Home News Welcome home: Bison in Oklahoma and anteaters in Argentina

Welcome home: Bison in Oklahoma and anteaters in Argentina

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Success in bringing back populations of one species can also spawn attempts to boost others, using similar methods. Also on the environment, batteries are being recycled into fertilizer. And in human rights news, Latvia pays compensation to communities for the Holocaust, and Kuwait overturns an anti-transgender law.  

1. Argentina

Two giant anteaters paved the way for other successful reintroduction programs in Argentina’s Iberá Wetlands. Scientists weren’t sure what to expect when they released a pair of giant anteaters – affectionately named Ivotí Pora and Preto – into the wilderness of the Rincón del Socorro reserve in 2007. Hunting and agriculture had eradicated the species in the wild decades earlier. This pair not only survived, but also had seven cubs. “They were fighters,” says veterinarian Gustavo Solís from the Rewilding Foundation, which runs a rescue center for anteaters. Since then, the foundation has rescued over 120 anteaters and released 93 across four sites, with help from provincial governments, national parks, zoos, and universities.

Why We Wrote This

At face value, species reintroductions mean preservation of unique life. But in one case in our progress roundup, animals were also key to a comeback of the ecosystem itself.

When young anteaters are rescued and brought to the center, they’re bottle-fed until they can switch to a normal diet of worms and termites. The animals must meet certain requirements before they can leave the facility, such as weight, self-reliance in feeding and shelter, and the ability to use their tail for self-protection. They then spend a month in a pre-release pen that mimics the wild environment, where they are fitted with monitoring devices. Conservationists have organized educational events to help locals better understand the species that went extinct in the 1960s. Using this model, the foundation has also reintroduced Pampas deer, jaguars, and red-and-green macaws back to the wild.
Mongabay

2. United States

Bison graze at Theodore Roosevelt National Park in Medora, North Dakota. Tallgrasses evolved alongside bison, which graze for up to 11 hours a day.

Bison helped resurrect a section of the American prairie, offering hope for similar ecosystems globally. Before settlers altered the landscape, millions of bison lived among tall perennial grasses on a tract of land that stretched from Texas to Canada. Today, less than 5% of the tallgrass prairie remains. A strategy combining bison grazing with seasonal fires has restored 40,000 acres of land on the Joseph H. Williams Tallgrass Prairie Preserve in northeast Oklahoma.  

Cattle ranching had destroyed the ecosystem due to cramped overgrazing before bison were reintroduced in 1993. Now the land is managed by The Nature Conservancy, which focuses on restoring the surprising amount of biodiversity native to the prairie. The team started with North America’s largest mammal since the free-ranging bison spend much of their time grazing, keeping certain plants in check and allowing others to flourish. The original herd of 300 has since grown to 2,500. “They’ve never been domesticated, and one of our policies is to respect as best we can the wildness of that species,” explained Sam Fuhlendorf, a professor at Oklahoma State University. “We’ve tried to understand the way this system would have operated historically and restore it as closely as possible.” Healthy tallgrasses now cover the land, helped by controlled fires that allow for natural regrowth. Experts say the technique could also work on cattle ranches.
PBS Terra

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