RT Journal Article SR Electronic T1 Malthusian Catastrophe: Species Extinction Caused by Oversized Population JF bioRxiv FD Cold Spring Harbor Laboratory SP 134221 DO 10.1101/134221 A1 Xubin Pan YR 2017 UL http://biorxiv.org/content/early/2017/05/07/134221.abstract AB There is one pseudo-extinction debt and four occurring conditions for real extinction debt. Since small and oversized populations have a high extinction risk, Pan threshold (upper limit) was calculated for Verhulst-Pear “logistic” growth model and logistic model with the Allee effect, an important parameter corresponding to Allee threshold (lower limit).