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Tag: trees

Trees in forests all over the world are getting younger, shorter

Trees in forests all over the world are getting younger, shorter

Science
May 29 (UPI) -- Trees in forests around the world are getting younger and shorter as a result of human-caused climate change and other environmental stressors. New research, published Friday in the journal Science, suggests rising global temperatures and atmospheric CO2 concentrations over the last century, combined with an uptick in environmental stress and extreme weather events, have significantly altered the makeup of the planet's forests. Advertisement The changes have left old growth forests especially vulnerable. For the study, researchers recorded satellite measurements of global forests and completed a survey of the scientific literature on forest health over the last several decades. Their efforts showed increases in tree mortality have left many forests dominated by younger, sh...
Meet the baby orangutans learning to climb trees

Meet the baby orangutans learning to climb trees

Science
While much of the world is in lockdown, youngsters in one very unusual classroom are still having lessons.At a forest school in Borneo, baby orangutans learn tree-climbing skills from their human surrogate parents.The orphans spend 12 hours a day in the forest, preparing for a new life in the wild.The orangutans were filmed and photographed before coronavirus struck, for the TV series Primates, on BBC One.With human contact routinely kept to a minimum, life goes on much as before for the animals, says Dr Signe Preuschoft, leader of ape programmes for the charity Four Paws, which runs the rehabilitation centre in East Kalimantan.As a precaution, the staff now have temperature checks, wear facemasks and change into uniforms on site...
Volcanic time-bomb threatens nearby trees

Volcanic time-bomb threatens nearby trees

Science
Trees growing near to an active volcano face an uncertain future for several years after an eruption, a study has suggested.A reduced ability to absorb essential nutrients from the soil and lower rates of turning sunshine into sugar hampered the trees' growth.A team of researchers also found that toxins released by eruptions continued to limit the trees' growth.The findings appear in the journal Dendrochronologia.The team said that the widespread impact of volcanic eruptions on trees had been well documented, such as the "year without a summer" in 1816, following the massive Tambora eruption in Indonesia in the previous year, which was deemed to be the biggest volcanic eruption in human history.However, they added, there was litt...
Ancient long-lived pioneer trees store majority of carbon in tropical forests

Ancient long-lived pioneer trees store majority of carbon in tropical forests

Science
April 10 (UPI) -- Trees that grow fast, live long and reproduce slowly, known as long-lived pioneers, store the majority of carbon found in tropical forests. Scientists arrived at their discovery after analyzing the different development strategies used by various tree species. "In an earlier study we found that trees pursue different strategies during their development, and those strategies can be classified according to two independent criteria," lead study author Nadja RĂ¼ger, a scientist with the German Center for Integrative Biodiversity Research, told UPI. Some tree species, scientists found, grow fast and die young. Other species grow slow and reach old age. Different tree species also achieve different statures. Fertility also influences a trees' development pattern. Some trees g
Climate change: Will planting millions of trees really save the planet?

Climate change: Will planting millions of trees really save the planet?

Science
From Greta Thunberg to Donald Trump and airlines to oil companies, everyone is suddenly going crazy for trees. The UK government has pledged to plant millions a year while other countries have schemes running into billions. But are these grand ambitions achievable? How much carbon dioxide do trees really pull in from the atmosphere? And what happens to a forest, planted amid a fanfare, over the following decades?How many will the UK plant?Last year's...