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Les abeilles dans les prairies d'exploitations d'élevage aux environnements agricoles contrastés

Abstract : In areas of less intensive agriculture, permanent grasslands can act as favourable habitat and generate consistent food resources for bees. We studied bee populations over 2 years on 4 farms. Sampling took place during 2 periods each year. There were 3 study regions: Cantal, Corrèze, and Vienne. Two farms were located in the Cantal at high elevations, the third was found in the Corrèze, and the fourth was situated in the Vienne in the flatlands. The first three were grazing-based systems exploiting long-term grasslands; the latter was a mixed crop-livestock system. Among the 489 insects captured, we observed 75 species of bees from 14 genera. Most (80%) were solitary bees; the specific percentage varied by site. Only the honey bee was observed on all 4 farms. Although the Cantal farms had fewer bees total, they did have greater numbers of rare species and species from more diverse families and genera. These 2 farms utilised permanent grasslands and had maintained numerous natural landscape features.
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https://hal.inrae.fr/hal-02622070
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Laurent Lanore, David Genoud, Andre Blanchetete, Sandra Novak, Géraldine Fleurance, et al.. Les abeilles dans les prairies d'exploitations d'élevage aux environnements agricoles contrastés. Fourrages, Association Française pour la Production Fourragère, 2018, pp.263-268. ⟨hal-02622070⟩

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