Functional redundancy of weed seed predation is reduced by intensified agriculture
2024
Daouti, Eirini | Neidel, Veronika | Carbonne, Benjamin | Vašková, Hana | Traugott, Michael | Wallinger, Corinna | Bommarco, Riccardo | Feit, Benjamin | Bohan, David | Saska, Pavel | Skuhrovec, Jiří | Vasconcelos, Sasha | Petit, Sandrine | van der Werf, Wopke | Jonsson, Mattias | Swedish University of Agricultural Sciences = Sveriges lantbruksuniversitet (SLU) | Universität Innsbruck [Innsbruck] = University of Innsbruck | Institut de Génétique, Environnement et Protection des Plantes (IGEPP) ; Université de Rennes (UR)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Rennes Angers ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) | Crop research institute | Department of Ecology ; Swedish University of Agricultural Sciences = Sveriges lantbruksuniversitet (SLU) | Agroécologie [Dijon] ; Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Dijon ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) | Wageningen University and Research [Wageningen] (WUR)
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Afficher plus [+] Moins [-]anglais. Abstract Intensified agriculture, a driver of biodiversity loss, can diminish ecosystem functions and their stability. Biodiversity can increase functional redundancy and is expected to stabilize ecosystem functions. Few studies, however, have explored how agricultural intensity affects functional redundancy and its link with ecosystem function stability. Here, within a continental‐wide study, we assess how functional redundancy of seed predation is affected by agricultural intensity and landscape simplification. By combining carabid abundances with molecular gut content data, functional redundancy of seed predation was quantified for 65 weed genera across 60 fields in four European countries. Across weed genera, functional redundancy was reduced with high field management intensity and simplified crop rotations. Moreover, functional redundancy increased the spatial stability of weed seed predation at the field scale. We found that ecosystem functions are vulnerable to disturbances in intensively managed agroecosystems, providing empirical evidence of the importance of biodiversity for stable ecosystem functions across space.
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