As per a report from the Arizona University, the impact of meteorite owing to which dinosaurs were doomed 66 million years ago razed the evergreens among flowering plants to a greater extent as compared to deciduous peers, as per a study led by the UA researchers.
The complete results of this research appear in the PLOS Biology Journal. With the application of biomechanical formulas to a hoard of thousands of fossilized leaves of angiosperms or flowering plants, apart from conifers, the ecology of a diverse plant community that thrived during a 2.2 million year period straddling the cataclysmic impact event was reconstructed by the UA team.
Researchers found indications like the fast growing deciduous angiosperms largely replacing their slow-growing evergreen peers. Examples of evergreen angiosperms like ivy and holly prefer shade, possess dark colored leaves and don’t grow very fast.
Benjamin Blonder, the lead author of the study said that “When you look at forests around the world today, you don’t see many forests dominated by evergreen flowering plants. Instead, they are dominated by deciduous species, plants that lose their leaves at some point during the year.”
Much needed evidence is provided by the study as to how this extinction event unfolded in the plant communities at that time. While it was understood that the species of plant that existed prior to the impact were different from those that came after, data was limited on whether the shift in assemblages of plant was a direct result of the event or was a random phenomenon.