To do this, researchers extract “mud cores” from the depths of lakes and swamps. These are long, tight
Scientists expected to see the first "signal" abouthuman intervention in the evolution of the planet several centuries ago, when landscapes began to transform during the industrial revolution. The pollen records obtained as a result of the study of cores made it possible to change this assumption and trace the first impact of our species on nature, which occurred 4 thousand years ago.
The researchers noted that this allows them to study in more detail the consequences of changes and their impact on forests and other natural landscapes.
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The evidence for these theories is the tinypollen grains that have fallen and settled in layers of mud over the centuries. By carefully removing this mud and analyzing the “fossil pollen” at different depths, the researchers were able to determine the carbon date of each layer of the mud to figure out what was growing and when.
The team found an increase in speed in the mudchanges in soil composition. They found that each layer began to differ from the other in terms of the pollen contained in it. Scientists decided to look 18 thousand years ago to cover the era when the planet began to emerge from the last ice age. The earth was thawing, so almost the entire environment changed.
“The last 10 thousandthe climate has been relatively stable for years, so [just then] we can sense human influences, ”said Suzette Flantois, an ecologist at the University of Bergen. "This influence began as soon as humans began to destroy wild vegetation to make way for themselves, their crops and livestock."
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