Inventaire floristico-sociologique de la flore arvale et rudérale du Centre Inra Antilles Guyane

Abstract

The study of the weed flora of the French Antilles and Guyana agronomic research center, aimed at making an inventory of all the plant species that occur in our fields. With the help of the book of the botanist Jacques Fournet, we could identify, characterize, and classify this flora according to its agronomic, ecological and medicinal characteristics, and thus, to predict its ecological dynamics. Based on phytosociological methodology, using a field map of our research center, we divided our main study area in smaller sets. With quadrats and line transects, we assessed species frequency. We found 205 species, including 7 new ones for Guadeloupe, in the entire prospected zone. Afterwards, we classified them in terms of services or harmfulness, for environment and agrosystems. We now need to understand the organization of plant communities, weeds association dynamics, and others interactions (functional traits, allelopathy) between crops and weeds.