Caractérisation des conditions d'habitat des auxiliaires de culture dans le gradient bordure-centre des parcelles de blé d'hive

Abstract : This project aims to characterize a vegetation gradient from the edge to the center of cultivated fields sown with winter wheat, according to the specifications of organic agriculture, whether this gradient is favorable to pest control organisms, specifically ground beetles. For this, floristic surveys were conducted on six different areas (three woody edges and three grassy edges) at different distances: in the edge, forefront of culture, and at 1 - 5 - 15 - 30 meters of it. A taxonomic gradient was studied, but also functional, comparing functional traits in place and those that are particularly fond of ground beetles. Along this gradient, species richness, high in the edge, gradually decreases with a net change between it and the first rang crop. Regarding functional traits, they remain constant (size and seed mass, number of seeds produced). Only the structure tussock appears to decrease more sharply between the edge and the cultivated field. However, the different gradients studied include many assets and favor the progression of pest control organisms chosen.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/prive/BUS_M_2012_FERRER_MARIE-LINE.pdf
Complete list of metadatas

https://hal.univ-lorraine.fr/hal-01784486
Contributor : Memoires Ul <>
Submitted on : Thursday, May 3, 2018 - 2:59:22 PM
Last modification on : Friday, September 14, 2018 - 1:13:51 AM

Identifiers

  • HAL Id : hal-01784486, version 1

Collections

Citation

Marie-Line Ferrer. Caractérisation des conditions d'habitat des auxiliaires de culture dans le gradient bordure-centre des parcelles de blé d'hive. Sciences de l'environnement. 2012. ⟨hal-01784486⟩

Share

Metrics

Record views

23