Articles | Volume 12, issue 1
https://doi.org/10.5194/essd-12-61-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-12-61-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description paper
| 
06 Jan 2020
Data description paper |
| 06 Jan 2020
| 06 Jan 2020
An open-source database for the synthesis of soil radiocarbon data: International Soil Radiocarbon Database (ISRaD) version 1.0
Corey R. Lawrence
CORRESPONDING AUTHOR
US Geological Survey, Geosciences and Environmental Change Science
Center, Denver, CO, USA
Jeffrey Beem-Miller
Max Planck Institute for Biogeochemistry, Jena, Germany
Alison M. Hoyt
Max Planck Institute for Biogeochemistry, Jena, Germany
Climate and Ecosystem Sciences Division, Lawrence
Berkeley National Laboratory, Berkeley, CA, USA
Grey Monroe
Graduate Degree Program in Ecology, Colorado State University, Fort
Collins, CO, USA
Carlos A. Sierra
Max Planck Institute for Biogeochemistry, Jena, Germany
Shane Stoner
Max Planck Institute for Biogeochemistry, Jena, Germany
Katherine Heckman
US Forest Service Northern Research Station, Houghton, MI, USA
Joseph C. Blankinship
Department of Environmental Science, University of
Arizona, Tucson, AZ, USA
Susan E. Crow
Department of Natural Resources and Environmental Management, University of Hawai'i at Manoa, Honolulu, HI, USA
Gavin McNicol
Department of Earth System Science, Stanford University, Stanford, CA, USA
Susan Trumbore
Max Planck Institute for Biogeochemistry, Jena, Germany
Paul A. Levine
Department of Earth System Science, University of California, Irvine, CA, USA
Olga Vindušková
Department of Earth System Science, Stanford University, Stanford, CA, USA
Katherine Todd-Brown
Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL, USA
Craig Rasmussen
Department of Environmental Science, University of
Arizona, Tucson, AZ, USA
Caitlin E. Hicks Pries
Department of Biological Sciences, Dartmouth College, Hanover, NH,
USA
Christina Schädel
Center for Ecosystem Science and Society, Northern Arizona
University, Flagstaff, AZ, USA
Karis McFarlane
Lawrence Livermore National Laboratory, Livermore, CA, USA
Sebastian Doetterl
Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland
Christine Hatté
LSCE, UMR 8212 CEA-CNRS-UVSQ, Université Paris-Saclay, 91191
Gif-sur-Yvette, France
Yujie He
Department of Earth System Science, University of California, Irvine, CA, USA
Claire Treat
Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
Jennifer W. Harden
Department of Natural Resources and Environmental Management, University of Hawai'i at Manoa, Honolulu, HI, USA
US Geological Survey, Menlo Park, CA, USA
Margaret S. Torn
Climate and Ecosystem Sciences Division, Lawrence
Berkeley National Laboratory, Berkeley, CA, USA
Cristian Estop-Aragonés
Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
Asmeret Asefaw Berhe
Department of Life and Environmental Sciences, University of
California, Merced, CA, USA
Marco Keiluweit
Stockbridge School of Agriculture, University of
Massachusetts Amherst, Amherst, MA, USA
Ágatha Della Rosa Kuhnen
Max Planck Institute for Biogeochemistry, Jena, Germany
Erika Marin-Spiotta
Department of Geography, University of Wisconsin–Madison, Madison,
WI, USA
Alain F. Plante
Department of Earth and Environmental Science, University of
Pennsylvania, Philadelphia, PA, USA
Aaron Thompson
Department of Crop and Soil Science, Odum School of Ecology,
University of Georgia, Athens, GA, USA
Zheng Shi
Department of Ecology and Evolutionary Biology, University of
California, Irvine, CA, USA
Joshua P. Schimel
Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA, USA
Lydia J. S. Vaughn
Climate and Ecosystem Sciences Division, Lawrence
Berkeley National Laboratory, Berkeley, CA, USA
Department of Integrative Biology, University of California,
Berkeley, CA, USA
Sophie F. von Fromm
Max Planck Institute for Biogeochemistry, Jena, Germany
Rota Wagai
National Agriculture and Food Research Organization, Institute for
Agro-Environmental Sciences, Tsukuba, Ibaraki, Japan
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EGUsphere, https://doi.org/10.5194/egusphere-2025-6047, https://doi.org/10.5194/egusphere-2025-6047, 2025
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We studied California farmland managed with conservation practices for 20 years to understand how reducing tillage and planting cover crops affects soil health. These practices dramatically improved soil structure and doubled carbon storage in surface soils. Importantly, soils still have substantial capacity to store more carbon even after two decades. These findings show conservation farming can combat climate change while improving water retention in drought-prone regions.
Mélissa Laurent, Mackenzie R. Baysinger, Jörg Schaller, Matthias Lück, Mathias Hoffmann, Torben Windirsch, Ruth H. Ellerbrock, Jens Strauss, and Claire C. Treat
Biogeosciences, 22, 7881–7899, https://doi.org/10.5194/bg-22-7881-2025, https://doi.org/10.5194/bg-22-7881-2025, 2025
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Palsas are peat permafrost mounds underlain by ice-rich permafrost. Due to climate change, they could disappear by the end of the century. When palsas thaw, changes occur in hydrological conditions affecting the carbon (C) cycle. In our study, we simulated permafrost thaw under different water treatments using 1-meter soil columns from a palsa. We measured CH4 and CO2 emissions for 3-month incubation. Our results show that following thaw, flooding the cores leads to increased CO2 emissions.
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Annina Maier, Maria E. Macfarlane, Marco Griepentrog, and Sebastian Doetterl
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EGUsphere, https://doi.org/10.5194/egusphere-2025-5483, https://doi.org/10.5194/egusphere-2025-5483, 2025
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Soil is the largest terrestrial carbon pool but vulnerable to loss under warming. Using a +4 °C whole-soil warming experiment at Blodgett Forest Research Station to 1 m depth, we investigated density fractions across depths. Below 50 cm, carbon quantity and composition shifted, mainly from losses of unprotected soil organic carbon. Soil carbon protected by minerals stayed largely stable, indicating organo-mineral protection buffers subsoil carbon loss.
Carlos A. Sierra, Ingrid Chanca, Meinrat O. Andreae, Alessandro Carioca de Araújo, Hella van Asperen, Lars Borchardt, Santiago Botía, Luiz Antonio Candido, Caio S. C. Correa, Cléo Quaresma Dias-Junior, Markus Eritt, Annica Fröhlich, Luciana V. Gatti, Marcus Guderle, Samuel Hammer, Martin Heimann, Viviana Horna, Armin Jordan, Steffen Knabe, Richard Kneißl, Jost Valentin Lavric, Ingeborg Levin, Kita Macario, Juliana Menger, Heiko Moossen, Carlos Alberto Quesada, Michael Rothe, Christian Rödenbeck, Yago Santos, Axel Steinhof, Bruno Takeshi, Susan Trumbore, and Sönke Zaehle
Earth Syst. Sci. Data, 17, 5871–5884, https://doi.org/10.5194/essd-17-5871-2025, https://doi.org/10.5194/essd-17-5871-2025, 2025
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Teneille Nel, Manisha Dolui, Abbygail R. McMurtry, Stephanie Chacon, Joseph A. Mason, Laura M. Phillips, Erika Marin-Spiotta, Marie-Anne de Graaff, Asmeret A. Berhe, and Teamrat A. Ghezzehei
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Tiia Määttä, Ankur Desai, Masahito Ueyama, Rodrigo Vargas, Eric J. Ward, Zhen Zhang, Gil Bohrer, Kyle Delwiche, Etienne Fluet-Chouinard, Järvi Järveoja, Sara Knox, Lulie Melling, Mats B. Nilsson, Matthias Peichl, Angela Che Ing Tang, Eeva-Stiina Tuittila, Jinsong Wang, Sheel Bansal, Sarah Feron, Manuel Helbig, Aino Korrensalo, Ken W. Krauss, Gavin McNicol, Shuli Niu, Zutao Ouyang, Kathleen Savage, Oliver Sonnentag, Robert Jackson, and Avni Malhotra
EGUsphere, https://doi.org/10.5194/egusphere-2025-5023, https://doi.org/10.5194/egusphere-2025-5023, 2025
This preprint is open for discussion and under review for Biogeosciences (BG).
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Anna-Maria Virkkala, Isabel Wargowsky, Judith Vogt, McKenzie A. Kuhn, Simran Madaan, Richard O'Keefe, Tiffany Windholz, Kyle A. Arndt, Brendan M. Rogers, Jennifer D. Watts, Kelcy Kent, Mathias Göckede, David Olefeldt, Gerard Rocher-Ros, Edward A. G. Schuur, David Bastviken, Kristoffer Aalstad, Kelly Aho, Joonatan Ala-Könni, Haley Alcock, Inge Althuizen, Christopher D. Arp, Jun Asanuma, Katrin Attermeyer, Mika Aurela, Sivakiruthika Balathandayuthabani, Alan Barr, Maialen Barret, Ochirbat Batkhishig, Christina Biasi, Mats P. Björkman, Andrew Black, Elena Blanc-Betes, Pascal Bodmer, Julia Boike, Abdullah Bolek, Frédéric Bouchard, Ingeborg Bussmann, Lea Cabrol, Eleonora Canfora, Sean Carey, Karel Castro-Morales, Namyi Chae, Andres Christen, Torben R. Christensen, Casper T. Christiansen, Housen Chu, Graham Clark, Francois Clayer, Patrick Crill, Christopher Cunada, Scott J. Davidson, Joshua F. Dean, Sigrid Dengel, Matteo Detto, Catherine Dieleman, Florent Domine, Egor Dyukarev, Colin Edgar, Bo Elberling, Craig A. Emmerton, Eugenie Euskirchen, Grant Falvo, Thomas Friborg, Michelle Garneau, Mariasilvia Giamberini, Mikhail V. Glagolev, Miquel A. Gonzalez-Meler, Gustaf Granath, Jón Guðmundsson, Konsta Happonen, Yoshinobu Harazono, Lorna Harris, Josh Hashemi, Nicholas Hasson, Janna Heerah, Liam Heffernan, Manuel Helbig, Warren Helgason, Michal Heliasz, Greg Henry, Geert Hensgens, Tetsuya Hiyama, Macall Hock, David Holl, Beth Holmes, Jutta Holst, Thomas Holst, Gabriel Hould-Gosselin, Elyn Humphreys, Jacqueline Hung, Jussi Huotari, Hiroki Ikawa, Danil V. Ilyasov, Mamoru Ishikawa, Go Iwahana, Hiroki Iwata, Marcin Antoni Jackowicz-Korczynski, Joachim Jansen, Järvi Järveoja, Vincent E. J. Jassey, Rasmus Jensen, Katharina Jentzsch, Robert G. Jespersen, Carl-Fredrik Johannesson, Chersity P. Jones, Anders Jonsson, Ji Young Jung, Sari Juutinen, Evan Kane, Jan Karlsson, Sergey Karsanaev, Kuno Kasak, Julia Kelly, Kasha Kempton, Marcus Klaus, George W. Kling, Natacha Kljun, Jacqueline Knutson, Hideki Kobayashi, John Kochendorfer, Kukka-Maaria Kohonen, Pasi Kolari, Mika Korkiakoski, Aino Korrensalo, Pirkko Kortelainen, Egle Koster, Kajar Koster, Ayumi Kotani, Praveena Krishnan, Juliya Kurbatova, Lars Kutzbach, Min Jung Kwon, Ethan D. Kyzivat, Jessica Lagroix, Theodore Langhorst, Elena Lapshina, Tuula Larmola, Klaus S. Larsen, Isabelle Laurion, Justin Ledman, Hanna Lee, A. Joshua Leffler, Lance Lesack, Anders Lindroth, David Lipson, Annalea Lohila, Efrén López-Blanco, Vincent L. St. Louis, Erik Lundin, Misha Luoto, Takashi Machimura, Marta Magnani, Avni Malhotra, Marja Maljanen, Ivan Mammarella, Elisa Männistö, Luca Belelli Marchesini, Phil Marsh, Pertti J. Martkainen, Maija E. Marushchak, Mikhail Mastepanov, Alex Mavrovic, Trofim Maximov, Christina Minions, Marco Montemayor, Tomoaki Morishita, Patrick Murphy, Daniel F. Nadeau, Erin Nicholls, Mats B. Nilsson, Anastasia Niyazova, Jenni Nordén, Koffi Dodji Noumonvi, Hannu Nykanen, Walter Oechel, Anne Ojala, Tomohiro Okadera, Sujan Pal, Alexey V. Panov, Tim Papakyriakou, Dario Papale, Sang-Jong Park, Frans-Jan W. Parmentier, Gilberto Pastorello, Mike Peacock, Matthias Peichl, Roman Petrov, Kyra St. Pierre, Norbert Pirk, Jessica Plein, Vilmantas Preskienis, Anatoly Prokushkin, Jukka Pumpanen, Hilary A. Rains, Niklas Rakos, Aleski Räsänen, Helena Rautakoski, Riika Rinnan, Janne Rinne, Adrian Rocha, Nigel Roulet, Alexandre Roy, Anna Rutgersson, Aleksandr F. Sabrekov, Torsten Sachs, Erik Sahlée, Alejandro Salazar, Henrique Oliveira Sawakuchi, Christopher Schulze, Roger Seco, Armando Sepulveda-Jauregui, Svetlana Serikova, Abbey Serrone, Hanna M. Silvennoinen, Sofie Sjogersten, June Skeeter, Jo Snöälv, Sebastian Sobek, Oliver Sonnentag, Emily H. Stanley, Maria Strack, Lena Strom, Patrick Sullivan, Ryan Sullivan, Anna Sytiuk, Torbern Tagesson, Pierre Taillardat, Julie Talbot, Suzanne E. Tank, Mario Tenuta, Irina Terenteva, Frederic Thalasso, Antoine Thiboult, Halldor Thorgeirsson, Fenix Garcia Tigreros, Margaret Torn, Amy Townsend-Small, Claire Treat, Alain Tremblay, Carlo Trotta, Eeva-Stiina Tuittila, Merritt Turetsky, Masahito Ueyama, Muhammad Umair, Aki Vähä, Lona van Delden, Maarten van Hardenbroek, Andrej Varlagin, Ruth K. Varner, Elena Veretennikova, Timo Vesala, Tarmo Virtanen, Carolina Voigt, Jorien E. Vonk, Robert Wagner, Katey Walter Anthony, Qinxue Wang, Masataka Watanabe, Hailey Webb, Jeffrey M. Welker, Andreas Westergaard-Nielsen, Sebastian Westermann, Jeffrey R. White, Christian Wille, Scott N. Williamson, Scott Zolkos, Donatella Zona, and Susan M. Natali
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-585, https://doi.org/10.5194/essd-2025-585, 2025
Preprint under review for ESSD
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This dataset includes monthly measurements of carbon dioxide and methane exchange between land, water, and the atmosphere from over 1,000 sites in Arctic and boreal regions. It combines measurements from a variety of ecosystems, including wetlands, forests, tundra, lakes, and rivers, gathered by over 260 researchers from 1984–2024. This dataset can be used to improve and reduce uncertainty in carbon budgets in order to strengthen our understanding of climate feedbacks in a warming world.
Eric Pohl, Christophe Grenier, Antoine Séjourné, Frédéric Bouchard, Emmanuel Léger, Albane Saintenoy, Pavel Konstantinov, Amélie Cuynet, Catherine Ottlé, Christine Hatté, Aurélie Noret, Kensheri Danilov, Kirill Bazhin, Ivan Khristoforov, Daniel Fortier, Alexander Fedorov, and Emmanuel Mouche
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-134, https://doi.org/10.5194/essd-2025-134, 2025
Preprint under review for ESSD
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Permafrost is widespread in the Northern Hemisphere and is thawing due to climate warming, impacting energy and mass transfers. Small streams emerge alongside lakes when ice in the ground melts away, potentially accelerating thawing and biogeochemical activity in a positive feedback cycle. This study provides a comprehensive dataset on these little-studied streams, including thermally and hydrologically important variables essential for improving numerical models.
Laura Summerauer, Fernando Bamba, Bendicto Akoraebirungi, Ahurra Wobusobozi, Marijn Bauters, Travis William Drake, Negar Haghipour, Clovis Kabaseke, Daniel Muhindo Iragi, Landry Cizungu Ntaboba, Leonardo Ramirez-Lopez, Johan Six, Daniel Wasner, and Sebastian Doetterl
EGUsphere, https://doi.org/10.5194/egusphere-2025-4625, https://doi.org/10.5194/egusphere-2025-4625, 2025
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Deforestation for croplands on tropical hillslopes causes severe soil degradation and loss of fertile topsoil. We found that this leads to a steep decline in soil fertility, including organic carbon, nitrogen, and phosphorus. This makes the land unproductive, often leading farmers to abandon it. Replanting with Eucalyptus trees doesn't restore fertility. This degradation leads to cropland lifespans of only 100–170 years and poses a serious threat to future food production.
Carlos A. Sierra and Estefanía Muñoz
Geosci. Model Dev., 18, 6701–6716, https://doi.org/10.5194/gmd-18-6701-2025, https://doi.org/10.5194/gmd-18-6701-2025, 2025
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We propose an approach to obtain weights for calculating averages of variables from Earth system models (ESM) based on concepts from information theory. It quantifies a relative distance between model output and reality, even though it is impossible to know the absolute distance from model predictions to reality. The relative ranking among models is based on concepts of model selection and multi-model averages previously developed for simple statistical models, but adapted here for ESMs.
Fabian Seemann, Michael Zech, Maren Jenrich, Guido Grosse, Benjamin M. Jones, Claire Treat, Lutz Schirrmeister, Susanne Liebner, and Jens Strauss
EGUsphere, https://doi.org/10.5194/egusphere-2025-3727, https://doi.org/10.5194/egusphere-2025-3727, 2025
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Arctic coastal landscapes, like those in northernmost Alaska, often contain saline sediments that are more prone to thawing. We studied six sediment cores to understand how thawing and salinity affect organic carbon breakdown and land change. Our results show that salinity speeds up organic matter loss when permafrost thaws. This highlights the overlooked risk of salinity in shaping Arctic landscapes and carbon release as the climate continues to warm.
Leila Maria Wahab, Sora L. Kim, and Asmeret Asefaw Berhe
Biogeosciences, 22, 3915–3930, https://doi.org/10.5194/bg-22-3915-2025, https://doi.org/10.5194/bg-22-3915-2025, 2025
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Soils are a large reservoir of carbon (C) on land, and there is uncertainty regarding how this reservoir will be affected by climate change. Currently, active research on (1) how changing precipitation patterns, a key aspect of climate change, will affect soil C and (2) how vulnerable subsoils are to climate change is still being undertaken. In this study, we examined subsoils after 20 years of experimentally manipulated precipitation shifts to see whether increasing precipitation would affect C amounts and chemistry.
Kaori Matsuoka, Jo Jinno, Hiroaki Shimada, Emi Matsumura, Ryo Shingubara, and Rota Wagai
EGUsphere, https://doi.org/10.5194/egusphere-2025-2840, https://doi.org/10.5194/egusphere-2025-2840, 2025
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The organo-mineral assemblage formation from the mixture of crushed rocks and leaf compost was promoted by (i) microbial re-working of OM (indicated by lower C:N and higher δ13C and δ15N compared to the original leaf compost) and (ii) the supply of extractable metals (esp. oxalate-extractable Fe phase) from the rock weathering. These findings supported the organo-metallic glue hypothesis (Wagai et al., 2020) and suggest that C accretion during early pedogenesis.
Valentina Lara, Carlos A. Sierra, Miguel A. Peña, Sebastián Ramirez, Diego Navarrete, Juan F. Phillips, and Álvaro Duque
EGUsphere, https://doi.org/10.5194/egusphere-2025-2959, https://doi.org/10.5194/egusphere-2025-2959, 2025
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Impacts of deforestation on the soil level are commonly overlooked. Conversion of Amazon rainforest to pastures increases soil compaction and decreases soil carbon storage, with lasting effects over time and across soil depth. After decades, pasture accumulated soil carbon doesn't match the original forest stocks. These changes may worsen climate change by reducing the Amazon basin ability to store carbon, highlighting the need to protect these ecosystems, from canopy to soil.
Lei Zhang, Lin Yang, Thomas W. Crowther, Constantin M. Zohner, Sebastian Doetterl, Gerard B. M. Heuvelink, Alexandre M. J.-C. Wadoux, A.-Xing Zhu, Yue Pu, Feixue Shen, Haozhi Ma, Yibiao Zou, and Chenghu Zhou
Earth Syst. Sci. Data, 17, 2605–2623, https://doi.org/10.5194/essd-17-2605-2025, https://doi.org/10.5194/essd-17-2605-2025, 2025
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Current understandings of depth-dependent variations and controls of soil organic carbon turnover time (τ) at global, biome, and local scales remain incomplete. We used the state-of-the-art soil and root profile databases and satellite observations to generate new spatially explicit global maps of topsoil and subsoil τ, with quantified uncertainties for better user applications. The new insights from the resulting maps will facilitate efforts to model the carbon cycle and will support effective carbon management.
Alexandra Hedgpeth, Alison M. Hoyt, Kyle C. Cavanaugh, Karis J. McFarlane, and Daniela F. Cusack
Biogeosciences, 22, 2667–2690, https://doi.org/10.5194/bg-22-2667-2025, https://doi.org/10.5194/bg-22-2667-2025, 2025
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Tropical peatlands store ancient carbon and have been identified as both being vulnerable to future climate change and taking a long time to recover after a disturbance. It is unknown if these gases are produced from decomposition of 1000-year-old peat. Radiocarbon dating shows emitted gases are young, indicating that surface carbon (rather than old peat) drives emissions. Preserving these ecosystems can trap old carbon, mitigating climate change.
Katharina Jentzsch, Lona van Delden, Matthias Fuchs, and Claire C. Treat
Earth Syst. Sci. Data, 17, 2331–2372, https://doi.org/10.5194/essd-17-2331-2025, https://doi.org/10.5194/essd-17-2331-2025, 2025
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Methane is a greenhouse gas that contributes to global warming, but we do not fully understand how much is released from natural sources like wetlands. To measure methane over large areas, many measurements are needed, often from small chambers that are placed on the ground. However, different researchers use different measurement setups, making it hard to combine data. We surveyed 36 researchers about their methods, summarized the responses, and identified ways to make the data more comparable.
Mike C. Rowley, Jasquelin Pena, Matthew A. Marcus, Rachel Porras, Elaine Pegoraro, Cyrill Zosso, Nicholas O. E. Ofiti, Guido L. B. Wiesenberg, Michael W. I. Schmidt, Margaret S. Torn, and Peter S. Nico
SOIL, 11, 381–388, https://doi.org/10.5194/soil-11-381-2025, https://doi.org/10.5194/soil-11-381-2025, 2025
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This study shows that calcium (Ca) preserves soil organic carbon (SOC) in acidic soils, challenging beliefs that their interactions were limited to near-neutral or alkaline soils. Using spectromicroscopy, we found that Ca was co-located with a specific fraction of carbon, rich in aromatic and phenolic groups. This association was disrupted when Ca was removed but was reformed during decomposition with added Ca. Overall, this suggests that Ca amendments could enhance SOC stability.
Hirofumi Hashimoto, Weile Wang, Taejin Park, Sepideh Khajehei, Kazuhito Ichii, Andrew Michaelis, Alberto Guzman, Ramakrishna Nemani, Margaret Torn, Koong Yi, and Ian Brosnan
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-33, https://doi.org/10.5194/essd-2025-33, 2025
Revised manuscript accepted for ESSD
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We create the GeoNEX Coincident Ground Observations dataset (GeCGO) by extracting point data at observational network sites across Americas from the gridded GeoNEX products. The GeoNEX dataset is the high temporal frequent dataset of the latest geostationary satellites observations. We also release the software, GeoNEXTools, that helps handling the GeCGO data. GeCGO data and GeoNEXTools could help scientists use geostationary satellite data at their interested ground observational sites.
Ingrid Chanca, Ingeborg Levin, Susan Trumbore, Kita Macario, Jost Lavric, Carlos Alberto Quesada, Alessandro Carioca de Araújo, Cléo Quaresma Dias Júnior, Hella van Asperen, Samuel Hammer, and Carlos A. Sierra
Biogeosciences, 22, 455–472, https://doi.org/10.5194/bg-22-455-2025, https://doi.org/10.5194/bg-22-455-2025, 2025
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Assessing the net carbon (C) budget of the Amazon entails considering the magnitude and timing of C absorption and losses through respiration (transit time of C). Radiocarbon-based estimates of the transit time of C in the Amazon Tall Tower Observatory (ATTO) suggest a change in the transit time from 6 ± 2 years and 18 ± 4 years within 2 years (October 2019 and December 2021, respectively). This variability indicates that only a fraction of newly fixed C can be stored for decades or longer.
Zhen Zhang, Benjamin Poulter, Joe R. Melton, William J. Riley, George H. Allen, David J. Beerling, Philippe Bousquet, Josep G. Canadell, Etienne Fluet-Chouinard, Philippe Ciais, Nicola Gedney, Peter O. Hopcroft, Akihiko Ito, Robert B. Jackson, Atul K. Jain, Katherine Jensen, Fortunat Joos, Thomas Kleinen, Sara H. Knox, Tingting Li, Xin Li, Xiangyu Liu, Kyle McDonald, Gavin McNicol, Paul A. Miller, Jurek Müller, Prabir K. Patra, Changhui Peng, Shushi Peng, Zhangcai Qin, Ryan M. Riggs, Marielle Saunois, Qing Sun, Hanqin Tian, Xiaoming Xu, Yuanzhi Yao, Yi Xi, Wenxin Zhang, Qing Zhu, Qiuan Zhu, and Qianlai Zhuang
Biogeosciences, 22, 305–321, https://doi.org/10.5194/bg-22-305-2025, https://doi.org/10.5194/bg-22-305-2025, 2025
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This study assesses global methane emissions from wetlands between 2000 and 2020 using multiple models. We found that wetland emissions increased by 6–7 Tg CH4 yr-1 in the 2010s compared to the 2000s. Rising temperatures primarily drove this increase, while changes in precipitation and CO2 levels also played roles. Our findings highlight the importance of wetlands in the global methane budget and the need for continuous monitoring to understand their impact on climate change.
Luciano Emmert, Susan Trumbore, Joaquim dos Santos, Adriano Lima, Niro Higuchi, Robinson Negrón-Juárez, Cléo Dias-Júnior, Tarek El-Madany, Olaf Kolle, Gabriel Ribeiro, and Daniel Marra
EGUsphere, https://doi.org/10.5194/egusphere-2024-3234, https://doi.org/10.5194/egusphere-2024-3234, 2024
Preprint archived
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For the first time, we documented wind gusts with the potential to damage trees in a forest in the Central Amazon. We used meteorological data collected at crown height over 24 months. We recorded 424 gusts, which occur more frequently and intensely in higher elevated areas and during the transition from the dry to the wet season. More intense rains showed the strongest relationship with extreme winds, highlighting the role of extreme events in tree mortality.
Katherine E. Grant, Marisa N. Repasch, Kari M. Finstad, Julia D. Kerr, Maxwell Marple, Christopher J. Larson, Taylor A. B. Broek, Jennifer Pett-Ridge, and Karis J. McFarlane
Biogeosciences, 21, 4395–4411, https://doi.org/10.5194/bg-21-4395-2024, https://doi.org/10.5194/bg-21-4395-2024, 2024
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Soils store organic carbon composed of multiple compounds from plants and microbes for different lengths of time. To understand how soils store these different carbon types, we measure the time each carbon fraction is in a grassland soil profile. Our results show that the length of time each individual soil fraction is in our soil changes. Our approach allows a detailed look at the different components in soils. This study can help improve our understanding of soil dynamics.
Katharina Jentzsch, Elisa Männistö, Maija E. Marushchak, Aino Korrensalo, Lona van Delden, Eeva-Stiina Tuittila, Christian Knoblauch, and Claire C. Treat
Biogeosciences, 21, 3761–3788, https://doi.org/10.5194/bg-21-3761-2024, https://doi.org/10.5194/bg-21-3761-2024, 2024
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During cold seasons, methane release from northern wetlands is important but often underestimated. We studied a boreal bog to understand methane emissions in spring and fall. At cold temperatures, methane release decreases due to lower production rates, but efficient methane transport through plant structures, decaying plants, and the release of methane stored in the pore water keep emissions ongoing. Understanding these seasonal processes can improve models for methane release in cold climates.
Luiz A. T. Machado, Jürgen Kesselmeier, Santiago Botía, Hella van Asperen, Meinrat O. Andreae, Alessandro C. de Araújo, Paulo Artaxo, Achim Edtbauer, Rosaria R. Ferreira, Marco A. Franco, Hartwig Harder, Sam P. Jones, Cléo Q. Dias-Júnior, Guido G. Haytzmann, Carlos A. Quesada, Shujiro Komiya, Jost Lavric, Jos Lelieveld, Ingeborg Levin, Anke Nölscher, Eva Pfannerstill, Mira L. Pöhlker, Ulrich Pöschl, Akima Ringsdorf, Luciana Rizzo, Ana M. Yáñez-Serrano, Susan Trumbore, Wanda I. D. Valenti, Jordi Vila-Guerau de Arellano, David Walter, Jonathan Williams, Stefan Wolff, and Christopher Pöhlker
Atmos. Chem. Phys., 24, 8893–8910, https://doi.org/10.5194/acp-24-8893-2024, https://doi.org/10.5194/acp-24-8893-2024, 2024
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Composite analysis of gas concentration before and after rainfall, during the day and night, gives insight into the complex relationship between trace gas variability and precipitation. The analysis helps us to understand the sources and sinks of trace gases within a forest ecosystem. It elucidates processes that are not discernible under undisturbed conditions and contributes to a deeper understanding of the trace gas life cycle and its intricate interactions with cloud dynamics in the Amazon.
Hella van Asperen, Thorsten Warneke, Alessandro Carioca de Araújo, Bruce Forsberg, Sávio José Filgueiras Ferreira, Thomas Röckmann, Carina van der Veen, Sipko Bulthuis, Leonardo Ramos de Oliveira, Thiago de Lima Xavier, Jailson da Mata, Marta de Oliveira Sá, Paulo Ricardo Teixeira, Julie Andrews de França e Silva, Susan Trumbore, and Justus Notholt
Biogeosciences, 21, 3183–3199, https://doi.org/10.5194/bg-21-3183-2024, https://doi.org/10.5194/bg-21-3183-2024, 2024
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Carbon monoxide (CO) is regarded as an important indirect greenhouse gas. Soils can emit and take up CO, but, until now, uncertainty remains as to which process dominates in tropical rainforests. We present the first soil CO flux measurements from a tropical rainforest. Based on our observations, we report that tropical rainforest soils are a net source of CO. In addition, we show that valley streams and inundated areas are likely additional hot spots of CO in the ecosystem.
Maximiliano González-Sosa, Carlos A. Sierra, J. Andrés Quincke, Walter E. Baethgen, Susan Trumbore, and M. Virginia Pravia
SOIL, 10, 467–486, https://doi.org/10.5194/soil-10-467-2024, https://doi.org/10.5194/soil-10-467-2024, 2024
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Based on an approach that involved soil organic carbon (SOC) monitoring, radiocarbon measurement in bulk soil, and incubations from a long-term 60-year experiment, it was concluded that the avoidance of old carbon losses in the integrated crop–pasture systems is the main reason that explains their greater carbon storage capacities compared to continuous cropping. A better understanding of these processes is essential for making agronomic decisions to increase the carbon sequestration capacity.
Johan Six, Sebastian Doetterl, Moritz Laub, Claude R. Müller, and Marijn Van de Broek
SOIL, 10, 275–279, https://doi.org/10.5194/soil-10-275-2024, https://doi.org/10.5194/soil-10-275-2024, 2024
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Soil C saturation has been tested in several recent studies and led to a debate about its existence. We argue that, to test C saturation, one should pay attention to six fundamental principles: the right measures, the right units, the right dispersive energy and application, the right soil type, the right clay type, and the right saturation level. Once we take care of those six rights across studies, we find support for a maximum of C stabilized by minerals and thus soil C saturation.
Andrés Tangarife-Escobar, Georg Guggenberger, Xiaojuan Feng, Guohua Dai, Carolina Urbina-Malo, Mina Azizi-Rad, and Carlos A. Sierra
Biogeosciences, 21, 1277–1299, https://doi.org/10.5194/bg-21-1277-2024, https://doi.org/10.5194/bg-21-1277-2024, 2024
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Soil organic matter stability depends on future temperature and precipitation scenarios. We used radiocarbon (14C) data and model predictions to understand how the transit time of carbon varies under environmental change in grasslands and peatlands. Soil moisture affected the Δ14C of peatlands, while temperature did not have any influence. Our models show the correspondence between Δ14C and transit time and could allow understanding future interactions between terrestrial and atmospheric carbon
Gina Garland, John Koestel, Alice Johannes, Olivier Heller, Sebastian Doetterl, Dani Or, and Thomas Keller
SOIL, 10, 23–31, https://doi.org/10.5194/soil-10-23-2024, https://doi.org/10.5194/soil-10-23-2024, 2024
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The concept of soil aggregates is hotly debated, leading to confusion about their function or relevancy to soil processes. We propose that the use of conceptual figures showing detached and isolated aggregates can be misleading and has contributed to this skepticism. Here, we conceptually illustrate how aggregates can form and dissipate within the context of undisturbed soils, highlighting the fact that aggregates do not necessarily need to have distinct physical boundaries.
Adriana Simonetti, Raquel Fernandes Araujo, Carlos Henrique Souza Celes, Flávia Ranara da Silva e Silva, Joaquim dos Santos, Niro Higuchi, Susan Trumbore, and Daniel Magnabosco Marra
Biogeosciences, 20, 3651–3666, https://doi.org/10.5194/bg-20-3651-2023, https://doi.org/10.5194/bg-20-3651-2023, 2023
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We combined 2 years of monthly drone-acquired RGB (red–green–blue) imagery with field surveys in a central Amazon forest. Our results indicate that small gaps associated with branch fall were the most frequent. Biomass losses were partially controlled by gap area, with branch fall and snapping contributing the least and greatest relative values, respectively. Our study highlights the potential of drone images for monitoring canopy dynamics in dense tropical forests.
Shane W. Stoner, Marion Schrumpf, Alison Hoyt, Carlos A. Sierra, Sebastian Doetterl, Valier Galy, and Susan Trumbore
Biogeosciences, 20, 3151–3163, https://doi.org/10.5194/bg-20-3151-2023, https://doi.org/10.5194/bg-20-3151-2023, 2023
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Soils store more carbon (C) than any other terrestrial C reservoir, but the processes that control how much C stays in soil, and for how long, are very complex. Here, we used a recent method that involves heating soil in the lab to measure the range of C ages in soil. We found that most C in soil is decades to centuries old, while some stays for much shorter times (days to months), and some is thousands of years old. Such detail helps us to estimate how soil C may react to changing climate.
Alexander J. Norton, A. Anthony Bloom, Nicholas C. Parazoo, Paul A. Levine, Shuang Ma, Renato K. Braghiere, and T. Luke Smallman
Biogeosciences, 20, 2455–2484, https://doi.org/10.5194/bg-20-2455-2023, https://doi.org/10.5194/bg-20-2455-2023, 2023
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This study explores how the representation of leaf phenology affects our ability to predict changes to the carbon balance of land ecosystems. We calibrate a new leaf phenology model against a diverse range of observations at six forest sites, showing that it improves the predictive capability of the processes underlying the ecosystem carbon balance. We then show how changes in temperature and rainfall affect the ecosystem carbon balance with this new model.
Mélissa Laurent, Matthias Fuchs, Tanja Herbst, Alexandra Runge, Susanne Liebner, and Claire C. Treat
Biogeosciences, 20, 2049–2064, https://doi.org/10.5194/bg-20-2049-2023, https://doi.org/10.5194/bg-20-2049-2023, 2023
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In this study we investigated the effect of different parameters (temperature, landscape position) on the production of greenhouse gases during a 1-year permafrost thaw experiment. For very similar carbon and nitrogen contents, our results show a strong heterogeneity in CH4 production, as well as in microbial abundance. According to our study, these differences are mainly due to the landscape position and the hydrological conditions established as a result of the topography.
Agustín Sarquis and Carlos A. Sierra
Biogeosciences, 20, 1759–1771, https://doi.org/10.5194/bg-20-1759-2023, https://doi.org/10.5194/bg-20-1759-2023, 2023
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Although plant litter is chemically and physically heterogenous and undergoes multiple transformations, models that represent litter dynamics often ignore this complexity. We used a multi-model inference framework to include information content in litter decomposition datasets and studied the time it takes for litter to decompose as measured by the transit time. In arid lands, the median transit time of litter is about 3 years and has a negative correlation with mean annual temperature.
Song Wang, Carlos Sierra, Yiqi Luo, Jinsong Wang, Weinan Chen, Yahai Zhang, Aizhong Ye, and Shuli Niu
Biogeosciences Discuss., https://doi.org/10.5194/bg-2023-33, https://doi.org/10.5194/bg-2023-33, 2023
Manuscript not accepted for further review
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Nitrogen is important for plant growth and carbon uptake, which is uaually limited in nature and can constrain carbon storage and impact efforts to combat climate change. We developed a new method of combining data and models to determine if and how much an ecosystem is nitrogen limited. This new method can help determine if and to what extent an ecosystem is nitrogen-limited, providing insight into nutrient limitations on a global scale and guiding ecosystem management decisions.
Andrea Scheibe, Carlos A. Sierra, and Marie Spohn
Biogeosciences, 20, 827–838, https://doi.org/10.5194/bg-20-827-2023, https://doi.org/10.5194/bg-20-827-2023, 2023
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We explored carbon cycling in soils in three climate zones in Chile down to a depth of 6 m, using carbon isotopes. Our results show that microbial activity several meters below the soil surface is mostly fueled by recently fixed carbon and that strong decomposition of soil organic matter only occurs in the upper decimeters of the soils. The study shows that different layers of the critical zone are tightly connected and that processes in the deep soil depend on recently fixed carbon.
Jeffrey Prescott Beem-Miller, Craig Rasmussen, Alison May Hoyt, Marion Schrumpf, Georg Guggenberger, and Susan Trumbore
EGUsphere, https://doi.org/10.5194/egusphere-2022-1083, https://doi.org/10.5194/egusphere-2022-1083, 2022
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We compared the age of persistent soil organic matter as well as active emissions of carbon dioxide from soils across a gradient of climate and geology. We found that clay minerals are more important than mean annual temperature for both persistent and actively cycling soil carbon, and that they may attenuate the sensitivity of soil organic matter decomposition to temperature. Accounting for geology and soil development could therefore improve estimates of soil carbon stocks and changes.
J. Robert Logan, Kathe E. Todd-Brown, Kathryn M. Jacobson, Peter J. Jacobson, Roland Vogt, and Sarah E. Evans
Biogeosciences, 19, 4129–4146, https://doi.org/10.5194/bg-19-4129-2022, https://doi.org/10.5194/bg-19-4129-2022, 2022
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Understanding how plants decompose is important for understanding where the atmospheric CO2 they absorb ends up after they die. In forests, decomposition is controlled by rain but not in deserts. We performed a 2.5-year study in one of the driest places on earth (the Namib desert in southern Africa) and found that fog and dew, not rainfall, closely controlled how quickly plants decompose. We also created a model to help predict decomposition in drylands with lots of fog and/or dew.
Rachael Akinyede, Martin Taubert, Marion Schrumpf, Susan Trumbore, and Kirsten Küsel
Biogeosciences, 19, 4011–4028, https://doi.org/10.5194/bg-19-4011-2022, https://doi.org/10.5194/bg-19-4011-2022, 2022
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Soils will likely become warmer in the future, and this can increase the release of carbon dioxide (CO2) into the atmosphere. As microbes can take up soil CO2 and prevent further escape into the atmosphere, this study compares the rate of uptake and release of CO2 at two different temperatures. With warming, the rate of CO2 uptake increases less than the rate of release, indicating that the capacity to modulate soil CO2 release into the atmosphere will decrease under future warming.
Solène Quéro, Christine Hatté, Sophie Cornu, Adrien Duvivier, Nithavong Cam, Floriane Jamoteau, Daniel Borschneck, and Isabelle Basile-Doelsch
SOIL, 8, 517–539, https://doi.org/10.5194/soil-8-517-2022, https://doi.org/10.5194/soil-8-517-2022, 2022
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Although present in food security key areas, Arenosols carbon stocks are barely studied. A 150-year-old land use change in a Mediterranean Arenosol showed a loss from 50 Gt C ha-1 to 3 Gt C ha-1 after grape cultivation. 14C showed that deep ploughing in a vineyard plot redistributed the remaining microbial carbon both vertically and horizontally. Despite the drastic degradation of the organic matter pool, Arenosols would have a high carbon storage potential, targeting the 4 per 1000 initiative.
Carlos A. Sierra, Verónika Ceballos-Núñez, Henrik Hartmann, David Herrera-Ramírez, and Holger Metzler
Biogeosciences, 19, 3727–3738, https://doi.org/10.5194/bg-19-3727-2022, https://doi.org/10.5194/bg-19-3727-2022, 2022
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Empirical work that estimates the age of respired CO2 from vegetation tissue shows that it may take from years to decades to respire previously produced photosynthates. However, many ecosystem models represent respiration processes in a form that cannot reproduce these observations. In this contribution, we attempt to provide compelling evidence, based on recent research, with the aim to promote a change in the predominant paradigm implemented in ecosystem models.
Agustín Sarquis, Ignacio Andrés Siebenhart, Amy Theresa Austin, and Carlos A. Sierra
Earth Syst. Sci. Data, 14, 3471–3488, https://doi.org/10.5194/essd-14-3471-2022, https://doi.org/10.5194/essd-14-3471-2022, 2022
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Plant litter breakdown in aridlands is driven by processes different from those in more humid ecosystems. A better understanding of these processes will allow us to make better predictions of future carbon cycling. We have compiled aridec, a database of plant litter decomposition studies in aridlands and tested some modeling applications for potential users. Aridec is open for use and collaboration, and we hope it will help answer newer and more important questions as the database develops.
Katherine E. O. Todd-Brown, Rose Z. Abramoff, Jeffrey Beem-Miller, Hava K. Blair, Stevan Earl, Kristen J. Frederick, Daniel R. Fuka, Mario Guevara Santamaria, Jennifer W. Harden, Katherine Heckman, Lillian J. Heran, James R. Holmquist, Alison M. Hoyt, David H. Klinges, David S. LeBauer, Avni Malhotra, Shelby C. McClelland, Lucas E. Nave, Katherine S. Rocci, Sean M. Schaeffer, Shane Stoner, Natasja van Gestel, Sophie F. von Fromm, and Marisa L. Younger
Biogeosciences, 19, 3505–3522, https://doi.org/10.5194/bg-19-3505-2022, https://doi.org/10.5194/bg-19-3505-2022, 2022
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Research data are becoming increasingly available online with tantalizing possibilities for reanalysis. However harmonizing data from different sources remains challenging. Using the soils community as an example, we walked through the various strategies that researchers currently use to integrate datasets for reanalysis. We find that manual data transcription is still extremely common and that there is a critical need for community-supported informatics tools like vocabularies and ontologies.
Niel Verbrigghe, Niki I. W. Leblans, Bjarni D. Sigurdsson, Sara Vicca, Chao Fang, Lucia Fuchslueger, Jennifer L. Soong, James T. Weedon, Christopher Poeplau, Cristina Ariza-Carricondo, Michael Bahn, Bertrand Guenet, Per Gundersen, Gunnhildur E. Gunnarsdóttir, Thomas Kätterer, Zhanfeng Liu, Marja Maljanen, Sara Marañón-Jiménez, Kathiravan Meeran, Edda S. Oddsdóttir, Ivika Ostonen, Josep Peñuelas, Andreas Richter, Jordi Sardans, Páll Sigurðsson, Margaret S. Torn, Peter M. Van Bodegom, Erik Verbruggen, Tom W. N. Walker, Håkan Wallander, and Ivan A. Janssens
Biogeosciences, 19, 3381–3393, https://doi.org/10.5194/bg-19-3381-2022, https://doi.org/10.5194/bg-19-3381-2022, 2022
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In subarctic grassland on a geothermal warming gradient, we found large reductions in topsoil carbon stocks, with carbon stocks linearly declining with warming intensity. Most importantly, however, we observed that soil carbon stocks stabilised within 5 years of warming and remained unaffected by warming thereafter, even after > 50 years of warming. Moreover, in contrast to the large topsoil carbon losses, subsoil carbon stocks remained unaffected after > 50 years of soil warming.
Moritz Mainka, Laura Summerauer, Daniel Wasner, Gina Garland, Marco Griepentrog, Asmeret Asefaw Berhe, and Sebastian Doetterl
Biogeosciences, 19, 1675–1689, https://doi.org/10.5194/bg-19-1675-2022, https://doi.org/10.5194/bg-19-1675-2022, 2022
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The largest share of terrestrial carbon is stored in soils, making them highly relevant as regards global change. Yet, the mechanisms governing soil carbon stabilization are not well understood. The present study contributes to a better understanding of these processes. We show that qualitative changes in soil organic matter (SOM) co-vary with alterations of the soil matrix following soil weathering. Hence, the type of SOM that is stabilized in soils might change as soils develop.
Elias C. Massoud, A. Anthony Bloom, Marcos Longo, John T. Reager, Paul A. Levine, and John R. Worden
Hydrol. Earth Syst. Sci., 26, 1407–1423, https://doi.org/10.5194/hess-26-1407-2022, https://doi.org/10.5194/hess-26-1407-2022, 2022
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The water balance on river basin scales depends on a number of soil physical processes. Gaining information on these quantities using observations is a key step toward improving the skill of land surface hydrology models. In this study, we use data from the Gravity Recovery and Climate Experiment (NASA-GRACE) to inform and constrain these hydrologic processes. We show that our model is able to simulate the land hydrologic cycle for a watershed in the Amazon from January 2003 to December 2012.
Yan Yang, A. Anthony Bloom, Shuang Ma, Paul Levine, Alexander Norton, Nicholas C. Parazoo, John T. Reager, John Worden, Gregory R. Quetin, T. Luke Smallman, Mathew Williams, Liang Xu, and Sassan Saatchi
Geosci. Model Dev., 15, 1789–1802, https://doi.org/10.5194/gmd-15-1789-2022, https://doi.org/10.5194/gmd-15-1789-2022, 2022
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Global carbon and water have large uncertainties that are hard to quantify in current regional and global models. Field observations provide opportunities for better calibration and validation of current modeling of carbon and water. With the unique structure of CARDAMOM, we have utilized the data assimilation capability and designed the benchmarking framework by using field observations in modeling. Results show that data assimilation improves model performance in different aspects.
Karis J. McFarlane, Heather M. Throckmorton, Jeffrey M. Heikoop, Brent D. Newman, Alexandra L. Hedgpeth, Marisa N. Repasch, Thomas P. Guilderson, and Cathy J. Wilson
Biogeosciences, 19, 1211–1223, https://doi.org/10.5194/bg-19-1211-2022, https://doi.org/10.5194/bg-19-1211-2022, 2022
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Planetary warming is increasing seasonal thaw of permafrost, making this extensive old carbon stock vulnerable. In northern Alaska, we found more and older dissolved organic carbon in small drainages later in summer as more permafrost was exposed by deepening thaw. Younger and older carbon did not differ in chemical indicators related to biological lability suggesting this carbon can cycle through aquatic systems and contribute to greenhouse gas emissions as warming increases permafrost thaw.
Daniel Rath, Nathaniel Bogie, Leonardo Deiss, Sanjai J. Parikh, Daoyuan Wang, Samantha Ying, Nicole Tautges, Asmeret Asefaw Berhe, Teamrat A. Ghezzehei, and Kate M. Scow
SOIL, 8, 59–83, https://doi.org/10.5194/soil-8-59-2022, https://doi.org/10.5194/soil-8-59-2022, 2022
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Storing C in subsoils can help mitigate climate change, but this requires a better understanding of subsoil C dynamics. We investigated changes in subsoil C storage under a combination of compost, cover crops (WCC), and mineral fertilizer and found that systems with compost + WCC had ~19 Mg/ha more C after 25 years. This increase was attributed to increased transport of soluble C and nutrients via WCC root pores and demonstrates the potential for subsoil C storage in tilled agricultural systems.
Papa Mamadou Sitor Ndour, Christine Hatté, Wafa Achouak, Thierry Heulin, and Laurent Cournac
SOIL, 8, 49–57, https://doi.org/10.5194/soil-8-49-2022, https://doi.org/10.5194/soil-8-49-2022, 2022
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Unravelling relationships between plant rhizosheath, root exudation and soil C dynamic may bring interesting perspectives in breeding for sustainable agriculture. Using four pearl millet lines with contrasting rhizosheaths, we found that δ13C and F14C of root-adhering soil differed from those of bulk and control soil, indicating C exudation in the rhizosphere. This C exudation varied according to the genotype, and conceptual modelling performed with data showed a genotypic effect on the RPE.
Pengzhi Zhao, Daniel Joseph Fallu, Sara Cucchiaro, Paolo Tarolli, Clive Waddington, David Cockcroft, Lisa Snape, Andreas Lang, Sebastian Doetterl, Antony G. Brown, and Kristof Van Oost
Biogeosciences, 18, 6301–6312, https://doi.org/10.5194/bg-18-6301-2021, https://doi.org/10.5194/bg-18-6301-2021, 2021
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We investigate the factors controlling the soil organic carbon (SOC) stability and temperature sensitivity of abandoned prehistoric agricultural terrace soils. Results suggest that the burial of former topsoil due to terracing provided an SOC stabilization mechanism. Both the soil C : N ratio and SOC mineral protection regulate soil SOC temperature sensitivity. However, which mechanism predominantly controls SOC temperature sensitivity depends on the age of the buried terrace soils.
David Olefeldt, Mikael Hovemyr, McKenzie A. Kuhn, David Bastviken, Theodore J. Bohn, John Connolly, Patrick Crill, Eugénie S. Euskirchen, Sarah A. Finkelstein, Hélène Genet, Guido Grosse, Lorna I. Harris, Liam Heffernan, Manuel Helbig, Gustaf Hugelius, Ryan Hutchins, Sari Juutinen, Mark J. Lara, Avni Malhotra, Kristen Manies, A. David McGuire, Susan M. Natali, Jonathan A. O'Donnell, Frans-Jan W. Parmentier, Aleksi Räsänen, Christina Schädel, Oliver Sonnentag, Maria Strack, Suzanne E. Tank, Claire Treat, Ruth K. Varner, Tarmo Virtanen, Rebecca K. Warren, and Jennifer D. Watts
Earth Syst. Sci. Data, 13, 5127–5149, https://doi.org/10.5194/essd-13-5127-2021, https://doi.org/10.5194/essd-13-5127-2021, 2021
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Wetlands, lakes, and rivers are important sources of the greenhouse gas methane to the atmosphere. To understand current and future methane emissions from northern regions, we need maps that show the extent and distribution of specific types of wetlands, lakes, and rivers. The Boreal–Arctic Wetland and Lake Dataset (BAWLD) provides maps of five wetland types, seven lake types, and three river types for northern regions and will improve our ability to predict future methane emissions.
Laura Summerauer, Philipp Baumann, Leonardo Ramirez-Lopez, Matti Barthel, Marijn Bauters, Benjamin Bukombe, Mario Reichenbach, Pascal Boeckx, Elizabeth Kearsley, Kristof Van Oost, Bernard Vanlauwe, Dieudonné Chiragaga, Aimé Bisimwa Heri-Kazi, Pieter Moonen, Andrew Sila, Keith Shepherd, Basile Bazirake Mujinya, Eric Van Ranst, Geert Baert, Sebastian Doetterl, and Johan Six
SOIL, 7, 693–715, https://doi.org/10.5194/soil-7-693-2021, https://doi.org/10.5194/soil-7-693-2021, 2021
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We present a soil mid-infrared library with over 1800 samples from central Africa in order to facilitate soil analyses of this highly understudied yet critical area. Together with an existing continental library, we demonstrate a regional analysis and geographical extrapolation to predict total carbon and nitrogen. Our results show accurate predictions and highlight the value that the data contribute to existing libraries. Our library is openly available for public use and for expansion.
Claude-Michel Nzotungicimpaye, Kirsten Zickfeld, Andrew H. MacDougall, Joe R. Melton, Claire C. Treat, Michael Eby, and Lance F. W. Lesack
Geosci. Model Dev., 14, 6215–6240, https://doi.org/10.5194/gmd-14-6215-2021, https://doi.org/10.5194/gmd-14-6215-2021, 2021
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In this paper, we describe a new wetland methane model (WETMETH) developed for use in Earth system models. WETMETH consists of simple formulations to represent methane production and oxidation in wetlands. We also present an evaluation of the model performance as embedded in the University of Victoria Earth System Climate Model (UVic ESCM). WETMETH is capable of reproducing mean annual methane emissions consistent with present-day estimates from the regional to the global scale.
Benjamin Bukombe, Peter Fiener, Alison M. Hoyt, Laurent K. Kidinda, and Sebastian Doetterl
SOIL, 7, 639–659, https://doi.org/10.5194/soil-7-639-2021, https://doi.org/10.5194/soil-7-639-2021, 2021
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Through a laboratory incubation experiment, we investigated the spatial patterns of specific maximum heterotrophic respiration in tropical African mountain forest soils developed from contrasting parent material along slope gradients. We found distinct differences in soil respiration between soil depths and geochemical regions related to soil fertility and the chemistry of the soil solution. The topographic origin of our samples was not a major determinant of the observed rates of respiration.
Sebastian Doetterl, Rodrigue K. Asifiwe, Geert Baert, Fernando Bamba, Marijn Bauters, Pascal Boeckx, Benjamin Bukombe, Georg Cadisch, Matthew Cooper, Landry N. Cizungu, Alison Hoyt, Clovis Kabaseke, Karsten Kalbitz, Laurent Kidinda, Annina Maier, Moritz Mainka, Julia Mayrock, Daniel Muhindo, Basile B. Mujinya, Serge M. Mukotanyi, Leon Nabahungu, Mario Reichenbach, Boris Rewald, Johan Six, Anna Stegmann, Laura Summerauer, Robin Unseld, Bernard Vanlauwe, Kristof Van Oost, Kris Verheyen, Cordula Vogel, Florian Wilken, and Peter Fiener
Earth Syst. Sci. Data, 13, 4133–4153, https://doi.org/10.5194/essd-13-4133-2021, https://doi.org/10.5194/essd-13-4133-2021, 2021
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The African Tropics are hotspots of modern-day land use change and are of great relevance for the global carbon cycle. Here, we present data collected as part of the DFG-funded project TropSOC along topographic, land use, and geochemical gradients in the eastern Congo Basin and the Albertine Rift. Our database contains spatial and temporal data on soil, vegetation, environmental properties, and land management collected from 136 pristine tropical forest and cropland plots between 2017 and 2020.
Mario Reichenbach, Peter Fiener, Gina Garland, Marco Griepentrog, Johan Six, and Sebastian Doetterl
SOIL, 7, 453–475, https://doi.org/10.5194/soil-7-453-2021, https://doi.org/10.5194/soil-7-453-2021, 2021
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In deeply weathered tropical rainforest soils of Africa, we found that patterns of soil organic carbon stocks differ between soils developed from geochemically contrasting parent material due to differences in the abundance of organo-mineral complexes, the presence/absence of chemical stabilization mechanisms of carbon with minerals and the presence of fossil organic carbon from sedimentary rocks. Physical stabilization mechanisms by aggregation provide additional protection of soil carbon.
Cyrill U. Zosso, Nicholas O. E. Ofiti, Jennifer L. Soong, Emily F. Solly, Margaret S. Torn, Arnaud Huguet, Guido L. B. Wiesenberg, and Michael W. I. Schmidt
SOIL, 7, 477–494, https://doi.org/10.5194/soil-7-477-2021, https://doi.org/10.5194/soil-7-477-2021, 2021
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How subsoil microorganisms respond to warming is largely unknown, despite their crucial role in the soil organic carbon cycle. We observed that the subsoil microbial community composition was more responsive to warming compared to the topsoil community composition. Decreased microbial abundance in subsoils, as observed in this study, might reduce the magnitude of the respiration response over time, and a shift in the microbial community will likely affect the cycling of soil organic carbon.
Kyle B. Delwiche, Sara Helen Knox, Avni Malhotra, Etienne Fluet-Chouinard, Gavin McNicol, Sarah Feron, Zutao Ouyang, Dario Papale, Carlo Trotta, Eleonora Canfora, You-Wei Cheah, Danielle Christianson, Ma. Carmelita R. Alberto, Pavel Alekseychik, Mika Aurela, Dennis Baldocchi, Sheel Bansal, David P. Billesbach, Gil Bohrer, Rosvel Bracho, Nina Buchmann, David I. Campbell, Gerardo Celis, Jiquan Chen, Weinan Chen, Housen Chu, Higo J. Dalmagro, Sigrid Dengel, Ankur R. Desai, Matteo Detto, Han Dolman, Elke Eichelmann, Eugenie Euskirchen, Daniela Famulari, Kathrin Fuchs, Mathias Goeckede, Sébastien Gogo, Mangaliso J. Gondwe, Jordan P. Goodrich, Pia Gottschalk, Scott L. Graham, Martin Heimann, Manuel Helbig, Carole Helfter, Kyle S. Hemes, Takashi Hirano, David Hollinger, Lukas Hörtnagl, Hiroki Iwata, Adrien Jacotot, Gerald Jurasinski, Minseok Kang, Kuno Kasak, John King, Janina Klatt, Franziska Koebsch, Ken W. Krauss, Derrick Y. F. Lai, Annalea Lohila, Ivan Mammarella, Luca Belelli Marchesini, Giovanni Manca, Jaclyn Hatala Matthes, Trofim Maximov, Lutz Merbold, Bhaskar Mitra, Timothy H. Morin, Eiko Nemitz, Mats B. Nilsson, Shuli Niu, Walter C. Oechel, Patricia Y. Oikawa, Keisuke Ono, Matthias Peichl, Olli Peltola, Michele L. Reba, Andrew D. Richardson, William Riley, Benjamin R. K. Runkle, Youngryel Ryu, Torsten Sachs, Ayaka Sakabe, Camilo Rey Sanchez, Edward A. Schuur, Karina V. R. Schäfer, Oliver Sonnentag, Jed P. Sparks, Ellen Stuart-Haëntjens, Cove Sturtevant, Ryan C. Sullivan, Daphne J. Szutu, Jonathan E. Thom, Margaret S. Torn, Eeva-Stiina Tuittila, Jessica Turner, Masahito Ueyama, Alex C. Valach, Rodrigo Vargas, Andrej Varlagin, Alma Vazquez-Lule, Joseph G. Verfaillie, Timo Vesala, George L. Vourlitis, Eric J. Ward, Christian Wille, Georg Wohlfahrt, Guan Xhuan Wong, Zhen Zhang, Donatella Zona, Lisamarie Windham-Myers, Benjamin Poulter, and Robert B. Jackson
Earth Syst. Sci. Data, 13, 3607–3689, https://doi.org/10.5194/essd-13-3607-2021, https://doi.org/10.5194/essd-13-3607-2021, 2021
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Methane is an important greenhouse gas, yet we lack knowledge about its global emissions and drivers. We present FLUXNET-CH4, a new global collection of methane measurements and a critical resource for the research community. We use FLUXNET-CH4 data to quantify the seasonality of methane emissions from freshwater wetlands, finding that methane seasonality varies strongly with latitude. Our new database and analysis will improve wetland model accuracy and inform greenhouse gas budgets.
Joseph Tamale, Roman Hüppi, Marco Griepentrog, Laban Frank Turyagyenda, Matti Barthel, Sebastian Doetterl, Peter Fiener, and Oliver van Straaten
SOIL, 7, 433–451, https://doi.org/10.5194/soil-7-433-2021, https://doi.org/10.5194/soil-7-433-2021, 2021
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Soil greenhouse gas (GHG) fluxes were measured monthly from nitrogen (N), phosphorous (P), N and P, and control plots of the first nutrient manipulation experiment located in an African pristine tropical forest using static chambers. The results suggest (1) contrasting soil GHG responses to nutrient addition, hence highlighting the complexity of the tropical forests, and (2) that the feedback of tropical forests to the global soil GHG budget could be altered by changes in N and P availability.
Florian Wilken, Peter Fiener, Michael Ketterer, Katrin Meusburger, Daniel Iragi Muhindo, Kristof van Oost, and Sebastian Doetterl
SOIL, 7, 399–414, https://doi.org/10.5194/soil-7-399-2021, https://doi.org/10.5194/soil-7-399-2021, 2021
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This study demonstrates the usability of fallout radionuclides 239Pu and 240Pu as a tool to assess soil degradation processes in tropical Africa, which is particularly valuable in regions with limited infrastructure and challenging monitoring conditions for landscape-scale soil degradation monitoring. The study shows no indication of soil redistribution in forest sites but substantial soil redistribution in cropland (sedimentation >40 cm in 55 years) with high variability.
Sophie F. von Fromm, Alison M. Hoyt, Markus Lange, Gifty E. Acquah, Ermias Aynekulu, Asmeret Asefaw Berhe, Stephan M. Haefele, Steve P. McGrath, Keith D. Shepherd, Andrew M. Sila, Johan Six, Erick K. Towett, Susan E. Trumbore, Tor-G. Vågen, Elvis Weullow, Leigh A. Winowiecki, and Sebastian Doetterl
SOIL, 7, 305–332, https://doi.org/10.5194/soil-7-305-2021, https://doi.org/10.5194/soil-7-305-2021, 2021
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We investigated various soil and climate properties that influence soil organic carbon (SOC) concentrations in sub-Saharan Africa. Our findings indicate that climate and geochemistry are equally important for explaining SOC variations. The key SOC-controlling factors are broadly similar to those for temperate regions, despite differences in soil development history between the two regions.
Caroline A. Famiglietti, T. Luke Smallman, Paul A. Levine, Sophie Flack-Prain, Gregory R. Quetin, Victoria Meyer, Nicholas C. Parazoo, Stephanie G. Stettz, Yan Yang, Damien Bonal, A. Anthony Bloom, Mathew Williams, and Alexandra G. Konings
Biogeosciences, 18, 2727–2754, https://doi.org/10.5194/bg-18-2727-2021, https://doi.org/10.5194/bg-18-2727-2021, 2021
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Model uncertainty dominates the spread in terrestrial carbon cycle predictions. Efforts to reduce it typically involve adding processes, thereby increasing model complexity. However, if and how model performance scales with complexity is unclear. Using a suite of 16 structurally distinct carbon cycle models, we find that increased complexity only improves skill if parameters are adequately informed. Otherwise, it can degrade skill, and an intermediate-complexity model is optimal.
Marion Schrumpf, Klaus Kaiser, Allegra Mayer, Günter Hempel, and Susan Trumbore
Biogeosciences, 18, 1241–1257, https://doi.org/10.5194/bg-18-1241-2021, https://doi.org/10.5194/bg-18-1241-2021, 2021
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A large amount of organic carbon (OC) in soil is protected against decay by bonding to minerals. We studied the release of mineral-bonded OC by NaF–NaOH extraction and H2O2 oxidation. Unexpectedly, extraction and oxidation removed mineral-bonded OC at roughly constant portions and of similar age distributions, irrespective of mineral composition, land use, and soil depth. The results suggest uniform modes of interactions between OC and minerals across soils in quasi-steady state with inputs.
Severin-Luca Bellè, Asmeret Asefaw Berhe, Frank Hagedorn, Cristina Santin, Marcus Schiedung, Ilja van Meerveld, and Samuel Abiven
Biogeosciences, 18, 1105–1126, https://doi.org/10.5194/bg-18-1105-2021, https://doi.org/10.5194/bg-18-1105-2021, 2021
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Controls of pyrogenic carbon (PyC) redistribution under rainfall are largely unknown. However, PyC mobility can be substantial after initial rain in post-fire landscapes. We conducted a controlled simulation experiment on plots where PyC was applied on the soil surface. We identified redistribution of PyC by runoff and splash and vertical movement in the soil depending on soil texture and PyC characteristics (material and size). PyC also induced changes in exports of native soil organic carbon.
Carlos A. Sierra, Susan E. Crow, Martin Heimann, Holger Metzler, and Ernst-Detlef Schulze
Biogeosciences, 18, 1029–1048, https://doi.org/10.5194/bg-18-1029-2021, https://doi.org/10.5194/bg-18-1029-2021, 2021
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The climate benefit of carbon sequestration (CBS) is a metric developed to quantify avoided warming by two separate processes: the amount of carbon drawdown from the atmosphere and the time this carbon is stored in a reservoir. This metric can be useful for quantifying the role of forests and soils for climate change mitigation and to better quantify the benefits of carbon removals by sinks.
Cited articles
Angst, G., Kögel-Knabner, I., Kirfel, K., Hertel, D., and Mueller, C. W.:
Spatial distribution and chemical composition of soil organic matter
fractions in rhizosphere and non-rhizosphere soil under European beech
(Fagus sylvatica L.), Geoderma, 264, 179–187,
https://doi.org/10.1016/j.geoderma.2015.10.016, 2016.
Balesdent, J.: The turnover of soil organic fractions estimated by
radiocarbon dating, Sci. Total Environ., 62, 405–408, 1987.
Baisden, W. T. and Amundson, R.: An analytical approach to ecosystem
biogeochemistry modeling, Ecol. Appl., 13, 649–663, 2003.
Baisden, W. T. and Keller, E. D.: Synthetic Constraint of Soil C dynamics
Using 50 Years of Radiocarbon and Net Primary Production (NPP) in a New
Zealand Grassland Site, Radiocarbon, 55, 1071–1076. 2013.
Baisden, W. T., Amundson, R., Brenner, D. L., Cook, A. C., Kendall, C., and Harden, J.: A Multi-Isotope C and N Modeling Analysis of Soil Organic Matter Turnover and Transport as a Function of Soil Depth in a California Annual Grassland
Soil Chronosequence, Global Biogeochem. Cy., 16, 1135, https://doi.org/10.1029/2001GB001823, 2002a.
Baisden, W. T., Amundson, R., Cook, A. C., and Brenner, D. L.: The turnover and storage of C and N in five density fractions from California annual
grassland surface soil, Global Biogeochem. Cy., 16, 1117, https://doi.org/10.1029/2001GB001822, 2002b.
Baisden, W. T., Parfitt, R. L., Ross, C., Schipper, L. A., and Canessa, S.:
Evaluating 50 years of time-series soil radiocarbon data: towards routine
calculation of robust C residence times, Biogeochemistry, 112,
129–137, https://doi.org/10.1007/s10533-011-9675-y, 2013.
Basile-Doelsch, I., Brun, T., Borschneck, D., Masion, A., Marol, C., and
Balesdent, J.: Effect of landuse on organic matter stabilized in
organomineral complexes: A study combining density fractionation, mineralogy
and delta C-13, Geoderma, 151, 77–86,
https://doi.org/10.1016/j.geoderma.2009.03.008, 2009.
Becker-Heidmann, P.: Requirements for An International Radiocarbon Soils
Database, Radiocarbon, 38, 177–180, https://doi.org/10.1017/S0033822200017549,
1996.
Becker-Heidmann, P.: A new attempt to establish the international radiocarbon
soils database (IRSDB), Radiocarbon, 52, 1405–1410, 2010.
Blankinship, J. C., Berhe, A. A., Crow, S. E., Druhan, J. L., Heckman, K. A.,
Keiluweit, M., Lawrence, C. R., Marin-Spiotta, E., Plante, A. F., Rasmussen,
C., Schädel, C., Schimel, J. P., Sierra, C. A., Wagai, R., and Wieder,
W. R.: Improving understanding of soil organic matter dynamics by
triangulating theories, measurements, and models, Biogeochemistry, 140,
1–13, https://doi.org/10.1007/s10533-018-0478-2, 2018.
Braakhekke, M. C., Guggenberger, G., Schrumpf, M., and Reichstein, M.:
Contribution of sorption, DOC transport and microbial interactions to the
14C age of a soil organic carbon profile: Insights from a calibrated process
model, Soil Biol. Biochem., 88, 390–402,
https://doi.org/10.1016/j.soilbio.2015.06.008, 2015.
Bradford, M. A., Wieder, W. R., Bonan, G. B., Fierer, N., Raymond, P. A., and
Crowther, T. W.: Managing uncertainty in soil carbon feedbacks to climate
change, Nat. Clim. Change, 6, 751–758, https://doi.org/10.1038/nclimate3071,
2016.
Broecker, W. S. and Olson, E. A.: Roadiocaronb from Nuclear Tests II,
Science, 132, 712–721, https://doi.org/10.1126/science.132.3429.712, 1960.
Cherkinskii, A. E.: Contemporary hypotheses of humification and radiocarbon
analyses of some types of soils, Dokl. Akad. Nauk. SSSR, 258,
993–996, 1981.
Crow, S. E., Swanston, C. W., Lajtha, K., Brooks, J. R., and Keirstead, H.:
Density fractionation of forest soils: methodological questions and
interpretation of incubation results and turnover time in an ecosystem
context, Biogeochemistry, 85, 69–90, https://doi.org/10.1007/s10533-007-9100-8,
2007.
Desjardins, T., Andreux, F., Volkoff, B., and Cerri, C. C.: Organic carbon and
13C contents in soils and soil size-fractions, and their changes due to
deforestation and pasture installation in eastern Amazonia, Geoderma,
61, 103–118, https://doi.org/10.1016/0016-7061(94)90013-2, 1994.
Gaudinski, J. B., Trumbore, S. E., Davidson, E. A., and Zheng, S. H.: Soil carbon cycling in a temperate forest: radiocarbon-based estimates of residence times, sequestration rates and partitioning of fluxes, Biogeochemistry, 51, 33–69, 2000.
Goh, K. M., Stout, J. D., and Rafter, T. A.: Radiocarbon enrichment of soil
organic-matter fractions in New Zealand soils, Soil Sci., 123,
385–391, 1977.
Golchin, A., Oades, J. M., Skjemstad, J. O., and Clarke, P.: Soil-Structure and Carbon Cycling, Aust. J. Soil Res., 32, 1043–1068, 1994.
Golchin, A., Oades, J. M., Skjemstad, J. O., and Clarke, P.: Structural and Dynamic Properties of Soil Organic-Matter as Reflected by C-13 Natural-Abundance,
Pyrolysis MassSpectrometry and Solid-State C-13 Nmr-Spectroscopy in Density
Fractions of an Oxisol under Forest and Pasture, Aust. J. Soil Res., 33, 59–76, 1995.
Harden, J. W., Hugelius, G., Blankinship, J. C., Bond-Lamberty, B., Lawrence,
C. R., Loisel, J., Malhotra, A., Jackson, R. B., Ogle, S., Phillips, C.,
Ryals, R., Todd-Brown, K., Vargas, R., Vergara, S. E., Cotrufo, M. F.,
Keiluweit, M., Heckman, K. A., Crow, S. E., Silver, W. L., DeLonge, M., and
Nave, L. E.: Networking our science to characterize the state,
vulnerabilities, and management opportunities of soil organic matter, Glob.
Change Biol., 348, 895–14, https://doi.org/10.1111/gcb.13896, 2017.
He, Y., Trumbore, S. E., Torn, M. S., Harden, J. W., Vaughn, L. J. S., Allison, S. D., and Randerson, J. T.: Radiocarbon constraints imply reduced carbon uptake by soils during the 21st century, Science, 355, 1419–1424,
https://doi.org/10.1126/science.aag0262, 2016.
Heckman, K., Lawrence, C. R., and Harden, J. W.: A sequential selective
dissolution method to quantify storage and stability of organic carbon
associated with Al and Fe hydroxide phases, Geoderma, 312, 24–35,
https://doi.org/10.1016/j.geoderma.2017.09.043, 2018.
Heimann, M. and Reichstein, M.: Terrestrial ecosystem carbon dynamics and
climate feedbacks, Nature, 451, 289–292, 2008.
Jackson, R. B., Lajtha, K., Crow, S. E., Hugelius, G., Kramer, M. G., and
Piñeiro, G.: The Ecology of Soil Carbon: Pools, Vulnerabilities, and
Biotic and Abiotic Controls, Annu. Rev. Ecol. Syst., 48, 419–445, https://doi.org/10.1146/annurev-ecolsys-112414-054234,
2017.
Jastrow, J. D., Amonette, J. E., and Bailey, V. L.: Mechanisms controlling soil carbon turnover and their potential application for enhancing carbon
sequestration, Clim. Change, 80, 5–23,
https://doi.org/10.1007/s10584-006-9178-3, 2006.
Kaiser, M., Ellerbrock, R. H., and Sommer, M.: Separation of coarse organic
particles from bulk surface soil samples by electrostatic attraction, Soil Sci. Soc. Am. J., 73, 2118–2130, 2009.
Kaiser, M. and Berhe, A. A.: How does sonication affect the mineral and
organic constituents of soil aggregates? – A review, J. Plant Nutr. Soil Sc., 177, 479–495, 2014.
Kaiser, K. and Kalbitz, K.: Cycling downwards – dissolved organic matter in
soils, Soil Biol. Biochem., 52, 29–32,
https://doi.org/10.1016/j.soilbio.2012.04.002, 2012.
Keiluweit, M., Nico, P. S., Kleber, M., and Fendorf, S.: Are oxygen
limitations under recognized regulators of organic carbon turnover in upland
soils, Biogeochemistry, 127, 157–171, https://doi.org/10.1007/s10533-015-0180-6,
2016.
Khomo, L., Trumbore, S., Bern, C. R., and Chadwick, O. A.: Timescales of carbon turnover in soils with mixed crystalline mineralogies, SOIL, 3, 17–30, https://doi.org/10.5194/soil-3-17-2017, 2017.
Lawrence, C. R., Beem-Miller, J., Hoyt, A. M., Monroe, G.,
Sierra, C. A., Stoner, S., Heckman, K., Blankinship, J.
C., Crow, S. E., McNicol, G., Trumbore, S., Levine, P. A.,
Vindušková, O., Todd-Brown, K., Rasmussen, C., Hick
Pries, C. E., Schädel, C., McFarlane, K., Doetterl,
S., Hatté, C., He, Y., Treat, C., Harden, J.
W., Torn, M. S., Estop-Aragonés, C., Berhe, A. A.,
Keiluweit, M., Marin-Spiotta, E., Plante, A. F., Thomson, A.,
Schimel, J. P., Vaughn, L. J. S., and Wagai, R.: International Soil
Radiocarbon Database v1.0, Zenodo, https://doi.org/10.5281/zenodo.2613911, 2019.
Lehmann, J. and Kleber, M.: The contentious nature of soil organic matter,
Nature, 1–9, https://doi.org/10.1038/nature16069, 2015.
Leinemann, T., Preusser, S., Mikutta, R., Kalbitz, K., Cerli, C.,
Höschen, C., Mueller, C. W., Kandeler, E., and Guggenberger, G.: Multiple
exchange processes on mineral surfaces control the transport of dissolved
organic matter through soil profiles, Soil Biol. Biochem., 118,
79–90, 2018.
Malhotra, A., Todd Brown, K., Nave, L. E., Batjes, N. H., Holmquist, J. R., Hoyt, A. M., Iversen, C. M., Jackson, R. B., Lajtha, K., Lawrence, C. R., Vindušková, O., Wieder, W., Williams, M., Hugelius, G., and Harden, J. W.: The landscape of soil carbon data: emerging questions, synergies and databases, Prog. Phys. Geog., 111, 707–719, https://doi.org/10.1177/0309133319873309, 2019.
Manzoni, S., Katul, G. G., and Porporato, A.: Analysis of soil carbon transit
times and age distributions using network theories, J. Geophys. Res., 114, G04025, https://doi.org/10.1029/2009JG001070, 2009.
Martel, Y. A. and Paul, E. A.: Effects of cultivation on organic-matter of grassland
soils as determined by fractionation and radiocarbon dating, Can.
J. Soil Sci., 54, 419–426, 1974.
Masiello, C., Chadwick, O. A., Southon, J., Torn, M., and Harden, J. W.:
Weathering controls on mechanisms of carbon storage in grassland soils,
Global Biogeochem. Cy., 18, GB4023, https://doi.org/10.1029/2004GB002219, 2004.
Mathieu, J. A., Hatté, C., Balesdent, J., and Parent, É.: Deep soil
carbon dynamics are driven more by soil type than by climate: a worldwide
meta-analysis of radiocarbon profiles, Glob. Change Biol., 21,
4278–4292, https://doi.org/10.1111/gcb.13012, 2015.
Minasny, B., Malone, B. P., McBratney, A. B., et al.: Soil carbon 4 per mille, Geoderma, 292, 59–86, 2017.
Moni, C., Derrien, D., Hatton, P.-J., Zeller, B., and Kleber, M.: Density fractions versus size separates: does physical fractionation isolate functional soil compartments?, Biogeosciences, 9, 5181–5197, https://doi.org/10.5194/bg-9-5181-2012, 2012.
Oades, J. M.: The Retention of Organic-Matter in Soils, Biogeochemistry,
5, 35–70, 1988.
O'Brien, B. J.: Soil organic-carbon fluxes and turnover rates estimated from
radiocarbon enrichments, Soil Biol. Biochem., 16, 115–120,
1984.
O'Brien, B. J. and Stout, J. D.: Movement and turnover of soil organic matter
as indicated by carbon isotope measurements, Soil Biol. Biochem.
10, 309–317, 1978.
Ohno, T., Heckman, K. A., Plante, A. F., Fernandez, I. J., and Parr, T. B.:
14C mean residence time and its relationship with thermal stability and
molecular composition of soil organic matter: A case study of deciduous and
coniferous forest types, Geoderma, 308, 1–8,
https://doi.org/10.1016/j.geoderma.2017.08.023, 2017.
Paul, E. A., Morris, S. J., and Böhm, S.: The determination of soil C pool
sizes and turnover rates: biophysical fractionation and tracers, in:
Assessment Methods for Soil Carbon, edited by: Lal, R., Lewis Publishers, New York, 193–206, 2001.
Plante, A. F., Conant, R. T., Stewart, C. E., Paustian, K., and Six, J.:
Impact of soil texture on the distribution of soil organic matter in
physical and chemical fractions, Soil Sci. Soc. Am. J.,
70, 287–296, 2006.
Poulton, P., Johnston, J., Macdonald, A., White, R., and Powlson, D.: Major
limitations to achieving “4 per 1000” increases in soil organic carbon
stock in temperate regions: Evidence from long-term experiments at
Rothamsted Research, UK, Glob. Change Biol., 24, 2563–2584,
2018.
Rumpel, C. and Kögel-Knabner, I.: Deep soil organic matter—a key but
poorly understood component of terrestrial C cycle, Plant Soil, 338,
143–158, https://doi.org/10.1007/s11104-010-0391-5. 2010.
Sanderman, J., Baldock, J., and Amundson, R.: Dissolved organic carbon chemistry
and dynamics in contrasting forest and grassland soils, Biogeochemistry,
89, 181–198, 2008.
Scharpenseel, H. W.: Radiocarbon dating of soils – problems, troubles, hopes, in: Paleopedology, edited by:
Yaalon, D. H., ISSS/Israel Univ. Press,
Jerusalem, 77–96 1971.
Schmidt, M. W. I., Torn, M. S., Abiven, S., Dittmar, T., Guggenberger, G.,
Janssens, I. A., Kleber, M., Kögel-Knabner, I., Manning, D. A. C.,
Nannipieri, P., Rasse, D. P., Weiner, S., and Trumbore, S. E.: Persistence of
soil organic matter as an ecosystem property, Nature, 478, 49–56,
https://doi.org/10.1038/nature10386, 2011.
Schrumpf, M., Kaiser, K., Guggenberger, G., Persson, T., Kögel-Knabner, I., and Schulze, E.-D.: Storage and stability of organic carbon in soils as related to depth, occlusion within aggregates, and attachment to minerals, Biogeosciences, 10, 1675–1691, https://doi.org/10.5194/bg-10-1675-2013, 2013.
Sierra, C. A., Müller, M., and Trumbore, S. E.: Models of soil organic matter decomposition: the SoilR package, version 1.0, Geosci. Model Dev., 5, 1045–1060, https://doi.org/10.5194/gmd-5-1045-2012, 2012.
Sierra, C. A., Müller, M., and Trumbore, S. E.: Modeling radiocarbon dynamics in soils: SoilR version 1.1, Geosci. Model Dev., 7, 1919–1931, https://doi.org/10.5194/gmd-7-1919-2014, 2014.
Sierra, C. A., Müller, M., Metzler, H., Manzoni, S., and Trumbore, S. E.:
The muddle of ages, turnover, transit, and residence times in the carbon
cycle, Glob. Change Biol., 23, 1763–1773, https://doi.org/10.1111/gcb.13556,
2017.
Six, J. and Paustian, K.: Soil Biology and Biochemistry, Soil Biol.
Biochem., 68, A4–A9, https://doi.org/10.1016/j.soilbio.2013.06.014, 2014.
Sollins, P., Swanston, C., Kleber, M., Filley, T., Kramer, M., Crow, S.,
Caldwell, B. A., Lajtha, K., and Bowden, R.: Organic C and N stabilization in
a forest soil: Evidence from sequential density fractionation, Soil Biol. Biochem., 38, 3313–3324, https://doi.org/10.1016/j.soilbio.2006.04.014,
2006.
Sollins, P., Kramer, M. G., Swanston, C., Lajtha, K., Filley, T.,
Aufdenkampe, A. K., Wagai, R., and Bowden, R. D.: Sequential density
fractionation across soils of contrasting mineralogy: evidence for both
microbial- and mineral-controlled soil organic matter stabilization,
Biogeochemistry, 96, 209–231, https://doi.org/10.1007/s10533-009-9359-z, 2009.
Sulman, B. N., Moore, J. A. M., Abramoff, R., Averill, C., Kivlin, S.,
Georgiou, K., Sridhar, B., Hartman, M. D., Wang, G., Wieder, W. R., Bradford,
M. A., Mayes, M. A., Morrison, E., Riley, W. J., Salazar, A., Schimel, J. P.,
Tang, J., and Classen, A. T.: Multiple models and experiments underscore large uncertainty in soil carbon dynamics, Biogeochemistry, 141, 1–15,
https://doi.org/10.1007/s10533-018-0509-z, 2018.
Swanston, C. W., Torn, M. S., Hanson, P. J., Southon, J. R., Garten, C. T., Hanlon, E. M., and Ganio, L.: Characterizing processes of soil carbon stabilization
using forest stand-level radiocarbon enrichment, Geoderma, 128, 52–62, 2005.
Szymanski, L. M., Sanford, G. R., Heckman, K., Jackson, R. D., and
Marín-Spiotta, E.: Conversion to bioenergy crops alters the amount and age of microbially-respired soil carbon, Soil Biol. Biochem., 128,
35–44, 2019.
Tamm, C. O. and Östlund, H. G.: Radiocarbon Dating of Soil Humus, Nature, 185, 706–707, 1960.
Torn, M. S., Vitousek, P. M., and Trumbore, S. E.: The influence of nutrient
availability on soil organic matter turnover estimated by incubations and
radiocarbon modeling, Ecosystems, 8, 352–372,
https://doi.org/10.1007/s10021-004-0259-5, 2005.
Trumbore, S. E.: Comparison of carbon dynamics in tropical and temperate soils using radiocarbon measurements, Global Biogeochem. Cy., 7, 275–290, 1993.
Trumbore, S. E.: Age of soil organic matter and soil respiration: Radiocarbon
constraints on belowground C dynamics, Ecol. Appl., 10,
399–411, 2000.
Trumbore, S. E.: Carbon respired by terrestrial ecosystems – recent progress
and challenges, Glob. Change Biol., 12, 141–153,
https://doi.org/10.1111/j.1365-2486.2005.01067.x, 2006.
Trumbore, S. E.: Radiocarbon and Soil Carbon Dynamics, Annu. Rev. Earth Planet. Sci., 37, 47–66, https://doi.org/10.1146/annurev.earth.36.031207.124300, 2009.
Trumbore, S. E. and Zheng, S.: Comparison of Fractionation Methods for Soil
Organic Matter 14C Analysis, Radiocarbon, 38, 219–229, 1996.
Trumbore, S., Torn, M., and Smith, L.: Constructing a database of terrestrial
radiocarbon measurements, Eos Trans. AGU, 92, 376, https://doi.org/10.1029/2011EO430006, 2011.
Ziegler, S. E., Benner, R., Billings, S. A., Edwards, K. A., Philben, M., Zhu, X., and Laganière, J.: Climate Warming Can Accelerate Carbon Fluxes
without Changing Soil Carbon Stocks, Front. Earth Sci., 5, 535–12,
https://doi.org/10.3389/feart.2017.00002, 2017.
Short summary
The International Soil Radiocarbon Database (ISRaD) is an an open-source archive of soil data focused on datasets including radiocarbon measurements. ISRaD includes data from bulk or
whole soils, distinct soil carbon pools isolated in the laboratory by a variety of soil fractionation methods, samples of soil gas or water collected interstitially from within an intact soil profile, CO2 gas isolated from laboratory soil incubations, and fluxes collected in situ from a soil surface.
The International Soil Radiocarbon Database (ISRaD) is an an open-source archive of soil data...
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