Research published in 2006 indicates that the specialized animals that formed complex ecosystems, with high biodiversity, complex food webs and a variety of niches, took much longer to recover.
Istraživanje objavljeno 2006. ukazuje da je specijaliziranim životinjama koje su tvorile složenije ekosustave, sa visokom bioraznolikošću, trebalo dugo dok se nisu oporavile.