Flooded farm soils shift microbe mix, not overall diversity
Kilcoyne E, O'Shea S, Srinivas M, Garrido Gil T, Sousa A
Soil Health
The soil in your raised beds or community garden plot after a heavy rain isn't dying off microbially, it's just rearranging which bacteria and fungi are running the show, and that reshuffling plays out differently depending on where you live.
Scientists compared soil from flooded and non-flooded farm fields in three countries to see how waterlogging affects the tiny bacteria and fungi that keep soil healthy. They found flooding didn't wipe out the overall variety of microbes, but it did change which specific types were present, and those changes looked different in Germany, Ireland, and Portugal. In other words, your local soil's response to flooding depends a lot on where you garden, not just on the flooding itself.
Key Findings
Flooding showed no significant effect on bacterial or fungal alpha diversity after statistical correction across paired flooded/non-flooded soils in three countries
Flooded soils had higher representation of the bacterial phylum Thermodesulfobacteriota, while fungal phyla Ascomycota and Mortierellomycota were less represented
Eight bacterial genera differed significantly between flooded and non-flooded soils, while no fungal genera showed significant differences; country was a stronger driver of community structure than flooding
chevron_right Technical Summary
Flooded farm soils in Germany, Ireland, and Portugal didn't lose overall microbial diversity, but the mix of bacteria and fungi shifted in ways that depended more on location than on flooding itself.
Abstract Preview
Original paper
Impacts of flooding on agricultural soil microbiome.
As a result of climate change, increased flooding events have been recorded across the globe. The role of soil microbiomes in soil health and fertility is well recognized, as these microbial commun...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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