| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
5172
|
Cherax quadricarinatus
|
Habitat Alteration
|
Observational
|
Field
|
Macroinvertebrate species richness, including gastropod species richness, was lower in pools that had been invaded by Cherax quadricarinatus in northwestern Australia (where C. quadricarinatus is a native transplant).Invertebrate composition was also significantly different between the invaded and non-invaded pools.
|
Northwestern Australia
|
37838
|
|
5173
|
Cherax quadricarinatus
|
Habitat Alteration
|
Observational
|
Field
|
Pools that had been invaded by Cherax quadricarinatus in northwestern Australia (where C. quadricarinatus is a native transplant) completely lacked macrophytes, whereas pools without the crayfish had 48% macrophyte cover. It is not clear if the mechanism for this impact is through herbivory or physical removal.
|
Northwestern Australia
|
37838
|
|
5175
|
Cherax quadricarinatus
|
Habitat Alteration
|
Anecdotal
|
Laboratory
|
Cherax quadricarinatus feeds heavily upon native macrophytes and detritus, which may cause habitat changes in the littoral zone.
|
Lake Kariba, Zimbabwe
|
37842
|
|
9577
|
Cherax quadricarinatus
|
Habitat Alteration
|
Observational
|
Field
|
Foraging activity of Cherax quadricarinatus disrupt and alter benthic habitat and aquatic vegetation.
|
|
43142
|