waterweed การใช้

• In the wild, eggs are laid on waterweeds.
• Brazilian waterweed limits the lake's usefulness.
• Now the remnant of Kuttipuram Kovilakam is only a pond with dilapidated pavement and covered with waterweed.
• The trees have allowed the current to slow and create marshes and waterweeds that slow the current even more.
• Its main food in most waters however comprises various waterweeds such as species of Potamogeton for which it commonly dives.
• Waterweed or anacharis ( " Elodea spp . " ) is a submerged plant that is highly effective in maintaining clear water.
• The lake, which had become completely choked by introduced waterweed was reclaimed and the overgrown landscape was carefully cleared of weeds and rubbish.
• It has the largest reed-bed in England and supports rare waterweeds such as the holly-leaved naiad and three rare species of stonewort.
• Looking down from the aging iron bridge into the water's flow, you can see the green waterweeds individually pulled in the direction of the current.
• Common water-crowfoot, chara species, Canadian waterweed, slender spike-rush, perfoliate pondweed and spiked water milfoil are the other main species present.
• These include bulrush, pondweed, duckweed, waterweed, and some types of algae, all of which are typical for a stream in the eastern United States.
• This woman was suffering from a bloom of algae that a UV inhibitor might cure; that fellow was afflicted with South American waterweed, a recent escapee from the aquarium trade.
• 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.
• 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.
• 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.
• They are worried a slower river will have pollution problems because there will be less water to dilute contaminants, and they say less water in the river would create favorable conditions for the Ludwigia waterweed that harbors mosquitoes.
• The others have the characteristic wide flat beak adapted to dredging-type jobs such as pulling up waterweed, pulling worms and small molluscs out of mud, searching for insect larvae, and bulk jobs such as dredging out, holding, turning head first, and swallowing a squirming frog.
• 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 " ).