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The water hyacinth would then be transferred to a dumping site and allowed to decompose, which releases CO 2, methane, and nitrogen oxides. [32] Water hyacinth has been widely introduced in North America, Europe, Asia, Australia, Africa, and New Zealand. [33] In many areas, it has become an important and pernicious invasive species.
Hyacinth-choked lakeshore in 2001 at Ndere Island, Lake Victoria, Kenya Boat trapped by hyacinth (2017). Water hyacinth has become a major invasive plant species in Lake Victoria and while it is native to the continent of South America, human activity has introduced the greenery to Lake Victoria, where it is claimed to have negatively affected local ecosystems.
The mottled water hyacinth weevil, Neochetina eichhorniae, is a beetle that has been introduced as a biological pest control herbivore agent to waterways and lakes in countries worldwide to control the spread of the invasive noxious weed species Eichhornia crassipes, the water hyacinth, an aquatic plant native to the Amazon basin.
The herbicide is meant to kill nonnative plants such as hyacinth, South American spongeplant, Uruguay water primrose, Alligator weed, Brazilian waterweed, curlyleaf pondweed, Eurasian watermilfoil ...
Invasive water hyacinths clog the Pasig River in Manila, Philippines in October 2020. [112] Globally, invasive species management and control are substantial economic burdens, with expenditures reaching approximately $1.4 trillion annually. [55] The economic impact of invasive alien species alone was estimated to exceed $423 billion annually as ...
Megamelus scutellaris, the water hyacinth planthopper, is a true bug native to South America. It is used as a biological control agent to manage and reduce the spread of the water hyacinth (Pontederia crassipes, formerly Eichhornia crassipes), an invasive aquatic plant native to South America that has invaded many freshwater systems globally.
Water lettuce is similar to water hyacinths in that it is also free-floating, reproduces rapidly, blocks canals and water control devices, and can form mats that block sunlight and oxygen to plants and animals under water. Authorities use the same methods to eradicate water lettuce as they do water hyacinths. [29] Neyraudia reynaudiana
Such species include Water hyacinth which is invasive in many tropical and sub-tropical locations including much of the southern US, many Asian countries and Australia. New Zealand stonecrop is a highly invasive plant in temperate climates spreading from a marginal plant to encompassing the whole body of many ponds to the almost total exclusion ...