Potential Abiotic and Biotic Impacts of Zebra Mussels on the Inland Waters of North America

SYNOPSIS. The expansion of zebra mussel distribution into inland waterways of North America portends significant abiotic and biotic changes mediated either directly or indirectly by Dreissena. Dreissena fouls a wide array of submerged substrates including rock surfaces, macrophytes, native molluscs,...

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Bibliographic Details
Published in:American zoologist 1996-06, Vol.36 (3), p.287-299
Main Author: MacIsaac, Hugh J.
Format: Article
Language:English
Subjects:
Animal populations
Biology
Dreissena polymorpha
Ecological invasion
Fouling
Freshwater
Freshwater fishes
Lakes
Lentic systems
Limnology
Macrophytes
Mollusks
Mussels
Rivers
The Biology, Ecology, and Physiology of Zebra Mussels
Water quality
Zooplankton
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Summary:SYNOPSIS. The expansion of zebra mussel distribution into inland waterways of North America portends significant abiotic and biotic changes mediated either directly or indirectly by Dreissena. Dreissena fouls a wide array of submerged substrates including rock surfaces, macrophytes, native molluscs, canal and dock walls, and watercraft and motor outdrives. Fouling of water intake pipes and associated installations can severely impair water delivery to hydroelectric, municipal and industrial users, necessitating proactive or reactive control measures. Mussels increase water clarity by removing suspended clay, silt, bacteria, phytoplankton, and small zooplankton. Clear water phases associated with Dreissena grazing may exceed in magnitude and duration those generated by zooplankton grazing. Enhanced water clarity increases light transmittance and growth of benthic plants. Some benthic invertebrates {e.g., unionid molluscs) are adversely affected by Dreissena, whereas others, including amphipod crustaceans, exploit structure associated with or wastes generated by zebra mussels. Dreissena is exploited by a host of predators, most notably waterfowl, fish and crayfish. Waterfowl predators that consume contaminated Dreissena have elevated concentrations of organic pesticides and polychlorinated biphenyl compounds. Invasion of shallow lakes and ponds by Dreissena may divert production and biomass from pelagic to benthic foodwebs, shifting ecosystems to an alternative state.
ISSN:1540-7063
0003-1569
1557-7023
2162-4445
DOI:10.1093/icb/36.3.287