| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
3505
|
Eichhornia crassipes
|
Competition
|
Observational
|
Field
|
Growth of Pontederia crassipes occurs at a higher rate than other floating plants, forming thick mats that block sunlight to the water column, reducing submerged vegetation abundance, and floating plant species richness.
|
|
34001
|
|
7008
|
Eichhornia crassipes
|
Competition
|
Observational
|
Laboratory
|
Eichhornia crassipes is very efficient in taking up calcium, magnesium, sulfur, ferric iron, manganese, aluminum, boron, copper, molybdenum, zinc, nitrogen, phosphorus, and potassium, favoring its growth over other aquatic species.
|
|
42102
|
|
7009
|
Eichhornia crassipes
|
Competition
|
Anecdotal
|
N/A
|
Eichhornia crassipes is an invasive weed known to out-compete native plants and negatively affect microbes, including phytoplankton.
|
|
42102
|
|
7010
|
Eichhornia crassipes
|
Competition
|
Observational
|
Field
|
In 1994, about 10 km2 of Dianchi Lake in the Yunnan Province of China was completely covered by dense mats of Eichhornia crassipes. The rapid spread of this weed has resulted in declines in native aquatic plants and threats to local biodiversity.
|
Dianchi Lake, China
|
42103
|
|
7011
|
Eichhornia crassipes
|
Competition
|
Observational
|
Field
|
In Lake Okeechobee, Eichhornia crassipes displaced native bulrush and shaded out native submersed plants that are important habitat for fish, waterfowl, and other animals. Water hyacinth infestations also interfere with the nesting and feeding habits of the endangered Everglades snail kite (Rostrhamus sociabilis plumbeus), and in extreme cases can push over or uproot emergent vegetation in which kites build their nests.
|
Lake Okeechobee, Florida
|
42104
|
|
7662
|
Eichhornia crassipes
|
Competition
|
Anecdotal
|
N/A
|
Dense mats of Eichhornia crassipes block light and reduce phytoplankton productivity.
|
|
42428
|