| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
3507
|
Eichhornia crassipes
|
Predation/Herbivory
|
Observational
|
Field
|
Pontederia crassipes is associated with a diversity of invertebrate species, including crustaceans, rotifers, insects, and zooplanktons.
|
|
34001
|
|
3513
|
Eichhornia crassipes
|
Predation/Herbivory
|
Observational
|
Field
|
Pontederia crassipes reduces phosphorus, sunlight, and dissolved oxygen, all needed for phytoplankton and fishes.
|
|
34001
|
|
3514
|
Eichhornia crassipes
|
Predation/Herbivory
|
Observational
|
Field
|
Drifting mats of Pontederia crassipes disrupt submerged vegetation and reduce floating and marginal food plants for waterfowl.
|
|
34001
|
|
7012
|
Eichhornia crassipes
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Eichhornia crassipes forms dense monocultures that can threaten local native species diversity and change the physical and chemical aquatic environment, thus altering ecosystem structure and function by disrupting food chains and nutrient cycling.
|
|
42102
|
|
7013
|
Eichhornia crassipes
|
Predation/Herbivory
|
Observational
|
Field
|
Eichhornia crassipes can potentially alter predator-prey relationships. In San Joaquin Delta, California, insect densities where lower in patches of E. crassipes and there was a difference in insect composition between E. crassipes and the native pennywort (Hydrocotyle umbellata). It is suggested that the presence of E. crassipes may influence native invertebrate community assemblages.
|
San Joaquin Delta, California
|
30554
|
|
7417
|
Eichhornia crassipes
|
Predation/Herbivory
|
Experimental
|
Laboratory
|
In a laboratory setting Pomacea maculata showed high levels of consumption of the native species Ceratophyllum demersum, Hymenocallis liriosme, Ruppia maritima, Sagittaria lancifolia and the invasive species Colocasia esculenta, Alternanthera philoxeroides, and Eichhornia crassipes.
|
|
17897
|
|
7661
|
Eichhornia crassipes
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Dense mats of Eichhornia crassipes block light and reduce phytoplankton productivity.
|
|
42428
|
|
9943
|
Eichhornia crassipes
|
Predation/Herbivory
|
Observational
|
Field
|
In Ethiopia, introduced Eichhornia crassipes was observed to have many arthropod herbivores including Neochetina bruchi, Neochetina eichhorniae, Spodoptera littoralis, Aphis gossypii, and
Tetranychus urticae.
|
Ethiopia
|
45343
|
|
10003
|
Eichhornia crassipes
|
Predation/Herbivory
|
Observational
|
Field
|
Samples of Eichhornia crassipes collected from South Carolina had mercury concentrations ranging from 2.2 to 58.7 ng g^- 1 dw in the shoots and 29.7 to 71.9 ng g^- 1 dw in the roots.
|
Waccamaw River, South Carolina
|
45513
|
|
10006
|
Eichhornia crassipes
|
Predation/Herbivory
|
Observational
|
Field
|
Samples of Eichhornia crassipes collected from South Carolina had methylmercury concentrations ranging from 0.84 to 2.24 ng g^- 1 dw in the shoots and 8.95 to 37.1 ng g^- 1 dw in the roots.
|
Waccamaw River, South Carolina
|
45513
|
|
10023
|
Eichhornia crassipes
|
Predation/Herbivory
|
Observational
|
Laboratory
|
In a laboratory experiment, Megamelus scutellaris would graze upon Eichhornia crassipes and this herbivory would reduce the competitive ability against Salvinia minima by 75%.
|
South Africa
|
45535
|
|
10047
|
Eichhornia crassipes
|
Predation/Herbivory
|
Experimental
|
Laboratory
|
In a laboratory experiment, Eichhornia crassipes decreased phytoplankton diversity and increased the diversity of metazoan zooplankton through promoting the proliferation of rotifers.
|
China
|
45801
|