# Resilience and resistance of microbial communities against drought events, in a mature agroforestry system in Mediterranean area

Isabelle Bertrand, Esther Guillot

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Isabelle Bertrand, Esther Guillot. Resilience and resistance of microbial communities against drought events, in a mature agroforestry system in Mediterranean area. Meeting of working Group Medicago sativa, Aug 2016, Montpellier, France. 2016. [hal-01603014](https://hal.science/hal-01603014)

HAL Id: hal-01603014

https://hal.science/hal-01603014

Submitted on 2 Jun 2020

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# Resilience and resistance of microbial communities against drought events, in a mature agroforestry system in Mediterranean area

Guillot Esther ¹, Dufour Lydie ², Hinsinger Philippe ¹, Bertrand Isabelle ¹

1. UMR Eco&Sols, INRA, Montpellier, France

2. UMR System, INRA, Montpellier, France

esther.guillot@gmail.com

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INRA
SCIENCE & IMPACT

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cirad
LA RECHERCHE AGRONOMIQUE
POUR LE DÉVELOPPEMENT

IRD
Institut de recherche
pour le développement

Sup

Montpellier
Agro

ECOSOFS

Fondation
de
France

ECOTRONS

* Agroforestry systems are known to limit soil degradation, deeply store carbon and have positive impact on different indicators of soil quality.

* What is the impact of tree-crop associations on resistance and resilience of topsoil microbial communities?

* Our aim is to evaluate the resistance and the resilience of the microbial communities of topsoil along a spatial gradient from the tree line to the center of the intercrop, and in the monocrop treatment.

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* Stronger cumulated C mineralisation occurring close to the tree, decreasing with increasing distance from tree.

* Our data show difference in microbial resilience along the spatial gradient, but not difference in resistance.

* Microbial communities seem to be more sensitive to water stress and rewetting close to the tree than in the monocrop treatment.

References :

* Orwin, K.H., Wardle, D.A., 2004. New indices for quantifying the resistance and resilience of soil biota to exogenous disturbances. Soil Biology and Biochemistry 36, 1907-1912