Africa’s Ancient Baobab Trees Are Mysteriously Dying
Africa’s Ancient Baobab Trees Are Mysteriously Dying
Row of baobab trees in Madagascar
13 June, 2018, 22:12
Baobab trees commonly form multiple stems, and though the walls of these stems, or trunks, can hold large amounts of water, numerous stems are hollow. And baobab specialist Sarah Venter of the University of Witwatersrand says if drought was the problem, it would affect all baobabs, not just the largest and oldest. But his finding about the deaths came as no surprise: Anecdotal evidence of a die-off was already spreading in the baobab research community.
"It is very surprising to visit monumental baobabs, with ages greater than a thousand to two thousand years, which seem to be in a good state of health, and to find them after several years fallen to the ground and dead", says study co-author Adrian Patrut of Romania's Babes-Bolyai University.
Thats a tragic loss, considering the history and culture attached to these trees - which are also a key food source for people.
"It's a odd 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".
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". It is found naturally in Africa's savannah region, and outside the continent in tropical areas to which it was introduced. An exact cause isn't known but an increasing number of scientists suspect climate change.
Some of the largest trees have died over the last 12 years.
The report in the journal, Nature Plants, said that its research had found that nine of the 13 oldest, and five of the six largest individual trees studied, had died in the past 12 years.
"(They do refer to other baobab mortality but don't have real data on it)", Lovejoy continued.
The oldest tree by far, of which all the stems collapsed in 2010/11, was the Panke tree in Zimbabwe, estimated to have existed for 2,500 years.
Some of the largest are more than 20m wide - one specimen in South Africa known as the Platland housed a bar until it began to rot and split apart in 2016. "It is hard to come up with a culprit other than climate change".
Diane Mayne, a baobab ecologist who worked with Patrut in South Africa, called his theory a "fantasy" that lacks "a single reference on wood, anatomy, allometry or biomechanics or the hollowing process - despite recent research in these fields".
Whatever the cause, these mysterious deaths will have a big impact on the southern African landscape.
According to a report in the journal Nature Plants, no one has been able to figure out the reason behind the falling of these big trees, but scientists suspect climate change to be the culprit.
Patrut said the dead trunks were only 40% water‚ instead of the 75% to 80% they should have been.
The average is taken over a specific period of time, like 10 days, 20 minutes, 30 weeks, or any time period the trader chooses. If trading volume increases, prices move in the same direction. (3) A sideways trend, where the price is moving sideways.
Trump and Kim were returning to their respective strongholds following the talks - but to far different receptions. "Just landed - a long trip, but everybody can now feel much safer than the day I took office", he tweeted .
Billy McFarland - the entrepreneur behind the controversial Fyre Festival - faces new charges of wire fraud and money laundering. MacFarland was charged Tuesday in NY with one count of wire fraud and one count of money laundering.
Mr Blackford was asking for the Commons to sit in private when he was called to ask a question during the weekly PMQs session. SNP leader and Scottish First Minister Nicola Sturgeon tweeted minutes later that she was "right behind" her party's MPs.
A meal named the Suhoor is eaten before daybreak, and a meal called the Iftar will be partaken immediately after sunset. Depending on when Eid begins, Shawwal 3 will either coincide with Sunday, June 17, or Monday, June 18.
This bacterium , as well as coliforms, were also more likely to reside on towels used by families with non-vegetarian diets. Repeated use of tea towels in the kitchen could be putting families at risk of food poisoning , according to new research.
Companions may be temporary sidekicks as they were in The Witcher 3 , or they may be more permanent like they were in Fallout 4. Dialogue options are also included, and you'll be able to level up something called "Street Cred" as you progress.
The three proposed states are split fairly evenly by population, but differ in terms of median income and leading industry. An April poll from Survey USA found that voters were not in favor of splitting the state by a margin of 4 to 1 .
But Ricciardo, who will start sixth, believes Red Bull can fight for victory - which would be their third in seven races in 2018. Brendon Hartley drives during practice at Circuit Gilles Villeneuve .
NCAA eases up on Division I football redshirt restrictions
Miami Athletic Director Blake James , the Division I Council Chair, said it's a move that will benefit both players and coaches. That idea has fallen off the table amid concerns about creating an inequitable system that could face legal challenges.
Everyone gets free Taco Bell today
The Golden State Warriors accomplished that twice against the Cleveland Cavaliers on their way to another championship. In past years, Taco Bell has held a similar "Steal a Base, Steal a Taco" promotion during the World Series.
Uber driver who booted 2 kissing women has licence suspended
After they left the auto , they confronted driver Ahmad El Boutari about it and he said that they were being "disrespectful". Normally private, they say they now plan to attend the city's June 24 Pride parade, which celebrates the LGBTQ community.
Mars Rover Opportunity Hunkers Down During Dust Storm
This latest data transmission showed the rover's temperature to be about minus 20 degrees Fahrenheit (minus 29 degrees Celsius). The small blue dot in the below image of the storm (click to enlarge) indicates Opportunity's location in Perseverance Valley.
Luka Doncic won't withdraw from NBA Draft, report says
It's tough to determine which player would be included in the deal, but the favorite would likely have to be Tobias Harris . A more seasoned Doncic could end up leading the franchise as Conley and Marc Gasol near the end of their prime years.
Geraint Thomas wins Criterium du Dauphine
Thomas's Italian Sky team-mate Gianni Moscon is third overall on the same time as Caruso. Yates said: "The Tour de France has been my main goal for the whole season".