It seems that a sudden increase in oxygen levels more than 455 million years ago has caused biodiversity to grow exponentially, and nature has taken advantage of this sudden abundance of this essential gas to evolve and create new species of marine life.
The sudden growth of biodiversity was already well known, but never before was the reason for it to have started known, this being the first time scientists have been able to link the event to this now confirmed sudden increase in oxygen in the Earth’s atmosphere.
Of course the team believes that the exponential increase of oxygen in the atmosphere was not the exclusive event that made the increase of biodiversity possible as recorded during the Ordovician period, the team knows that there were other important factors that influenced this sudden increase, such as cooling of the oceans and the increase in nutrients available in them, as well as the need for subsistence in the face of the predatory threat, but certainly the increase of our essential gas was crucial.
Analysis of such a distant temporal phase is usually quite complicated, but the new link found after the analysis of the limestone constituted over time, which fossilized creatures in its structure, allowed a detailed analysis of these details, having confirmed that at this time the oxygen levels increased their concentration from 13 percent to a staggering 25 percent in the period.
At the same time, there was an increase in three times of the biodiversity, increasing the number of species in the oceans, major changes to existing species, and even changes in the soil level of the oceans themselves.
The specifics of the link between the two events is not so clear though, and scientists believe that the influence on ecosystems of this increase is much more indirect than direct, increasing temperatures, and thus making land more conducive to existence of life.