Increased temperatures alter viable microbial biomass, ammonia oxidizing bacteria and extracellular enzymatic activities in Antarctic soils

ABSTRACT The effects of temperature on microorganisms in high latitude regions, and their possible feedbacks in response to change, are unclear. Here, we assess microbial functionality and composition in response to a substantial temperature change. Total soil biomass, amoA gene sequencing, extracel...

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Bibliographic Details
Published in:FEMS microbiology ecology 2020-05, Vol.96 (5), p.1
Main Authors: Barnard, Sebastian, Van Goethem, Marc W, de Scally, Storme Z, Cowan, Don A, van Rensburg, Peet Jansen, Claassens, Sarina, Makhalanyane, Thulani P
Format: Article
Language:English
Subjects:
Ammonia
Ammonium
AmoA gene
Bacteria
Biodegradation
Biomass
Brittleness
Carbon content
Carbon sources
Community composition
Composition
Ecology
Environmental aspects
Enzymatic activity
Gene sequencing
High temperature
Microbiological research
Microbiology
Microcosms
Microorganisms
Nitrifying bacteria
Oxidation
Phenolic compounds
Phenols
Physicochemical properties
Physiological aspects
Soil microbiology
Soil temperature
Soils
Substrates
Temperature
Temperature effects
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Summary:ABSTRACT The effects of temperature on microorganisms in high latitude regions, and their possible feedbacks in response to change, are unclear. Here, we assess microbial functionality and composition in response to a substantial temperature change. Total soil biomass, amoA gene sequencing, extracellular activity assays and soil physicochemistry were measured to assess a warming scenario. Soil warming to 15°C for 30 days triggered a significant decrease in microbial biomass compared to baseline soils (0°C; P
ISSN:0168-6496
1574-6941
DOI:10.1093/femsec/fiaa065