| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
7451
|
Carex acutiformis
|
Competition
|
Observational
|
Field
|
Carex acutiformis dominated a 6 acre open marsh of native trees, shrubs, vines, grasses, forbs, and ferns after introduction.
|
Ottawa, Canada
|
25183
|
|
7892
|
Carex acutiformis
|
Competition
|
Observational
|
Field
|
Carex acutiformis was discovered dominating a 6-acre open marsh area in the Stony Swamp Conservation Area near Ottawa, ON, where it co-existed with native trees but had displaced nearly all other native plants in both open water and some relatively dry areas.
|
Ottawa, Ontario
|
25183
|
|
7893
|
Carex acutiformis
|
Competition
|
Observational
|
Field
|
Carex acutiformis may be a very serious threat to native vegetation on a local geographic scale due to its ability to spread rapidly via vegetative growth and out-compete native species for nutrients and light.
|
Ottawa, Ontario
|
25183
|
|
7894
|
Carex acutiformis
|
Competition
|
Anecdotal
|
N/A
|
In 1982, Carex acutiformis was observed forming a near monoculture around the entirety of St. Joseph Lake, South Bend, IN.
|
St. Joseph Lake, South Bend, Indiana, USA
|
703
|