(TMU) – A vast swathe of the Amazon is teetering on the brink of disaster and risks crossing the tipping point of transforming from a closed canopy rainforest teeming with life to an open savannah with few trees as climate conditions deprive the region of rainfall and effectively kill its unique ecosystem, scientists have warned.
Rainforests are extremely sensitive to even the slightest changes in rainfall and moisture levels, and extended periods of drought and fire can be devastating in areas that rely on rain for sustenance. In the Amazon, such conditions would transform the lush rainforest into a semi-arid savannah-like mixture of woodland and grassland while also boosting the risk of fire.
While such dramatic changes to the Amazon were believed to be worst-case scenarios that could happen decades away, a team of Europe-based scientists warned on Monday that the tipping point is now dangerously close.
A new study published in the journal Nature Communications found that as much as 40 percent of the existing Amazon rainforest is already seeing so little rainfall that it could exist as a savannah-like environment, deprived of its canopy-like tree coverage and with far less biodiversity.
Researchers at the Stockholm Resilience Center used computer models and data analysis to stimulate the effect of continued climate change resulting from emissions from burning fossil fuels from now until the end of the century to find the results.
Rainforests typically create their own rainfall through water vapor, which then sustains and even extends the reach of tree levels.
However, when rain levels plummet, forest land also begins to fade away and degrade – resulting in a drier landscape that becomes more susceptible to the ravages of fire, drought, and ultimately, total deforestation.
The situation in the Amazon has only grown worse as Brazilian President Jair Bolsonaro has stubbornly pushed forward the opening of the rainforest to economic development, unleashing a wave of human-caused fires meant to illegally clear one of the region so that it can be exploited by miners, cattle ranchers, loggers, and big agricultural interests.
This year’s fires in the Brazilian Amazon are the worst in a decade, marking a dizzying 60 percent rise in fire hotspots compared to last year’s infamous blazes.
The rainforest is so delicate that even the most subtle changes in climate conditions can have an outsized impact on the ecological balance of the environment, said the study’s lead author, Arie Staal.
“As forests grow and spread across a region, this affects rainfall,” he told The Guardian. “Forests create their own rain because leaves give off water vapor and this falls as rain further downwind. Rainfall means fewer fires leading to even more forests.”
However, the loss of large areas of rainforest mean a precipitous drop in rainfall levels across the region.
“Drier conditions make it harder for the forest to recover and increase the flammability of the ecosystem,” Staal said.
At that point, the rainforest crosses a threshold and converts into a savannah-type environment – a conversion that is difficult, if not impossible, to reverse.
“It is harder to return from the ‘trap’ caused by the feedback mechanism in which the open, grassy ecosystem is more flammable, and the fires, in turn, keep the ecosystem open,” Staal said.
Experts have warned that the Amazon rainforest is a crucial barrier to the catastrophic breakdown of global climate conditions. Without the Amazon rainforest, carbon dioxide (CO2) emissions could become out of control and drive global warming to intolerable levels while the change in rainfall patterns could impact the entire Western Hemisphere.
Tragically, the loss of rainforests like the Amazon would also entail the extermination of a huge portion of global species.
“We understand now that rainforests on all continents are very sensitive to global change and can rapidly lose their ability to adapt,” said study co-author Ingo Fetzer of the Stockholm Research Center. “Once gone, their recovery will take many decades to return to their original state. And given that rainforests host the majority of all global species, all this will be forever lost.”
Police Rescue Dogs Trapped In Car on Sizzling Hot Day, Owners Complain About Broken Window
Police in the UK acted quickly to save a two dogs locked inside a car in sizzling hot temperatures by smashing open a window, upsetting the car’s owner over the damage.
Officers responded Sunday to reports that a beagle and another dog were trapped in a car parked in the seaside British city of Brighton on a day of boiling heat.
In video captured of the incident, an officer can be seen jamming his baton through a rear window before finally shattering it to free the pooches.
This prompts the car alarm to go off as the car’s owners can be seen rushing toward it, upset over the police intervention.
A woman, standing with her shocked family, says: “You broke my window out!”
One of the officer responded: “It’s a hot day. You shouldn’t be leaving the dog in the car in this weather.”
The incident happened on a day when people across the region flock to the seaside resort city to dip into the beaches amid surging hot temperatures.
The onlooker who filmed the incident noted that the owners seemed unaware of the dangers posed to their pets by weather conditions.
“Where they had parked there is just no shade,” they told The Sun. “It’s directly on the seafront in 25°C (77°F) weather outside – I’ve got no idea what it was inside the car.”
The family was indignant over what they claim was an overreaction by the police.
“At first it was ‘what the f*** are you doing, why did you break my car window? I was only gone for 10 minutes,’” another witness explained.
“The bloke obviously thought he was completely in the right,” they added. “He didn’t really seem to have much empathy.”
According to UK animal welfare group RSPCA, outside temperatures of 22°C (71°F) can reach a brutal 47°C (116.6°F) inside a car within an hour.
“Police officers attended and tried to get a contact number for the owners of the car but were unable,” a Sussex Police spokesperson said. “Officers had no choice but to smash the side window to gain access and a kind member of the public donated a bottle of water.”
Authorities added that the officers let the pet owners off with a stern warning, without ticketing the family or separating their dogs from them.
Golden Retriever Filmed Giving Woodchuck Ride Across Massachusetts Lake
There are some occasions when the natural world resembles something we might think belongs to the realm of Disney films but no – it’s simply the animal kingdom in motion.
Such was the case when a dog owner captured amazing footage of her dog giving a ride to a small rodent across a lake in Massachusetts.
Lauren Russel was with her dog, Wally the golden retriever, at Hickory Hills Lake in Lunenburg last month when the dog encountered a woodchuck in the water.
So Wally did one any good dog of his breed would do – he gave his new friend a ride back to shore.
“He was about 100 meters out and a woodchuck, I think, just crawled right up on his back and he swam back to shore with him,” Russell told WCVB on Monday.
She always knew that her Wally was a friendly pooch, but she never imagined something like this.
“We were flabbergasted. It was unbelievable. We couldn’t believe what we were seeing,” Russell continued.
To top things off, once they arrived onshore, Wally and his fast friend gave each other what appeared to be a kiss.
“They like touched snouts and then he ran away,” Russell said.
You can watch the video of the touching event here:
Tiny Creature Frozen for 24,000 Years is Brought Back to Life
A microscopic creature has come back to life and reproduced asexually after 24,000 years of lying dormant in the permafrost of Siberia.
Russian scientists found the tiny freshwater creature, called the bdelloid rotifer, in the rich soil of the Alazeya river of Russia’s far northern Siberan region of Yakutia.
The multicellular organism is common throughout the world and is known to be extremely resilient, capable of surviving extreme cold, dryness, starvation and low oxygen.
While previous research found that it could survive a decade when frozen at -20 degrees Celsius (-4 Fahrenheit), the new study published by the journal Current Biology offers a stunning testimony of the survivability of the tiny animal – which is by far the longest survival period known of any creature in the world.
“Our report is the hardest proof as of today that multicellular animals could withstand tens of thousands of years in cryptobiosis, the state of almost completely arrested metabolism,” said Stas Malavin, an author of the study, in a statement.
Malavin’s Soil Cryology Lab in Pushchino, Russia, used a drilling rig to extract the miniscule organism from roughly a dozen feet below the remote Arctic location.
Once the ancient organism thawed, it reproduced on its own through a process of parthenogenesis. Researchers then found that it could withstand repeatedly being frozen and thawed dozens of times due to its innate processes of cell and organ protection.
“The takeaway is that a multicellular organism can be frozen and stored as such for thousands of years and then return back to life – a dream of many fiction writers,” Malavin said.
“Of course, the more complex the organism, the trickier it is to preserve it alive frozen and, for mammals, it’s not currently possible,” the scientist added. “Yet, moving from a single-celled organism to an organism with a gut and brain, though microscopic, is a big step forward.”
Researchers hope that the knowledge gleaned from studying the microscopic organism will bring further insights on how to preserve animals’ cells, tissues and organs – including those belonging to human beings.
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