(I know cane toads are an abhorrent, invasive species, being moved [by humans!] from their original place on the planet to another place, to try to control another species. However, there is a YA novel about cane toads that ended up being a “banned book” one year. The then-kid was really into banned books, so we bought it, and it was a bit of a tear-jerker and I have a tiny soft spot for them, since it wasn’t their faults they got transplanted; they were only doing the best they could. Anyway, here’s this.)
Scientists have successfully saved freshwater crocodiles from toxic cane toads invading northern Australia with an unusual new tactic – doctored cane toad carcases.
By teaching freshwater crocodiles (Crocodylus johnstoni) to associate cane toads (Rhinella marina) with a bout of food poisoning, they reduced death rates by at least 95%.
Across the dry season (May to October) between 2019 and 2022, Macquarie University scientists worked on the project with Bunuba Indigenous rangers and the Department of Biodiversity, Conservation and Attractions (DBCA) in Western Australia.
They collected cane toads, removed the poisonous parts, and injected the bodies with a nausea-inducing chemical that caused the crocs eating them to feel temporarily sick.
It’s a behavioural ecology method known as conditioned taste aversion, and it worked remarkably well.
“The first three days we noticed the crocodiles were taking the cane toads, then they would go away,” says Bunuba ranger coordinator Paul Bin Busu, whose team set up hundreds of bait stations across 4 large gorge systems in the Kimberley region of north-western Australia.
The doctored cane toads were deployed alongside chicken meat control baits to monitor the effectiveness of the training.
“Then we noticed they would smell the cane toad before eating, and on the last day we noticed that it was mostly the chicken necks getting eaten,” says Bin Busu.
The team used nocturnal ‘spotlighting’ surveys and remotely triggered wildlife cameras to monitor crocodile and toad numbers following the intervention.
“Our baiting completely prevented deaths in areas where cane toads were arriving and decreased deaths by 95% in areas where toads had been for a couple of years,” says Macquarie’s Dr Georgia Ward-Fear, who is lead author of the report detailing the findings in Proceedings of the Royal Society B.
Ward-Fear says these effects continued in the years following.
Some populations of freshwater crocodiles in tropical Australia have fallen by more than 70% due to ingesting cane toads.
“Freshwater crocs can be heavily impacted as their river systems dry out during the late dry season,” says Ward-Fear.
“They end up congregating in large numbers with very little food, and as toads begin to use these waterbodies for rehydration, the two come into contact and we see large numbers of crocodile deaths over a few months.”
Now, conditioned taste aversion interventions can be planned both ahead of and behind the cane toad invasion front in areas with similar ecology.
Some time ago, many animals, including saber-toothed tiger and woolly mammoth, failed in their attempts to rid the community of grizzly bear, whose mean-spirited behavior had upset nature’s balance. That is until the birds, led by robin, pierced grizzly’s heart. Grizzly’s blood reddened the robin’s breast and, as he shook in pain, cloaked the autumn leaves in red and orange.
“The Creator placed the grizzly bear constellation in the night sky to remind us that bullying others carries consequences,” says Matricia Bauer, an Indigenous Knowledge Keeper from Sturgeon Lake Cree Nation. “Our creation story also tells of the star woman falling from the sky to become our people.”
It’s a brisk March evening, and I’m sitting with Bauer by the fire beside Beauvert Lake in Jasper, Alberta, waiting for the gunmetal-colored sky to darken and reveal a palette of seemingly infinite stars. I’m visiting to explore the most accessible and second-largest Dark Sky Reserve in the world.
Shining star: Matricia Bauer, Indigenous Knowledge Keeper from Sturgeon Lake Cree Nation, leads Warrior Women, a collective presenting cultural education through drum and song. (Courtesy Tourism Jasper)
“An elder taught me that when you used to look at the night sky and see all the stars, the Creator also looked down on Earth and saw our fires in reflection. Today, instead of fires sparkling across the landscape, our continents are outlined by the glare of artificial light. People must travel to find the night sky.” (snip-MORE )
Stonehenge’s 6-tonne Altar Stone was transported from Scotland
August 15, 2024 Evrim Yazgin
How was Stonehenge built in ancient Britain 5,000 years ago?
New evidence suggests the Late Stone Age people who made the colossal structure would have to have used advanced transport methods to move the stones even further than previously thought.
The Altar Stone at Stonehenge circled in black. Credit: English Heritage.
According to English Heritage, the largest stones – called sarsens and weighing up to 30 tonnes – are believed to have been transported from Marlborough Downs, about 32 kilometres away from the site.
The smaller stones weigh less than 10 tonnes. They were thought to have all come from the Preseli Hills in Wales more than 200km away. Transporting these gigantic stones this far would have been a monumental feat for ancient people in Britain.
But new research published in the journal Nature suggests that one stone, the 6-tonne Altar Stone, has its origins even further afield in Scotland.
The Altar Stone, seen here underneath two bigger Sarsen stones. Credit: Professor Nick Pearce, Aberystwyth University. (snip-More)
Gary Baker with the solvent. Credit: Sam O’Keefe/University of Missouri
US researchers have made substances that can extract nanoplastics from water.
The solvents, made from non-toxic components, could remove 98% of the tiny plastic particles from water in a lab environment.
The team has published its research in ACS Applied Engineering Materials.
“Our strategy uses a small amount of designer solvent to absorb plastic particles from a large volume of water,” says corresponding author Gary Baker, an associate professor at the department of chemistry in the University of Missouri-Columbia. (snip-More)
Scientists have made an unexpected discovery in a thousand-year-old abandoned fortress in Mongolia.
Buried in the walls of the fortress is the grave of an elite woman who pre-dates the rise of the founder of the Mongolian Empire, Genghis Khan (also known as Chinggis Khan). The frontier fortress is about 1.4 km west of Khar Nuur lake in eastern Dornod province of Mongolia, only kilometres from the Chinese border.
Khar Nuur lake. Credit: Tuul & Bruno Morandi / The Image Bank / Getty Images Plus.
Genghis Khan rose to prominence in 1206 CE. Before that, the Kitan-Liao Empire controlled great swaths of land between 916 and 1125 CE.
The period between these great dynasties is poorly understood as very few records survive. (snip-More)
Thirty years ago, when Michael Goldberg would dive in the glimmering blue water of the British Virgin Islands, the reefs were teeming with life. “The expanse of these reefs was astounding,” says Goldberg, a cofounder of I.CARE, a Florida-based reef restoration organization. “The corals were so thick and lush.”
Today those reefs are dying. In much of the Atlantic Ocean, including the Florida Keys, where the 61-year-old Goldberg lives, roughly 70-95 percent of the coral is gone, devastated by disease, rising sea temperatures, and other existential threats.
By 2015, as the reefs declined, Goldberg faced a decision. He would either leave the scuba industry — since 2004, he has owned Key Dives, which provides diving and snorkeling on the Keys’ Islamorada reefs — or take action to restore the coral. Fortunately for Florida, the ocean, and humanity, he chose the latter.
In 2019, Goldberg cofounded I.CARE (Islamorada Conservation and Restoration Education). The mission: To restore and maintain Islamorada’s reefs by teaming with local businesses, residents, and visitors, including local dive shops and recreational divers. Activities range from underwater trash clean-ups — since 2021, divers have lugged 20,000 pounds of debris to the surface — to coral transplants. Over the past three years, I.CARE has planted over 15,000 corals on six different reefs.
The need is urgent. Coral reefs provide food and shelter to thousands of organisms — crustaceans, fish, anemones, sponges — and protect shorelines from storms and erosion. The reefs’ economic benefits include tourism and commercial and recreational fishing. Coral has even been used in medical technologies such as “bone grafting techniques and possible treatments for diseases including Alzheimer’s and cancer,” I.CARE notes.
“I love educating people about the importance of this, but the most gratifying thing for me is seeing the coral grow,” Goldberg says. “I love seeing little baby corals thrive in a harsher environment than I ever imagined, and knowing that despite all the challenges, we’re seeing success.”
Goldberg’s career initially focused on money management rather than ocean management. His love of the water began when he was a boy in Los Angeles, but his family moved to Chicago when he was 10, and he later studied finance at Northern Illinois University. On a summer trip to Acapulco, he dove for the first time, purely, he says, “as a lark.”
“Someone got me some gear, and I wasn’t certified, and I didn’t know what I was doing,” he says. Acapulco is not known for stellar diving experiences, but he loved it: “I was just so enamored with being underwater.”
After that, he was hooked. He earned his diving certification and then moved back to one of L.A.’s beach communities and became an instructor. Before long, he and his wife decided to move to the British Virgin Islands. Eight years later, the couple returned to the United States and opened Key Dives in Islamorada.
Hope and water: “If I wasn’t optimistic, I wouldn’t keep doing this,” says I.CARE cofounder Michael Goldberg. (Photo courtesy Michael Goldberg)
Goldberg has made over 10,000 dives, swimming not only with dolphins and schooling sharks, but within 15 feet of a humpback whale as it breached. And yet the vast coral reefs have always intrigued him most, whether diving alone or taking clients off the island of Virgin Gorda in the British Virgin Islands.
“There was this one unique piece of coral that I would swim underneath — it was like a tree,” he says. “Most people want to see fish, but to me, that coral was always the highlight of the dive.”
In 2017, Goldberg met Kylie Smith, who was working on her Ph.D. at Clemson University and studying coral in the Florida Keys. Smith would fill her tank at Key Dives, and Goldberg, who was “already shifting my business toward conservation,” would tap into her aquatic expertise.
“When I met Dr. Smith, I would pepper her with questions — she couldn’t walk in my store and leave in quick fashion,” Goldberg says. Their discussions eventually moved from the dive shop to a beer garden at The Florida Keys Brewing Company. “We would sit and chat, and I kept saying to her, I’ve got an idea to empower recreational divers so that they can become citizen scientists — not only because they want to be part of the solution, but because they need to be a part of the solution. That’s the largest potential boots-on-the-ground army that can enact so much of what we do.”
Those discussions led them to co-launch I.CARE. By January 2021, volunteer divers had transplanted I.CARE’s first corals.
For the coral restoration, divers use coral raised in nurseries. Once it’s planted on the reefs, the coral will, hopefully, reproduce into a coral colony — but the process is slow. It can take 20-50 years for coral to grow large enough to spawn.
To speed up reproduction, I.CARE uses a process called micro-fragmentation. Larger corals are cut into thumbnail-size pieces and grown in a nursery. When those pieces grow to about the size of a 50-cent piece, they are planted edge to edge on a living coral structure. After a few years, the coral fuse to become one larger coral, and they’ll start to spawn in about 7 to 10 years.
For the micro-fragmentation work, I.CARE rescues coral that has broken free from the main reef structure due to storms and substrate erosion.
“What is cool about these corals is that these are the survivors. They are the most resilient, the ones that have persisted despite all the disease and heat,” says Goldberg. “It’s survival of the fittest in the truest sense, and the ones we are using to rebuild our precious reefs.”
Despite the advances, the challenges are huge, both for I.CARE and the planet. During the intense heat of summer 2023, most of I.CARE’s seemingly healthy coral fragments died at one of Goldberg’s favorite reefs. “I cried underwater,” he admits. But he prefers to focus on the organization’s victories. Seventy-seven of the fragments survived and are thriving.
“If I wasn’t optimistic, I wouldn’t keep doing this,” he says. “We’ve had successes, and we can build on those successes.”
When it comes to restoring the reefs for future generations, he offers a simple vow: “We’re not gonna give up.”
Ken Budd has written for The Washington Post, The Atlantic, The New York Times, National Geographic Traveler, and many more. He is the author of an award-winning memoir, The Voluntourist.
This article is featured in the July/August 2024 issue of The Saturday Evening Post.
In a small town in the old west, a lone and weary gunfighter enters a saloon. As he walks through the room surrounded by the people of the town, a voice begins narrating the scene, telling us exactly who this gunfighter is. But unlike every classic western to use the narrator trope, the characters in this film can hear the voice. This omniscient narrator quickly begins divulging the deepest, darkest secrets of the people in the saloon. He exposes infidelity, homosexuality, prejudice and even a bit of bestiality. As the story unfolds it becomes evident that the voice is a bloodthirsty bastard that wants nothing more than to see the people of the town kill each other in a needless gunfight.
C’mon-we all at least wanted to drink pop this way when we were young. Heck, I have days I’d like to do it now! Not to mention the joy of being a hummingbird-enjoy.
Calvin and Hobbes by Bill Watterson for August 12, 2024
I subscribe to their newsletter because I love birds, but I don’t know a lot about them as to ID’ing them, their calls, etc. I love how birds simply keep on keeping on, not seeming to worry about much. Enjoy, if you like; there is lots of info, photos, and you can listen to calls. And more!
Scottie's Playtime 