Wanda DeWaard has spent 30 years studying and tagging monarch butterflies. Here she leads a volunteer group of citizen scientists tagging monarchs in Cades Cove.  Photos courtesy of Wanda DeWaard

Successful Smokies monarch tagging project is a product of the people

Every winter, way up in the oyumel firs in Mexico’s high elevation forests, millions of North American monarch butterflies that have traveled from as far north as Canada cluster in colonies to overwinter before flying north again to lay eggs in spring. Tens of thousands of monarchs might adorn a single tree like a papery gown, sometimes weighing it down enough to break off branches.

To get to the oyumel forests several miles above sea level, which provide a perfect microclimate for the weary travelers, they migrate south using different aerial paths, or flyways, that merge together over Central Texas. This migrating generation can live up to nine months and might travel anywhere from 1,000-3,000 miles to the forests they seek, yet have never been to. Mysteriously, they find their way and sometimes even make it to the exact tree where their ancestors four or five generations back once clustered. 

Monarchs are the only butterfly that makes a long two-way migration. Despite much research on the species, science still hasn’t fully unraveled the secrets of their incredibly accurate homing system. This makes them one of the true marvels of the natural world.

A tagged monarch feeds on nectar in the Great Smokies before joining the migration to Mexico for the winter.

KNOXVILLE — You’re invited to join a Southern Alliance for Clean Energy webinar, “Understanding EVs: Real People Share Real Stories of Electrifying Their Ride,” at 11:30 a.m. Thursday, Aug. 29. 

A panel of electric vehicle (EV) owners and drivers will share stories and insights from their experiences with EVs. Learn more about what it’s like to own, charge, travel and save money with an EV, plus hear advice from real people who have gone electric! Panelists for this webinar will include: 

• EVNoire Associate Director Tarique André Miller, on EV charging levels and networks, best practices on charging, maintenance cost savings, plus EV incentives and opportunities for all

• SACE Electric Transportation Equity Manager Madelyn Collins and East Tennessee Clean Fuels Community Engagement Liaison Wesleigh Wright, on what they learned about EV range and community charging during their first ever EV road trip

• SACE volunteer Sara Vinson, on purchasing an EV, using federal tax credits to save money on an EV, and benefiting from the low maintenance of EVs (including her vow to never get an oil change again!)

Tennessee Aquarium VP and Chief Conservation and Education Officer Dr. Anna George, right, and U.S. Fish and Wildlife Service Conservation Delivery Coordinator Geoff Call collect critically endangered laurel dace from a stream ravaged by a prolonged drought on the Cumberland Plateau. The rescue successfully relocated 105 adults into human care at the Tennessee Aquarium Conservation Institute’s headquarters near downtown Chattanooga.  Photos by Doug Strickland/Tennessee Aquarium

Drought prompts emergency rescue of one of America’s most endangered aquatic species

Casey Phillips is a writer for the Tennessee Aquarium.

CHATTANOOGA — Few things trigger louder or more distressing alarm bells among freshwater biologists than watching a waterway dry up during a severe, prolonged drought. That’s especially true when the disappearing stream is home to one of America’s most imperiled fish.

In late July, reports of dramatically withered streams atop Walden Ridge north of Chattanooga spurred an emergency rescue operation to prevent the extinction of the federally endangered laurel dace, which scientists consider to be among the 10 most at-risk fish in North America.

This effort was carried out by representatives from the Tennessee Aquarium, the U.S. Fish and Wildlife Service, and the University of Georgia’s River Basin Center in coordination with the Tennessee Wildlife Resources Agency. In all, 105 adult laurel dace were removed from dangerously dry streams and successfully relocated to the Tennessee Aquarium Conservation Institute (TNACI) near downtown Chattanooga.

All but one of the collected fish survived the relocation and are now thriving in temporary human care, where they will remain until conditions in their few native streams are sufficiently improved for them to be returned safely.

This laurel dace (Chrosomus saylori) was among dozens other collected from a stream on Walden Ridge north of Chattanooga to save the fish from drought. In the last 12 years, this minnow’s range has drastically dwindled to just two streams, and scientists consider it one of North America’s 10 most imperiled fish species.

Invasive carp jumping from the water at Barkley Dam in Kentucky. One option for eliminating carp is to eat them, and you can do just that on Saturday in Knoxville.  Kentucky Department of Fish and Wildlife Resources

Learn about invasive species such as carp and zebra mussels at Conservation Fisheries panel

KNOXVILLE —To hear Bo Baxter tell it, carp actually doesn’t taste half bad.

He fairly gorged on the bottom feeders once long ago, during a long Mississippi River trip with the famed aquatic biologist David Etnier.

He prefers silver carp to, say, bighead carp, but the meat is fairly light and flaky on both and “I consider it excellent,” Baxter said. (Baxter serves on the editorial board of Hellbender Press).

Regardless their culinary appeal, the fish don’t belong anywhere near here, and will be among several different invasive species set to be the subject of a forum beginning at 6 p.m. Saturday, Aug. 23 at Remedy Coffee, 800 Tyson St., Knoxville.

And while you learn, you can enjoy a $5 carp po’boy and hushpuppies plate courtesy of the Tennessee Wildlife Resources Agency (TWRA), which is working to both limit the spread and establish a robust commercial market for the fish. Payson will provide the bread and remoulade.

A protestor holds a sign during a 2021 demonstration against TVA’s plans for continued fossil fuel use outside the federal utility’s headquarters in Knoxville.  Thomas Fraser/Hellbender Press

KNOXVILLE — On Thursday, August 22, the Tennessee Valley Authority’s (TVA) Board of Directors will meet in Florence, Alabama to authorize a 5.25 percent electric power rate increase without any public documentation showing why the increase is needed or how those additional revenues will be spent. This rate increase amounts to approximately a staggering half-a-billion-dollar increase for Tennessee Valley ratepayers. Only in the Tennessee Valley could a major utility raise rates without public scrutiny of financial documents.

The 5.25 percent rate increase coupled with last year’s 4.5 percent electric rate increase is strategically set just below a 10 percent threshold that would trigger renegotiation of hundreds of power supply agreements with local utilities. But even with this rate increase, TVA is still racking up debt at a rate not seen in decades.

Based on documents over a year old at this point, we can only guess what is driving TVA’s current financial woes: the largest buildout of fossil gas in the country this decade. These new fossil gas pipelines and power plants aren’t cheap, and TVA’s plan to increase reliance on gas is risky. Families and businesses across the Valley will see increased bills when gas prices rise again and as these new gas power plants become obsolete in just a few short years.