Do temperature and moisture conditions impact soil microbiology and aggregate stability?

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dc.contributor.authorDowdeswell-Downey, Emily
dc.contributor.authorGrabowski, Robert C.
dc.contributor.authorRickson, R. Jane
dc.date.accessioned2023-08-30T08:59:50Z
dc.date.available2023-08-30T08:59:50Z
dc.date.issued2023-08-29
dc.description.abstractPurpose: Studies predicting the impacts of climate change on erosion have considered numerous variables, such as rainfall erosivity and vegetation cover, but have not considered potential changes in soil erodibility. Erodibility is an intrinsic property of the soil, strongly correlated with the stability of soil aggregates. It is influenced by soil physico-chemical attributes, including the microbiological community. The study aim was to determine how shifts in temperature and moisture conditions, which other studies have shown affect microbiological communities, might affect aggregate stability. Methods: Using an experimental approach with laboratory microcosms, aggregates from a sandy loam soil and a clay soil were incubated at three temperatures and three moisture conditions in a factorial experimental design. Aggregate stability was quantified using rainfall simulation. Microbiological indicator metrics were measured to evaluate treatment microbiological impacts, including community composition (PLFA), biomass carbon, and respiration. Results: Temperature and moisture content affected aggregate stability significantly, but differently for the two soil types tested. For the sandy loam soil, aggregate stability decreased significantly with increasing moisture content. For the clay soil, aggregate stability increased significantly with increasing temperature. For both soil textures, temperature and moisture content affected microbiological community composition and respiration. Regression analysis indicated that microbiological properties were significant predictors of aggregate stability. Conclusion: Our results emphasise the dynamic nature of soil aggregate stability. Changes in microbiological metrics suggest possible biological mechanisms for aggregate stability changes, which should be investigated further to better understand the potential impacts of climate change on soil erodibility and erosion.en_UK
dc.description.sponsorshipNatural Environment Research Council (NERC): NE-M009106-1 BBSRCen_UK
dc.identifier.citationDowdeswell-Downey E, Grabowski RC, Rickson RJ. (2023) Do temperature and moisture conditions impact soil microbiology and aggregate stability?, Journal of Soils and Sediments, Volume 23, Issue 10, October 2023, pp. 3706-3719en_UK
dc.identifier.eissn1614-7480
dc.identifier.issn1439-0108
dc.identifier.urihttps://doi.org/10.1007/s11368-023-03628-2
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20149
dc.language.isoenen_UK
dc.publisherSpringeren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectSoil erosionen_UK
dc.subjectErodibilityen_UK
dc.subjectClimate changeen_UK
dc.subjectMicrobial communityen_UK
dc.subjectBiostabilisationen_UK
dc.titleDo temperature and moisture conditions impact soil microbiology and aggregate stability?en_UK
dc.typeArticleen_UK

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