elodea canadensis การใช้

• _Elodea canadensis ( Canadian pondweed ).
• The dreaded invasive species, Elodea canadensis ( pondweed ) has been detected in the river Figgjo as has agricultural pollution.
• The condition of Carrickport lough was reported as unsatisfactory in 2007, with Potamogeton pondweed and the alien species Elodea canadensis are also present.
• "Elodea canadensis ", sometimes called American or Canadian water weed or pond weed, is widely known as the generic water weed.
• High levels of invasive alien waterweed species, Canadian waterweed ( Elodea canadensis ) and Nuttall s waterweed ( Elodea nuttalli ) if left unchecked, will continue to spread and overwhelm other native aquatic plants.
• Vegetation consists mainly of floating beds of Water Hyacinth ( " Eichhornia crassipes " ), submergent beds of Waterweed ( " Elodea canadensis " ), and marshy areas with Spikerushes ( " Eleocharis elegans " ) and Giant Bulrush ( " Scirpus californicus " ).
• Despite their proximity, the two pools differ ecologically .'Double Kettle'is fed by surface runoff and its water is turbid, supporting only an impoverished surface vegetation of pondweeds, including the alien Canadian pondweed, " Elodea canadensis "; it is fringed mainly by common reed, " Phragmites australis ", with some saw-sedge and common club-rush, " Scirpus lacustris ".