Actually, many extinction events punctuated the Triassic, which are believed to have provided additional selective pressures fostering the dinosaur radiation into emptied niches. (fossilmuseum.net)
Climate fluctuations, whatever they may do via culling, also promote island formation and empty niches quite vigorously on occasion, and so may temporarily speed up the pace of evolution. (williamcalvin.com)
As the first evidence that within - youth improvements in self - efficacy has developmental benefits, our findings help fill a long empty niche in the line of studies investigating the impact of efficacy beliefs on depressive symptoms. (cambridge.org)