Soil microbial legacies differ following drying-rewetting and freezing-thawing cycles
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Soil microbial legacies differ following drying-rewetting and freezing-thawing cycles. / Meisner, Annelein; Snoek, Basten L.; Nesme, Joseph; Dent, Elizabeth; Jacquiod, Samuel; Classen, Aimée T.; Priemé, Anders.
I: The ISME Journal, Bind 15, Nr. 4, 2021, s. 1207-1221.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Soil microbial legacies differ following drying-rewetting and freezing-thawing cycles
AU - Meisner, Annelein
AU - Snoek, Basten L.
AU - Nesme, Joseph
AU - Dent, Elizabeth
AU - Jacquiod, Samuel
AU - Classen, Aimée T.
AU - Priemé, Anders
N1 - CENPERMOA[2021}
PY - 2021
Y1 - 2021
N2 - Climate change alters frequencies and intensities of soil drying-rewetting and freezing-thawing cycles. These fluctuations affect soil water availability, a crucial driver of soil microbial activity. While these fluctuations are leaving imprints on soil microbiome structures, the question remains if the legacy of one type of weather fluctuation (e.g., drying-rewetting) affects the community response to the other (e.g., freezing-thawing). As both phenomenons give similar water availability fluctuations, we hypothesized that freezing-thawing and drying-rewetting cycles have similar effects on the soil microbiome. We tested this hypothesis by establishing targeted microcosm experiments. We created a legacy by exposing soil samples to a freezing-thawing or drying-rewetting cycle (phase 1), followed by an additional drying-rewetting or freezing-thawing cycle (phase 2). We measured soil respiration and analyzed soil microbiome structures. Across experiments, larger CO2 pulses and changes in microbiome structures were observed after rewetting than thawing. Drying-rewetting legacy affected the microbiome and CO2 emissions upon the following freezing-thawing cycle. Conversely, freezing-thawing legacy did not affect the microbial response to the drying-rewetting cycle. Our results suggest that drying-rewetting cycles have stronger effects on soil microbial communities and CO2 production than freezing-thawing cycles and that this pattern is mediated by sustained changes in soil microbiome structures.
AB - Climate change alters frequencies and intensities of soil drying-rewetting and freezing-thawing cycles. These fluctuations affect soil water availability, a crucial driver of soil microbial activity. While these fluctuations are leaving imprints on soil microbiome structures, the question remains if the legacy of one type of weather fluctuation (e.g., drying-rewetting) affects the community response to the other (e.g., freezing-thawing). As both phenomenons give similar water availability fluctuations, we hypothesized that freezing-thawing and drying-rewetting cycles have similar effects on the soil microbiome. We tested this hypothesis by establishing targeted microcosm experiments. We created a legacy by exposing soil samples to a freezing-thawing or drying-rewetting cycle (phase 1), followed by an additional drying-rewetting or freezing-thawing cycle (phase 2). We measured soil respiration and analyzed soil microbiome structures. Across experiments, larger CO2 pulses and changes in microbiome structures were observed after rewetting than thawing. Drying-rewetting legacy affected the microbiome and CO2 emissions upon the following freezing-thawing cycle. Conversely, freezing-thawing legacy did not affect the microbial response to the drying-rewetting cycle. Our results suggest that drying-rewetting cycles have stronger effects on soil microbial communities and CO2 production than freezing-thawing cycles and that this pattern is mediated by sustained changes in soil microbiome structures.
U2 - 10.1038/s41396-020-00844-3
DO - 10.1038/s41396-020-00844-3
M3 - Journal article
C2 - 33408369
VL - 15
SP - 1207
EP - 1221
JO - I S M E Journal
JF - I S M E Journal
SN - 1751-7362
IS - 4
ER -
ID: 255098486