The introduction of Common Carp into North American waters has led to widespread alteration of aquatic ecosystems. Researchers developed a population dynamics model (CarpMOD) to explore control measures that eradicate carp at multiple life stages (embryos, juveniles, and adults).
The study occurred in Malheur Lake in Southeast Oregon where managers have been trying to control carp invasions for 65 years. Simulated control measures included commercial harvest of adults, trapping of juveniles, embryo electroshocking, and increasing avian predation. Cumulative carp mortality resulting from combinations of two or more active removal methods could reduce biomass below the desired threshold needed to achieve system recovery. CarpMOD simulations suggest 40 percent of carp need to be removed at each life-stage, which may be unrealistic to maintain. Simulation models such as CarpMOD provide a structured approach for informing invasive species management efforts prior to implementing expensive and uncertain control measures.
Pearson, J.B., Dunham, J.B., Bellmore, J.R., Lyons, D.E., 2019, Modeling control of common carp (Cyprinus carpio) in a shallow desert lake: Wetlands Ecology and Management, https://doi.org/10.1007/s11273-019-09685-0
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Aquatic & Landscape Ecology Research Team (FRESC)
Threat of Invasives to Native Species and Ecosystems
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Aquatic & Landscape Ecology Research Team (FRESC)
Fresh waters are one of the most valuable and threatened resources worldwide. They supply critical services to society and harbor many of the world’s most imperiled species. We conduct research and provide technical assistance to address challenges to fresh waters. Our research focuses on ecological processes in freshwater and terrestrial systems and the effects of those processes on landscape...Threat of Invasives to Native Species and Ecosystems
Invasive species are a growing threat to native species and ecosystem processes in fresh waters. The Introducing non-native fish into an area may have no effect, little current effect, or the potential to seriously impact the native species, possibly resulting in their extinction. We conduct research to address the causes of invasions and their impacts. We also provide technical support for... - Publications
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