Biomonitoring using invasive species in a large Lake: Dreissena distribution maps hypoxic zones

Alexander Y. Karatayev; Lyubov E. Burlakova; Knut Mehler; Serghei A. Bocaniov; Paris D. Collingsworth; Glenn Warren; Richard T. Kraus; Elizabeth K. Hinchey

doi:10.1016/j.jglr.2017.08.001

USGS · 70192188

Biomonitoring using invasive species in a large Lake: Dreissena distribution maps hypoxic zones

Alexander Y. Karatayev·Lyubov E. Burlakova·Knut Mehler·Serghei A. Bocaniov·Paris D. Collingsworth·Glenn Warren·Richard T. Kraus·Elizabeth K. Hinchey

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Abstract

Due to cultural eutrophication and global climate change, an exponential increase in the number and extent of hypoxic zones in marine and freshwater ecosystems has been observed in the last few decades. Hypoxia, or low dissolved oxygen (DO) concentrations, can produce strong negative ecological impacts and, therefore, is a management concern. We measured biomass and densities of Dreissena in Lake Erie, as well as bottom DO in 2014 using 19 high frequency data loggers distributed throughout the central basin to validate a three-dimensional hydrodynamic-ecological lake model. We found that a deep, offshore hypoxic zone was formed by early August, restricting the Dreissena population to shallow areas of the central basin. Deeper than 20 m, where bottom hypoxia routinely develops, only young of the year mussels were found in small numbers, indicating restricted recruitment and survival of young Dreissena . We suggest that monitoring Dreissena distribution can be an effective tool for mapping the extent and frequency of hypoxia in freshwater. In addition, our results suggest that an anticipated decrease in the spatial extent of hypoxia resulting from nutrient management has the potential to increase the spatial extent of profundal habitat in the central basin available for Dreissena expansion.

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Journal of Great Lakes Research Article

Source-reported bounding extent: 41.372686481864655° to 42.90413649491736° latitude; -83.5400390625° to -78.8104248046875° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Alexander Y. Karatayev, Lyubov E. Burlakova, Knut Mehler, Serghei A. Bocaniov, Paris D. Collingsworth, Glenn Warren, Richard T. Kraus, Elizabeth K. Hinchey. 2018. Biomonitoring using invasive species in a large Lake: Dreissena distribution maps hypoxic zones. https://doi.org/10.1016/j.jglr.2017.08.001

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