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The effect of the Asiatic clam, Corbicula fluminea, on phytoplankton of the Potomac River, Maryland
Abstract
In the summers of the 1960s and 1970s, phytoplankton in the fresh, tidal Potomac River showed a downstream gradient of low to high abundance. Phytoplankton abundance in a 6–8‐km segment of the river, in summer 1980 and 1981, was 40–60% below that upstream and downstream, forming a “sag.” In 1980, the highest densities of the Asiatic clam Corbicula fluminea were in the same reach as the phytoplankton sag. Filtration rates indicate that the volume of the sag reach could be pumped through the Corbicula population in 3–4 days. Corbicula removed 30% of the phytoplankton chlorophyll a from a river water sample in 2 h. Pheophytin a in surficial sediments correlated well with clam biomass as a consequence of phytoplankton excreted in pseudofeces. The hypotheses that peak discharges, zooplankton, toxic substances, and nutrient limitation induced the sag were not supported.
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Cited by
Eutrophication of Chesapeake Bay: historical trends and ecological interactions.
Kemp, W., Boynton, W., Adolf, J., Boesch, D., Boicourt, W., Brush, G., Cornwell, J., Fisher, T., Glibert, P., Hagy, J., et al. (2005) · Marine Ecology Progress Series · doi:10.3354/meps303001 · Cited by 1,468
The Role of Macroinvertebrates in Stream Ecosystem Function
Wallace, J. B., & Webster, J. R. (1996) · Annual Review of Entomology · doi:10.1146/annurev.en.41.010196.000555 · Cited by 1,163
Coen, L. D., & Luckenbach, M. W. (2000) · Ecological Engineering · doi:10.1016/s0925-8574(00)00084-7 · Cited by 276
Influence of Eastern Oysters on Nitrogen and Phosphorus Regeneration in Chesapeake Bay, USA
Newell, R. I. E., Fisher, T. R., Holyoke, R. R., & Cornwell, J. C. (2005) · NATO Science Series IV: Earth and Environmental Series · doi:10.1007/1-4020-3030-4_6 · Cited by 270
Matthews, D. A., Effler, S. W., Matthews, C. M. B., Siegfried, C. A., & Spada, M. E. (2001) · Water Environment Research · doi:10.2175/106143001x143439 · Cited by 40
Metadata
- Authors
- Cohen, R. R. H., Dresler, P. V., Phillips, E. J. P., & Cory, R. L.
- Venue
- Limnology and Oceanography
- Publisher
- Wiley
- Published
- 1984-01
- Volume
- 29
- Issue
- 1
- Pages
- 170-180
- ISSN
- 0024-3590 (ISSN-L)
- 1939-5590
- OpenAlex
- W2124664025
- Cited by
- 246
- References
- 0
- FWCI
- 4.75
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: The effect of the Asiatic clam, Corbicula fluminea, on phytoplankton of the Potomac River, Maryland. https://app.cochat.ai/papers/10.4319/lo.1984.29.1.0170
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- Cohen, R. R. H., Dresler, P. V., Phillips, E. J. P., & Cory, R. L. (1984). The effect of the Asiatic clam, Corbicula fluminea, on phytoplankton of the Potomac River, Maryland. Limnology and Oceanography. https://doi.org/10.4319/lo.1984.29.1.0170
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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