Watercress darter

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Watercress darters

The watercress darter (Etheostoma nuchale) is a small, reddish perciform fish with colorful fins which lives in the Black Warrior River drainage basin near Birmingham. To date it has only been found in a few locations in streams in Powderly, Roebuck Spring, and Thomas Spring and Glenn Springs in Bessemer, plus a reserve population planted in Pinson. Originally these populations would have been connected, but today the waterways that link them are either too polluted or altered for the populations to mingle.

The species is named for its preferred habitat in the "watercress zone" of springs. It feeds on snails, crustaceans and insect larvae. The largest known female was 2.5 inches in length, but the fish are generally 1 to 1.8 inches long. Green sunfish, bluegills, and sculpins are known to prey on watercress darters.

The species is endangered and is protected by Federal and state laws. Protected habitats such as the Watercress Darter National Wildlife Refuge and Seven Springs Ecoscape help to conserve the species. In 2023, Howell published History of Birmingham’s Endangered Watercress Darter.

History

The watercress darter was discovered in 1964 by Mike Howell and R. D. Caldwell in Glenn Springs, a tributary of Halls Creek, in Bessemer. Another population was not found until 1976, when a second was found in Thomas Spring, another tributary of Halls Creek in Bessemer. In 1980, Watercress Darter National Wildlife Refuge was established around Thomas Spring exclusively to protect the rare fish.

In the 1980s the fish was also discovered in the small stream that runs in front of the Hawkins Recreation Center, and in a small pond just south of the Alabama Department of Youth Services Vacca Campus. Darters have also been found in the stream below the dam as it winds through the Roebuck Municipal Golf Course and flows into Village Creek. As a result, the Birmingham Park and Recreation Board agreed to stop using pesticides near the edge of the stream, which increased its fish population, including the watercress darter.

In 1986 a reserve population of darters was planted at Penny Springs in Pinson by Howell, leading a "recovery team" sponsored by the U.S. Fish and Wildlife Service.

In the early 2000s, the fish was also found in a spring that flows in front of Faith Apostolic Church in Powderly by Samford University professors Mike Howell and Larry Davenport. Seven Springs EcoScape, a park designed to protect the darter, opened adjacent to the church on April 13, 2008. Additional property along Nabors Branch has been dedicated as wildlife preserves by the Seven Springs Watercress Darter Coalition and by a conservation easement negotiated with Freshwater Land Trust by property owner Emily Godsey.

Roebuck fish kill

In September 2008 the earthen dam at Roebuck-Hawkins Park was demolished by Birmingham Department of Public Works crews. An estimated 11,760 individual fish were killed, in part because their instinct when surprised by moving water is to seek shelter in the grasses at the pond's edge rather than to swim with the current. Federal and state wildlife officials collected specimens, developed a pond restoration plan, and began an investigation which may have led to criminal charges. Mayor Larry Langford requested that Balch & Bingham represent the city in defending itself against possible action.

Under the restoration plan another temporary sandbag dam was built, bringing the pond depth back to about 12 inches. An aerator was used to restore oxygen levels and teams of biologists and volunteers frequently monitored water quality and observed any signs of changes in the fish population. A non-native crayfish population that had been preying on the fish was also eradicated. The temporary dam was later replaced with a tamper-proof dam specially designed for the pond. By June 2009 scientists from the University of Alabama found about half as many individual fish in the pond as in previous years.

On June 24, 2010, The U.S. Fish and Wildlife Service issued a fine of $2,975,000 against the city. The Service said the city was initially helpful in restoring the habitat, but has not responded to further measures needed to protect the fish. In January 2012, it was reported that a settlement had been proposed in which the federal government would drop the fine if Birmingham donated $182,000 to the Freshwater Land Trust and continue its efforts to protect the pond's fragile ecosystem.

Watercress Darter Festival

On April 10, 2011, the Freshwater Land Trust and Southern Environmental Center hosted the first Watercress Darter Festival at Railroad Park to help raise awareness of the fish. The event featured watercress darter kites for sale, performance art, and food from George’s Boxcar Café. Proceeds went to the Southern Environmental Center's Community Ecoscapes program.

Watercress darter (Etheostoma nuchale)
Habitats Glenn Springs · Nabors Branch · Roebuck Spring · Tapawingo Springs · Thomas Spring · Turkey Creek
Preserves Seven Springs Ecoscape · Turkey Creek Nature Preserve · Watercress Darter National Wildlife Refuge
People R. D. Caldwell (co-discoverer) · Larry Davenport · Mike Howell (co-discoverer) · Heron Johnson

References

External links