Évaluation de l’impact de la culture de colza sur la biodiversité aviaire en France : enjeux, méthodes, premiers résultats

摘要: Indices based on common birds are suitable to represent biodiversity, and now commonly used. Farmland birds’ indices in France Europe show worrying trends. A diagnosis of the impact oilseed crops raises methodological issues. Ecological studies usually establish statistical links between agriculture described by great types farming systems. The specific case landscapes with cereals cropping systems requires more precise descriptions. We carried out a study using national databases assess land use at scale small agricultural regions. importance rape area was not major determinant indices, models explained little observed variability. This suggests should take other factors into account, like management landscape configuration. exploratory correlations is complementary analytical accurate field highlight causality effects.