The diversity of species living on the planet has NOT increased since the death of dinosaurs, studies from 30,000 places worldwide
- Scientists believed that biodiversity had increased over millions of years
- The number of species has increased in sporadic outbreaks have increased
- The number of species in different ecosystems has been around for 'tens of millions of years' & # 39; Not Increased
- The results may shed light on the impact of the decline in biodiversity rates observed throughout the world today
The diversity of terrestrial species has remained the same for 60 million years after the extinction of dinosaurs, according to new research.
The fossil record shows a rapid increase in biodiversity, followed by stability plateaus of tens of millions of years.
Previously, experts believed that biodiversity had been steadily increasing over time, but researchers are not saying so now.
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. The biodiversity on earth has remained the same for 60 million years after the extinction of the dinosaurs. The impression of this artist shows top biodiversity values (from left to right) 300, 110 and 15 million years ago. This rapid increase in biodiversity was followed by plateaus of stability of species numbers that lasted tens of millions of years
University of Birmingham researchers analyzed 200 years of finds from 30,000 fossil sites around the world.
They found the average numbers The number of terrestrial vertebrates around the world had not increased for decades.
Their findings suggest that the creation of new species and the extinction of rats on land find a natural balance that is 'tens of millions of years'. ongoing.
The author of the lead study Roger Close said, "Scientists often believe that biodiversity has increased unchecked over millions of years and that diversity today is much greater than in the distant past."
"Our research shows that this is the case." The number of species in terrestrial communities is limited over long periods of time, which contradicts the results of many experiments in modern ecological communities – now we have to understand why.
"Contrary to what you might expect, the diversity within the terrestrial vertebrates is the strongest communities after the mass extinction that extinguished the dinosaurs 66 million years ago at the end of the Cretaceous Period.
"Within a few million years, local diversity had risen to two or three times the prominence levels – driven primarily by the spectacular success of modern mammals. & # 39;
The rich biodiversity level has remained the same over the last 60 million years after the extinction of the dinosaurs, new research suggests. According to a new study, the number of species in ecological communities on land has increased only sporadically over time (image)
Biodiversity describes the rich diversity of life on earth, from individual species to entire ecosystems.
The term was coined in 1985 – a shrinking of "biodiversity" – but the looming global biodiversity loss is a crisis that is climate change-driven and may outperform climate change.
In the latest study, experts focused on data from terrestrial animals, which date back to the earliest appearance of this group nearly 400 million years ago.
They culminated in biodiversity 300, 110, and 15 million years ago, followed by plateaus of stability in species numbers that lasted tens of millions of years.
The new findings shed light on our understanding of the impact of declining biodiversity rates that can be observed worldwide today.
The results also suggest that interactions between species, including competition for food and space, limit the total number of species that can coexist.
The full results of the study were published in Nature Ecology & Evolution. [19659033WARMWORTHDESINOSAURSEXTINCT?
Dinosaurs ruled and ruled the earth about 66 million years ago, before suddenly dying out.
The Cretaceous-Tertiary extinction is the name for this mass extinction.
It has been believed for many years that the changing climate destroyed the food chain of the giant reptiles.
In the 1980s, paleontologists discovered a layer of iridium.
This is an element that is rare on earth, but occurs in large quantities in space.
When this was dated, it coincided exactly with the time when the dinosaurs disappeared from the fossil record.
A decade later, scientists discovered the massive Chicxulub crater at the tip of the Mexican Yucatán Peninsula, dating back to the period in question.
Scientific consensus now says that these two factors are interrelated and both were probably caused by a tremendous asteroid.
With the projected size and impact speed, the collision would have caused a tremendous shockwave and probably triggered seismic activity.
The rainfall would have produced ash clouds that probably covered the entire planet and prevented the dinosaurs from surviving.
Other animals and plant species had a shorter intergenerational period, allowing them to survive.
There are several other theories about what caused the death of the famous animals.
An early theory was that small mammals ate dinosaur eggs, and another suggests that toxic angiosperms (flowering plants) killed them.