Soil biotic legacy effects of extreme weather events influence plant invasiveness

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Soil biotic legacy effects of extreme weather events influence plant invasiveness. / Meisner, Annelein; De Deyn, Gerlinde B.; de Boer, Wietse; van der Putten, Wim H.

I: Proceedings of the National Academy of Sciences, Vol. 110, Nr. 24, 2013, s. 9835-9838.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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Meisner, Annelein ; De Deyn, Gerlinde B. ; de Boer, Wietse ; van der Putten, Wim H. / Soil biotic legacy effects of extreme weather events influence plant invasiveness. I: Proceedings of the National Academy of Sciences. 2013 ; Vol. 110, Nr. 24. s. 9835-9838.

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TY - JOUR

T1 - Soil biotic legacy effects of extreme weather events influence plant invasiveness

AU - Meisner, Annelein

AU - De Deyn, Gerlinde B.

AU - de Boer, Wietse

AU - van der Putten, Wim H.

PY - 2013

Y1 - 2013

N2 - Climate change is expected to increase future abiotic stresses on ecosystems through extreme weather events leading to more extreme drought and rainfall incidences [Jentsch A, et al. (2007) Front Ecol Environ 5(7): 365-374]. These fluctuations in precipitation may affect soil biota, soil processes [Evans ST, Wallenstein MD (2012) Biogeochemistry 109: 101-116], and the proportion of exotics in invaded plant communities [Jimenez MA, et al. (2011) Ecol Lett 14: 1277-1235]. However, little is known about legacy effects in soil on the performance of exotics and natives in invaded plant communities. Here we report that drought and rainfall effects on soil processes and biota affect the performance of exotics and natives in plant communities. We performed two mesocosm experiments. In the first experiment, soil without plants was exposed to drought and/or rainfall, which affected soil N availability. Then the initial soil moisture conditions were restored, and a mixed community of co-occurring natives and exotics was planted and exposed to drought during growth. A single stress before or during growth decreased the biomass of natives, but did not affect exotics. A second drought stress during plant growth resetted the exotic advantage, whereas native biomass was not further reduced. In the second experiment, soil inoculation revealed that drought and/or rainfall influenced soil biotic legacies, which promoted exotics but suppressed natives. Our results demonstrate that extreme weather events can cause legacy effects in soil biota, promoting exotics and suppressing natives in invaded plant communities, depending on the type, frequency, and timing of extreme events.

AB - Climate change is expected to increase future abiotic stresses on ecosystems through extreme weather events leading to more extreme drought and rainfall incidences [Jentsch A, et al. (2007) Front Ecol Environ 5(7): 365-374]. These fluctuations in precipitation may affect soil biota, soil processes [Evans ST, Wallenstein MD (2012) Biogeochemistry 109: 101-116], and the proportion of exotics in invaded plant communities [Jimenez MA, et al. (2011) Ecol Lett 14: 1277-1235]. However, little is known about legacy effects in soil on the performance of exotics and natives in invaded plant communities. Here we report that drought and rainfall effects on soil processes and biota affect the performance of exotics and natives in plant communities. We performed two mesocosm experiments. In the first experiment, soil without plants was exposed to drought and/or rainfall, which affected soil N availability. Then the initial soil moisture conditions were restored, and a mixed community of co-occurring natives and exotics was planted and exposed to drought during growth. A single stress before or during growth decreased the biomass of natives, but did not affect exotics. A second drought stress during plant growth resetted the exotic advantage, whereas native biomass was not further reduced. In the second experiment, soil inoculation revealed that drought and/or rainfall influenced soil biotic legacies, which promoted exotics but suppressed natives. Our results demonstrate that extreme weather events can cause legacy effects in soil biota, promoting exotics and suppressing natives in invaded plant communities, depending on the type, frequency, and timing of extreme events.

KW - invaded ecosystems

KW - nitrogen cycle

KW - plant invasion

KW - plant-soil

KW - interaction

KW - soil microbes

U2 - 10.1073/pnas.1300922110

DO - 10.1073/pnas.1300922110

M3 - Article

VL - 110

SP - 9835

EP - 9838

JO - Proceedings of the National Academy of Sciences

T2 - Proceedings of the National Academy of Sciences

JF - Proceedings of the National Academy of Sciences

SN - 1091-6490

IS - 24

ER -