2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2018 | 2:45 PM - 3:00 PM | DIRECT AND INDIRECT IMPACTS OF MASS MORTALITY EVENTS OF INVASIVE BIVALVES | 321
DIRECT AND INDIRECT IMPACTS OF MASS MORTALITY EVENTS OF INVASIVE BIVALVES
Invasive bivalves such as the Asian clam Corbicula fluminea, the zebra mussel Dreissena polymorpha, and the Chinese pond mussel Sinanodonta woodiana can play dominant roles in aquatic ecosystems due to their ability to reach high densities and biomass. Here, we review the immediate and longer term impacts of mass mortality events of invasive bivalves through a variety of mechanisms, including drought, flooding, and high and low temperatures, and compare these impacts in aquatic and riparian habitats. Mass mortality events can lead to short term impacts, such as large pulses of nitrogen and phosphorus becoming available, but also can have consequences for both aquatic and terrestrial communities (from bacteria to vertebrates). These invasive species can best be described as R-selected species, they may be prone to boom and bust population dynamics due to their ability to be resilient, but not resistant to the extremes conditions that cause these mortality events. As such, these mass mortality events could become a more common occurrence in aquatic ecosystems, particularly in the face of the increased spread of these invasive bivalves and higher predicted variability due to global climate change.
- Invasive
- Decomposition
- Pulse
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Presenters/Authors
William G. McDowell
(), Merrimack College, wgmcdowell@gmail.com;
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Ronaldo Sousa
(), University of Minho, Portugal, rg.eco.sousa@gmail.com;
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