A recent study changes the view on the recovery of life after the asteroid impact 66 million years ago. The research indicates that new species of plankton emerged in the oceans within thousands of years, less than 2,000 in some cases. This points to a faster marine biodiversity reset than estimated, after the initial devastation of the event.
Sediment Core Analysis Techniques and Biomarkers 🔬
The conclusion is based on high-resolution analysis of marine sediment cores from the North Atlantic. Scientists used isotope dating techniques and the study of calcareous nannoplankton fossils to establish a detailed timeline. The use of specific lipid biomarkers, such as steranes, allowed tracking the reappearance of specific algal groups. This chronological precision is what reveals the speed of the post-impact evolutionary process.
The First to Recolonize the Planet Were Some Influencer Phytoplankton 💥
It seems that, after the cataclysm, the plankton didn't beat around the bush. While the large reptiles had left the stage, these microscopic life forms organized the most productive afterparty in history. Without building permits or paperwork, in a couple of millennia they already had new evolutionary models running. They demonstrated that, sometimes, a forced reset is just what the ecosystem needed to try more modern designs.