B21J:
Microbial Controls of Biogeochemical Cycling I


Session ID#: 9170

Session Description:
Microbial communities control nutrient transformation and storage in ecosystems. More explicit treatment of microbial processes in large-scale predictive models is needed, and elucidating these processes requires a unified approach. Biogeochemical approaches may focus on process, pools, and fluxes while microbial approaches may focus on individual or community traits, physiology, and community structure. These approaches are complementary. Physical and chemical properties of soil provide niche space for microorganisms and influence community resilience to local disturbances and regional climatic shifts. Specific assemblages of microbes can differentially influence rates of nutrient cycling, and physiological acclimation to environmental change is likely. Molecular, genomic, and metabolomic tools are improving understanding of microbial processes that control biogeochemical cycling in soils. This session invites studies that investigate microbial populations, communities and microbial-mediated processes controlling carbon and nutrient cycling, feedbacks on plant communities, and effects on ecosystem function.
Primary Convener:  Rachel E Gallery, University of Arizona, School of Natural Resources and the Environment, Tucson, United States
Convener:  David JP Moore, University of Arizona, School of Natural Resources and the Environment, Tucson, United States
Chairs:  Rachel E Gallery, University of Arizona, School of Natural Resources and the Environment, Tucson, United States and David JP Moore, University of Arizona, School of Natural Resources and the Environment, Tucson, United States
OSPA Liaison:  Rachel E Gallery, University of Arizona, School of Natural Resources and the Environment, Tucson, United States

Cross-Listed:
  • GC - Global Environmental Change
Index Terms:

0428 Carbon cycling [BIOGEOSCIENCES]
0465 Microbiology: ecology, physiology and genomics [BIOGEOSCIENCES]
0486 Soils/pedology [BIOGEOSCIENCES]
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]

Abstracts Submitted to this Session:

A trait-based approach for examining microbial community assembly (Invited) (69947)
Diana Nemergut and Tiffany Lynn Prest, Duke University, Department of Biology, Durham, United States
Verrucomicrobia and their role in soil methanol consumption (Invited) (86637)
Noah Fierer, University of Colorado at Boulder, Boulder, CO, United States
Constraints Placed by Community Diversity on the Enzymatic Response of Microbial Decomposer Communities to Climate Change in Southern California (Invited) (82600)
Nameer Rahman Baker, University of California, Berkeley, Berkeley, CA, United States and Steven D Allison, University of California Irvine, Ecology and Evolutionary Biology, Irvine, CA, United States
Disturbance-driven Changes in Soil Exoenzyme Activity and Biogeochemistry of Colorado Forests (65547)
Rebecca Lybrand1, Rachel E Gallery2, Nicole A. Trahan3, Emily Dynes1 and David JP Moore2, (1)The University of Arizona, School of Natural Resources and the Environment, Tucson, United States, (2)University of Arizona, School of Natural Resources and the Environment, Tucson, United States, (3)University of Wyoming, Laramie, WY, United States
From position-specific isotope labeling towards soil fluxomics: a novel toolbox to assess the microbial impact on biogeochemical cycles (82051)
Michaela Anna Dippold, Department of Biogeochemistry of Agroecosystems, University of Göttingen, Göttingen, Germany, Carolin Apostel, University of Goettingen, Germany, Agricultural soil sciences, Goettingen, Germany and Yakov Kuzyakov, Department of Soil Science of Temperate Ecosystems, University of Göttingen, Göttingen, Germany
Explicit representation of microbes, enzymes, mineral surfaces, and isotopic tracers helps explain soil organic carbon decomposition and priming (82793)
Xudong Zhu1,2, Jinyun Tang3, William J Riley2, Matthew D Wallenstein4 and M Francesca Cotrufo5, (1)Colorado State University, Fort Collins, CO, United States, (2)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (3)Lawrence Berkeley National Laboratory, Climate & Ecosystem Sciences Division, Berkeley, United States, (4)Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO, United States, (5)Colorado State University, Department of Soil and Crop Sciences, Fort Collins, United States
A Comparison of Arrhenius and Macromolecular Rate Theory for Predicting Temperature Responses of Soil CO2 Production (69928)
Charlotte Alster1, Akihiro Koyama1,2, Nels G. Johnson1,3 and Joseph von Fischer1, (1)Colorado State University, Fort Collins, CO, United States, (2)Sault Ste. Marie, Biology, Sault Ste. Marie, Canada, (3)University of Tennessee, National Institute for Mathematical and Biological Synthesis, Knoxville, TN, United States
Warming rate drives microbial limitation and enzyme expression during peat decomposition (83630)
Patrick Inglett, University of Florida, Department of Soil, Water, and Ecosystem Sciences, Gainesville, United States, Debjani Sihi, University of Florida, Department of Soil and Water Science, Ft Walton Beach, FL, United States; University of Maryland Center (UMCES) for Environmental Science, Frostburg, MD, United States and Kanika Sharma Inglett, University of Florida, Department of Soil and Water Science, Gainesville, FL, United States

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