| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
1879
|
Lepomis microlophus
|
Competition
|
Observational
|
Field
|
In inland lakes of southern Michigan, introduced redear is associated with ecological changes in populations of pumpkinseed (L. gibbosus), a native molluscivore. Effects of introduced redear sunfish on pumpkinseed include reduced consumption of snails and reduced population densities. Redear sunfish had a competative advantage with snail crushing ability, were able to start feeding on snails at a younger age than the native pumpkin seed; snails are a limited resource in the study lake.
|
Lee Lake and Saubee Lake, Michigan
|
24281
|
|
1880
|
Lepomis microlophus
|
Competition
|
Observational
|
Field
|
Pumpkinseed populations were reduced in most lakes where redear sunfish had been introduced, due to the competition for snails, a limited food resource.
|
|
14505
|
|
1881
|
Lepomis microlophus
|
Competition
|
Observational
|
Field
|
When introduced into a water body, competition between the two species resulted in a 56% reduction in pumpkinseed abundance, and a 69% reduction in average snail biomass when compared with lakes without redear.
|
W. K. Kellogg Biological Station of Michigan State Universi, Michigan, USA
|
14505
|