Articles | Volume 16, issue 18
https://doi.org/10.5194/bg-16-3665-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-3665-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
| 
27 Sep 2019
Research article | Highlight paper |
| 27 Sep 2019
| 27 Sep 2019
Physical constraints for respiration in microbial hotspots in soil and their importance for denitrification
Steffen Schlüter
CORRESPONDING AUTHOR
Department Soil System Sciences, Helmholtz-Centre for Environmental
Research – UFZ, Theodor-Lieser-Str. 4, 06120 Halle, Germany
Jan Zawallich
Institute of Mathematics, TU Clausthal, Erzstr. 1,
Clausthal-Zellerfeld, Germany
Hans-Jörg Vogel
Department Soil System Sciences, Helmholtz-Centre for Environmental
Research – UFZ, Theodor-Lieser-Str. 4, 06120 Halle, Germany
Peter Dörsch
Faculty of Environmental Sciences and Natural Resource Management,
Norwegian University of Life Sciences, NMBU, Aas, Norway
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Bo Zhao, Amin Dou, Zhiwei Zhang, Zhenyu Chen, Wenbo Sun, Yanli Feng, Xiaojuan Wang, and Qiang Wang
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Salt marshes play a large role in global C storage, and C stock estimates are used to predict future changes. However, spatial and temporal gradients in C burial rates across the landscape exist due to variations in water inundation, dominant plant species and stage of growth, and tidal action. We quantified soil C concentrations in soil cores across time and space alongside several porewater biogeochemical variables and discussed the controls on variability in soil C in salt marsh ecosystems.
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Biogeosciences, 20, 4737–4749, https://doi.org/10.5194/bg-20-4737-2023, https://doi.org/10.5194/bg-20-4737-2023, 2023
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In this research, we assessed the diversity and function of the dark septate endophytic (DSE) fungi community associated with Miscanthus condensatus root in volcanic ecosystems. Both metabarcoding and isolation were adopted in this study. We further validated effects on plant growth by inoculation of some core DSE isolates. This study helps improve our understanding of the role of Miscanthus condensatus-associated DSE fungi during the restoration of post-volcanic ecosystems.
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We identified total soil P concentration as the most important predictor of all soil P pool concentrations, except for primary mineral P concentration, which is primarily controlled by soil pH and only secondarily by total soil P concentration. We predicted soil P pools’ distributions in natural systems, which can inform assessments of the role of natural P availability for ecosystem productivity, climate change mitigation, and the functioning of the Earth system.
Imane Slimani, Xia Zhu-Barker, Patricia Lazicki, and William Horwath
Biogeosciences, 20, 3873–3894, https://doi.org/10.5194/bg-20-3873-2023, https://doi.org/10.5194/bg-20-3873-2023, 2023
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There is a strong link between nitrogen availability and iron minerals in soils. These minerals have multiple outcomes for nitrogen availability depending on soil conditions and properties. For example, iron can limit microbial degradation of nitrogen in aerated soils but has opposing outcomes in non-aerated soils. This paper focuses on the multiple ways iron can affect nitrogen bioavailability in soils.
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.
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Biogeosciences, 20, 2207–2219, https://doi.org/10.5194/bg-20-2207-2023, https://doi.org/10.5194/bg-20-2207-2023, 2023
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The decomposition of soil organic matter and flux of carbon dioxide are expected to increase as temperatures rise. However, soil organic matter decomposition is a two-step process whereby large molecules are first broken down outside microbial cells and then respired within microbial cells. We show here that these two steps are not equally sensitive to increases in soil temperature and that global warming may cause a shift in the rate-limiting step from outside to inside the microbial cell.
Mercedes Román Dobarco, Alexandre M. J-C. Wadoux, Brendan Malone, Budiman Minasny, Alex B. McBratney, and Ross Searle
Biogeosciences, 20, 1559–1586, https://doi.org/10.5194/bg-20-1559-2023, https://doi.org/10.5194/bg-20-1559-2023, 2023
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Soil organic carbon (SOC) is of a heterogeneous nature and varies in chemistry, stabilisation mechanisms, and persistence in soil. In this study we mapped the stocks of SOC fractions with different characteristics and turnover rates (presumably PyOC >= MAOC > POC) across Australia, combining spectroscopy and digital soil mapping. The SOC stocks (0–30 cm) were estimated as 13 Pg MAOC, 2 Pg POC, and 5 Pg PyOC.
Frederick Büks
Biogeosciences, 20, 1529–1535, https://doi.org/10.5194/bg-20-1529-2023, https://doi.org/10.5194/bg-20-1529-2023, 2023
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Ultrasonication with density fractionation of soils is a commonly used method to separate soil organic matter pools, which is, e.g., important to calculate carbon turnover in landscapes. It is shown that the approach that merges soil and dense solution without mixing has a low recovery rate and causes co-extraction of parts of the retained labile pool along with the intermediate pool. An alternative method with high recovery rates and no cross-contamination was recommended.
Tino Peplau, Christopher Poeplau, Edward Gregorich, and Julia Schroeder
Biogeosciences, 20, 1063–1074, https://doi.org/10.5194/bg-20-1063-2023, https://doi.org/10.5194/bg-20-1063-2023, 2023
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We buried tea bags and temperature loggers in a paired-plot design in soils under forest and agricultural land and retrieved them after 2 years to quantify the effect of land-use change on soil temperature and litter decomposition in subarctic agricultural systems. We could show that agricultural soils were on average 2 °C warmer than forests and that litter decomposition was enhanced. The results imply that deforestation amplifies effects of climate change on soil organic matter dynamics.
Violeta Mendoza-Martinez, Scott L. Collins, and Jennie R. McLaren
Biogeosciences Discuss., https://doi.org/10.5194/bg-2023-41, https://doi.org/10.5194/bg-2023-41, 2023
Preprint under review for BG
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We examine the impacts of multi-decadal nitrogen additions on a dryland ecosystem N budget, including the soil, microbial and plant N pools. After 26 years, there appears to be little impact on the soil microbial or plant community and only minimal increases in N pools within the soil. While perhaps encouraging from a conservation standpoint, we calculate that greater than 95 % of the nitrogen added to the system is not retained and is instead either lost deeper in the soil or emitted as gas.
Joseph Okello, Marijn Bauters, Hans Verbeeck, Samuel Bodé, John Kasenene, Astrid Françoys, Till Engelhardt, Klaus Butterbach-Bahl, Ralf Kiese, and Pascal Boeckx
Biogeosciences, 20, 719–735, https://doi.org/10.5194/bg-20-719-2023, https://doi.org/10.5194/bg-20-719-2023, 2023
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The increase in global and regional temperatures has the potential to drive accelerated soil organic carbon losses in tropical forests. We simulated climate warming by translocating intact soil cores from higher to lower elevations. The results revealed increasing temperature sensitivity and decreasing losses of soil organic carbon with increasing elevation. Our results suggest that climate warming may trigger enhanced losses of soil organic carbon from tropical montane forests.
Johanna Pihlblad, Louise C. Andresen, Catriona A. Macdonald, David S. Ellsworth, and Yolima Carrillo
Biogeosciences, 20, 505–521, https://doi.org/10.5194/bg-20-505-2023, https://doi.org/10.5194/bg-20-505-2023, 2023
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Elevated CO2 in the atmosphere increases forest biomass productivity when growth is not limited by soil nutrients. This study explores how mature trees stimulate soil availability of nitrogen and phosphorus with free-air carbon dioxide enrichment after 5 years of fumigation. We found that both nutrient availability and processes feeding available pools increased in the rhizosphere, and phosphorus increased at depth. This appears to not be by decomposition but by faster recycling of nutrients.
Rodrigo Vargas and Van Huong Le
Biogeosciences, 20, 15–26, https://doi.org/10.5194/bg-20-15-2023, https://doi.org/10.5194/bg-20-15-2023, 2023
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Quantifying the role of soils in nature-based solutions requires accurate estimates of soil greenhouse gas (GHG) fluxes. We suggest that multiple GHG fluxes should not be simultaneously measured at a few fixed time intervals, but an optimized sampling approach can reduce bias and uncertainty. Our results have implications for assessing GHG fluxes from soils and a better understanding of the role of soils in nature-based solutions.
Kristine Karstens, Benjamin Leon Bodirsky, Jan Philipp Dietrich, Marta Dondini, Jens Heinke, Matthias Kuhnert, Christoph Müller, Susanne Rolinski, Pete Smith, Isabelle Weindl, Hermann Lotze-Campen, and Alexander Popp
Biogeosciences, 19, 5125–5149, https://doi.org/10.5194/bg-19-5125-2022, https://doi.org/10.5194/bg-19-5125-2022, 2022
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Soil organic carbon (SOC) has been depleted by anthropogenic land cover change and agricultural management. While SOC models often simulate detailed biochemical processes, the management decisions are still little investigated at the global scale. We estimate that soils have lost around 26 GtC relative to a counterfactual natural state in 1975. Yet, since 1975, SOC has been increasing again by 4 GtC due to a higher productivity, recycling of crop residues and manure, and no-tillage practices.
Petri Kiuru, Marjo Palviainen, Arianna Marchionne, Tiia Grönholm, Maarit Raivonen, Lukas Kohl, and Annamari Laurén
Biogeosciences, 19, 5041–5058, https://doi.org/10.5194/bg-19-5041-2022, https://doi.org/10.5194/bg-19-5041-2022, 2022
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Peatlands are large carbon stocks. Emissions of carbon dioxide and methane from peatlands may increase due to changes in management and climate. We studied the variation in the gas diffusivity of peat with depth using pore network simulations and laboratory experiments. Gas diffusivity was found to be lower in deeper peat with smaller pores and lower pore connectivity. However, gas diffusivity was not extremely low in wet conditions, which may reflect the distinctive structure of peat.
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.
Giuseppe Cipolla, Salvatore Calabrese, Amilcare Porporato, and Leonardo V. Noto
Biogeosciences, 19, 3877–3896, https://doi.org/10.5194/bg-19-3877-2022, https://doi.org/10.5194/bg-19-3877-2022, 2022
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Enhanced weathering (EW) is a promising strategy for carbon sequestration. Since models may help to characterize field EW, the present work applies a hydro-biogeochemical model to four case studies characterized by different rainfall seasonality, vegetation and soil type. Rainfall seasonality strongly affects EW dynamics, but low carbon sequestration suggests that an in-depth analysis at the global scale is required to see if EW may be effective to mitigate climate change.
Vao Fenotiana Razanamahandry, Marjolein Dewaele, Gerard Govers, Liesa Brosens, Benjamin Campforts, Liesbet Jacobs, Tantely Razafimbelo, Tovonarivo Rafolisy, and Steven Bouillon
Biogeosciences, 19, 3825–3841, https://doi.org/10.5194/bg-19-3825-2022, https://doi.org/10.5194/bg-19-3825-2022, 2022
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In order to shed light on possible past vegetation shifts in the Central Highlands of Madagascar, we measured stable isotope ratios of organic carbon in soil profiles along both forested and grassland hillslope transects in the Lake Alaotra region. Our results show that the landscape of this region was more forested in the past: soils in the C4-dominated grasslands contained a substantial fraction of C3-derived carbon, increasing with depth.
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.
Alessandro Montemagno, Christophe Hissler, Victor Bense, Adriaan J. Teuling, Johanna Ziebel, and Laurent Pfister
Biogeosciences, 19, 3111–3129, https://doi.org/10.5194/bg-19-3111-2022, https://doi.org/10.5194/bg-19-3111-2022, 2022
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We investigated the biogeochemical processes that dominate the release and retention of elements (nutrients and potentially toxic elements) during litter degradation. Our results show that toxic elements are retained in the litter, while nutrients are released in solution during the first stages of degradation. This seems linked to the capability of trees to distribute the elements between degradation-resistant and non-degradation-resistant compounds of leaves according to their chemical nature.
Laura Sereni, Bertrand Guenet, Charlotte Blasi, Olivier Crouzet, Jean-Christophe Lata, and Isabelle Lamy
Biogeosciences, 19, 2953–2968, https://doi.org/10.5194/bg-19-2953-2022, https://doi.org/10.5194/bg-19-2953-2022, 2022
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This study focused on the modellisation of two important drivers of soil greenhouse gas emissions: soil contamination and soil moisture change. The aim was to include a Cu function in the soil biogeochemical model DNDC for different soil moisture conditions and then to estimate variation in N2O, NO2 or NOx emissions. Our results show a larger effect of Cu on N2 and N2O emissions than on the other nitrogen species and a higher effect for the soils incubated under constant constant moisture.
Marie Spohn and Johan Stendahl
Biogeosciences, 19, 2171–2186, https://doi.org/10.5194/bg-19-2171-2022, https://doi.org/10.5194/bg-19-2171-2022, 2022
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We explored the ratios of carbon (C), nitrogen (N), and phosphorus (P) of organic matter in Swedish forest soils. The N : P ratio of the organic layer was most strongly related to the mean annual temperature, while the C : N ratios of the organic layer and mineral soil were strongly related to tree species even in the subsoil. The organic P concentration in the mineral soil was strongly affected by soil texture, which diminished the effect of tree species on the C to organic P (C : OP) ratio.
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.
Jasmin Fetzer, Emmanuel Frossard, Klaus Kaiser, and Frank Hagedorn
Biogeosciences, 19, 1527–1546, https://doi.org/10.5194/bg-19-1527-2022, https://doi.org/10.5194/bg-19-1527-2022, 2022
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As leaching is a major pathway of nitrogen and phosphorus loss in forest soils, we investigated several potential drivers in two contrasting beech forests. The composition of leachates, obtained by zero-tension lysimeters, varied by season, and climatic extremes influenced the magnitude of leaching. Effects of nitrogen and phosphorus fertilization varied with soil nutrient status and sorption properties, and leaching from the low-nutrient soil was more sensitive to environmental factors.
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.
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.
Heleen Deroo, Masuda Akter, Samuel Bodé, Orly Mendoza, Haichao Li, Pascal Boeckx, and Steven Sleutel
Biogeosciences, 18, 5035–5051, https://doi.org/10.5194/bg-18-5035-2021, https://doi.org/10.5194/bg-18-5035-2021, 2021
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We assessed if and how incorporation of exogenous organic carbon (OC) such as straw could affect decomposition of native soil organic carbon (SOC) under different irrigation regimes. Addition of exogenous OC promoted dissolution of native SOC, partly because of increased Fe reduction, leading to more net release of Fe-bound SOC. Yet, there was no proportionate priming of SOC-derived DOC mineralisation. Water-saving irrigation can retard both priming of SOC dissolution and mineralisation.
Frances A. Podrebarac, Sharon A. Billings, Kate A. Edwards, Jérôme Laganière, Matthew J. Norwood, and Susan E. Ziegler
Biogeosciences, 18, 4755–4772, https://doi.org/10.5194/bg-18-4755-2021, https://doi.org/10.5194/bg-18-4755-2021, 2021
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Soil respiration is a large and temperature-responsive flux in the global carbon cycle. We found increases in microbial use of easy to degrade substrates enhanced the temperature response of respiration in soils layered as they are in situ. This enhanced response is consistent with soil composition differences in warm relative to cold climate forests. These results highlight the importance of the intact nature of soils rarely studied in regulating responses of CO2 fluxes to changing temperature.
Elisa Bruni, Bertrand Guenet, Yuanyuan Huang, Hugues Clivot, Iñigo Virto, Roberta Farina, Thomas Kätterer, Philippe Ciais, Manuel Martin, and Claire Chenu
Biogeosciences, 18, 3981–4004, https://doi.org/10.5194/bg-18-3981-2021, https://doi.org/10.5194/bg-18-3981-2021, 2021
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Increasing soil organic carbon (SOC) stocks is beneficial for climate change mitigation and food security. One way to enhance SOC stocks is to increase carbon input to the soil. We estimate the amount of carbon input required to reach a 4 % annual increase in SOC stocks in 14 long-term agricultural experiments around Europe. We found that annual carbon input should increase by 43 % under current temperature conditions, by 54 % for a 1 °C warming scenario and by 120 % for a 5 °C warming scenario.
Rainer Brumme, Bernd Ahrends, Joachim Block, Christoph Schulz, Henning Meesenburg, Uwe Klinck, Markus Wagner, and Partap K. Khanna
Biogeosciences, 18, 3763–3779, https://doi.org/10.5194/bg-18-3763-2021, https://doi.org/10.5194/bg-18-3763-2021, 2021
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In order to study the fate of litter nitrogen in forest soils, we combined a leaf litterfall exchange experiment using 15N-labeled leaf litter with long-term element budgets at seven European beech sites in Germany. It appears that fructification intensity, which has increased in recent decades, has a distinct impact on N retention in forest soils. Despite reduced nitrogen deposition, about 6 and 10 kg ha−1 of nitrogen were retained annually in the soils and in the forest stands, respectively.
Lorenz Gfeller, Andrea Weber, Isabelle Worms, Vera I. Slaveykova, and Adrien Mestrot
Biogeosciences, 18, 3445–3465, https://doi.org/10.5194/bg-18-3445-2021, https://doi.org/10.5194/bg-18-3445-2021, 2021
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Our incubation experiment shows that flooding of polluted floodplain soils may induce pulses of both mercury (Hg) and methylmercury to the soil solution and threaten downstream ecosystems. We demonstrate that mobilization of Hg bound to manganese oxides is a relevant process in organic-matter-poor soils. Addition of organic amendments accelerates this mobilization but also facilitates the formation of nanoparticulate Hg and the subsequent fixation of Hg from soil solution to the soil.
Yao Zhang, Jocelyn M. Lavallee, Andy D. Robertson, Rebecca Even, Stephen M. Ogle, Keith Paustian, and M. Francesca Cotrufo
Biogeosciences, 18, 3147–3171, https://doi.org/10.5194/bg-18-3147-2021, https://doi.org/10.5194/bg-18-3147-2021, 2021
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Soil organic matter (SOM) is essential for the health of soils, and the accumulation of SOM helps removal of CO2 from the atmosphere. Here we present the result of the continued development of a mathematical model that simulates SOM and its measurable fractions. In this study, we simulated several grassland sites in the US, and the model generally captured the carbon and nitrogen amounts in SOM and their distribution between the measurable fractions throughout the entire soil profile.
Zhongkui Luo, Raphael A. Viscarra-Rossel, and Tian Qian
Biogeosciences, 18, 2063–2073, https://doi.org/10.5194/bg-18-2063-2021, https://doi.org/10.5194/bg-18-2063-2021, 2021
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Using the data from 141 584 whole-soil profiles across the globe, we disentangled the relative importance of biotic, climatic and edaphic variables in controlling global SOC stocks. The results suggested that soil properties and climate contributed similarly to the explained global variance of SOC in four sequential soil layers down to 2 m. However, the most important individual controls are consistently soil-related, challenging current climate-driven framework of SOC dynamics.
Debjani Sihi, Xiaofeng Xu, Mónica Salazar Ortiz, Christine S. O'Connell, Whendee L. Silver, Carla López-Lloreda, Julia M. Brenner, Ryan K. Quinn, Jana R. Phillips, Brent D. Newman, and Melanie A. Mayes
Biogeosciences, 18, 1769–1786, https://doi.org/10.5194/bg-18-1769-2021, https://doi.org/10.5194/bg-18-1769-2021, 2021
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Humid tropical soils are important sources and sinks of methane. We used model simulation to understand how different kinds of microbes and observed soil moisture and oxygen dynamics contribute to production and consumption of methane along a wet tropical hillslope during normal and drought conditions. Drought alters the diffusion of oxygen and microbial substrates into and out of soil microsites, resulting in enhanced methane release from the entire hillslope during drought recovery.
Mathieu Chassé, Suzanne Lutfalla, Lauric Cécillon, François Baudin, Samuel Abiven, Claire Chenu, and Pierre Barré
Biogeosciences, 18, 1703–1718, https://doi.org/10.5194/bg-18-1703-2021, https://doi.org/10.5194/bg-18-1703-2021, 2021
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Evolution of organic carbon content in soils could be a major driver of atmospheric greenhouse gas concentrations over the next century. Understanding factors controlling carbon persistence in soil is a challenge. Our study of unique long-term bare-fallow samples, depleted in labile organic carbon, helps improve the separation, evaluation and characterization of carbon pools with distinct residence time in soils and gives insight into the mechanisms explaining soil organic carbon persistence.
Melisa A. Diaz, Christopher B. Gardner, Susan A. Welch, W. Andrew Jackson, Byron J. Adams, Diana H. Wall, Ian D. Hogg, Noah Fierer, and W. Berry Lyons
Biogeosciences, 18, 1629–1644, https://doi.org/10.5194/bg-18-1629-2021, https://doi.org/10.5194/bg-18-1629-2021, 2021
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Water-soluble salt and nutrient concentrations of soils collected along the Shackleton Glacier, Antarctica, show distinct geochemical gradients related to latitude, longitude, elevation, soil moisture, and distance from coast and glacier. Machine learning algorithms were used to estimate geochemical gradients for the region given the relationship with geography. Geography and surface exposure age drive salt and nutrient abundances, influencing invertebrate habitat suitability and biogeography.
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.
Lena Rohe, Bernd Apelt, Hans-Jörg Vogel, Reinhard Well, Gi-Mick Wu, and Steffen Schlüter
Biogeosciences, 18, 1185–1201, https://doi.org/10.5194/bg-18-1185-2021, https://doi.org/10.5194/bg-18-1185-2021, 2021
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Total denitrification, i.e. N2O and (N2O + N2) fluxes, of repacked soil cores were analysed for different combinations of soils and water contents. Prediction accuracy of (N2O + N2) fluxes was highest with combined proxies for oxygen demand (CO2 flux) and oxygen supply (anaerobic soil volume fraction). Knowledge of denitrification completeness (product ratio) improved N2O predictions. Substitutions with cheaper proxies (soil organic matter, empirical diffusivity) reduced prediction accuracy.
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.
Michael Rinderer, Jaane Krüger, Friederike Lang, Heike Puhlmann, and Markus Weiler
Biogeosciences, 18, 1009–1027, https://doi.org/10.5194/bg-18-1009-2021, https://doi.org/10.5194/bg-18-1009-2021, 2021
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We quantified the lateral and vertical subsurface flow (SSF) and P concentrations of three beech forest plots with contrasting soil properties during sprinkling experiments. Vertical SSF was 2 orders of magnitude larger than lateral SSF, and both consisted mainly of pre-event water. P concentrations in SSF were high during the first 1 to 2 h (nutrient flushing) but nearly constant thereafter. This suggests that P in the soil solution was replenished fast by mineral or organic sources.
Kirsty C. Paterson, Joanna M. Cloy, Robert M. Rees, Elizabeth M. Baggs, Hugh Martineau, Dario Fornara, Andrew J. Macdonald, and Sarah Buckingham
Biogeosciences, 18, 605–620, https://doi.org/10.5194/bg-18-605-2021, https://doi.org/10.5194/bg-18-605-2021, 2021
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Soil organic carbon sequestration across agroecosystems worldwide can contribute to mitigating the effects of climate change by reducing levels of atmospheric carbon dioxide. The maximum carbon sequestration potential is frequently estimated using the linear regression equation developed by Hassink (1997). This work examines the suitability of this equation for use in grasslands across the United Kingdom. The results highlight the need to ensure the fit of equations to the soils being studied.
Hannah Gies, Frank Hagedorn, Maarten Lupker, Daniel Montluçon, Negar Haghipour, Tessa Sophia van der Voort, and Timothy Ian Eglinton
Biogeosciences, 18, 189–205, https://doi.org/10.5194/bg-18-189-2021, https://doi.org/10.5194/bg-18-189-2021, 2021
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Understanding controls on the persistence of organic matter in soils is essential to constrain its role in the carbon cycle. Emerging concepts suggest that the soil carbon pool is predominantly comprised of stabilized microbial residues. To test this hypothesis we isolated microbial membrane lipids from two Swiss soil profiles and measured their radiocarbon age. We find that the ages of these compounds are in the range of millenia and thus provide evidence for stabilized microbial mass in soils.
Frederick Büks, Gilles Kayser, Antonia Zieger, Friederike Lang, and Martin Kaupenjohann
Biogeosciences, 18, 159–167, https://doi.org/10.5194/bg-18-159-2021, https://doi.org/10.5194/bg-18-159-2021, 2021
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Ultrasonication/density fractionation is a common method used to extract particulate organic matter (POM) and, recently, microplastic (MP) from soil samples. In this study, ultrasonic treatment with mechanical stress increasing from 0 to 500 J mL−1 caused comminution and a reduced recovery rate of soil-derived POMs but no such effects with MP particles. In consequence, the extraction of MP from soils is not affected by particle size and recovery rate artifacts.
Hang Wen, Pamela L. Sullivan, Gwendolyn L. Macpherson, Sharon A. Billings, and Li Li
Biogeosciences, 18, 55–75, https://doi.org/10.5194/bg-18-55-2021, https://doi.org/10.5194/bg-18-55-2021, 2021
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Carbonate weathering is essential in regulating carbon cycle at the century timescale. Plant roots accelerate weathering by elevating soil CO2 via respiration. It however remains poorly understood how and how much rooting characteristics modify flow paths and weathering. This work indicates that deepening roots in woodlands can enhance carbonate weathering by promoting recharge and CO2–carbonate contact in the deep, carbonate-abundant subsurface.
Cited articles
Arah, J. R. M. and Vinten, A. J. A.: Simplified models of anoxia and
denitrification in aggregated and simple-structured soils, Eur. J. Soil Sci., 46, 507–517, https://doi.org/10.1111/j.1365-2389.1995.tb01347.x, 1995.
Ball, B. C.: Soil structure and greenhouse gas emissions: a synthesis of 20
years of experimentation, Eur. J. Soil Sci., 64, 357–373,
https://doi.org/10.1111/ejss.12013, 2013.
Bergaust, L., Shapleigh, J., Frostegard, A., and Bakken, L.: Transcription
and activities of NOx reductases in Agrobacterium tumefaciens : The
influence of nitrate, nitrite and oxygen availability, Environ. Microbiol.,
10, 3070–3081, 2008.
Bergaust, L., Mao, Y., Bakken, L., and Frostegard, A.: Denitrification
response patterns during the transition to anoxic respiration and
posttranscriptional effects of suboptimal pH on nitrogen oxide reductase in
Paracoccus denitrificans, Appl. Environ. Microbiol., 76, 6387–6396, 2010.
Bergaust, L., Bakken, Lars, R., and Frostegård, Å.: Denitrification
regulatory phenotype, a new term for the characterization of denitrifying
bacteria, Biochem. Soc. T., 39, 207–212, https://doi.org/10.1042/bst0390207,
2011.
Bergstermann, A., Cárdenas, L., Bol, R., Gilliam, L., Goulding, K.,
Meijide, A., Scholefield, D., Vallejo, A., and Well, R.: Effect of
antecedent soil moisture conditions on emissions and isotopologue
distribution of N2O during denitrification, Soil Biol. Biochem.,
43, 240–250, https://doi.org/10.1016/j.soilbio.2010.10.003,
2011.
Blagodatsky, S., Grote, R., Kiese, R., Werner, C., and Butterbach-Bahl, K.:
Modelling of microbial carbon and nitrogen turnover in soil with special
emphasis on N-trace gases emission, Plant Soil, 346, 297–330,
https://doi.org/10.1007/s11104-011-0821-z, 2011.
Doube, M., Kłosowski, M. M., Arganda-Carreras, I., Cordelières, F. P.,
Dougherty, R. P., Jackson, J. S., Schmid, B., Hutchinson, J. R., and
Shefelbine, S. J.: BoneJ: Free and extensible bone image analysis in ImageJ,
Bone, 47, 1076–1079, 2010.
Ebrahimi, A. and Or, D.: Microbial community dynamics in soil aggregates
shape biogeochemical gas fluxes from soil profiles – upscaling an aggregate
biophysical model, Glob. Change Biol., 22, 3141–3156, 2016.
Ebrahimi, A. and Or, D.: Dynamics of soil biogeochemical gas emissions
shaped by remolded aggregate sizes and carbon configurations under hydration
cycles, Glob. Change Biol., 24, e378–e392, https://doi.org/10.1111/gcb.13938, 2018.
Elberling, B., Askaer, L., Jørgensen, C. J., Joensen, H. P., Kühl,
M., Glud, R. N., and Lauritsen, F. R.: Linking Soil O2, CO2, and CH4
Concentrations in a Wetland Soil: Implications for CO2 and CH4 Fluxes,
Environ. Sci. Technol., 45, 3393–3399, https://doi.org/10.1021/es103540k,
2011.
Flessa, H., Dörsch, P., and Beese, F.: Seasonal variation of N2O and CH4
fluxes in differently managed arable soils in southern Germany, J.
Geophys. Res.-Atmos., 100, 23115–23124, https://doi.org/10.1029/95JD02270,
1995.
Groffman, P. M., Butterbach-Bahl, K., Fulweiler, R. W., Gold, A. J., Morse,
J. L., Stander, E. K., Tague, C., Tonitto, C., and Vidon, P.: Challenges to
incorporating spatially and temporally explicit phenomena (hotspots and hot
moments) in denitrification models, Biogeochemistry, 93, 49–77, 2009.
Højberg, O., Revsbech, N. P., and Tiedje, J. M.: Denitrification in soil
aggregates analyzed with microsensors for nitrous oxide and oxygen, Soil
Sci. Soc. Am. J., 58, 1691–1698, 1994.
Horn, R., Stepniewski, W., Wlodarczyk, T., Walenzik, G., and Eckhardt, F.:
Denitrification rate and microbial distribution within homogeneous model
soil aggregates, Int. Agrophys., 8, 65–74, 1994.
Hron, P., Jost, D., Bastian, P., Gallert, C., Winter, J., and Ippisch, O.:
Application of Reactive Transport Modeling to Growth and Transport of
Microorganisms in the Capillary Fringe, Vadose Zone J., 14, 1–17,
https://doi.org/10.2136/vzj2014.07.0092, 2015.
Huang, T., Gao, B., Hu, X.-K., Lu, X., Well, R., Christie, P., Bakken, L.
R., and Ju, X.-T.: Ammonia-oxidation as an engine to generate nitrous oxide
in an intensively managed calcareous Fluvo-aquic soil, Sci. Rep.,
4, 3950, https://doi.org/10.1038/srep03950, 2014.
Juyal, A., Eickhorst, T., Falconer, R., Baveye, P. C., Spiers, A., and
Otten, W.: Control of Pore Geometry in Soil Microcosms and Its Effect on the
Growth and Spread of Pseudomonas and Bacillus sp, Front. Environ.
Sci., 6, 1–12, https://doi.org/10.3389/fenvs.2018.00073, 2018.
Keiluweit, M., Wanzek, T., Kleber, M., Nico, P., and Fendorf, S.: Anaerobic
microsites have an unaccounted role in soil carbon stabilization, Nat.
Commun., 8, 1771, https://doi.org/10.1038/s41467-017-01406-6, 2017.
Keiluweit, M., Gee, K., Denney, A., and Fendorf, S.: Anoxic microsites in
upland soils dominantly controlled by clay content, Soil Biol.
Biochem., 118, 42–50, https://doi.org/10.1016/j.soilbio.2017.12.002, 2018.
Kravchenko, A. N., Toosi, E. R., Guber, A. K., Ostrom, N. E., Yu, J., Azeem,
K., Rivers, M. L., and Robertson, G. P.: Hotspots of soil N2O emission
enhanced through water absorption by plant residue, Nat. Geosci., 10,
496–500, https://doi.org/10.1038/ngeo2963,
2017.
Kravchenko, A. N., Guber, A. K., Quigley, M. Y., Koestel, J., Gandhi, H.,
and Ostrom, N. E.: X-ray computed tomography to predict soil N2O production
via bacterial denitrification and N2O emission in contrasting bioenergy
cropping systems, GCB Bioenergy, 10, 894–909, https://doi.org/10.1111/gcbb.12552, 2018.
Kuzyakov, Y. and Blagodatskaya, E.: Microbial hotspots and hot moments in
soil: Concept & review, Soil Biol. Biochem., 83, 184–199, 2015.
Legland, D., Arganda-Carreras, I., and Andrey, P.: MorphoLibJ: integrated
library and plugins for mathematical morphology with ImageJ, Bioinformatics,
32, 3532–3534, 2016.
Li, C., Frolking, S., and Frolking, T. A.: A model of nitrous oxide
evolution from soil driven by rainfall events: 1. Model structure and
sensitivity, J. Geophys. Res.-Atmos., 97, 9759–9776,
https://doi.org/10.1029/92JD00509, 1992.
Li, C., Aber, J., Stange, F., Butterbach-Bahl, K., and Papen, H.: A
process-oriented model of N2O and NO emissions from forest soils: 1. Model
development, J. Geophys. Res.-Atmos., 105, 4369–4384,
2000.
Linn, D. and Doran, J.: Effect of water-filled pore space on carbon dioxide
and nitrous oxide production in tilled and nontilled soils, Soil Sci.
Soc. Am. J., 48, 1267–1272, 1984.
Mangalassery, S., Sjögersten, S., Sparkes, D. L., Sturrock, C. J., and
Mooney, S. J.: The effect of soil aggregate size on pore structure and its
consequence on emission of greenhouse gases, Soil Till. Res., 132,
39–46, https://doi.org/10.1016/j.still.2013.05.003, 2013.
Mathieu, O., Lévêque, J., Hénault, C., Milloux, M.-J., Bizouard,
F., and Andreux, F.: Emissions and spatial variability of
N2O, N2 and
nitrous oxide mole fraction at the field scale, revealed with 15N isotopic
techniques, Soil Biol. Biochem., 38, 941–951, 2006.
Merritt, P. M., Danhorn, T., and Fuqua, C.: Motility and chemotaxis in
Agrobacterium tumefaciens surface attachment and biofilm formation, J.
Bacteriol., 189, 8005–8014, https://doi.org/10.1128/JB.00566-07, 2007.
Miller, M. N., Zebarth, B. J., Dandie, C. E., Burton, D. L., Goyer, C., and
Trevors, J. T.: Denitrifier Community Dynamics in Soil Aggregates under
Permanent Grassland and Arable Cropping Systems, Soil Sci. Soc.f
Am. J., 73, 1843–1851, https://doi.org/10.2136/sssaj2008.0357, 2009.
Molstad, L., Dörsch, P., and Bakken, L. R.: Robotized incubation system
for monitoring gases (O2, NO, N2O, N2) in denitrifying cultures, J.
Microbiological Meth., 71, 202–211, 2007.
Moyano, F. E., Vasilyeva, N., Bouckaert, L., Cook, F., Craine, J., Curiel
Yuste, J., Don, A., Epron, D., Formanek, P., Franzluebbers, A., Ilstedt, U.,
Kätterer, T., Orchard, V., Reichstein, M., Rey, A., Ruamps, L., Subke,
J. A., Thomsen, I. K., and Chenu, C.: The moisture response of soil
heterotrophic respiration: interaction with soil properties, Biogeosciences,
9, 1173–1182, https://doi.org/10.5194/bg-9-1173-2012, 2012.
Nunan, N.: The microbial habitat in soil: Scale, heterogeneity and
functional consequences, J. Plant Nutr. Soil Sc., 180,
425–429, https://doi.org/10.1002/jpln.201700184, 2017.
Parkin, T. B.: Soil microsites as a source of denitrification variability,
Soil Sci. Soc. Am. J., 51, 1194–1199, 1987.
Parry, S., Renault, P., Chenu, C., and Lensi, R.: Denitrification in pasture
and cropped soil clods as affected by pore space structure, Soil Biol.
Biochem., 31, 493–501, https://doi.org/10.1016/S0038-0717(98)00101-1, 1999.
Parton, W. J., Holland, E. A., Del Grosso, S. J., Hartman, M. D., Martin, R.
E., Mosier, A. R., Ojima, D. S., and Schimel, D. S.: Generalized model for
NOx and N2O emissions from soils, J. Geophys. Res.-Atmos., 106, 17403–17419, https://doi.org/10.1029/2001JD900101, 2001.
Paul, K. I., Polglase, P. J., O'Connell, A. M., Carlyle, J. C., Smethurst,
P. J., and Khanna, P. K.: Defining the relation between soil water content
and net nitrogen mineralization, Eur. J. Soil Sci., 54,
39–48, https://doi.org/10.1046/j.1365-2389.2003.00502.x, 2003.
Rabot, E., Lacoste, M., Hénault, C., and Cousin, I.: Using X-ray
Computed Tomography to Describe the Dynamics of Nitrous Oxide Emissions
during Soil Drying, Vadose Zone J., 14, 1–10, https://doi.org/10.2136/vzj2014.12.0177, 2015.
Risk, N., Wagner-Riddle, C., Furon, A., Warland, J., and Blodau, C.:
Comparison of Simultaneous Soil Profile N2O Concentration and Surface N2O
Flux Measurements Overwinter and at Spring Thaw in an Agricultural Soil,
Soil Sci. Soc. Am. J., 78, 180–193,
https://doi.org/10.2136/sssaj2013.06.0221, 2014.
Roco, C. A., Bergaust, L. L., Bakken, L. R., Yavitt, J. B., and Shapleigh,
J. P.: Modularity of nitrogen-oxide reducing soil bacteria: linking
phenotype to genotype, Environ. Microbiol., 19, 2507–2519,
https://doi.org/10.1111/1462-2920.13250, 2017.
Röver, M., Heinemeyer, O., Munch, J. C., and Kaiser, E.-A.: Spatial
heterogeneity within the plough layer: high variability of N2O emission rates, Soil Biol. Biochem., 31,
167–173, 1999.
Ruser, R., Flessa, H., Russow, R., Schmidt, G., Buegger, F., and Munch, J.
C.: Emission of N2O, N2 and CO2 from soil fertilized with nitrate: effect of
compaction, soil moisture and rewetting, Soil Biol. Biochem., 38,
263–274, https://doi.org/10.1016/j.soilbio.2005.05.005, 2006.
Russenes, A. L., Korsaeth, A., Bakken, L. R., and Dörsch, P.: Spatial
variation in soil pH controls off-season N2O emission in an agricultural
soil, Soil Biol. Biochem., 99, 36–46, https://doi.org/10.1016/j.soilbio.2016.04.019, 2016.
Russenes, A. L., Korsaeth, A., Bakken, L. R., and Dörsch, P.: Effects of
nitrogen split application on seasonal N2O emissions in southeast Norway,
Nutr. Cycl. Agroecosys., 115, 41–56, https://doi.org/10.1007/s10705-019-10009-0, 2019.
Schaufler, G., Kitzler, B., Schindlbacher, A., Skiba, U., Sutton, M. A., and
Zechmeister-Boltenstern, S.: Greenhouse gas emissions from European soils
under different land use: effects of soil moisture and temperature, Eur.
J. Soil Sci., 61, 683–696, https://doi.org/10.1111/j.1365-2389.2010.01277.x,
2010.
Schindelin, J., Arganda-Carreras, I., Frise, E., Kaynig, V., Longair, M.,
Pietzsch, T., Preibisch, S., Rueden, C., Saalfeld, S., and Schmid, B.: Fiji:
an open-source platform for biological-image analysis, Nat. Methods, 9,
676–682, 2012.
Schlüter, S.: Dataset – Schlueter_et_al_2019_Biogeosciences, http://www.ufz.de/record/dmp/archive/7291, last access: 26 September 2019.
Schlüter, S., Sheppard, A., Brown, K., and Wildenschild, D.: Image
processing of multiphase images obtained via X-ray microtomography: A
review, Water Resour. Res., 50, 3615–3639, 2014.
Schlüter, S., Henjes, S., Zawallich, J., Bergaust, L., Horn, M.,
Ippisch, O., Vogel, H.-J., and Dörsch, P.: Denitrification in Soil
Aggregate Analogues-Effect of Aggregate Size and Oxygen Diffusion, Front.
Environ. Sci., 6, 1–10, https://doi.org/10.3389/fenvs.2018.00017, 2018.
Schurgers, G., Dorsch, P., Bakken, L., Leffelaar, P., and Haugen, L. E.:
Modelling soil anaerobiosis from water retention characteristics and soil
respiration, Soil Biol. Biochem., 38, 2637–2644,
https://doi.org/10.1016/j.soilbio.2006.04.016, 2006.
Sexstone, A. J., Revsbech, N. P., Parkin, T. B., and Tiedje, J. M.: Direct
measurement of oxygen profiles and denitrification rates in soil aggregates,
Soil Sci. Soc. Am. J., 49, 645–651, 1985.
Sierra, J. and Renault, P.: Respiratory Activity and Oxygen Distribution in
Natural Aggregates in Relation to Anaerobiosis, Soil Sci. Soc.
Am. J., 60, 1428–1438, https://doi.org/10.2136/sssaj1996.03615995006000050020x,
1996.
Sistrom, W. R.: A Requirement for Sodium in the Growth of Rhodopseudomonas
spheroides, Microbiology, 22, 778–785, 1960.
Smith, K. A.: A model of the extent of anaerobic zones in aggregated soils,
and its potential application to estimates of denitrification, J.
Soil Sci., 31, 263–277, https://doi.org/10.1111/j.1365-2389.1980.tb02080.x, 1980.
Smith, K. A., Ball, T., Conen, F., Dobbie, K. E., Massheder, J., and Rey,
A.: Exchange of greenhouse gases between soil and atmosphere: interactions
of soil physical factors and biological processes, Eur. J. Soil
Sci., 54, 779–791, https://doi.org/10.1046/j.1351-0754.2003.0567.x, 2003.
Tecon, R. and Or, D.: Biophysical processes supporting the diversity of
microbial life in soil, FEMS Microbiol. Rev., 41, 599–623,
https://doi.org/10.1093/femsre/fux039, 2017.
Wang, B., Brewer, P. E., Shugart, H. H., Lerdau, M. T., and Allison, S. D.:
Soil aggregates as biogeochemical reactors and implications for
soil–atmosphere exchange of greenhouse gases – A concept, Glob. Change
Biol., 25, 373–385, https://doi.org/10.1111/gcb.14515, 2019.
Wanzek, T., Keiluweit, M., Varga, T., Lindsley, A., Nico, P. S., Fendorf,
S., and Kleber, M.: The Ability of Soil Pore Network Metrics to Predict
Redox Dynamics is Scale Dependent, Soil Systems, 2, 66–91, 2018.
Weier, K. L., Doran, J. W., Power, J. F., and Walters, D. T.:
Denitrification and the Dinitrogen/Nitrous Oxide Ratio as Affected by Soil
Water, Available Carbon, and Nitrate, Soil Sci. Soc. Am.
J., 57, 66–72, https://doi.org/10.2136/sssaj1993.03615995005700010013x, 1993.
Zausig, J., Stepniewski, W., and Horn, R.: Oxygen Concentration and Redox
Potential Gradients in Unsaturated Model Soil Aggregates, Soil Sci.
Soc. Am. J., 57, 908–916,
https://doi.org/10.2136/sssaj1993.03615995005700040005x, 1993.
Short summary
A combination of gas chromatography and X-ray CT reveals the microscale processes that govern soil respiration. Aerobic and anaerobic respiration in microbial hotspots depends not only on the quality and quantity of soil organic matter, but also on the spatial distribution of hotspots. Denitrification kinetics are mainly governed by hotspot architecture due to local competition for oxygen during growth. Cumulative behavior is mainly governed by water saturation due to the overall supply with O2.
A combination of gas chromatography and X-ray CT reveals the microscale processes that govern...
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