| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
2659
|
Corbicula fluminea
|
Predation/Herbivory
|
Observational
|
Field
|
Corbicula suppressed phytoplankton chlorophyll a.
|
|
13212
|
|
2662
|
Corbicula fluminea
|
Predation/Herbivory
|
Experimental
|
N/A
|
A model estimated a 70% loss of phytoplankton biomass, due to the filtration by Corbicula, and a 61% decline in annual primary production compared with a situation without Corbicula. Model simulations also showed that zooplankton may have suffered as much as a 75% loss of biomass.
|
|
33137
|
|
2663
|
Corbicula fluminea
|
Predation/Herbivory
|
Observational
|
Field
|
Phytoplankton decline was observed in a river, and potentially in other European and North American rivers, is not only due to Corbicula clams, but to a synergistic effect of two Dreissena species present in the river throughout the year.
|
|
33134
|
|
2667
|
Corbicula fluminea
|
Predation/Herbivory
|
Experimental
|
Field
|
In field studies, increasing abundance of Corbicula was negatively associated with the abundance of benthic bacteria and flagellates but had no apparent effect on other protists or meiofauna. Where large populations occur, Corbicula has potential to have a large impact on both the benthic and pelagic fauna in the many streams.
|
|
20606
|
|
2696
|
Corbicula fluminea
|
Predation/Herbivory
|
Observational
|
Field
|
Corbicula fluminea appears to cause localized reduction of seston concentration and may rapidly clear the sediment boundary layer of food. There was no evidence of a negative impact on the distribution of the native bivalve in spite of high measured rates of water clearance by C. fluminea.
|
|
9096
|
|
5449
|
Corbicula fluminea
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Modest to dramatic declines in phytoplankton or seston have been seen in heavily infested habitats - quoting (Cohen et al. 1984, Lauritsen 1986, Leff et al. 1990, Phelps 1994)
|
North America
|
13063
|
|
5451
|
Corbicula fluminea
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
dense populations of Corbicula may ingest large numbers of unionid sperm, glochidia and newly metamorphosed individuals
|
North America
|
13063
|
|
5464
|
Corbicula fluminea
|
Predation/Herbivory
|
Observational
|
Field
|
Corbicula removed 30% of the phytoplankton chlorophyll in 2 hours
|
Maryland, Potomac River
|
13212
|
|
5465
|
Corbicula fluminea
|
Predation/Herbivory
|
Observational
|
Field
|
Corbicula invasion was followed successively by a tripling of water clarity, resurgence of submerged aquatic vegetation, increased fish populations, and increased bird populations.
|
Potomac River Estuary
|
23988
|
|
5485
|
Corbicula fluminea
|
Predation/Herbivory
|
Observational
|
Field
|
increased observation of ducks in the mudflats, speculation they were eating Corbicula
|
Tennessee
|
12216
|
|
5486
|
Corbicula fluminea
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
sturgeon are documented to consume Corbicula
|
|
12216
|
|
5487
|
Corbicula fluminea
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Notes that flatworms, including Dugesia tigrina, are known to consume young clams and were observed in large population in Kentucky Lake associated with Corbicula.
|
Kentucky Lake
|
12216
|
|
5488
|
Corbicula fluminea
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Sheeshead drum (Aplodinotus grunniens) may benefit from consumption of Corbicula
|
Kentucky Lake
|
12216
|
|
5489
|
Corbicula fluminea
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Common Map turtle and muskrat are noted as predators on clams that may be impacted (positive or negatively unknown) by Corbicula
|
Kentucky Lake
|
12216
|
|
7378
|
Corbicula fluminea
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Corbicula fluminea can deplete algal abundance in large water bodies, negatively impacting native species.
|
|
42291
|
|
7379
|
Corbicula fluminea
|
Predation/Herbivory
|
Observational
|
Field
|
In the Meuse River in northwest Europe,
the filter feeding of Corbicula fluminea caused a 70% decrease in phytoplankton abundance, thereby impacting the entire food web.
|
Meuse River, NW Europe
|
42291
|
|
9536
|
Corbicula fluminea
|
Predation/Herbivory
|
Observational
|
Field
|
In San Francisco Baby, Acipenser transmontanus have been recorded to prey upon Corbicula fluminea.
|
San Francisco Bay, California, USA
|
43005
|
|
9677
|
Corbicula fluminea
|
Predation/Herbivory
|
Observational
|
Field
|
Dense aggregates of Corbicula fluminea can reduce suspended particles from the water through filter feeding which can promote aquatic plant growth and restructure benthic and/or pelagic communities.
|
|
32411
|