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Werner C, Meredith LK, Ladd SN, Ingrisch J, Kübert A, van Haren J, Bahn M, Bailey K, Bamberger I, Beyer M, Blomdahl D, Byron J, Daber E, Deleeuw J, Dippold MA, Fudyma J, Gil-Loaiza J, Honeker LK, Hu J, Huang J, Klüpfel T, Krechmer J, Kreuzwieser J, Kühnhammer K, Lehmann MM, Meeran K, Misztal PK, Ng WR, Pfannerstill E, Pugliese G, Purser G, Roscioli J, Shi L, Tfaily M, Williams J. Ecosystem fluxes during drought and recovery in an experimental forest. Science 2021; 374:1514-1518. [PMID: 34914503 DOI: 10.1126/science.abj6789] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Christiane Werner
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | - Laura K Meredith
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA.,Biosphere 2, University of Arizona, Oracle, AZ, USA.,BIO5 Institute, The University of Arizona, Tucson, AZ, USA
| | - S Nemiah Ladd
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | - Johannes Ingrisch
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany.,Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Angelika Kübert
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | - Joost van Haren
- Biosphere 2, University of Arizona, Oracle, AZ, USA.,Honors College, University of Arizona, Tucson, AZ, USA
| | - Michael Bahn
- Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Kinzie Bailey
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA
| | - Ines Bamberger
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | - Matthias Beyer
- Institute of Geoecology - Environmental Geochemistry, Technical University Braunschweig, Braunschweig, Germany
| | - Daniel Blomdahl
- Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA
| | - Joseph Byron
- Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany
| | - Erik Daber
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | | | - Michaela A Dippold
- Biogeochemistry of Agroecosystems, University of Göttingen, Göttingen, Germany.,Geo-Biosphere Interactions, University of Tuebingen, Tuebingen, Germany
| | - Jane Fudyma
- Department of Environmental Science, University of Arizona, Tucson, AZ, USA
| | - Juliana Gil-Loaiza
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA
| | | | - Jia Hu
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA
| | - Jianbei Huang
- Max Planck Institute for Biogeochemistry, Jena, Germany
| | - Thomas Klüpfel
- Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany
| | | | - Jürgen Kreuzwieser
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | - Kathrin Kühnhammer
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany.,Institute of Geoecology - Environmental Geochemistry, Technical University Braunschweig, Braunschweig, Germany
| | - Marco M Lehmann
- Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
| | | | - Pawel K Misztal
- Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA
| | - Wei-Ren Ng
- Biosphere 2, University of Arizona, Oracle, AZ, USA
| | - Eva Pfannerstill
- Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany
| | - Giovanni Pugliese
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany.,Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany
| | - Gemma Purser
- Centre for Ecology and Hydrology, University of Edinburgh, Edinburgh, UK
| | | | - Lingling Shi
- Biogeochemistry of Agroecosystems, University of Göttingen, Göttingen, Germany.,Geo-Biosphere Interactions, University of Tuebingen, Tuebingen, Germany
| | - Malak Tfaily
- BIO5 Institute, The University of Arizona, Tucson, AZ, USA.,Geo-Biosphere Interactions, University of Tuebingen, Tuebingen, Germany.,Pacific Northwest National Laboratory, Richland, WA, USA
| | - Jonathan Williams
- Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany.,Energy, Environment and Water Research Center, The Cyprus Institute, Nicosia, Cyprus
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2
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Stegen JC, Johnson T, Fredrickson JK, Wilkins MJ, Konopka AE, Nelson WC, Arntzen EV, Chrisler WB, Chu RK, Fansler SJ, Graham EB, Kennedy DW, Resch CT, Tfaily M, Zachara J. Publisher Correction: Influences of organic carbon speciation on hyporheic corridor biogeochemistry and microbial ecology. Nat Commun 2018. [PMID: 29515121 PMCID: PMC5841274 DOI: 10.1038/s41467-018-03572-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- James C Stegen
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA.
| | - Tim Johnson
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | | | - Michael J Wilkins
- Department of Microbiology, The Ohio State University, Columbus, OH, 43210, USA.,School of Earth Sciences, The Ohio State University, Columbus, OH, 43210, USA
| | - Allan E Konopka
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | | | - Evan V Arntzen
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | | | - Rosalie K Chu
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Sarah J Fansler
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Emily B Graham
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - David W Kennedy
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Charles T Resch
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Malak Tfaily
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - John Zachara
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
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Stegen JC, Johnson T, Fredrickson JK, Wilkins MJ, Konopka AE, Nelson WC, Arntzen EV, Chrisler WB, Chu RK, Fansler SJ, Graham EB, Kennedy DW, Resch CT, Tfaily M, Zachara J. Influences of organic carbon speciation on hyporheic corridor biogeochemistry and microbial ecology. Nat Commun 2018; 9:585. [PMID: 29422537 PMCID: PMC5805721 DOI: 10.1038/s41467-018-02922-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 01/09/2018] [Indexed: 11/17/2022] Open
Abstract
The hyporheic corridor (HC) encompasses the river–groundwater continuum, where the mixing of groundwater (GW) with river water (RW) in the HC can stimulate biogeochemical activity. Here we propose a novel thermodynamic mechanism underlying this phenomenon and reveal broader impacts on dissolved organic carbon (DOC) and microbial ecology. We show that thermodynamically favorable DOC accumulates in GW despite lower DOC concentration, and that RW contains thermodynamically less-favorable DOC, but at higher concentrations. This indicates that GW DOC is protected from microbial oxidation by low total energy within the DOC pool, whereas RW DOC is protected by lower thermodynamic favorability of carbon species. We propose that GW–RW mixing overcomes these protections and stimulates respiration. Mixing models coupled with geophysical and molecular analyses further reveal tipping points in spatiotemporal dynamics of DOC and indicate important hydrology–biochemistry–microbial feedbacks. Previously unrecognized thermodynamic mechanisms regulated by GW–RW mixing may therefore strongly influence biogeochemical and microbial dynamics in riverine ecosystems. The mechanisms responsible for stimulating biogeochemical activity in the hyporheic corridor (HC) are poorly understood. Here, the authors find that previously unrecognized thermodynamic mechanisms regulated by groundwater-river water mixing may strongly influence HC biogeochemical and microbial dynamics.
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Affiliation(s)
- James C Stegen
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA.
| | - Tim Johnson
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | | | - Michael J Wilkins
- Department of Microbiology The Ohio State University, Columbus, OH, 43210, USA.,School of Earth Sciences, The Ohio State University, Columbus, OH, 43210, USA
| | - Allan E Konopka
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | | | - Evan V Arntzen
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | | | - Rosalie K Chu
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Sarah J Fansler
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Emily B Graham
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - David W Kennedy
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Charles T Resch
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Malak Tfaily
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - John Zachara
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
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Dalcin Martins P, Hoyt DW, Bansal S, Mills CT, Tfaily M, Tangen BA, Finocchiaro RG, Johnston MD, McAdams BC, Solensky MJ, Smith GJ, Chin YP, Wilkins MJ. Abundant carbon substrates drive extremely high sulfate reduction rates and methane fluxes in Prairie Pothole Wetlands. Glob Chang Biol 2017; 23:3107-3120. [PMID: 28117550 DOI: 10.1111/gcb.13633] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 12/02/2016] [Indexed: 05/04/2023]
Abstract
Inland waters are increasingly recognized as critical sites of methane emissions to the atmosphere, but the biogeochemical reactions driving such fluxes are less well understood. The Prairie Pothole Region (PPR) of North America is one of the largest wetland complexes in the world, containing millions of small, shallow wetlands. The sediment pore waters of PPR wetlands contain some of the highest concentrations of dissolved organic carbon (DOC) and sulfur species ever recorded in terrestrial aquatic environments. Using a suite of geochemical and microbiological analyses, we measured the impact of sedimentary carbon and sulfur transformations in these wetlands on methane fluxes to the atmosphere. This research represents the first study of coupled geochemistry and microbiology within the PPR and demonstrates how the conversion of abundant labile DOC pools into methane results in some of the highest fluxes of this greenhouse gas to the atmosphere ever reported. Abundant DOC and sulfate additionally supported some of the highest sulfate reduction rates ever measured in terrestrial aquatic environments, which we infer to account for a large fraction of carbon mineralization in this system. Methane accumulations in zones of active sulfate reduction may be due to either the transport of free methane gas from deeper locations or the co-occurrence of methanogenesis and sulfate reduction. If both respiratory processes are concurrent, any competitive inhibition of methanogenesis by sulfate-reducing bacteria may be lessened by the presence of large labile DOC pools that yield noncompetitive substrates such as methanol. Our results reveal some of the underlying mechanisms that make PPR wetlands biogeochemical hotspots, which ultimately leads to their critical, but poorly recognized role in regional greenhouse gas emissions.
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Affiliation(s)
| | - David W Hoyt
- Environmental Molecular Sciences Laboratory, Richland, WA, 99350, USA
| | - Sheel Bansal
- United States Geological Survey - Northern Prairie Wildlife Research Center, Jamestown, ND, 58401, USA
| | - Christopher T Mills
- United States Geological Survey, Crustal Geophysics and Geochemistry Science Center, Building 20, Denver Federal Center, Denver, CO, 80225, USA
| | - Malak Tfaily
- Environmental Molecular Sciences Laboratory, Richland, WA, 99350, USA
| | - Brian A Tangen
- United States Geological Survey - Northern Prairie Wildlife Research Center, Jamestown, ND, 58401, USA
| | - Raymond G Finocchiaro
- United States Geological Survey - Northern Prairie Wildlife Research Center, Jamestown, ND, 58401, USA
| | - Michael D Johnston
- School of Earth Sciences, The Ohio State University, Columbus, OH, 43210, USA
| | - Brandon C McAdams
- School of Earth Sciences, The Ohio State University, Columbus, OH, 43210, USA
| | - Matthew J Solensky
- United States Geological Survey - Northern Prairie Wildlife Research Center, Jamestown, ND, 58401, USA
| | - Garrett J Smith
- Microbiology Department, The Ohio State University, Columbus, OH, 43210, USA
| | - Yu-Ping Chin
- School of Earth Sciences, The Ohio State University, Columbus, OH, 43210, USA
| | - Michael J Wilkins
- Microbiology Department, The Ohio State University, Columbus, OH, 43210, USA
- School of Earth Sciences, The Ohio State University, Columbus, OH, 43210, USA
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5
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Stegen JC, Hurlbert AH, Bond-Lamberty B, Chen X, Anderson CG, Chu RK, Dini-Andreote F, Fansler SJ, Hess NJ, Tfaily M. Aligning the Measurement of Microbial Diversity with Macroecological Theory. Front Microbiol 2016; 7:1487. [PMID: 27721808 PMCID: PMC5033968 DOI: 10.3389/fmicb.2016.01487] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 09/07/2016] [Indexed: 11/25/2022] Open
Abstract
The number of microbial operational taxonomic units (OTUs) within a community is akin to species richness within plant/animal (“macrobial”) systems. A large literature documents OTU richness patterns, drawing comparisons to macrobial theory. There is, however, an unrecognized fundamental disconnect between OTU richness and macrobial theory: OTU richness is commonly estimated on a per-individual basis, while macrobial richness is estimated per-area. Furthermore, the range or extent of sampled environmental conditions can strongly influence a study's outcomes and conclusions, but this is not commonly addressed when studying OTU richness. Here we (i) propose a new sampling approach that estimates OTU richness per-mass of soil, which results in strong support for species energy theory, (ii) use data reduction to show how support for niche conservatism emerges when sampling across a restricted range of environmental conditions, and (iii) show how additional insights into drivers of OTU richness can be generated by combining different sampling methods while simultaneously considering patterns that emerge by restricting the range of environmental conditions. We propose that a more rigorous connection between microbial ecology and macrobial theory can be facilitated by exploring how changes in OTU richness units and environmental extent influence outcomes of data analysis. While fundamental differences between microbial and macrobial systems persist (e.g., species concepts), we suggest that closer attention to units and scale provide tangible and immediate improvements to our understanding of the processes governing OTU richness and how those processes relate to drivers of macrobial species richness.
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Affiliation(s)
- James C Stegen
- Pacific Northwest National Laboratory, Biological Sciences Division Richland, WA, USA
| | - Allen H Hurlbert
- Biology Department and Curriculum in Environment and Ecology, University of North Carolina Chapel Hill, NC, USA
| | - Ben Bond-Lamberty
- Pacific Northwest National Laboratory, Joint Global Change Research Institute College Park, MD, USA
| | - Xingyuan Chen
- Pacific Northwest National Laboratory, Atmospheric Sciences and Global Change Division Richland, WA, USA
| | - Carolyn G Anderson
- Pacific Northwest National Laboratory, Biological Sciences Division Richland, WA, USA
| | - Rosalie K Chu
- Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory Richland, WA, USA
| | - Francisco Dini-Andreote
- Microbial Ecology Cluster, Genomics Research in Ecology and Evolution in Nature (GREEN), Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen Groningen, Netherlands
| | - Sarah J Fansler
- Pacific Northwest National Laboratory, Biological Sciences Division Richland, WA, USA
| | - Nancy J Hess
- Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory Richland, WA, USA
| | - Malak Tfaily
- Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory Richland, WA, USA
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6
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Stegen JC, Fredrickson JK, Wilkins MJ, Konopka AE, Nelson WC, Arntzen EV, Chrisler WB, Chu RK, Danczak RE, Fansler SJ, Kennedy DW, Resch CT, Tfaily M. Groundwater-surface water mixing shifts ecological assembly processes and stimulates organic carbon turnover. Nat Commun 2016; 7:11237. [PMID: 27052662 PMCID: PMC4829693 DOI: 10.1038/ncomms11237] [Citation(s) in RCA: 163] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 03/04/2016] [Indexed: 11/09/2022] Open
Abstract
Environmental transitions often result in resource mixtures that overcome limitations to microbial metabolism, resulting in biogeochemical hotspots and moments. Riverine systems, where groundwater mixes with surface water (the hyporheic zone), are spatially complex and temporally dynamic, making development of predictive models challenging. Spatial and temporal variations in hyporheic zone microbial communities are a key, but understudied, component of riverine biogeochemical function. Here, to investigate the coupling among groundwater-surface water mixing, microbial communities and biogeochemistry, we apply ecological theory, aqueous biogeochemistry, DNA sequencing and ultra-high-resolution organic carbon profiling to field samples collected across times and locations representing a broad range of mixing conditions. Our results indicate that groundwater-surface water mixing in the hyporheic zone stimulates heterotrophic respiration, alters organic carbon composition, causes ecological processes to shift from stochastic to deterministic and is associated with elevated abundances of microbial taxa that may degrade a broad suite of organic compounds.
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Affiliation(s)
- James C Stegen
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
| | - James K Fredrickson
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
| | - Michael J Wilkins
- Department of Microbiology, The Ohio State University, Columbus, Ohio 43210, USA.,School of Earth Sciences, The Ohio State University, Columbus, Ohio 43210, USA
| | - Allan E Konopka
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
| | - William C Nelson
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
| | - Evan V Arntzen
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
| | - William B Chrisler
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
| | - Rosalie K Chu
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
| | - Robert E Danczak
- Department of Microbiology, The Ohio State University, Columbus, Ohio 43210, USA
| | - Sarah J Fansler
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
| | - David W Kennedy
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
| | - Charles T Resch
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
| | - Malak Tfaily
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA
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