| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
3510
|
Eichhornia crassipes
|
Commerce
|
Observational
|
Field
|
Dense mats of Pontederia crassipes can reduce flow in irrigation channels, interfere with watercraft navigation, and clog hydroelectric power generation.
|
|
34001
|
|
3512
|
Eichhornia crassipes
|
Commerce
|
Observational
|
Field
|
Pontederia crassipes interferes with rice paddy seed germination and seedling establishment.
|
|
34001
|
|
4546
|
Eichhornia crassipes
|
Commerce
|
Experimental
|
Laboratory
|
Eichhornia crassipes has been used for bio-oil production.
|
|
36479
|
|
7027
|
Eichhornia crassipes
|
Commerce
|
Observational
|
Field
|
The overall economic impacts of Eichhornia crassipes in seven African countries have been estimated at between US$20-50 million every year. Across Africa costs may be as much as $100 million annually.
|
|
42105
|
|
7030
|
Eichhornia crassipes
|
Commerce
|
Anecdotal
|
N/A
|
The large, dense monoculture formed by Eichhornia crassipes covers lakes and rivers, blocking waterways and interfering with the water transport of agriculture products, water power, and irrigation of agricultural fields.
|
|
42102
|
|
7031
|
Eichhornia crassipes
|
Commerce
|
Observational
|
Field
|
In Benin, the infestation of E. crassipes was estimated to reduce the annual income of the villagers by US$84 million, who relied on fishing and trade for an income. Biological control for the infested waters in Benin were estimated to be United States $2.09 million.
|
Southern Benin
|
30436
|
|
7663
|
Eichhornia crassipes
|
Commerce
|
Observational
|
Field
|
In the Guadalquivir river branch located in Seville Spain, the total effort to inspect the presence of Eichhornia crassipes, including preliminary inspection, initial control stage and monitoring, took 150 days. Five to seven people were needed during initial inspection tasks by boat, whereas two or three workers carried out further removal and biomass disposal tasks. The total biomass removed was 1,931kg and the total cost of the action was ca. €22,500. In total, the cost/biomass ratio was €11.6/kg and the cost/surface ratio €205/ha.
|
Guadalquivir river branch in Seville, Spain
|
42428
|