Case study sites

Two people in boat on river removing seaweed.
Removal of Juncus bulbosus in Otra, June 2019. (Photo: NIVA)
Lake with algae
Elodea nuttallii and filamentous green algae reach the water surface in Lake Kemnade, July 2020 (Photo: S. Hilt)
River Spree with dense macrophyte stands of Sagittaria sagittifolia and Potamogeton perfoliatus (Photo: S. Hilt).
Ludwigia Grand-Lieu river overgrown by plants
Grand-Lieu lake invaded by Ludwigia species in July 2019 (Photo: Gabrielle Thiebaut).
Hartbeespoort Dam
Eichhornia crassipes invasion on Hartbeespoort Dam near Pretoria, South Africa. (Photo: Julie Coetzee).
Dense U. arrecta in Guaraguaçu River (Photo: Andre A. Padial).


Last updated 28.09.2020