| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
8658
|
Marsilea quadrifolia
|
Competition
|
Anecdotal
|
N/A
|
Marsilea quadrifolia is capable of outcompeting native aquatic and moist terrestrial species and creating monotypic vegetative stands.
|
|
14442
|
|
8659
|
Marsilea quadrifolia
|
Competition
|
Anecdotal
|
N/A
|
Monospecific stands of Marsilea quadrifolia can also persist throughout the winter seasons because of the underground rhizomes.
|
|
14442
|
|
8660
|
Marsilea quadrifolia
|
Competition
|
Experimental
|
Laboratory
|
During the growing season, Marsilea quadrifolia plants are able to adjust the angle of the floating leaflets to optimize access to sunlight and the ability to photosynthesize. This ability could allow this species to outcompete neighboring species for sunlight.
|
|
35274
|
|
8661
|
Marsilea quadrifolia
|
Competition
|
Anecdotal
|
N/A
|
The presence of Marsilea quadrifolia in an aquatic ecosystem can also have an effect on molluscan communities.
|
|
18779
|
|
8662
|
Marsilea quadrifolia
|
Competition
|
Anecdotal
|
N/A
|
Other sources report that Marsilea quadrifolia does not spread aggressively and poses a small ecological threat.
|
|
14442
|
|
8663
|
Marsilea quadrifolia
|
Competition
|
Observational
|
Field
|
Marsilea quadrifolia only migrated 151 feet per year in Spring Creek, Illinois, for a total range expansion of 1 mile downstream in 35 years.
|
McDonough County, Illinois
|
18049
|
|
8664
|
Marsilea quadrifolia
|
Competition
|
Anecdotal
|
N/A
|
The New York Invasive Species Council ranks Marsilea quadrifolia as posing an unknown ecological threat.
|
|
25266
|