Deadly Algae Are Everywhere, Thanks to Agriculture

[theHandpuppet]

http://www.scientificamerican.com/article/deadly-algae-are-everywhere-thanks-to-agriculture/
Scientific American
Deadly Algae Are Everywhere, Thanks to Agriculture
Get used to algae blooms, they may be coming to a body of water near you
Aug 8, 2014 |By David Biello

The rains come and water the spring shoots of another bounteous Midwestern corn crop in Ohio, Indiana and Michigan. The rains also wash phosphorus off farm fields and into creeks, streams and rivers. The waters flow into the shallowest of the Great Lakes—Lake Erie, which is just 18 meters deep on average and far shallower on its western edge. All that phosphorus doesn't just help crops grow. When it reaches the lake it fuels the growth of mats of bright green algae, turning the water the color of pea soup. Such Microcystis cyanobacteria bear poisons, at least 80 different varieties of a toxin dubbed microcystin. And when the shallow waters deliver an algal bloom down to the right water intake pipes, an entire city like Toledo is left without water.

"Most water treatment plants are watching for the toxin," says Don Scavia, environmental engineer, director of the Graham Environmental Sustainability Institute at the University of Michigan and an expert on such harmful algal blooms. "The options when it occurs are to treat it—very expensive—or to shut down."

Such dangerous blooms are becoming more common, affecting all 50 states, according to the U.S. Environmental Protection Agency. Just last year a township near Toledo had to shut down its water supply due to a similar bloom. And such blooms are not confined to freshwater. Offshore, similar algal blooms create dead zones; microbes consuming dead algae use up all the available oxygen in the water, killing slow-moving and sessile sea life. Such dead zones are on the rise not just on the U.S. seaboards and interior waters but worldwide. The annual ocean dead zone at the mouth of the Mississippi River covered an area roughly the size of Connecticut this year, after reaching Massachusetts-proportions in 2013. Freshwater blooms like the one that shut down Toledo's drinking water cost the U.S. hundreds of millions of dollars each year, and also occur in countries such as Brazil and China.

Warmer summertime temperatures, more powerful rainstorms and longer growing seasons—all conditions expected to strengthen as climate change continues—will only make conditions even more hospitable for such cyanobacteria, some of the oldest life on Earth. The algae have been blooming earlier and lingering later in recent years. And ecosystem changes in Lake Erie may be contributing to the problem. "The zebra and quagga mussels in Lake Erie might also be important because they do not eat the Microcystis species, favoring their growth over others," Scavia notes.... MORE at link provided above.

[mopinko]

1. heard a story on the radio about removing phosphorous here in cook co.

Last edited Sat Aug 9, 2014, 10:53 PM - Edit history (1)

there are apparently new regs coming on line for the municipal waste water in the mississippi water shed. there is a law suit being filed against the new process as being inadequate, but at least SOME upgrades are coming on line.

the thing that makes me nuts here is the value of these "pollutants". stop fence row to fence row planting. grow some weeds. lay some old trees along the edge of the ditches. build some soil. trap the soil that is running off, too.
i mean, what kind of farming is this?
it is a conceit to call myself a farmer with my 1/2 acre in the city. but shit, even i know your first priority is your soil. and these clowns just flush it down the river. while i piss off half the neighborhood, and the city, with my terraforming.

just fucking crazy.

[daleanime]

2. +1

[dbackjon]

5. On our farm in northern Illinois

We have never channelized the creek that flows for the property

There is still a grassy buffer between the fields and the creek. Once it leaves our land it's channelized and they grow crops right to the edge of it

[Hestia]

3. What's crazy too on top of this is there is a shortage of phosphorus - you'd think there

would be some way to capture it on the front end instead of letting it wash downstream. The easiest to recycle is from urine.

In the Middle Ages, there were people would pick urine from people's doorsteps in the mornings for the tanning and wool industries. They needed the urine to break down fats, etc. Saw it on a "Worst Jobs in History" episode.

http://www.foreignpolicy.com/articles/2010/04/20/peak_phosphorus

http://www.forbes.com/sites/timworstall/2013/06/27/there-is-no-phosphorus-shortage-stop-designing-damn-fool-systems-to-recycle-it/

The original article is silly but the comments are worth reading - mining and resources in the future. Interesting.

[albino65]

4. Ohio is doing its part

Ohio Atty General Mike DeWine Opposes Rules To Protect Lake Erie From Algae Blooms

http://www.plunderbund.com/2014/08/07/mike-dewine-opposes-rules-to-protect-lake-erie-from-algae-blooms/

[gejohnston]

6. Many of Florida's natural springs

including places like Silver Springs have all been destroyed by algae over populated thanks to artificial fertilizers used on golf courses, laws, etc.