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- W3093737112 endingPage "108054" @default.
- W3093737112 startingPage "108054" @default.
- W3093737112 abstract "Rising temperatures in the Arctic and the expansion of plants to higher latitudes will significantly alter belowground microbial communities and their activity. Given that microbial communities are major producers of greenhouse gases, understanding the magnitude of microbial responses to warming and increased carbon input to Arctic soils is necessary to improve global climate change models. In this study, active layer and permafrost soils from northern Greenland (81° N) were subjected to increased carbon input, in the form of plant litter, and temperature increase, using a combined field and laboratory approach. In the field experiment, unamended or litter-amended soils were transplanted from the permafrost layer to the top soil layer and incubated for one year, whereas in the laboratory experiment active layer and permafrost soils with or without litter amendment were incubated at 4 °C or 15 °C for six weeks. Soil microbial communities were evaluated using bacterial 16S and fungal ITS amplicon sequencing and respiration was used as a measure of microbial activity. Litter amendment resulted in similar changes in microbial abundances, diversities and structure of microbial communities, in the field and lab experiments. These changes in microbial communities were likely due to a strong increase in fast-growing bacterial copiotrophic taxa and basidiomycete yeasts. Furthermore, respiration was significantly higher with litter input for both active layer and permafrost soil and with both approaches. Temperature alone had only a small effect on microbial communities, with the exception of the field-incubated permafrost soils, where we observed a shift towards oligotrophic taxa, specifically for bacteria. These results demonstrate that alterations in High Arctic mineral soils may result in predictable shifts in the soil microbiome." @default.
- W3093737112 created "2020-10-29" @default.
- W3093737112 creator A5027260735 @default.
- W3093737112 creator A5062379233 @default.
- W3093737112 creator A5064673302 @default.
- W3093737112 creator A5073098552 @default.
- W3093737112 date "2020-12-01" @default.
- W3093737112 modified "2023-10-12" @default.
- W3093737112 title "Strong shifts in microbial community structure are associated with increased litter input rather than temperature in High Arctic soils" @default.
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- W3093737112 doi "https://doi.org/10.1016/j.soilbio.2020.108054" @default.
- W3093737112 hasPublicationYear "2020" @default.
- W3093737112 type Work @default.