0000000000108971
AUTHOR
Christine Plumejeaud
The DISCO-WEED project : disentangling the role of anthropic DISturbances and eCOlogical processes on WEED community assembly
EAGESTADINRA; The DISCO-WEED project : disentangling the role of anthropic DISturbances and eCOlogical processes on WEED community assembly. Sfécologie-2016, International Conference of Ecological Sciences
Weed metacommunity dynamics in intensive farmland landscapes reveal complex interactions between local disturbance patterns and spatial dispersal
EAGESTAD INRA; Metacommunity theory represents an exciting framework to identify the ecological mechanisms shaping the spatio-temporal organization of species assembly. Among them, dispersal and niche-based processes have been proposed as major drivers of metacommunity dynamics, whose relative role has led to the emergence of distinct paradigms. Mass-effect emphasizes a greater influence of dispersal whereas patch quality is of primary importance in the species-sorting perspective. Weeds represent the basic trophic component in agricultural food webs, but may induce crop yield loss. Many weed species occur in both crop and non-crop areas such as field edges. Recent studies have revealed the…
Ecological mechanisms shaping weed assembly in intensive farmland landscapes
EAGESTAD INRA; The ecological mechanisms shaping plants assemblages are multiple and scale-dependent. While the differentiation of resource patches may govern assembly rules at intermediate scales, the role dispersal processes is expected to decrease and the one of species interaction to increase from large to fine spatial scale. In this study, we investigate the contribution of these three processes to weed assembly based on a hierarchical sampling design conducted in 454 arable fields of the LTSER Zone Atelier ‘Plaine & Val de Sèvre’ from 2014 to 2016 . Using multiplicative diversity partitioning, the total field weed diversity was decomposed into four metrics, corresponding to difference…
Towards sustainable and multifunctional agriculture in farmland landscapes: Lessons from the integrative approach of a French LTSER platform
International audience; Agriculture is currently facing unprecedented challenges: ensuring food, fiber and energy production in the face of global change, maintaining the economic performance of farmers and preserving natural resources such as biodiversity and associated key ecosystem services for sustainable agriculture. Addressing these challenges requires innovative landscape scale farming systems that account for changing economic and environmental targets. These novel agricultural systems need to be recognized, accepted and promoted by all stakeholders, including local residents, and supported by public policies. Agroecosystems should be considered as socio-ecological systems and alter…