Volume 18, Number 3, Mai-Juin 2011Dossier : Biodiversité et cultures végétales (approches)
|Page(s)||145 - 152|
|Section||Agronomie – Environnement|
|Published online||15 May 2011|
Évaluation de l’impact de la culture de colza sur la biodiversité aviaire en France : enjeux, méthodes, premiers résultats
Cetiom, Centre de Grignon, avenue Lucien Brétignières, 78 850
2 Inra, UMR 1048 SAD-APT, BP01, 78 850 Thiverval-Grignon, France
3 Muséum National d’Histoire Naturelle, CRBPO, BP 51, 55 rue Buffon, 75005 Paris, France
Indices based on common birds are suitable to represent biodiversity, and are now commonly used. Farmland birds’ indices in France and Europe show worrying trends. A diagnosis of the impact of oilseed crops raises methodological issues. Ecological studies usually establish statistical links between common birds and agriculture described by great types of farming systems. The specific case of landscapes with cereals cropping systems requires more precise descriptions. We carried out a study using national databases to assess the impact of land use at the scale of small agricultural regions. The importance of oilseed rape area was not a major determinant of birds’ indices, and the statistical models explained little of the observed variability. This suggests the diagnosis should take other factors into account, like management of the cropping systems and the landscape configuration. This exploratory study based on statistical correlations is complementary to analytical and accurate field studies more suitable to highlight causality effects.
Key words: oilseed rape / biodiversity / land use / farmland birds
© John Libbey Eurotext 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.