| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
5411
|
Gambusia affinis
|
Habitat Alteration
|
Observational
|
Field
|
In a field study, Gambusia affinis altered the zooplankton community composition and size distribution, likely through size-selective predation. Consequently, Gambusia affinis can indirectly slow leaf-litter decomposition rates due to predation on detritivores. These reductions may lead to trophic cascades and indirect impacts on ecosystem functions
|
New South Wales
|
39141
|
|
5412
|
Gambusia affinis
|
Habitat Alteration
|
Anecdotal
|
N/A
|
Introduction of Gambusia affinis can also precipitate algal blooms via heightened consumption of zooplankton grazers
|
|
1181
|
|
5413
|
Gambusia affinis
|
Habitat Alteration
|
Experimental
|
Laboratory
|
The reduction in zooplankton abundance and subsequent trophic cascade caused by Gambusia affinis led to increased chlorophyll concentrations in mesocosms
|
|
39146
|
|
5414
|
Gambusia affinis
|
Habitat Alteration
|
Experimental
|
Field
|
Tthe introduction of Gambusia affinis in a natural wetland was associated with a 50% decline in relative phytoplankton fluorescence and total phosphorus, and sharp increases in N:P ratios in the water column. These impacts may be due to the assimilation of fish biomass acting as sink for nutrients
|
California
|
39144
|