Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
3877
|
Gammarus fasciatus
|
Competition
|
Anecdotal
|
N/A
|
Echinogammarus ischnus & Gammarus fasciatus directly compete for resources
|
Great Lakes
|
13595
|
9782
|
Gammarus fasciatus
|
Competition
|
Anecdotal
|
N/A
|
Gammarus fasciatus may share food resources with Hyalella azteca.
|
Middle Sister Island, Lake Erie, USA
|
16374
|
9783
|
Gammarus fasciatus
|
Competition
|
Observational
|
Field
|
Possible intraguild predation of introduced Gammarus fasciatus and competition for food may change population structure, causing a decrease of abundance or disappearance of native or alien gammarid species.
|
Gulf of Finland
|
30481
|
9784
|
Gammarus fasciatus
|
Competition
|
Experimental
|
Laboratory
|
Invasive Echinogammarus ischnus is replacing Gammarus fasciatus at some sites in the upper St. Lawrence River (where G. fasciatus is native). However, they coexist in other habitats.
|
|
24601
|
9785
|
Gammarus fasciatus
|
Competition
|
Observational
|
Field
|
Invasive Echinogammarus ischnus has been observed replacing Gammarus fasciatus on hard substrates throughout the lower Great Lakes.
|
Great Lakes
|
16364
|
9786
|
Gammarus fasciatus
|
Competition
|
Experimental
|
Field
|
Gammarus fasciatus has been replaced by the invasive Echinogammarus ischnus throughout the lower Great Lakes. E. ischnus was observed preying on juvenile G. fasciatus.
|
St. Lawrence River
|
43388
|