Published in PhytoKeys
The segetal flora of winter crops includes mostly native or archaeophyte annual species that are often strong specialists of their habitats. Threatened by the intensification of agriculture, segetal flora is particularly valuable from a perspective of biodiversity conservation and evolution. Moreover, it contributes to maintain biodiversity in agro...
Published in Frontiers in Microbiology
The rhizosphere hosts a complex web of prokaryotes interacting with one another that may modulate crucial functions related to plant growth and health. Identifying the key factors structuring the prokaryotic community of the plant rhizosphere is a necessary step toward the enhancement of plant production and crop yield with beneficial associative m...
Published in Proceedings of the National Academy of Sciences of the United States of America
Both inorganic fertilizer inputs and crop yields have increased globally, with the concurrent increase in the pollution of water bodies due to nitrogen leaching from soils. Designing agroecosystems that are environmentally friendly is urgently required. Since agroecosystems are highly complex and consist of entangled webs of interactions between pl...
La description des attributs botaniques et éthologiques du patrimoine floristique messicole des agroécosystèmes à l’Aurès, Nord-est d’Algérie s’appuie sur 144 relevés. Cette étude a permis d’inventorier 77 espèces adventices, appartenant essentiellement aux dicotylédones et monocotylédones, réparties en 23 familles botaniques, dont quatre fournisse...
Published in Ecological applications : a publication of the Ecological Society of America
The habitat boundaries between crops and seminatural areas influence bee movements and pollination services to crops. Edges also provide favorable conditions for invasive plants, which may usurp pollinators and reduce visitation to native or crop plants. Alternatively, floral displays of alien plants may facilitate, or increase, the pollination suc...
Published in Frontiers in Genetics
Changes in landscape structure can affect essential population ecological features, such as dispersal and recruitment, and thus genetic processes. Here, we analyze the effects of landscape metrics on adaptive quantitative traits variation, evolutionary potential, and on neutral genetic diversity in populations of the Neotropical savanna tree Tabebu...
Published in Insects
The degree of trophic specialization of interacting organisms impacts on the structure of ecological networks and has consequences for the regulation of crop pests. However, it remains difficult to assess in the case of parasitoids. Host ranges are often established by listing host records from various years and geographic areas in the literature. ...
Published in Ecological applications : a publication of the Ecological Society of America
Nitrogen (N) losses from intensified agriculture are a major cause of global change, due to nitrate (NO3 - ) export and the eutrophication of aquatic systems as well as emissions of nitrous oxide (N2 O) into the atmosphere. Diversified agroecosystems with legume cover crops couple N and carbon (C) inputs to soil and reduce N pollution, but there is...
ABSTRACT We surveyed parasitoid wasps (Hymenoptera) in two guarana plantations in the central Brazilian Amazon (one conventionally, and one organically managed), as well as in adjacent forest and edge areas between crop and forest. We evaluated differences between management systems in parasitoid diversity and abundance, and assessed the importance...
Published in Cahiers Agricultures
Les insectes ravageurs représentent une contrainte majeure à l’augmentation du rendement en culture cotonnière en Afrique de l’Ouest. Les filières cotonnières se sont engagées, à des degrés divers, dans des démarches de gestion intégrée des ravageurs pour réduire l’utilisation des insecticides et limiter en amont les risques sanitaires et environne...
