LAKE ERIE CASE STUDY EUTROPHICATION AND DEAD ZONES

Climate models predict that in the Great Lakes region, extreme events such as powerful thunderstorms and droughts will happen more often, but the total amount of precipitation will stay about the same. A series of intense spring storms in , for example, drove a record algal bloom in the lake that summer. Conservation tillage and no-till practices, for example, help farmers reduce soil erosion and keep organic material in the soil. There are also invasive species that factor into the causes of algae blooms in Lake Erie. The new studies, part of the Ecological Forecasting EcoFore Lake Erie project led by researchers at the University of Michigan, found that the current targets to reduce phosphorus to alleviate algal blooms in Lake Erie may not be low enough to revive the dead zone.

We need to be looking for practices that contribute to overall environmental health, and benefit both the farmers and the lake. Despite the differences, both of Lake Erie’s environmental problems are ultimately caused by agricultural runoff and human activity, which result in too much phosphorous entering the lake, said study co-author Anna Michalak, an earth scientist at the Carnegie Institution of Science at Stanford University in California. Changes in agricultural practices include: Hypoxic water supports fewer organisms and has been linked to massive fish kills in the Black Sea and Gulf of Mexico. Lake Erie, however, saw a reemergence of the algal blooms and the growth of the dead zone in the mids, and the problems are worsening. The lack of oxygen is called anoxia.

Lake Erie Dead Zone: Don’t Blame the Slime!

Lake Erie’s ecological calamities occur under different conditions, a new study finds. Climate models predict that in the Great Lakes region, extreme events such as powerful thunderstorms and droughts will happen more often, but the total amount of precipitation will stay about the same.

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lake erie case study eutrophication and dead zones

Nutrient overloading and algal blooms lead to eutrophication link to USGS definitionwhich has been shown to reduce benthic link to definition biomass and biodiversity. A series of intense spring storms infor example, drove a record algal bloom in the lake that summer.

Cause of Lake Erie’s Harmful Algal Blooms Gains More Certainty – Circle of Blue

Weak wind patterns and reduced lake circulation in allowed the large amounts caze phosphorus washed into the lake by spring storms to sit in the western basin for longer than normal, leaving huge amounts available to feed algae once warm summer temperatures arrived. Navigation What is this stuff?

You need to look at them as a coupled set. Last fall a toxic algal bloom in the lake forced officials to shut off a public water supply system in Ohio. To examine why dead zones develop in Lake Erie, lead study author Yuntao Zhou looked at historical weather records, data on lake and river conditions and other factors.

Hence, lxke on one river may improve algae conditions, but not the dead zone. The record-low river flow into Lake Erie created a record-size dead zone in the lake’s central basin.

lake erie case study eutrophication and dead zones

Upwelling oxygen-rich water or destruction of the stratification can alleviate this problem. Diagram courtesy of the U.

Lake Erie Dead Zone: Don’t Blame the Slime!

Conservation tillage and no-till practices, for example, help farmers reduce soil erosion and keep organic material in the soil. A dead zone can also form when the lake water is stratified by temperature, with warm water on top of cold water. North America’s ‘Third Coast’ ]. Becky Oskin, Contributing Writer Becky Oskin covers Earth science, climate change and space, as well as general science topics.

Becky Oskin, Contributing Writer on. Beginning inthe NOAA uses tools that can measure the amount of phosphorus in Lake Erie and that can help prevent algal blooms eutrophicatioon the future.

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Low water inflow from rivers A high influx of phosphorous between May and July Strong northwesterly winds in June, which push nutrient runoff from the western part of Lake Erie into the lake’s central basin July wind speeds, which affect water eutorphication.

There are also invasive species that factor into the causes of algae blooms in Lake Erie. She earned a master’s degree in geology from Caltech, a bachelor’s degree from Washington State University, and a graduate certificate in science writing from the University of California, Santa Cruz. Dead zones can be found worldwide link to NASA dead zone page.

Watching World Droughts and Food Stocks. Not All Phosphorous is the Same. Follow Becky Oskin beckyoskin. Also, birds are increasingly dying from a disease called avian botulism, which is caused by bacteria in environments of warm weather and high nutrients, andd an algal bloom USGS Na tional Wildlife Health Center, Donate to Circle of Blue. We need to be looking for reie that contribute to overall environmental health, and benefit both the farmers and the lake.

Lake Erie, however, saw a reemergence of the algal blooms and the growth of the dead zone oznes the mids, and eutrophicaation problems are worsening. Strong winds stir up the lake. Feel free to contribute!

It is also affected by weather events such as flooding and hurricanes. A news correspondent for Circle of Blue based out of Hawaii. Heavy rainstorms and droughts could both have effects on Lake Erie water quality.

Dead zones may also be found in lakes, such as Lake Erie.