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B.C. bat experts say the ‘misrepresented’ mammals need ‘condos,’ not rooms

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Small wooden tree-mounted boxes for bats are an increasingly common sight in B.C.’s urban parks, often resembling birdhouses except with entrances underneath.

After a string of tragedies near bat boxes, B.C. scientists teamed up to investigate.

What they learned over four years, they say, has changed how we should be building summertime homes for mother bats and their pups, with the species’ survival at stake.

“For them to to raise that young they need just-right temperatures to do so,” explained study co-author Cori Lausen. “And all it takes is about a degree or two to put the temperatures of these bat boxes into a lethal zone.”

Based in Kaslo, B.C., nearly 200 kilometres east of Kelowna in B.C.’s Interior, Lausen is considered a foremost bat expert, known for her Royal B.C. Museum handbook Bats of British Columbia.

Their findings: for bat species that raise offspring in roosts — usually tree hollows or building attics — a single-room occupancy home is not safe without multiple other areas nearby to move to if they overheat.

Even better are multi-unit buildings they nicknamed bat “condos.”

“That gives them more options,” explained another bat researcher, Susan Dulc, at Thompson Rivers University. “For reproductive females that form colonies, bigger and more is better.”

The bizarre mating habits of bat species revealed in new study

 

Darius Mahdavi, CBC’s science and climate specialist, takes Amy Bell through a study published in the Biology Journal on the mating habits of Serotine bats. Researchers found the species uses penis in a unique way during reproduction in order to completely avoid penetration.

Red flags for survival

The Wildlife Conservation Society Canada launched its study after a troubling series of incidents near bat boxes, said Lausen, who directs the non-profit’s western bat program.

“The main red flag occurred right around four or five years ago,” Lausen recalled. “We were starting to notice bats dropping dead out of bat boxes and in some cases big piles of dead bats.”

One particularly tragic incident occurred at ƛ̓éxətəm Regional Park in Port Coquitlam, about 25 kilometres east of Vancouver, then called Colony Farm. It was a wake-up call.

“It’s particularly depressing for myself, because I have put my entire adult life into trying to save them,” Lausen said. “We started looking more closely at why that might be going on.”

Their study — “Best Management Practices for the Use of Bat Houses in the US and Canada” — looked into which structures were best designed to help bats survive temperature fluctuations. They recommend roosts with at least four rooms, or multiple boxes with varying degrees of sun exposure.

In particular, researchers focused on summertime shelters used by three at-risk bat species: yuma myotis, big brown bats, and little brown myotis.

The latter species was declared endangered a decade ago by the federal government, which stated it’s at risk of “catastrophic declines” to less than one per cent of its population due to “massive mortality events.”

Both species are also at particular risk for a severe and fatal fungus known as white-nose syndrome, which has killed millions of bats.

“Watching bats die is not what any of us really want to see,” Lausen said.

She said she’s been heartened to see more people going to some effort to help the furry flyers — including landowners manually raising and lowering sun shades during heat waves to cool their bat houses out of concern. Lausen’s new design advice makes that task easier.

“It’s been fabulous watching how many people care about the bats,” she said. “There’s so many roles that bats play by being the main consumer of nighttime insects.”

“We need bats; of course, they need us too.”

A person wearing a face mask, rubber gloves and headlamp holds a small bat.
Kaslo, B.C., scientist Cori Lausen, author of Bats of British Columbia, holds a bat as part of her research. Her face mask and gloves are for the bat’s safety, not just hers. (Submitted by Michael Proctor)

‘Love at first bite’

Lausen is part of a small but passionate community of researchers who focus on the flying mammals.

Her obsession with bats started two decades ago, during her biology undergraduate studies, when she encountered her first bat up close.

“It was kind of love at first bite for me — literally — because it was a big brown bat in an attic, and it bit,” she recounted. “I realized this is a wild animal that we know so little about.

“That first bat I held was older than me. I thought, ‘How is that even possible, this tiny little animal?'”

Some species of the nocturnal animals can live for well over 20 or even 30 years, Lausen said, and most only have one or two babies a year.

They are the only mammal that has evolved to fly. But not all bats live in large colonies, nor do they spend all year hanging from cave roofs — a behaviour generally reserved for hibernation, if there are no insects to eat.

“There’s a lot of myths,” Lausen said. “For many years, people have expressed fear of bats … Humans tend to think negative things about things we don’t really understand or we can’t see.

“Bats are underdogs, really, in many ways.”

A wood building on four wood poles is raised far above a truck parked on the ground below in the countryside.
A massive building for a bat colony is seen near Creston, B.C., one of the examples of a climate change-resilient habitat for the at-risk species, according to the Wildlife Conservation Society Canada. (Submitted by Jared Hobbs)

There are risks to handling or being bitten by bats: they can occasionally transmit rabies, and experts believe bat species in Asia played a role in the origins of human coronaviruses. Researchers get rabies vaccines and wear protective equipment.

But for non-scientists, Lausen said the risks are negligible.

“That’s for us to worry about,” she said. “People shouldn’t be handling bats, but as just a member of the public, you don’t have to worry.”

Bat scientists wear thick gloves, respirator masks, and sometimes protective suits when handling the animals.

“For their protection,” Dulc added, “not ours.”

A person wearing a while protective suit and facemask looks at a small mounted camera on a wood small wood structure raised on stilts above the ground.
Bat scientist Susan Dulc, a Master’s student at Thompson Rivers University, examines a camera to monitor the exit of an artificial bat habitat in B.C.’s Interior. (Submitted by Jared Hobbs)

She remembers her first encounter with the furry flyers, where she instantly wanted to help them survive.

In 2012, Dulc was studying butterflies, when Lausen invited her to help put out bat nets over a lake.

Dulc discovered one tangled in the water and plunged to its rescue without hesitation.

“The water was so deep it filled my waders up,” she recalled. “I didn’t really care, ‘I’ve got to make sure this poor little bat doesn’t drown.’

“I think they’re really, really cute. All of them. They’re misrepresented.”

A bat sits with wings folded and a grouchy facial expression.
A little brown myotis bat, also known as an MYLU, is seen in a photograph. (Submitted by Cori Lausen)

 

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Here’s how Helene and other storms dumped a whopping 40 trillion gallons of rain on the South

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More than 40 trillion gallons of rain drenched the Southeast United States in the last week from Hurricane Helene and a run-of-the-mill rainstorm that sloshed in ahead of it — an unheard of amount of water that has stunned experts.

That’s enough to fill the Dallas Cowboys’ stadium 51,000 times, or Lake Tahoe just once. If it was concentrated just on the state of North Carolina that much water would be 3.5 feet deep (more than 1 meter). It’s enough to fill more than 60 million Olympic-size swimming pools.

“That’s an astronomical amount of precipitation,” said Ed Clark, head of the National Oceanic and Atmospheric Administration’s National Water Center in Tuscaloosa, Alabama. “I have not seen something in my 25 years of working at the weather service that is this geographically large of an extent and the sheer volume of water that fell from the sky.”

The flood damage from the rain is apocalyptic, meteorologists said. More than 100 people are dead, according to officials.

Private meteorologist Ryan Maue, a former NOAA chief scientist, calculated the amount of rain, using precipitation measurements made in 2.5-mile-by-2.5 mile grids as measured by satellites and ground observations. He came up with 40 trillion gallons through Sunday for the eastern United States, with 20 trillion gallons of that hitting just Georgia, Tennessee, the Carolinas and Florida from Hurricane Helene.

Clark did the calculations independently and said the 40 trillion gallon figure (151 trillion liters) is about right and, if anything, conservative. Maue said maybe 1 to 2 trillion more gallons of rain had fallen, much if it in Virginia, since his calculations.

Clark, who spends much of his work on issues of shrinking western water supplies, said to put the amount of rain in perspective, it’s more than twice the combined amount of water stored by two key Colorado River basin reservoirs: Lake Powell and Lake Mead.

Several meteorologists said this was a combination of two, maybe three storm systems. Before Helene struck, rain had fallen heavily for days because a low pressure system had “cut off” from the jet stream — which moves weather systems along west to east — and stalled over the Southeast. That funneled plenty of warm water from the Gulf of Mexico. And a storm that fell just short of named status parked along North Carolina’s Atlantic coast, dumping as much as 20 inches of rain, said North Carolina state climatologist Kathie Dello.

Then add Helene, one of the largest storms in the last couple decades and one that held plenty of rain because it was young and moved fast before it hit the Appalachians, said University of Albany hurricane expert Kristen Corbosiero.

“It was not just a perfect storm, but it was a combination of multiple storms that that led to the enormous amount of rain,” Maue said. “That collected at high elevation, we’re talking 3,000 to 6000 feet. And when you drop trillions of gallons on a mountain, that has to go down.”

The fact that these storms hit the mountains made everything worse, and not just because of runoff. The interaction between the mountains and the storm systems wrings more moisture out of the air, Clark, Maue and Corbosiero said.

North Carolina weather officials said their top measurement total was 31.33 inches in the tiny town of Busick. Mount Mitchell also got more than 2 feet of rainfall.

Before 2017’s Hurricane Harvey, “I said to our colleagues, you know, I never thought in my career that we would measure rainfall in feet,” Clark said. “And after Harvey, Florence, the more isolated events in eastern Kentucky, portions of South Dakota. We’re seeing events year in and year out where we are measuring rainfall in feet.”

Storms are getting wetter as the climate change s, said Corbosiero and Dello. A basic law of physics says the air holds nearly 4% more moisture for every degree Fahrenheit warmer (7% for every degree Celsius) and the world has warmed more than 2 degrees (1.2 degrees Celsius) since pre-industrial times.

Corbosiero said meteorologists are vigorously debating how much of Helene is due to worsening climate change and how much is random.

For Dello, the “fingerprints of climate change” were clear.

“We’ve seen tropical storm impacts in western North Carolina. But these storms are wetter and these storms are warmer. And there would have been a time when a tropical storm would have been heading toward North Carolina and would have caused some rain and some damage, but not apocalyptic destruction. ”

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Follow AP’s climate coverage at https://apnews.com/hub/climate

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Follow Seth Borenstein on Twitter at @borenbears

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Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

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‘Big Sam’: Paleontologists unearth giant skull of Pachyrhinosaurus in Alberta

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It’s a dinosaur that roamed Alberta’s badlands more than 70 million years ago, sporting a big, bumpy, bony head the size of a baby elephant.

On Wednesday, paleontologists near Grande Prairie pulled its 272-kilogram skull from the ground.

They call it “Big Sam.”

The adult Pachyrhinosaurus is the second plant-eating dinosaur to be unearthed from a dense bonebed belonging to a herd that died together on the edge of a valley that now sits 450 kilometres northwest of Edmonton.

It didn’t die alone.

“We have hundreds of juvenile bones in the bonebed, so we know that there are many babies and some adults among all of the big adults,” Emily Bamforth, a paleontologist with the nearby Philip J. Currie Dinosaur Museum, said in an interview on the way to the dig site.

She described the horned Pachyrhinosaurus as “the smaller, older cousin of the triceratops.”

“This species of dinosaur is endemic to the Grand Prairie area, so it’s found here and nowhere else in the world. They are … kind of about the size of an Indian elephant and a rhino,” she added.

The head alone, she said, is about the size of a baby elephant.

The discovery was a long time coming.

The bonebed was first discovered by a high school teacher out for a walk about 50 years ago. It took the teacher a decade to get anyone from southern Alberta to come to take a look.

“At the time, sort of in the ’70s and ’80s, paleontology in northern Alberta was virtually unknown,” said Bamforth.

When paleontogists eventually got to the site, Bamforth said, they learned “it’s actually one of the densest dinosaur bonebeds in North America.”

“It contains about 100 to 300 bones per square metre,” she said.

Paleontologists have been at the site sporadically ever since, combing through bones belonging to turtles, dinosaurs and lizards. Sixteen years ago, they discovered a large skull of an approximately 30-year-old Pachyrhinosaurus, which is now at the museum.

About a year ago, they found the second adult: Big Sam.

Bamforth said both dinosaurs are believed to have been the elders in the herd.

“Their distinguishing feature is that, instead of having a horn on their nose like a triceratops, they had this big, bony bump called a boss. And they have big, bony bumps over their eyes as well,” she said.

“It makes them look a little strange. It’s the one dinosaur that if you find it, it’s the only possible thing it can be.”

The genders of the two adults are unknown.

Bamforth said the extraction was difficult because Big Sam was intertwined in a cluster of about 300 other bones.

The skull was found upside down, “as if the animal was lying on its back,” but was well preserved, she said.

She said the excavation process involved putting plaster on the skull and wooden planks around if for stability. From there, it was lifted out — very carefully — with a crane, and was to be shipped on a trolley to the museum for study.

“I have extracted skulls in the past. This is probably the biggest one I’ve ever done though,” said Bamforth.

“It’s pretty exciting.”

This report by The Canadian Press was first published Sept. 25, 2024.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

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