Mathematician develops model to control spread of aquatic invasive species

Mathematician develops model to control spread of aquatic invasive species

Credit: University of Tennessee

Adjusting the water flow rate in a river can prevent invasive species from moving upstream and expanding their range. An applied mathematician at UT has developed a partial differential equation model to find the desired flow rate to reduce invasive populations.

The model is detailed in a new paper by Suzanne Lenhart, Chancellor’s Professor and James R. Cox Professor of Mathematics, published in Mathematics.

"Invasives

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Salt-Water Fish Extinction Seen By 2048

Salt-Water Fish Extinction Seen By 2048

The apocalypse has a new date: 2048.

That’s when the world’s oceans will be empty of fish, predicts an international team of ecologists and economists. The cause: the disappearance of species due to overfishing, pollution, habitat loss, and climate change.

The study by Boris Worm, PhD, of Dalhousie University in Halifax, Nova Scotia, — with colleagues in the U.K., U.S., Sweden, and Panama — was an effort to understand what … [more…]

Trump plan to allow new fracking on California coast, Central Valley moves forward

photo: oil and gas exploitation on public lands in California.

Photo: Hydraulic fracturing is currently used on between 10 to 20 percent of all oil and gas wells on public lands in Central California managed by the Bureau of Land Management Bakersfield Field Office. COURTESY OF BLM, BAKERSFIELD FIELD OFFICE.

The Trump administration moved forward Thursday with its plan to open up federal land in California’s Central Valley and Central Coast to more oil and gas drilling, including fracking.

The … [more…]

How one Wisconsin farm pursues land and water conservation

photo: the Brey family farm. How one Wisconsin farm pursues land and water conservation

Do you know the purpose, cause, or belief that drives you?

Author Simon Sinek calls this “finding your why.”

On my family’s dairy farm in Door County, Wisconsin, our why is, “To learn and adapt so that all may have a quality life.”

Every day, we face new challenges on Brey Cycle Farm. Although it has been in our family since 1904, the farm has changed to adapt to the … [more…]

Dirtiest week for water in EPA history

Photo: Dirtiest week for water in EPA history

Photo: © Getty Images

Before the Clean Water Act was passed in 1972, our nation’s waters were in trouble. Lake Erie was virtually dead, the Cuyahoga River caught on fire, and the Androscoggin River in Maine was so polluted it peeled paint on nearby buildings. Many of America’s waters had become little more than lifeless, open sewers.

Nobody wants to return to the bad old days of polluted, dirty rivers. … [more…]