Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
4619
|
Trapa natans
|
Habitat Alteration
|
Observational
|
Field
|
Trapa natans removes significant amount of nitrogen from river systems.
|
Hudson River, New York, USA
|
27619
|
4623
|
Trapa natans
|
Habitat Alteration
|
Observational
|
Field
|
Although Trapa natans forms dense beds that create hypoxic conditions in the water column, the beds create a microhabitat that supports high species diversity for insects and fish.
|
Hudson River, New York, USA
|
27617
|
4625
|
Trapa natans
|
Habitat Alteration
|
Observational
|
Field
|
Trapa natans forms dense mats in the Hudson River that support a more diverse and dense macroinvertebrate population and fish assemblage than the native plant Vallisneria americana.
|
Hudson River, New York, USA
|
17104
|
4631
|
Trapa natans
|
Habitat Alteration
|
Anecdotal
|
N/A
|
Trapa natans grows densely, shading the water and blocking the sun, preventing light penetration to other native plants.
|
Chesapeake Bay Watershed, US
|
15733
|
4634
|
Trapa natans
|
Habitat Alteration
|
Observational
|
Field
|
Trapa natans destroys native duck food beds, and is not a duck food plant.
|
Untied States, Canada
|
34984
|
4639
|
Trapa natans
|
Habitat Alteration
|
Experimental
|
Laboratory
|
Trapa natans removes large amount of nitrogen from systems.
|
|
28634
|
5135
|
Trapa natans
|
Habitat Alteration
|
Observational
|
Field
|
Low dissolved oxygen (< 2.5 mg/L) occurred within beds of Trapa natans during summer months, while dissolved oxygen never went below 5 mg/L for Vallisneria americana beds during the same period.
|
Hudson River, New York, USA
|
37750
|
6388
|
Trapa natans
|
Habitat Alteration
|
Anecdotal
|
Field
|
Trapa natans get dense enough and have thorns resulting in fish having difficulty swimming through the roots.
|
Oswegatchie River, New York
|
41886
|