“…The elucidation of these biodiversity shortfalls is the first step to shed some light on ways to overcome the knowledge gaps and deal with their uncertainty (Hortal et al, 2015). In this way, the deficits were named to define best the research challenges and agenda, such as Linnean (taxonomic deficits), Wallacean (distribution deficits), Prestonian (abundance deficits), Darwinian (evolutionary patterns deficits), Hutchinsonian (abiotic tolerances gaps), Raunkiaeran (ecological traits deficits), Eltonian (biotic interactions deficits), and Haeckelian or Müllerian shortfalls (semaphoronts unknown) (Cardoso et al, 2011;Hortal et al, 2015;Calor and Quinteiro, 2017;Faria et al, 2020).…”