Articles | Volume 18, issue 16
Biogeosciences, 18, 4773–4789, 2021
Biogeosciences, 18, 4773–4789, 2021
Research article
24 Aug 2021
Research article | 24 Aug 2021

Disturbance triggers non-linear microbe–environment feedbacks

Aditi Sengupta et al.

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Cited articles

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Baldwin, D. S. and Mitchell, A. M.: The effects of drying and re-flooding on the sediment and soil nutrient dynamics of lowland river–floodplain systems: a synthesis, Regul. River., 16, 457–467,<457::AID-RRR597>3.0.CO;2-B, 2000. 
Barnard, R. L., Osborne, C. A., and Firestone, M. K.: Changing precipitation pattern alters soil microbial community response to wet-up under a Mediterranean-type climate, ISME J., 9, 946–957,, 2015. 
Bartelme, R. P., Custer, J. M., Dupont, C. L., Espinoza, J. L., Torralba, M., Khalili, B., and Carini, P.: Influence of Substrate Concentration on the Culturability of Heterotrophic Soil Microbes Isolated by High-Throughput Dilution-to-Extinction Cultivation, mSphere, 5, e00024-20,, 2020. 
Short summary
Conceptual models link microbes with the environment but are untested. We test a recent model using riverbed sediments. We exposed sediments to disturbances, going dry and becoming wet again. As the length of dry conditions got longer, there was a sudden shift in the ecology of microbes, chemistry of organic matter, and rates of microbial metabolism. We propose a new model based on feedbacks initiated by disturbance that cascade across biological, chemical, and functional aspects of the system.
Final-revised paper