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Offbeat Africa’s most famous trees are dying, and scientists suspect a changing climate

06:55  12 june  2018
06:55  12 june  2018 Source:   msn.com

Toomer’s Oaks in good condition after being replaced

  Toomer’s Oaks in good condition after being replaced The condition of Toomer’s Oaks will determine if Auburn Tigers fans will get to take part in one of their favorite traditions this fall, and the outlook so far seems positive. During college football season, it has become customary for the oak trees at Toomer’s Corner in Auburn to be covered in toilet paper after a big victory by the Tigers. Whether or not that happens next season is still up in the air. The two trees have been replaced a couple of times in recent years. Back in 2011, they were poisoned by an Alabama fan. In 2016 the trees were burned. New trees replaced the burned ones, and then those ones were replaced too. According to what an Auburn arborist told WSFA, the current trees at the location are doing well, and fans have been urged to protect them. “They’re in fair condition at this point,” Auburn University arborist Alex Hedgepath told WSFA 12. “They’re certainly not fully established to their new environment, but considering how large of trees they are and considering the move that they’ve made, I think they’re doing pretty well,” said Hedgepath. “The root development has been very good so we’re hopeful. Right now we’re just asking the fans to help us protect the trees by not rolling them. The university has been determined whether or not the trees will be strong enough to roll this fall but that decision will most likely be made later this summer.” In 2013, fans gathered to say goodbye to the Toomer’s Oaks prior to their removal as a result of the tree poisoner. Hopefully the new trees won’t have to be replaced anytime soon.

Scientists describe an 'event of an unprecedented magnitude' among Africa ' s oldest and largest baobab trees . The baobab tree , sometimes called the “ Tree of Life,” has an unforgettable appearance. Found in savanna regions of Africa , Madagascar and Australia, the trees form a very

Africa ’ s most famous trees are dying , and scientists suspect a changing climate baobab trees , baobab deaths, africa , climate change , ecosystems

a group of palm trees next to a tree with Avenue of the Baobabs in the background © Provided by WP Company LLC d/b/a The Washington Post

The baobab tree, sometimes called the “Tree of Life,” has an unforgettable appearance. Found in savanna regions of Africa, Madagascar and Australia, the trees form a very thick and wide trunk and mainly branch high above the ground. They can grow to be thousands of years old, and develop hollows inside so large that one massive baobab in South Africa had a bar inside it.

But that tree, the more than 1,000-year-old Sunland baobab, apparently the biggest of these trees in Africa, “toppled over” last year. Another famous baobab, the Chapman tree in Botswana, collapsed in 2016.

Yellowstone Geyser Erupts Eight Times in Three Months

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Africa ’ s baobab trees can live for more than 1000 years, but the oldest and largest of them are dying Los Angeles Times. Baobab tree deaths linked to climate change CNN. Ancient baobabs are dying and climate change is the chief suspect Times LIVE.

In South Africa ’ s Limpopo province, a baobab tree once grew so large and stood so strong that its Many equate the English moors with open grassland and bogs. However, they were not always this The culprit behind their deaths is still unknown, though scientists suspect that changing climate is

Something similar, a new scientific study suggests, is happening to the oldest and largest baobabs across the world in “an event of an unprecedented magnitude.”

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The research, by Adrian Patrut of Babes-Bolyai University in Romania and an international group of colleagues, finds that in the past 12 years, “9 of the 13 oldest and 5 of the 6 largest individuals have died, or at least their oldest parts/stems have collapsed and died.”

That’s a tragic loss, considering the history and culture attached to these trees — which are also a key food source for people. The baobab “is famous because it is the biggest angiosperm, and it is the most iconic tree of Africa,” Patrut said.

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Africa ’ s Oldest Trees Are Dying , and Scientists Are Stumped. “The culprit behind their deaths is still unknown, though scientists suspect that changing climate is to blame.” Washinton Post (Chris Mooney). Africa ’ s most famous trees are dying , and scientists suspect a changing climate .

Africa ' s most iconic trees are dying off, and scientists suspect climate change . (Photo: Georges Gobet, AFP/Getty Images). A study published Monday found eight of the 13 oldest trees in Africa have died over the past decade, and the authors suggest climate change may affect the ability of the

Patrut’s co-authors hail from institutions in South Africa and the United States, and the work was published in Nature Plants on Monday. They have been surveying the trees since 2005 and have developed a theory of how they grow, while also documenting the losses.

The contention is that the largest baobabs weave together multiple tree stems around a small “false cavity,” and this is what gives them their unique structure. These stems also can grow together. This leads to a strange feature in which, moving outward from the cavity center, the wood can get older for a time, rather than younger, as might normally be expected.

“This a unique characteristic of the African baobab and all the baobab trees,” said Patrut, who has dated different parts of the trees using radiocarbon-dating methods.

However, another expert on the trees was not fully convinced by this theory of how they grow.

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Baobab trees are dying , but its the oldest of the species, the 1000 year old trees first. Africa ’ s most famous trees are dying , and scientists suspect a changing climate - Продолжительность: 5:38 News Sport Daily 445 просмотров.

It says the largest and oldest ones are dying . dixiegrrrrl. 2. It says the largest and oldest ones are dying . But not a word in the article discussing how long they normally live. So, could be just end of life for them.

“Pretty much every baobab tree in Southern Africa is covered in the healed scars of past elephant attacks, which speaks to the trees’ amazing repair ability,” said David Baum, a University of Wisconsin at Madison botanist who is familiar with the new study and contributed to a Biodiversity International publication cataloguing the trees’ attributes, in an email. “When a tree is damaged to form a hollow, bark can grow into the cavity and eventually start making new wood to fill in the hole. Such repair growth would lead to an inverted age sequence where wood initially gets older as you move towards the outside of the tree from the hollow.”

But Baum does not contest that large baobabs are dying — something he calls “heartbreaking.”

“Each of these trees was unique and special,” he wrote. “They have seen more history than we can imagine.”

Patrut says the largest trees are the most vulnerable — and he believes that a changing climate is involved, although the study itself says that “further research is necessary to support or refute this supposition.”

'Shocking' die-off of Africa's oldest baobabs: study

  'Shocking' die-off of Africa's oldest baobabs: study Some of Africa's oldest and biggest baobab trees -- a few dating all the way back to the ancient Greeks -- have abruptly died, wholly or in part, in the past decade, researchers said Monday. The trees, aged between 1,100 and 2,500 years and some as wide as a bus is long, may have fallen victim to climate change, the team speculated."We report that nine of the 13 oldest... individuals have died, or at least their oldest parts/stems have collapsed and died, over the past 12 years," they wrote in the scientific journal Nature Plants, describing "an event of an unprecedented magnitude.

It's a strange feeling, because these are trees which may live for 2,000 years or more , and we see that they're dying one after another during our lifetime. Africa ’ s most famous trees are dying , and scientists suspect a changing climate - Продолжительность: 5:38 News Sport Daily 1 779

Baobab tree deaths linked to climate change CNN. Southern Africa ’ s ancient baobabs are dying Business Day.

“The largest trees, they need more water and nutrients than the smaller trees, and they are most affected by temperature increase and drought,” Patrut said.

“Something obviously is going on in almost selectively affecting the largest and oldest,” Thomas Lovejoy, an environmental scientist and Amazon rainforest expert at George Mason University, wrote in an email comment on the study.

“(They do refer to other baobab mortality but don’t have real data on it),” Lovejoy continued. “I do think climate is a likely culprit but they don’t actually present any evidence of how climate is changing where these ancient trees occur.”

In Zimbabwe, baobab deaths are reportedly being accompanied by what appears to be some type of fungus that turns the trees black before they die.

But Patrut’s study, which surveys baobabs much more widely, contends that for the oldest trees in particular, the deaths “were not caused by an epidemic.”

The deaths are “an important modification in the ecosystem and the integrity of the biodiversity,” Patrut said.

Looking for signs of global warming? They're all around you .
It's been 30 years since much of the world learned that global warming had arrived, but climate isn't the only thing that's changing: Nature itself is too. That's the picture painted by interviews with more than 50 scientists and an Associated Press analysis of data on plants, animals, pollen, ice, sea level and more. Evidence of climate change is in the blueberry bushes in Henry David Thoreau's Walden Pond, the dwindling population of polar bears of the Arctic and the dying corals worldwide. Scientists have documented 28,800 cases of plants and animals "responding consistently to temperature changes," a 2008 study in the journal Nature said.

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