| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
6520
|
Pacifastacus leniusculus
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Pacifastacus leniusculus displays opportunistic polytrophic feeding habits. It can have a considerable impact on populations of macro-invertebrates, benthic fish, and aquatic plants.
|
|
32576
|
|
6523
|
Pacifastacus leniusculus
|
Predation/Herbivory
|
Observational
|
Field
|
Pacifastacus leniusculus's highly polytrophic diet suggests that if they reach high abundance, they have the potential to affect a broad range of flora and fauna. An observational study reported a strong correlation between crayfish density and species richness.
|
River Clyde in South Lanarkshire, Scotland
|
32569
|
|
6524
|
Pacifastacus leniusculus
|
Predation/Herbivory
|
Experimental
|
Field
|
Removing Pacifastacus leniusculus has been shown to improve macroinvertebrate taxon richness as well as abundance.
|
UK Rivers
|
30942
|
|
9182
|
Pacifastacus leniusculus
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Pacifastacus leniusculus preys upon invertebrates including smaller crayfish in its range, as well as fish eggs and fry.
|
|
42544
|
|
9258
|
Pacifastacus leniusculus
|
Predation/Herbivory
|
Observational
|
Field
|
In Hungarian waters, the presence of Pacifastacus leniusculus resulted in statistically significant declines in relative abundance of Ephemeroptera, Odonata, and Trichoptera. Pacifastacus leniusculu presence also resulted in total macroinvertebrate relative abundance decline.
|
Hungary
|
40072
|