Digital image analysis for studying eco-hydraulic processes in open channels - AgroParisTech Accéder directement au contenu
Communication Dans Un Congrès Année : 2018

Digital image analysis for studying eco-hydraulic processes in open channels

Résumé

The long-distance dispersal of weeds through open water channels has been poorly studied despite its primary importance for understanding weed spread in agro-ecosystems and its negative impacts on crop production. We proposed here an experimental study focusing on the quantification of external factors affecting the seed dispersal kernel during an irrigation event in a vegetated channel. We chose Johnsongrass seeds, one the most widespread weeds in the world that affects production of high-quality hay in permanent grasslands. We used a photogrammetric approach combined to differential GPS surveys to finely estimate the external factors susceptible to affect seed dispersal, either biotic or abiotic. We used fluorescent powders to efficiently detect the seeds after a dispersal event using UV lights.
Fichier principal
Vignette du fichier
Vinatier2018a.pdf (2.06 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01816131 , version 1 (14-06-2018)

Identifiants

  • HAL Id : hal-01816131 , version 1

Citer

F. Vinatier, Gabrielle Rudi, Jean-Stéphane Bailly, Gilles Belaud. Digital image analysis for studying eco-hydraulic processes in open channels. 5th IAHR Europe congress, Jun 2018, Trento, Italy. ⟨hal-01816131⟩
152 Consultations
42 Téléchargements

Partager

Gmail Facebook X LinkedIn More