| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
3123
|
Hygrophila polysperma
|
Habitat Alteration
|
Anecdotal
|
Laboratory
|
Hygrophila polysperma shares characteristics with Hydrilla verticillata and may alter habitat conditions based on similar physiology.
|
|
10719
|
|
7080
|
Hygrophila polysperma
|
Habitat Alteration
|
Anecdotal
|
N/A
|
Dense stands of Hygrophila polysperma trap sediments, slow water flow in irrigation channels and waterways. "Sediment levels increase with increasing H. polysperma abundance."
|
|
31293
|
|
7081
|
Hygrophila polysperma
|
Habitat Alteration
|
Observational
|
Field
|
Hygrophila polysperma has spread rapidly where it exists in Texas, historically occupying up to 20% of the Comal River’s area, where it is thought to replace native macrophytes.
|
Comal River, Texas
|
31299
|