Assessing and addressing the re-eutrophication of Lake Erie: Central basin hypoxia
| Autor: | Nate S. Bosch, Hongyan Zhang, Edward S. Rutherford, Stephen B. Brandt, Stuart A. Ludsin, J. David Allan, Yuntao Zhou, Steven M. Bartell, Tomas O. Höök, Haejin Han, David J. Schwab, Dmitry Beletsky, Ruth D. Briland, Joseph V. DePinto, Timothy M. Sesterhenn, David M. Dolan, Daisuke Goto, Mary Anne Evans, Donald Scavia, Irem Daloğlu, Roger L. Knight, Doran M. Mason, James J. Roberts, Kristin K. Arend, R. Peter Richards, Troy M. Farmer, Daniel K. Rucinski, Anna M. Michalak |
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| Jazyk: | angličtina |
| Předmět: |
Ecology
fungi Hypoxia (environmental) Aquatic Science Structural basin 6. Clean water Predation Phytoplankton biomass Fishery Habitat 13. Climate action Environmental science Phosphorus load targets 14. Life underwater Water quality Hypolimnion Eutrophication Hypoxia Best management practices Ecology Evolution Behavior and Systematics Lake Erie |
| Zdroj: | Journal of Great Lakes Research. (2):226-246 |
| ISSN: | 0380-1330 |
| DOI: | 10.1016/j.jglr.2014.02.004 |
| Popis: | Relieving phosphorus loading is a key management tool for controlling Lake Erie eutrophication. During the 1960s and 1970s, increased phosphorus inputs degraded water quality and reduced central basin hypolimnetic oxygen levels which, in turn, eliminated thermal habitat vital to cold-water organisms and contributed to the extirpation of important benthic macroinvertebrate prey species for fishes. In response to load reductions initiated in 1972, Lake Erie responded quickly with reduced water-column phosphorus concentrations, phytoplankton biomass, and bottom-water hypoxia (dissolved oxygen 2) requires cutting total phosphorus loads by 46% from the 2003–2011 average or reducing dissolved reactive phosphorus loads by 78% from the 2005–2011 average. Reductions to these levels are also protective of fish habitat. We provide potential approaches for achieving those new loading targets, and suggest that recent load reduction recommendations focused on western basin cyanobacteria blooms may not be sufficient to reduce central basin hypoxia to 2000 km2. |
| Databáze: | OpenAIRE |
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