Articles | Volume 18, issue 19
https://doi.org/10.5194/bg-18-5291-2021
© Author(s) 2021. 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-18-5291-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
30 Sep 2021
Research article |
| 30 Sep 2021
| 30 Sep 2021
Temporal trends in methane emissions from a small eutrophic reservoir: the key role of a spring burst
Center for Environmental Measurements and Modeling, Office of Research and Development, United States
Environmental Protection Agency,
Cincinnati, OH 45268, USA
currently at: United States Environmental Protection Agency, Region 10, Seattle, WA 98101, USA
Jake J. Beaulieu
Center for Environmental Measurements and Modeling, Office of Research and Development, United States
Environmental Protection Agency,
Cincinnati, OH 45268, USA
William Barnett
Neptune and Company, Inc., Lakewood, CO 80215, USA
D. Adam Balz
Pegasus Technical Services, Cincinnati, OH 45268, USA
currently at: Office of Research and Development, Center for Environmental Solutions & Emergency Response, United States Environmental Protection Agency, Cincinnati, OH 45268, USA
Michael J. Vanni
Department of Biology, Miami University, Oxford, OH 45056, USA
Tanner Williamson
Department of Biology, Miami University, Oxford, OH 45056, USA
John T. Walker
Office of Research and Development, Center for Environmental Measurements and Modeling, United States
Environmental Protection Agency, Durham, NC 27709, USA
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John T. Walker, Xi Chen, Zhiyong Wu, Donna Schwede, Ryan Daly, Aleksandra Djurkovic, A. Christopher Oishi, Eric Edgerton, Jesse Bash, Jennifer Knoepp, Melissa Puchalski, John Iiames, and Chelcy F. Miniat
Biogeosciences, 20, 971–995, https://doi.org/10.5194/bg-20-971-2023, https://doi.org/10.5194/bg-20-971-2023, 2023
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Better estimates of atmospheric nitrogen (N) deposition are needed to accurately assess ecosystem risk and impacts from deposition of nutrients and acidity. Using measurements and modeling, we estimate total N deposition of 6.7 kg N ha−1 yr−1 at a forest site in the southern Appalachian Mountains, a region sensitive to atmospheric deposition. Reductions in deposition of reduced forms of N (ammonia and ammonium) will be needed to meet the lowest estimates of N critical loads for the region.
Zhiyong Wu, Leiming Zhang, John T. Walker, Paul A. Makar, Judith A. Perlinger, and Xuemei Wang
Geosci. Model Dev., 14, 5093–5105, https://doi.org/10.5194/gmd-14-5093-2021, https://doi.org/10.5194/gmd-14-5093-2021, 2021
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A community dry deposition algorithm for modeling the gaseous dry deposition process in chemistry transport models was extended to include an additional 12 oxidized volatile organic compounds and hydrogen cyanide based on their physicochemical properties and was then evaluated using field flux measurements over a mixed forest. This study provides a useful tool that is needed in chemistry transport models with increasing complexity for simulating an important atmospheric process.
Havala O. T. Pye, Athanasios Nenes, Becky Alexander, Andrew P. Ault, Mary C. Barth, Simon L. Clegg, Jeffrey L. Collett Jr., Kathleen M. Fahey, Christopher J. Hennigan, Hartmut Herrmann, Maria Kanakidou, James T. Kelly, I-Ting Ku, V. Faye McNeill, Nicole Riemer, Thomas Schaefer, Guoliang Shi, Andreas Tilgner, John T. Walker, Tao Wang, Rodney Weber, Jia Xing, Rahul A. Zaveri, and Andreas Zuend
Atmos. Chem. Phys., 20, 4809–4888, https://doi.org/10.5194/acp-20-4809-2020, https://doi.org/10.5194/acp-20-4809-2020, 2020
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Acid rain is recognized for its impacts on human health and ecosystems, and programs to mitigate these effects have had implications for atmospheric acidity. Historical measurements indicate that cloud and fog droplet acidity has changed in recent decades in response to controls on emissions from human activity, while the limited trend data for suspended particles indicate acidity may be relatively constant. This review synthesizes knowledge on the acidity of atmospheric particles and clouds.
Xi Chen, Mingjie Xie, Michael D. Hays, Eric Edgerton, Donna Schwede, and John T. Walker
Atmos. Chem. Phys., 18, 6829–6846, https://doi.org/10.5194/acp-18-6829-2018, https://doi.org/10.5194/acp-18-6829-2018, 2018
Xi Chen, John T. Walker, and Chris Geron
Atmos. Meas. Tech., 10, 3893–3908, https://doi.org/10.5194/amt-10-3893-2017, https://doi.org/10.5194/amt-10-3893-2017, 2017
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The MARGA instrument is a powerful research tool for investigating atmospheric chemistry and the exchange of gases and particles between the atmosphere and biosphere. Our study examines the operating characteristics of the instrument with a focus on the software used to calculate air concentrations. We show that more accurate measurements may be obtained by calibrating the instrument with a range of standards in addition to the single internal standard used in online concentration calculations.
Rose M. Smith, Sujay S. Kaushal, Jake J. Beaulieu, Michael J. Pennino, and Claire Welty
Biogeosciences, 14, 2831–2849, https://doi.org/10.5194/bg-14-2831-2017, https://doi.org/10.5194/bg-14-2831-2017, 2017
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Urban streams receive excess nitrogen from numerous sources. We hypothesized that variations in carbon availability and subsurface infrastructure influence emissions of N2O and other greenhouse gases (CH4 and CO2) as excess N is utilized by microbes. We sampled eight streams draining four categories of stormwater and sanitary infrastructure. Dissolved nitrogen concentration was the strongest predictor of CO2 and N2O concentrations, while C : N ratio was the strongest predictor of CH4 in streams.
Ian C. Rumsey and John T. Walker
Atmos. Meas. Tech., 9, 2581–2592, https://doi.org/10.5194/amt-9-2581-2016, https://doi.org/10.5194/amt-9-2581-2016, 2016
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The performance of the MARGA (Monitor of AeRosols and GAses in ambient air) instrument in measuring speciated nitrogen and sulfur fluxes is evaluated for the first time. The results demonstrate that the MARGA instrument can be used to make accurate measurements of speciated nitrogen and sulfur deposition. These measurements are urgently needed to evaluate chemical transport models and develop risk assessments and mitigation strategies to protect ecosystems from nutrient and acidic deposition.
F. Yu, G. Luo, S. C. Pryor, P. R. Pillai, S. H. Lee, J. Ortega, J. J. Schwab, A. G. Hallar, W. R. Leaitch, V. P. Aneja, J. N. Smith, J. T. Walker, O. Hogrefe, and K. L. Demerjian
Atmos. Chem. Phys., 15, 13993–14003, https://doi.org/10.5194/acp-15-13993-2015, https://doi.org/10.5194/acp-15-13993-2015, 2015
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The role of low-volatility organics in new particle formation (NPF) in the atmosphere is assessed. An empirical formulation in which formation rate is a function of the concentrations of sulfuric acid and low-volatility organics significantly overpredicts NPF in the summer.
Two different schemes predict quite different nucleation rates (including their spatial patterns), concentrations of cloud condensation nuclei, and aerosol first indirect radiative forcing in North America.
B. B. Almand-Hunter, J. T. Walker, N. P. Masson, L. Hafford, and M. P. Hannigan
Atmos. Meas. Tech., 8, 267–280, https://doi.org/10.5194/amt-8-267-2015, https://doi.org/10.5194/amt-8-267-2015, 2015
I. C. Rumsey, K. A. Cowen, J. T. Walker, T. J. Kelly, E. A. Hanft, K. Mishoe, C. Rogers, R. Proost, G. M. Beachley, G. Lear, T. Frelink, and R. P. Otjes
Atmos. Chem. Phys., 14, 5639–5658, https://doi.org/10.5194/acp-14-5639-2014, https://doi.org/10.5194/acp-14-5639-2014, 2014
J. O. Bash, E. J. Cooter, R. L. Dennis, J. T. Walker, and J. E. Pleim
Biogeosciences, 10, 1635–1645, https://doi.org/10.5194/bg-10-1635-2013, https://doi.org/10.5194/bg-10-1635-2013, 2013
J. T. Walker, M. R. Jones, J. O. Bash, L. Myles, T. Meyers, D. Schwede, J. Herrick, E. Nemitz, and W. Robarge
Biogeosciences, 10, 981–998, https://doi.org/10.5194/bg-10-981-2013, https://doi.org/10.5194/bg-10-981-2013, 2013
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
Carbon emissions and radiative forcings from tundra wildfires in the Yukon-Kuskokwim River Delta, Alaska
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
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.
Michael Moubarak, Seeta Sistla, Stefano Potter, Susan M. Natali, and Brendan M. Rogers
Biogeosciences Discuss., https://doi.org/10.5194/bg-2022-144, https://doi.org/10.5194/bg-2022-144, 2022
Revised manuscript accepted for BG
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Tundra wildfires are increasing in frequency and severity with climate change. We show using a combination of field measurements and computational modeling that tundra wildfires result in a positive feedback to climate change by emitting significant amounts of long-lived greenhouse gasses. With these effects, attention to tundra fires is necessary for mitigating climate change.
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.
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
Adams, H. D., Williams, A. P., Xu, C., Rauscher, S. A., Jiang, X., and
McDowell, N. G.: Empirical and process-based approaches to climate-induced
forest mortality models, Front. Plant Sci., 4, https://doi.org/10.3389/fpls.2013.00438,
2013.
Andersen, I. M., Williamson, T. J., González, M. J., and Vanni, M. J.:
Nitrate, ammonium, and phosphorus drive seasonal nutrient limitation of
chlorophytes, cyanobacteria, and diatoms in a hyper-eutrophic reservoir,
Limnol. Oceanogr., 65, 962–978, https://doi.org/10.1002/lno.11363, 2020.
Aubinet, M., Feigenwinter, C., Heinesch, B., Laffineur, Q., Papale, D.,
Reichstein, M., Rinne, J., and Van Gorsel, E.: Nighttime Flux Correction, in:
Eddy Covariance: A Practical Guide to Measurement and Data Analysis, edited
by: Aubinet, M., Vesala, T., and Papale, D., Springer Netherlands,
Dordrecht, 133–157, 2012.
Barnett, W., Waldo, S., and Beaulieu, J.: R Code for: Temporal trends in methane emissions from a small eutrophic reservoir: the key role of a spring burst, Zenodo [Code], https://doi.org/10.5281/zenodo.4540271, 2021a.
Barnett, W., Waldo, S., and Beaulieu, J.: Artificial Neural Network (ANN) resampling results for gap filling eddy covariance data, Zenodo [data set], https://doi.org/10.5281/zenodo.3995098, 2021b.
Bartosiewicz, M., Maranger, R., Przytulska, A., and Laurion, I.: Effects of
phytoplankton blooms on fluxes and emissions of greenhouse gases in a
eutrophic lake, Water Res., 196, 116985,
https://doi.org/10.1016/j.watres.2021.116985, 2021.
Bastien, J., Demarty, M., and Tremblay, A.: CO2 and CH4 diffusive and
degassing emissions from 2003 to 2009 at Eastmain 1 hydroelectric reservoir,
Québec, Canada, Inland Waters, 1, 113–123, https://doi.org/10.5268/IW-1.2.349,
2011.
Bastviken, D., Tranvik, L. J., Downing, J. A., Crill, P. M., and
Enrich-Prast, A.: Freshwater Methane Emissions Offset the Continental Carbon
Sink, Science, 331, 50–50, https://doi.org/10.1126/science.1196808, 2011.
Beaulieu, J. J., Smolenski, R. L., Nietch, C. T., Townsend-Small, A., and
Elovitz, M. S.: High Methane Emissions from a Midlatitude Reservoir Draining
an Agricultural Watershed, Environ. Sci. Technol., 48, 11100–11108,
https://doi.org/10.1021/es501871g, 2014.
Beaulieu, J. J., McManus, M. G., and Nietch, C. T.: Estimates of reservoir
methane emissions based on a spatially balanced probabilistic-survey,
Limnol. Oceanogr., 61, 27–40, https://doi.org/10.1002/lno.10284, 2016.
Beaulieu, J. J., Balz, D. A., Birchfield, M. K., Harrison, J. A., Nietch, C.
T., Platz, M. C., Squier, W. C., Waldo, S., Walker, J. T., White, K. M., and
Young, J. L.: Effects of an Experimental Water-level Drawdown on Methane
Emissions from a Eutrophic Reservoir, Ecosystems, 21, 657–674,
https://doi.org/10.1007/s10021-017-0176-2, 2018a.
Beaulieu, J. J., Balz, D. A., Birchfield, M. K., Harrison, J. A., Nietch, C.
T., Platz, M. C., Squier, W. C., Waldo, S., Walker, J. T., White, K. M., and
Young, J. L.: Effects of an Experimental Water-level Drawdown on Methane
Emissions from a Eutrophic Reservoir, Ecosystems, 21, 657–674,
https://doi.org/10.1007/s10021-017-0176-2, 2018b.
Beaulieu, J. J., Waldo, S., Balz, D. A., Barnett, W., Hall, A., Platz, M. C.
and White, K. M.: Methane and Carbon Dioxide Emissions From Reservoirs:
Controls and Upscaling, J. Geophys. Res.-Biogeo.,
125, e2019JG005474, https://doi.org/10.1029/2019JG005474, 2020.
Berberich, M. E., Beaulieu, J. J., Hamilton, T. L., Waldo, S., and Buffam,
I.: Spatial variability of sediment methane production and methanogen
communities within a eutrophic reservoir: Importance of organic matter
source and quantity, Limnol. Oceanogr., 65, 1336–1358,
https://doi.org/10.1002/lno.11392, 2020.
Cole, J. J., Prairie, Y. T., Caraco, N. F., McDowell, W. H., Tranvik, L. J.,
Striegl, R. G., Duarte, C. M., Kortelainen, P., Downing, J. A., Middelburg,
J. J., and Melack, J.: Plumbing the Global Carbon Cycle: Integrating Inland
Waters into the Terrestrial Carbon Budget, Ecosystems, 10, 172–185,
https://doi.org/10.1007/s10021-006-9013-8, 2007.
Deemer, B. R., Harrison, J. A., Li, S., Beaulieu, J. J., DelSontro, T.,
Barros, N., Bezerra-Neto, J. F., Powers, S. M., dos Santos, M. A., and Vonk,
J. A.: Greenhouse Gas Emissions from Reservoir Water Surfaces: A New Global
Synthesis, BioScience, 66, 949–964, https://doi.org/10.1093/biosci/biw117, 2016.
DelSontro, T., Kunz, M. J., Kempter, T., Wüest, A., Wehrli, B., and Senn,
D. B.: Spatial Heterogeneity of Methane Ebullition in a Large Tropical
Reservoir, Environ. Sci. Technol., 45, 9866–9873,
https://doi.org/10.1021/es2005545, 2011.
DelSontro, T., Boutet, L., St-Pierre, A., Giorgio, P. A., and del Prairie, Y.
T.: Methane ebullition and diffusion from northern ponds and lakes regulated
by the interaction between temperature and system productivity, Limnol. Oceanogr., 61, 62–77, https://doi.org/10.1002/lno.10335, 2016.
DelSontro, T., Beaulieu, J. J., and Downing, J. A.: Greenhouse gas emissions
from lakes and impoundments: Upscaling in the face of global change: GHG
emissions from lakes and impoundments, Limnol. Oceanogr., 3, 64–75,
https://doi.org/10.1002/lol2.10073, 2018a.
DelSontro, T., del Giorgio, P. A., and Prairie, Y. T.: No Longer a Paradox:
The Interaction Between Physical Transport and Biological Processes Explains
the Spatial Distribution of Surface Water Methane Within and Across Lakes,
Ecosystems, 21, 1073–1087, https://doi.org/10.1007/s10021-017-0205-1, 2018b.
Demarty, M., Bastien, J., and Tremblay, A.: Annual follow-up of gross diffusive carbon dioxide and methane emissions from a boreal reservoir and two nearby lakes in Québec, Canada, Biogeosciences, 8, 41–53, https://doi.org/10.5194/bg-8-41-2011, 2011.
Dengel, S., Zona, D., Sachs, T., Aurela, M., Jammet, M., Parmentier, F. J. W., Oechel, W., and Vesala, T.: Testing the applicability of neural networks as a gap-filling method using CH4 flux data from high latitude wetlands, Biogeosciences, 10, 8185–8200, https://doi.org/10.5194/bg-10-8185-2013, 2013.
Deshmukh, C., Serça, D., Delon, C., Tardif, R., Demarty, M., Jarnot, C., Meyerfeld, Y., Chanudet, V., Guédant, P., Rode, W., Descloux, S., and Guérin, F.: Physical controls on CH4 emissions from a newly flooded subtropical freshwater hydroelectric reservoir: Nam Theun 2, Biogeosciences, 11, 4251–4269, https://doi.org/10.5194/bg-11-4251-2014, 2014.
Duc, N. T., Crill, P., and Bastviken, D.: Implications of temperature and
sediment characteristics on methane formation and oxidation in lake
sediments, Biogeochemistry, 100, 185–196, https://doi.org/10.1007/s10533-010-9415-8,
2010.
Eugster, W., DelSontro, T., and Sobek, S.: Eddy covariance flux measurements confirm extreme CH4 emissions from a Swiss hydropower reservoir and resolve their short-term variability, Biogeosciences, 8, 2815–2831, https://doi.org/10.5194/bg-8-2815-2011, 2011.
Finkelstein, P. L. and Sims, P. F.: Sampling error in eddy correlation flux
measurements, J. Geophys. Res.-Atmos., 106,
3503–3509, https://doi.org/10.1029/2000JD900731, 2001.
Foken, T. M., Gockede, M., Mauder, L., Mahrt, L., Amiro, B. D., and Munger,
J. W.: Post-field quality control, in: Handbook of micrometeorology: a guide
for surface flux measurements, Dordrecht, Kluwer Academic, XIV, 250, https://doi.org/10.1007/1-4020-2265-4, 2004.
Fuchs, A., Lyautey, E., Montuelle, B., and Casper, P.: Effects of increasing
temperatures on methane concentrations and methanogenesis during
experimental incubation of sediments from oligotrophic and mesotrophic
lakes, J. Geophys. Res.-Biogeo., 121, 1394–1406,
https://doi.org/10.1002/2016JG003328, 2016.
Garvey, J. E., Marschall, E. A., and Wright, R. A.: From Star Charts to
Stoneflies: Detecting Relationships in Continuous Bivariate Data, Ecology,
79, 442–447, https://doi.org/10.1890/0012-9658(1998)079[0442:FSCTSD]2.0.CO;2, 1998.
Grasset, C., Mendonça, R., Saucedo, G. V., Bastviken, D., Roland, F., and
Sobek, S.: Large but variable methane production in anoxic freshwater
sediment upon addition of allochthonous and autochthonous organic matter,
Limnol. Oceanogr., 63, 1488–1501, https://doi.org/10.1002/lno.10786, 2018.
Harrison, J. A., Deemer, B. R., Birchfield, M. K., and O'Malley, M. T.:
Reservoir Water-Level Drawdowns Accelerate and Amplify Methane Emission,
Environ. Sci. Technol., 51, 1267–1277, https://doi.org/10.1021/acs.est.6b03185,
2017.
Hartmann, J. F., Günthel, M., Klintzsch, T., Kirillin, G., Grossart,
H.-P., Keppler, F., and Isenbeck-Schröter, M.: High Spatiotemporal
Dynamics of Methane Production and Emission in Oxic Surface Water, Environ.
Sci. Technol., 54, 1451–1463, https://doi.org/10.1021/acs.est.9b03182, 2020.
Hayes, N. M., Deemer, B. R., Corman, J. R., Razavi, N. R., and Strock, K. E.:
Key differences between lakes and reservoirs modify climate signals: A case
for a new conceptual model, Limnol. Oceanogr. Lett., 2,
47–62, https://doi.org/10.1002/lol2.10036, 2017.
Higgins, C. W., Pardyjak, E., Froidevaux, M., Simeonov, V., and Parlange, M.
B.: Measured and Estimated Water Vapor Advection in the Atmospheric Surface
Layer, J. Hydrometeorol., 14, 1966–1972,
https://doi.org/10.1175/JHM-D-12-0166.1, 2013.
Jammet, M., Crill, P., Dengel, S., and Friborg, T.: Large methane emissions
from a subarctic lake during spring thaw: Mechanisms and landscape
significance, J. Geophys. Res.-Biogeo., 120,
2289–2305, https://doi.org/10.1002/2015JG003137, 2015.
Juutinen, S., Rantakari, M., Kortelainen, P., Huttunen, J. T., Larmola, T., Alm, J., Silvola, J., and Martikainen, P. J.: Methane dynamics in different boreal lake types, Biogeosciences, 6, 209–223, https://doi.org/10.5194/bg-6-209-2009, 2009.
Kenny, W. T., Bohrer, G., Morin, T. H., Vogel, C. S., Matheny, A. M., and
Desai, A. R.: A Numerical Case Study of the Implications of Secondary
Circulations to the Interpretation of Eddy-Covariance Measurements Over
Small Lakes, Bound.-Lay. Meteorol., 165, 311–332,
https://doi.org/10.1007/s10546-017-0268-8, 2017.
Kincaid, T., Olsen, A., and Weber, M.: spsurvey: Spatial Survey Design and
Analysis, available at: https://cran.r-project.org/web/packages/spsurvey/index.html (last access:7 September 2021), 2019.
Kljun, N., Calanca, P., Rotach, M. W., and Schmid, H. P.: A simple two-dimensional parameterisation for Flux Footprint Prediction (FFP), Geosci. Model Dev., 8, 3695–3713, https://doi.org/10.5194/gmd-8-3695-2015, 2015.
Knoll, L. B., Vanni, M. J., Renwick, W. H., Dittman, E. K. and Gephart, J.
A.: Temperate reservoirs are large carbon sinks and small CO2 sources:
Results from high-resolution carbon budgets, Global Biogeochem. Cy.,
27, 52–64, https://doi.org/10.1002/gbc.20020, 2013.
Knox, S. H., Sturtevant, C., Matthes, J. H., Koteen, L., Verfaillie, J., and
Baldocchi, D.: Agricultural peatland restoration: effects of land-use change
on greenhouse gas (CO2 and CH4) fluxes in the Sacramento-San Joaquin Delta,
Global Change Biol., 21, 750–765, https://doi.org/10.1111/gcb.12745, 2015.
Knox, S. H., Jackson, R. B., Poulter, B., McNicol, G., Fluet-Chouinard, E.,
Zhang, Z., Hugelius, G., Bousquet, P., Canadell, J. G., Saunois, M., Papale,
D., Chu, H., Keenan, T. F., Baldocchi, D., Torn, M. S., Mammarella, I.,
Trotta, C., Aurela, M., Bohrer, G., Campbell, D. I., Cescatti, A.,
Chamberlain, S., Chen, J., Chen, W., Dengel, S., Desai, A. R., Euskirchen,
E., Friborg, T., Gasbarra, D., Goded, I., Goeckede, M., Heimann, M., Helbig,
M., Hirano, T., Hollinger, D. Y., Iwata, H., Kang, M., Klatt, J., Krauss, K.
W., Kutzbach, L., Lohila, A., Mitra, B., Morin, T. H., Nilsson, M. B., Niu,
S., Noormets, A., Oechel, W. C., Peichl, M., Peltola, O., Reba, M. L.,
Richardson, A. D., Runkle, B. R. K., Ryu, Y., Sachs, T., Schäfer, K. V.
R., Schmid, H. P., Shurpali, N., Sonnentag, O., Tang, A. C. I., Ueyama, M.,
Vargas, R., Vesala, T., Ward, E. J., Windham-Myers, L., Wohlfahrt, G., and
Zona, D.: FLUXNET-CH4 Synthesis Activity: Objectives, Observations, and
Future Directions, B. Am. Meteorol. Soc., 100,
2607–2632, https://doi.org/10.1175/BAMS-D-18-0268.1, 2019.
Liu, H., Zhang, Q., and Dowler, G.: Environmental Controls on the Surface
Energy Budget over a Large Southern Inland Water in the United States: An
Analysis of One-Year Eddy Covariance Flux Data, J. Hydrometeorol.,
13, 1893–1910, https://doi.org/10.1175/JHM-D-12-020.1, 2012.
Liu, H., Zhang, Q., Katul, G. G., Cole, J. J., Chapin, F. S., and MacIntyre,
S.: Large CO2 effluxes at night and during synoptic weather events
significantly contribute to CO2 emissions from a reservoir, Environ.
Res. Lett., 11, 064001, https://doi.org/10.1088/1748-9326/11/6/064001, 2016.
Lofton, D. D., Whalen, S. C., and Hershey, A. E.: Effect of temperature on
methane dynamics and evaluation of methane oxidation kinetics in shallow
Arctic Alaskan lakes, Hydrobiologia, 721, 209–222,
https://doi.org/10.1007/s10750-013-1663-x, 2014.
Maeck, A., DelSontro, T., McGinnis, D. F., Fischer, H., Flury, S., Schmidt,
M., Fietzek, P., and Lorke, A.: Sediment Trapping by Dams Creates Methane
Emission Hot Spots, Environ. Sci. Technol., 47, 8130–8137,
https://doi.org/10.1021/es4003907, 2013.
Martinet, J., Guédant, P., and Descloux, S.: Phytoplankton community and
trophic status assessment of a newly impounded sub-tropical reservoir: case
study of the Nam Theun 2 Reservoir (Lao PDR, Southeast Asia), Hydroécol.
Appl., 19, 173–195, https://doi.org/10.1051/hydro/2015006, 2016.
McDermitt, D., Burba, G., Xu, L., Anderson, T., Komissarov, A., Riensche,
B., Schedlbauer, J., Starr, G., Zona, D., Oechel, W., Oberbauer, S., and
Hastings, S.: A new low-power, open-path instrument for measuring methane
flux by eddy covariance, Appl. Phys. B, 102, 391–405,
https://doi.org/10.1007/s00340-010-4307-0, 2011.
Moffat, A. M., Papale, D., Reichstein, M., Hollinger, D. Y., Richardson, A.
D., Barr, A. G., Beckstein, C., Braswell, B. H., Churkina, G., Desai, A.,
Falge, E., Gove, J. H., Heimann, M., Hui, D., Jarvis, A. J., Kattge, J.,
Noormets, A., and Stauch, V. J.: Comprehensive comparison of gap-filling
techniques for eddy covariance net carbon fluxes, Agr. Forest Meteorol., 147, 209–232, https://doi.org/10.1016/j.agrformet.2007.08.011, 2007.
Moncrieff, J. B., Malhi, Y., and Leuning, R.: The propagation of errors in
long-term measurements of land-atmosphere fluxes of carbon and water, Global Change Biol., 2, 231–240, https://doi.org/10.1111/j.1365-2486.1996.tb00075.x,
1996.
Moncrieff, J. B., Massheder, J. M., de Bruin, H., Elbers, J., Friborg, T.,
Heusinkveld, B., Kabat, P., Scott, S., Soegaard, H., and Verhoef, A.: A
system to measure surface fluxes of momentum, sensible heat, water vapour
and carbon dioxide, J. Hydrol., 188, 589–611,
https://doi.org/10.1016/S0022-1694(96)03194-0, 1997.
Moncrieff, J. B., Clement, R., Finnigan, J., and Meyers, T.: Averaging,
detrending and filtering of eddy covariance time series, in: Handbook of
Micrometeorology: a guide for surface flux measurements,
Dordrecht, Kluwer Academic., 7–31, 2004.
Morin, T. H., Bohrer, G., Frasson, R. P. D. M., Naor-Azreli, L., Mesi, S.,
Stefanik, K. C., and Schäfer, K. V. R.: Environmental drivers of methane
fluxes from an urban temperate wetland park, J. Geophys. Res.-Biogeo., 119, 2188–2208, https://doi.org/10.1002/2014JG002750,
2014.
Nemitz, E., Mammarella, I., Ibrom, A., Aurela, M., Burba, G. G., Dengel, S.,
Gielen, B., Grelle, A., Heinesch, B., Herbst, M., Hörtnagl, L.,
Klemedtsson, L., Lindroth, A., Lohila, A., McDermitt, D. K., Meier, P.,
Merbold, L., Nelson, D., Nicolini, G., Nilsson, M. B., Peltola, O., Rinne,
J., and Zahniser, M.: Standardisation of eddy-covariance flux measurements of
methane and nitrous oxide, Int. Agrophys., 32, 517–549,
https://doi.org/10.1515/intag-2017-0042, 2018.
Olsen, A. R., Kincaid, T. M., and Payton, Q.: Spatially balanced survey
designs for natural resources, in Design and Analysis of Long-term
Ecological Monitoring Studies, edited by: Cooper, A. B., Licht, D. S., Millspaugh, J. J.,
and Gitzen, R. A., Cambridge University Press,
Cambridge, 126–150, 2012.
Podgrajsek, E., Sahlée, E., Bastviken, D., Holst, J., Lindroth, A., Tranvik, L., and Rutgersson, A.: Comparison of floating chamber and eddy covariance measurements of lake greenhouse gas fluxes, Biogeosciences, 11, 4225–4233, https://doi.org/10.5194/bg-11-4225-2014, 2014a.
Podgrajsek, E., Sahlée, E., and Rutgersson, A.: Diurnal cycle of lake
methane flux, J. Geophys. Res.-Biogeo., 119,
236–248, https://doi.org/10.1002/2013JG002327, 2014b.
Renwick, W. H., Vanni, M. J., Fisher, T. J., and Morris, E. L.: Stream
Nitrogen, Phosphorus, and Sediment Concentrations Show Contrasting Long-term
Trends Associated with Agricultural Change, J. Environ. Qual., 47, 1513–1521, https://doi.org/10.2134/jeq2018.04.0162, 2018.
Richardson, A. D., Hollinger, D. Y., Burba, G., Davis, K., Flanagan, L. B.,
Katul, G. G., Munger, J. W., Ricciuto, D. M., Stoy, P. C., Suyker, A. E.,
Verma, S. B., and Wofsy, S. C.: A multi-site analysis of random error in
tower-based measurements of carbon and energy fluxes, Agr. Forest Meteorol., 136, 1–18, https://doi.org/10.1016/j.agrformet.2006.01.007,
2006.
Ripley, B. and Venables, W.: nnet: Feed-Forward Neural Networks and
Multinomial Log-Linear Models, available at:
https://CRAN.R-project.org/package=nnet (last access: 7 September 2021), 2020.
Rõõm, E.-I., Nõges, P., Feldman, T., Tuvikene, L., Kisand, A.,
Teearu, H., and Nõges, T.: Years are not brothers: Two-year comparison of
greenhouse gas fluxes in large shallow Lake Võrtsjärv, Estonia,
J. Hydrol., 519, 1594–1606, https://doi.org/10.1016/j.jhydrol.2014.09.011,
2014.
Sahlée, E., Rutgersson, A., Podgrajsek, E., and Bergström, H.:
Influence from Surrounding Land on the Turbulence Measurements Above a Lake,
Bound.-Lay. Meteorol., 150, 235–258, https://doi.org/10.1007/s10546-013-9868-0,
2014.
Schubert, C. J., Diem, T., and Eugster, W.: Methane Emissions from a Small
Wind Shielded Lake Determined by Eddy Covariance, Flux Chambers, Anchored
Funnels, and Boundary Model Calculations: A Comparison, Environ. Sci.
Technol., 46, 4515–4522, https://doi.org/10.1021/es203465x, 2012.
Schwarz, J. I. K., Eckert, W., and Conrad, R.: Response of the methanogenic
microbial community of a profundal lake sediment (Lake Kinneret, Israel) to
algal deposition, Limnol. Oceanogr., 53, 113–121,
https://doi.org/10.4319/lo.2008.53.1.0113, 2008.
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.
Smucker, N. J., Beaulieu, J. J., Nietch, C. T., and Young, J. L.:
Increasingly severe cyanobacterial blooms and deep water hypoxia coincide
with warming water temperatures in reservoirs, Global Change Biol.,
27, 2507–2519, https://doi.org/10.1111/gcb.15618, 2021.
Stevens, D. L. and Olsen, A. R.: Variance estimation for spatially balanced
samples of environmental resources, Environmetrics, 14, 593–610,
https://doi.org/10.1002/env.606, 2003.
Thornton, K. W., Kimmel, B. L., and Payne, F. E. (Eds.): Reservoir limnology:
ecological perspectives, Wiley, New York, 256 pp., 1990.
Tušer, M., Picek, T., Sajdlová, Z., Jůza, T., Muška, M., and
Frouzová, J.: Seasonal and Spatial Dynamics of Gas Ebullition in a
Temperate Water-Storage Reservoir, Water Resour. Res., 53,
8266–8276, https://doi.org/10.1002/2017WR020694, 2017.
Varadharajan, C. and Hemond, H. F.: Time-series analysis of high-resolution
ebullition fluxes from a stratified, freshwater lake, J. Geophys. Res.-Biogeo., 117, G2, https://doi.org/10.1029/2011JG001866, 2012.
Varadharajan, C., Hermosillo, R., and Hemond, H. F.: A low-cost automated
trap to measure bubbling gas fluxes, Limnol. Oceanogr.-Meth.,
8, 363–375, https://doi.org/10.4319/lom.2010.8.363, 2010.
Vesala, T., Eugster, W., and Ojala, A.: Eddy Covariance Measurements over
Lakes, in Eddy Covariance, Dordrecht: Springer Netherlands, 133–157, 2012.
Webb, E. K., Pearman, G. I., and Leuning, R.: Correction of flux measurements
for density effects due to heat and water vapour transfer, Q. J. Roy. Meteor. Soc., 106, 85–100,
https://doi.org/10.1002/qj.49710644707, 1980.
Webb, J. R., Hayes, N. M., Simpson, G. L., Leavitt, P. R., Baulch, H. M., and
Finlay, K.: Widespread nitrous oxide undersaturation in farm waterbodies
creates an unexpected greenhouse gas sink, P. Natl. Acad. Sci. USA, 116, 9814–9819, 2019.
West, W. E., Coloso, J. J., and Jones, S. E.: Effects of algal and
terrestrial carbon on methane production rates and methanogen community
structure in a temperate lake sediment, Fresh. Biol., 57, 949–955,
https://doi.org/10.1111/j.1365-2427.2012.02755.x, 2012.
West, W. E., McCarthy, S. M., and Jones, S. E.: Phytoplankton lipid content
influences freshwater lake methanogenesis, Freshwater Biol., 60,
2261–2269, https://doi.org/10.1111/fwb.12652, 2015.
Whalen, S. C.: Biogeochemistry of Methane Exchange between Natural Wetlands
and the Atmosphere, Environ. Eng. Sci., 22, 73–94,
https://doi.org/10.1089/ees.2005.22.73, 2005.
Wik, M., Thornton, B. F., Bastviken, D., MacIntyre, S., Varner, R. K., and
Crill, P. M.: Energy input is primary controller of methane bubbling in
subarctic lakes, Geophys. Res. Lett., 41, 555–560,
https://doi.org/10.1002/2013GL058510, 2014.
Wik, M., Thornton, B. F., Bastviken, D., Uhlbäck, J., and Crill, P. M.:
Biased sampling of methane release from northern lakes: A problem for
extrapolation, Geophys. Res. Lett., 43, 1256–1262,
https://doi.org/10.1002/2015GL066501, 2016.
Williamson, T. J., Vanni, M. J., and Renwick, W. H.: Spatial and Temporal
Variability of Nutrient Dynamics and Ecosystem Metabolism in a
Hyper-eutrophic Reservoir Differ Between a Wet and Dry Year, Ecosystems,
24, 68–88, https://doi.org/10.1007/s10021-020-00505-8, 2021.
Winslow, L., Woolway, R., Brentrup, J., Leach, T., Zwart, J., Albers, S., and
Collinge, D.: rLakeAnalyzer: Lake Physics Tools, available at:
https://CRAN.R-project.org/package=rLakeAnalyzer (last access: 7 September 2021), 2019.
Wutzler, T., Reichstein, M., Moffat, A. M., and Migliavacca, M.: REddyProc:
Post Processing of (Half-)Hourly Eddy-Covariance
Measurements, R package version 1.2.2., available at: https://CRAN.R-project.org/package=REddyProc (last access: 7 September 2021), 2020.
Yvon-Durocher, G., Allen, A. P., Bastviken, D., Conrad, R., Gudasz, C.,
St-Pierre, A., Thanh-Duc, N., and del Giorgio, P. A.: Methane fluxes show
consistent temperature dependence across microbial to ecosystem scales,
Nature, 507, 488–491, https://doi.org/10.1038/nature13164, 2014.
Zhang, L., Liu, C., He, K., Shen, Q., and Zhong, J.: Dramatic temporal
variations in methane levels in black bloom prone areas of a shallow
eutrophic lake, Sci. Tot. Environ., 767, 144868,
https://doi.org/10.1016/j.scitotenv.2020.144868, 2021.
Zhao, Y., Sherman, B., Ford, P., Demarty, M., DelSontro, T., Harby, A.,
Tremblay, A., Øverjordet, I. B., Zhao, X., Hansen, B. H., and Wu, B.: A
comparison of methods for the measurement of CO2 and CH4 emissions from
surface water reservoirs: Results from an international workshop held at
Three Gorges Dam, June 2012, Limnol. Oceanogr.-Meth., 13,
15–29, https://doi.org/10.1002/lom3.10003, 2015.
Short summary
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.
Human-made reservoirs impact the carbon cycle. In particular, the breakdown of organic matter in...
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