The trees are getting smaller! This is what a study published in Proceedings of the National Academy of Sciences found. Blame? Needless to say, it is climate change, which seems to be the determining factor
He is about to end up run over, his mother saves him
Not only do men's penis size decrease, even the trees are getting smaller! This is what a study published in Proceedings of the National Academy of Sciences found. Blame? Needless to say, it's from climate change, which seems to be the determining factor.
The number of the largest trees has decreased by 50 percent in the forests of California. No area was found to be immune, from the north coast to the Sierra Nevada mountains. And in some areas of the south of the state the decline was as much as 75 percent.
The loss was greatest in areas where the trees had suffered greater water deficit. Researchers estimated water stress with a computer model, taking into account precipitation, air temperature, soil moisture and timing of snow melt. Another cause could be that many of these trees they sprouted centuries ago when California's climate was colder.
As the number of large decreases, the number of smaller trees has soared across the state. And another sign that the climate is changing is that forests and oaks are replacing pines in large areas. The future looks tough for California's big trees. By 2100, the state's average temperature could rise, increasing water stress by 30 percent.
The loss of these trees has important implications. Beyond their romantic grandeur, large trees play an outsized ecological role. They produce more seeds, resist damage from fires, and absorb more CO2 than their smaller brothers; not to mention that rare animals such as owls and flying squirrels live in their cavities.
Meanwhile another study, this time conducted by researchers from the University of Minnesota and published in the journal Nature Climate Change, reveals that the more the temperature rises, the more the tree species that populate the forests change. In Canada, in particular, the effects of climate change were mainly fir and spruce, while oaks and maples seem to have resisted the rise in temperatures better.
Roberta Ragni
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