EPPO Global Database

EPPO Reporting Service no. 05 - 2007 Num. article: 2007/102

Ludwigia peploides and Eichhornia crassipes found in Corsica (FR)

On 2007-06-19, the ‘Conservatoire Botanique’ of Corsica (FR) recorded two new invasive plant species on its territory. Both Ludwigia peploides (Onograceae) and Eichhornia crassipes (Pontederiaceae) were found at the purifying water station near the Figari airport. Both aquatic plants were found in 1.5 m deep decantation basins covering 1500 m². They are in activity throughout the year so the plants may not desiccate. Cattle also drink from these basins and eat both plant species, possibly facilitating their spread.
Ludwigia peploides has also been observed downstream up to 100 m along a water course where cattle drink. The plants have settled in the meadow following cattle movements and, according to the cattle breeder, they have probably been present on this site for three years. Ludwigia peploides reproduces very efficiently vegetatively but many seedlings have also been observed, thus indicating that sexual reproduction was also taking place. The ‘Conservatoire Botanique’ of Corsica is fully aware of the risks and as soon the plants were discovered an eradication programme was initiated. Plants were removed and filters installed.


Contact: Laetitia Hugo, Conservatoire Botanique de Corse, hugot@fr.oleane.com