Big Problem in the Big Easy: Invasive Cuban Treefrogs Move into Louisiana

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iStock

Louisiana is now home to one more frog species, and that's a problem. According to Popular Science, scientists have found invasive Cuban treefrogs at a New Orleans zoo, marking the first toehold the amphibians have been able to make in the U.S. outside of Florida.

Cuban treefrogs are native to Cuba, the Cayman Islands, and the Bahamas, but they came to the U.S. in the 1920s by way of the Florida Keys. They have since spread as far north as Jacksonville. The massive frogs—females can grow up to 6 inches long—are major pests, hunting several species of native Floridian frogs and out-competing others, clogging drains and setting up camp in toilets, and occasionally causing power outages when they decide to hide in utility boxes.

Now, the species is showing up in New Orleans, more than 430 miles away. They may have stowed away on a 2016 shipment of palm trees from Lake Placid, Florida bound for the elephant exhibit at New Orleans's Audubon Zoo.

A U.S. Geological Survey in the fall of 2017 captured hundreds of the frogs on and around the zoo's grounds. Over the course of four surveys, USGS scientists found 367 frogs and 2000 Cuban treefrog tadpoles. They drained the two pools where the tadpoles were swimming in the hopes of killing off any they missed, but the likelihood of reversing the spread of the frogs is low. The USGS warned in a recent press statement that "eradicating the recently discovered population in Louisiana is improbable." The frogs reproduce quickly and will eat almost anything. Based on the results of these surveys, it seems they have already driven out all the native frogs in Riverview, the section of Audubon Park where the tadpoles were found.

Brad Glorioso, the lead USGS ecologist on the study, explained that while stowaway treefrogs have trouble surviving when they make their way to higher latitudes, the climate around New Orleans seems to be more hospitable to them. "They often end up in places with unsuitable climates, but in south Louisiana, Cuban treefrogs appear capable of withstanding seasonal cold spells by seeking appropriate refuge," he said.

For now, the best scientists can hope for is keeping the frogs from moving across the river from the zoo into one of the large public nature preserves nearby.

[h/t Popular Science]

Your Balloons Are Bad for Seabirds

iStock.com/Image Source
iStock.com/Image Source

Bad news, party planners: Your balloons are killing birds. A new study spotted by Live Science reveals that these colorful decorations often end up in our oceans, where seabirds mistake them for squid and consume them.

The team of Australian researchers studied more than 1700 seabirds belonging to 51 different species. One in three of the birds had plastic in their systems. Researchers also found that the birds had a 20 percent chance of dying after ingesting a single piece of debris. Though hard plastics were consumed in greater quantities by seabirds, balloons proved to be far deadlier. Eating them is “32 times more likely to result in death than ingesting hard plastic,” researchers write in their paper, published in the journal Scientific Reports.

“Marine debris ingestion is now a globally recognized threat,” Lauren Roman, who led the study, said in a statement. “Among the birds we studied, the leading cause of death was blockage of the gastrointestinal tract, followed by infections or other complications caused by gastrointestinal obstructions.”

The study also highlighted another startling statistic: 99 percent of all seabird species are predicted to ingest marine debris by 2050. That is of great concern in Australasia, which is home to the world's highest biodiversity of seabirds. Albatross and petrel species are particularly under threat, but the exact role that debris plays in that is not fully known.

Similarly, a survey from last December found microplastics in the guts of all seven sea turtle species that were studied, including the endangered green turtle and critically endangered hawksbill and Kemp's ridley turtles. However, these particles are smaller than balloon bits, and the consequences of ingesting microplastics are still being studied.

According to researchers, the most obvious and immediate solution is to reduce the amount of waste entering oceans.

[h/t Live Science]

Greta Thunberg, 16-Year-Old Swedish Environmental Activist, Has Been Nominated for the Nobel Peace Prize

Maja Hitij/Getty Images
Maja Hitij/Getty Images

Greta Thunberg hasn't graduated high school yet, but she's already a nominee for the Nobel Peace Prize. As TIME reports, the Swedish activist is being considered for the honor in recognition of her work in the fight against climate change.

The 16-year-old first made news in August 2018, when she led a school strike for climate action outside the Swedish Parliament. That first demonstration has evolved into the Fridays for Future movement, in which young people around the world skip class on Fridays to protest outside their nearest town hall. In addition to her on-the-ground activism, Greta Thunberg has also given a TED Talk on climate change and addressed the U.N. Climate Change Conference in Poland on the subject.

Three Norwegian lawmakers nominated her for the Nobel Peace Prize, with parliamentary representative Freddy Andre Oevstegaard telling the Norwegian media outlet VG, “We have nominated Greta because the climate threat may be one of the most important causes of war and conflict.” If she wins the award in October, she will become the youngest Nobel Peace Prize laureate ever. Malala Yousafzai, who was 17 when she won for her work defending children's education, currently holds that title.

More than half a year after leading her first climate protest, Thunberg's movement is going strong. Student protests set for Friday, March 15 are expected to be the largest Friday for Future demonstrations yet, with tens of thousands of students in 100 countries planning to participate.

[h/t TIME]

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