrous oxide from boreal peatlands as affected by peatland type, water table level and nitrification capacity, Biogeochemistry, 35, 401–418, 1996.
Regina, K., Nykänen, H., Maljanen, M., Silvola, J., and Martikainen, P. J.: Emissions of N2O and NO and net nitrogen mineralization in a boreal forested peatland treated with different nitrogen compounds, Can. J. For. Res., 28, 132–140, 1998.
Regina, K., Syväsalo, E., Hannukkala, A., and Esala, M.: Fluxes of N2O from farmed peat soils in Finland, Eur. J. Soil Sci., 55, 591–599, 2004.
Regina, K., Pihlatie, M., Esala, M., and Alakukku, L.: Methane fluxes on boreal arable soils, Agr. Ecosyst. Environ., 119, 346–352, 2007.
Repo, M., Susiluoto, S., Lind, S. E., Jokinen, S., Elsakov, V., Biasi, C., Virtanen, T., and Martikainen, P. J.: Large N2O emissions from cryoturbated peat soil in tundra, Nat. Geosci., 2, 189–192, https://doi.org/10.1038/NGEO434, 2009.
Rochette, P. and Eriksen-Hamel, N. S.: Chamber measurements of soil nitrous oxide flux: Are absolute values reliable, Soil Sci. Soc. Am. J., 72, 331–342, 2008.
Roehm, C. and Tremblay, A.: Role of turbines in the carbon dioxide emissions from two boreal reservoirs, Québec, Canada, J. Geophys. Res., 111, D24102, https://doi.org/10.1029/2006JD007292, 2006.
Saari, A., Heiskanen, J., and Martikainen, P. J.: Effect of the organic horizon on methane oxidation and uptake in soil of a boreal Scots pine forest, FEMS Microbiol. Ecol., 26, 245–255, 1998.
Saari, A., Smolander, A., and Martikainen, P. J.: Methane consumption in a frequently nitrogen-fertilized and limed spruce forest soil after clear-cutting, Soil Use Manage., 20, 65–73, 2004.
Saari, A., Smolander, A., and Martikainen, P. J.: Production of N2O in a repeatedly nitrogen- fertilized and limed spruce forest soil after clear cutting, in: Maaperän vuorovaikutukset, III Maaperätieteiden päivät, edited by: Siimes, K., Makkonen, K., Pietikäinen, J., Mattila, P., Penttinen, S., Esala, M., Helsinki, 13.–14 January 2005, Pro Terra No. 22, 75–76, 2005.
Saari, P., Saarnio, S., Kukkonen, J. V. K., Akkanen, J., Heinonen, J., Saari, V., and Alm, J.: DOC and N2O dynamics in upland and peatland forest soils after clear-cutting and soil preparation, Biogeochemistry, 94, 217–231, https://doi.org/10.1007/s10533-009-9320-1, 2009a.
Saari, P., Saarnio, S., Kukkonen, J. V. K., Akkanen, J., and Alm, J.: Are peatland forestry buffers hot spots of N2O emission?, in: 9th Finnish Conference of Environmental Sciences, edited by: Vakkilainen, K. and Pukkila, V., Lahti 14–15 May 2009, Finnish Society for Environmental Sciences, Markprint Oy, Lahti, 153–156, 2009b.
Saarnio, S., Morero, M., Shurpali, N. J., Tuittila, E.-S., Mäkilä, M., and Alm, J.: Annual CO2 and CH4 fluxes of pristine boreal mires as a background for the lifecycle analyses of peat energy, Boreal Environ. Res., 12, 101–113, 2007.
Sagerfors, J., Lindroth, A., Grelle, A., Klemedtsson, L., Weslien, P., and Nilsson, M.: Annual CO2 exchange between a nutrient poor, minerotrophic boreal mire and the atmosphere, J. Geophys. Res., 113, G01001, https://doi.org/10.1029/2006JG000306, 2008.
SCB, (Statistiska centralbyrån): Torv 2003, Produktion, användning, miljöeffekter, Statistiska meddelanden MI 25 SM 0401, 32 pp., 2004.
SCB, (Statistiska centralbyrån): Torv 2007, Produktion, användning, miljöeffekter, Statistiska meddelanden MI 25 SM 0801, 33 pp., 2008.
Schrier-Uijl, A.-P., Veraart, A. J., Leffelaar, P. A., Berendse, F., and Veenendaal, E. M.: Release of CO2 and CH4 from lakes and drainage ditches in temperate wetlands, Biogeochemistry, in pess, https://doi.org/10.1007/s10533-010-9440-7, 2010.
Shurpali, N. J., Hyvönen, N., Huttunen, J. T., Clement, R., Reichestein, M., Nykänen, H., Biasi, C., and Martikainen, P. J.: Cultivation of perennial grass for bioenergy use on a boreal organic soil – carbon sink or source?, Global Change Biol. Bioenergy, 1, 35–50, https://doi.org/10.1111/j.1757.2009.01003.x, 2009.
Shurpali, N. J., Hyvönen, N. P., Huttunen, J. T., Biasi, C., Nykänen, H., Pekkarinen, N., and Martikainen, P. J.: Bare soil and reed canary grass ecosystem respiration in peat extraction sites in Eastern Finland, Tellus B, 60, 200–209, 2008.
Shurpali, N. J., Verma, S. B., Kim, J., and Arkebauer, T. J.: Carbon dioxide exchange in a peatland ecosystem, J. Geophys. Res.-Atmos., 100, 14319–14326, 1995.
Silvan, N., Regina, K., Kitunen, V., Vasander, H., and Laine, J.: Gaseous nitrogen loss from a restored peatland buffer zone, Soil Biol. Biochem., 34, 721–728, 2002.
Silvan, N., Tuittila, E.-S., Kitunen, V., Vasander, H., and Laine, J.: Nitrate uptake by Eriophorum vaginatum controls N2O production in a restored peatland, Soil Biol. Biochem., 37, 1519–1526, 2005.
Sikström, U., Björk, R. G., Ring, E., Ernfors, M., Jacobson, S., Nilsson, M., and Klemedtsson, L.: Tillförsel av aska i skog på dikad torvmark i södra Sverige, Effekter på skogsproduktion, flöden av växthusgaser, torvegenskaper, markvegetation och grundvattenkemi. VÄRMEFORSK Service AB, Stockholm, 75 pp., 2009.
Soini, P., Riutta, T., Yli-Petäys, M., and Vasander, H.: Comparison of vegetation and CO2 dynamics between restored cut-away peatland and a pristine fen: Evaluation of the restoration success, Restor. Ecol., in press, https://doi.org/10.1111/j.1526-100X.2009.00520.x., 2009.
Solomon, S., Qin, D., Manning, M., Alley, R. B., Berntsen, T., Bindoff, N. L., Chen, A., Chisthaisong, A., Gregory, J. M., Hegerl, G. C., Heimann, M., Hewitson, B., Hoskins, B. J., Foos, F., Jouel, J., Kattsov, V., Lohmann, U., Maysuno, T., Molina, M., Nicholls, N., Overpack, J., Raga, G., Ramaswamy, V., Ren, J., Rusticucci, M., Sommerville, R., Stocker, T. F., Whetton, P., Wood, R. A., and Wratt, D. : Technical summary, in: Climate Change 2007: The physical Science Basis, Contribution of Working Group I to the fourth Assessment Report of the Intergovernmental Panel on Climate Change, 2007.
Soumis, N., Duchemin, E., Canuel, R., and Lucotte, M.: Greenhouse gas emissions from reservoirs of the western United States, Global Biogeochem. Cy., 18, GB3022, https://doi.org/2003GB002197, 2004.
Soussana, J. F., Allard, V., Pilegaard, K., Ambus, P., Amman, C., Campbell, C., Ceschia, E., Clifton-Brown, J., Czobel, S., Domingues, R., Flechard, C., Fuhrer, J., Hensen, A., Horvath, L., Jones, M., Kasper, G., Martin, C., Nagy, Z., Neftel, A., Raschi, A., Baronti, S., Rees, R. M., Skiba, U., Stefani, P., Manca, G., Sutton, M., Tubaf, Z., and Valentini, R.: Full accounting of the greenhouse gas (CO2, N2O, CH4) budget of nine European grassland sites, Agr. Ecosyst. Environ., 121, 121–134, 2007.
Starck, M.: Peatlands and Climate Change, International Peat Society, Saarijärven offset Oy, Finland, 223 pp., 2008.
Struwe, S. and Kjøller, A. : Potential for N2O production from beech (Fagus silvaticus) forest soils with varying pH, Soil Biol. Biochem., 26, 1003–1009, 1994.
St. Louis, V. L., Kelly, C. A., Duchemin, É., Rudd, J. W. M., and Rosenberg, D. M.: Reservoir surfaces as sources of greenhouse gases to the atmosphere: A global estimate, Bioscience, 50, 766–775, 2000.
Sundh, I., Nilsson, M., Mikkelä, C., Granberg, G., and Svensson, B. H.: Fluxes of methane and carbon dioxide on peat-mining areas in Sweden, Ambio, 29, 499–503, 2000.
Suni, T., Rinne, J., Reissell, A., Altimir, N., Keronen, P., Rannik, Ü., Dal Maso, M., Kulmala, M., and Vesala, T.: Long-term measurements of surface fluxes above a Scots pine forest in Hyytiälä, southern Finland, 1996–2001, Boreal Environ. Res., 8, 287–301, 2003.
Syväsalo, E., Regina, K., Pihlatie, M., and Esala, M.: Emissions of nitrous oxide from agricultural clay and loamy sand soils in Finland, Nutr. Cy. AgroEcosyst., 69, 155–165, 2004.
Syväsalo, E., Regina, K., Turtola, E., Lemola, R., and Esala, M.: Fluxes of nitrous oxide and methane, and nitrogen leaching from organically and conventionally cultivated sandy soil in Western Finland, Agr. Ecosyst. Environ., 113, 342–348, 2006.
The Environment Agency of Iceland: National Inventory Report Iceland 2008; Submitted under the United Nations Framework Convention on Climate Change: Birna S. Hallsdóttir, Kristín Har{\dh}ardóttir and Jón Gu{\dh}mundsson, UST, 173, 2008.
The Environment Agency of Iceland: National Inventory Report Iceland 2009; Submitted under the United Nations Framework Convention on Climate Change: Birna S. Hallsdóttir, Kristin Har{\dh}ardóttir, Jón Gu{\dh}mundsson, Arnór Snorrason, UST, 2009.
Tremblay, A., Therrien, J., Hamlin, B., Wichmann, E. and LeDrew, L. J.: GHG emissions from boreal reservoirs and natural aquatic ecosystems, in: Greenhouse Gas Emissions – Fluxes and Processes: Hydroelectric Reservoirs and Natural Environments, edited by: Tremblay, A., Varfalvy, L., Roehm, C., and Garneau, M., Springer, 210–232, 2005.
Tuittila, E.-S. and Komulainen, V.-M.: Vegetation and CO2 balance in an abandoned harvested peatland in Aitoneva, southern Finland, Suo, 46, 69–80, 1995.
Tuittila, E.-S., Komulainen, V.-M., Vasander, H., and Laine, J.: Restored cut-away peatland as a sink for atmospheric CO2, Oecologia, 120, 563–574, 1999.
Tuittila, E.-S., Komulainen, V. M., Vasander, H., Nykänen, H., Martikainen, P. J., and Laine, J.: Methane dynamics of a restored cut-away peatland, Global Change Biol., 6, 569–581, 2000.
Tuittila, E.-S., Vasander, H., and Laine, J.: Sensitivity of C sequestration in reintroduced Sphagnum to water-level variation in a peat extraction peatland, Restor. Ecol., 12, 483–493, 2004.
Turunen, J.: Development of Finnish peatland area and carbon storage 1950–2000, Boreal Environ. Res., 13, 319–334, 2008.
Turunen, J., Tomppo, E., Tolonen, K., and Reinikainen, A.: Estimating carbon accumulation rates of undrained mires in Finland - application to boreal and subarctic regions, Holocene, 12, 79–90, 2002.
UNFCCC: Iceland; Land Use, Land-Use Change and Forestry (LULUCF), Submission to the AWG-LCA and AWG-KP, 5 December 2008 Accra Climate Change Talks 2008, Accra, Ghana, 21–27 August 2008, http://unfccc.int/files/kyoto_protocol/application/pdf/icelandlulucf051208.pdf, last access: 14 September 2010, 2008.
Valentini, R., Matteucci, G., Dolman, A. J., Schulze, E.-D., Rebmann, C., Moors, E. J., Granier, A., Gross, P., Jensen, N. O., Pilegaard, K., Lindroth, A., Grelle, A., Bernhofer, C., Grünwald, T., Aubinet, M., Ceulemans, R., Kowalski, A. S., Vesala, T., \mboxRannik, Ü., Berbigier, P., Loustau, D., Gu\dhmundsson, J., Thorgeirsson, H., Ibrom, A., Morgenstern, K., Clement, R., Moncrieff, J., Montagnani, L., Minerbi, S., Jarvis, P. G.: Respiration as the main determinant of carbon balance in European forests, Nature, 404, 861–865, 2000.
VAPO: Biomass dryer set to revolutionize peat production. http://www.vapo.fi/eng/company/vapo_local_fuels/peat_production/production_methods/new_production_technology/?id=1068, last access: 20 February, 2009.
Vasander, H., Tuittila, E.-S., Lode, E., Lundin, L., Ilomets, M., Sallantaus, T., Heikkilä, R., Pitkänen, M.-L., and Laine, J.: Status and restoration of peatlands in northern Europe, Wetland Ecol. Manag., 11, 51–63, 2003.
Virkajärvi, P., Maljanen, M., Saarijärvi, K., Haapala, J., and Martikainen, P. J. : N2O emissions from a boreal grass and grass-clover pasture soils, Agr. Ecosyst. Environ., 137, 59–67, 2010.
von Arnold, K., Hånell, B., Stendahl, J., and Klemedtsson, L.: Greenhouse gas fluxes from drained organic forestland in Sweden, Scand. J. Forest Res., 20, 400–411, 2005a.
von Arnold, K., Weslien, P., Nilsson, M., Svensson, B. H., and Klemedtsson, L.: Fluxes of CO2, CH4 and N2O from drained coniferous forests on organic soils, Forest Ecol. Manag., 210, 239–254, 2005b.
von Arnold, K., Nilsson, M., Hånell, B., Weslien, P., and Klemedtsson, L.: Fluxes of CO2, CH4 and N2O from deciduous forests on organic soils, Soil Biol. Biochem., 37, 1059–1071, 2005c.
Votlendisnefnd Landbúna{\dh}arrá{\dh}uneytisin: Endurheimt votlendis 1996–2006, Sk\'{y}rsla votlendisnefndar, Landbúna{\dh}arrá{\dh}uneyti{\dh} 2006, 27. bla{\dh}sí{\dh}ur, Restoration of wetlands in Iceland 1996–2006, Report of the Ministry of Agriculture's wetland committee, 27 pp., 2006.
Waddington, J. M., Warner, K. D., and Kennedy, G. W.: Cutover peatlands: A persistent source of atmospheric CO2, Global Biogeochem. Cy., 16, 1002, https://doi.org/10.1029/2001GB001298, 2002.
Waddington, J. M. and Day, S. M.: Methane emissions from a peatland following restoration, J. Geophys. Res., 112, G03018, https://doi.org/10.1029/2007JG000400, 2007.
Wagner-Riddle, C., Hu, Q. C., van Bochove, E., and Jayasundara, S.: Linking nitrous oxide flux during spring thaw to nitrate denitrification in the soil profile, Soil Sci. Soc. Am. J., 72, 908–916, 2008.
Weslien, P., Kasimir Klemedtsson, Å., Börjesson, G., and Klemedsson, L.: Strong pH influence on N2O and CH4 fluxes from forested organic soils, Eur. J. Soil Sci., 3, 311–320, https://doi.org/10.1111/j.1365-2389.2009.01123.x, 2009.
WMO, (World Meteorological Organization): WMO Greenhouse gas bulletin, No. 4, 14 November, 2008.
Yli-Petäys, M., Laine, J., Vasander, H., and Tuittila, E.-S.: Carbon gas exchange of a re-vegetated cut-away peatland five decades after abandonment, Boreal Environ. Res., 12, 177–190, 2007.
Yu, K., Struwe, S., Kjøller, A., and Chen, G.: Nitrous oxide production and consumption potential in an agricultural and forest soil, Commun. Soil Sci. Plant, 39, 2205–2220, 2008.
Zha, T., Xing, Z., Wang, K.-Y., Kellomäki, S., and Barr, A.: Total and component carbon fluxes of a Scots pine ecosystem from chamber measurements and eddy covariance, Ann. Bot., 99, 345–353, https://doi.org/10.1093/aob/mc1266, 2007.
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