Agricultural practices in olive groves modify weeds floral traits and resources throughout the year

Genty Léa, Metay Aurélie, Kazakou Elena, Baude Mathilde, Gardarin Antoine, Michelot-Antalik Alice, Barkaoui Karim. 2025. Agricultural practices in olive groves modify weeds floral traits and resources throughout the year. Agriculture, Ecosystems and Environment, 377:109280, 9 p.

Url - jeu de données - Dataverse Cirad : https://doi.org/10.18167/DVN1/B9HXLE

Résumé : Lack of floral resources is suspected to be one of the factors involved in flower-visiting insect declines. Because agricultural landscapes are often poor in flowers, it seems crucial to assess weeds as floral resources to feed flower-visiting insects and to identify the factors that drive floral productivity, defined as floral biomass produced by the weed community. We monitored floral presence, productivity and traits in 16 olive groves from September 2021 to June 2022. The objectives were to understand to which extinct abiotic factors, among agricultural practices, pedoclimate and weather, determine floral productivity and to analyse the relationships between floral traits, floral presence and productivity. We found mowing frequency (2–3 per year on average) increased mean floral area and height, advanced flowering onset, and increased floral functional diversity and flowering species richness, which in turn increased floral presence and productivity.

Mots-clés Agrovoc : mauvaise herbe, agroécosystème, communauté rurale, pratique agricole, désherbage, floraison, fleur

Mots-clés géographiques Agrovoc : France

Mots-clés libres : Floral productivity, Floral resources, Floral traits, Woody agroecosystems, Mowing, Mediterranean

Agences de financement hors UE : Région Occitanie Pyrénées-Méditerranée, Agence Nationale de la Recherche, Agropolis Fondation

Projets sur financement : (FRA) Boost ecosystem services through highly Biodiversity-based Mediterranean Farming systems, (FRA) Labex AGRO 2011-LBX-002

Auteurs et affiliations

• Genty Léa, CIRAD-PERSYST-UMR ABSys (FRA) - auteur correspondant
• Metay Aurélie, INRAE (FRA)
• Kazakou Elena, Montpellier SupAgro (FRA)
• Baude Mathilde, Université d'Orléans (FRA)
• Gardarin Antoine, INRAE (FRA)
• Michelot-Antalik Alice, Université de Lorraine (FRA)
• Barkaoui Karim, CIRAD-PERSYST-UMR ABSys (FRA) ORCID: 0000-0002-5787-3748

Source : Cirad-Agritrop (https://agritrop.cirad.fr/610286/)

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