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24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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Welcome to ECOSYS

UMR ECOSYS - Ecologie fonctionnelle et écotoxicologie des agroécosystèmes

Le service Biodiversité dans le réseau des services traités par ECOSYS

janvier 2015

L’intérêt de l’étude du service Maintien de la biodiversité est double  :

  • Il s’agit en effet de comprendre les  réponses fonctionnelles des organismes à l’environnement (perturbations, actions techniques ou contraintes) afin  d’établir les règles qui régissent leur assemblage en populations et en communautés.
  • En outre, il faut identifier les fonctions/processus réalisés ou influencés par la biodiversité dans le but de produire une évaluation des services rendus par la biodiversité (et de leur stabilité). 

Pour cela, nous envisageons d’étudier la valeur intrinsèque de la biodiversité en réponse à différents types de variable de forçage, tels que les pratiques culturales et leur changement, la contamination des sols (polluants  organiques ou inorganiques, en cocktails) ou encore l’organisation du paysage. D’autre part, le rôle des  organismes ou des communautés dans la provision d’un service d’approvisionnement (Production agricole) et de deux services de régulation (Régulation de la qualité des compartiments et Recyclage des PRO) sera appréhendée. 

Ainsi, les travaux en cours et à venir sur l’importance relative de la biodiversité microbienne et de l’habitat sur  la biodégradation des matières organiques ou encore la typologie de la dynamique des matières organiques dans  les agrégats produits par les lombriciens seront poursuivis. Cela permet de concrétiser le lien entre le service Maintien de la biodiversité et le service Régulation du climat, au travers en particulier des fonctions de stockage de carbone et d’azote.