“…For example, the inclusion or exclusion of empty islands (Dengler, ; Wang, Millien, & Ding, ; Wang et al, ) or the choice of the mathematical model may affect the detection rate of SIEs considerably (Chisholm et al, ; Dengler, ; Gentile & Argano, ; Lomolino, ; Matthews, Steinbauer, Tzirkalli, Triantis, & Whittaker, ). Overall, the SIE appears to be a common feature of small‐island systems worldwide (Chisholm et al, ; Wang et al, ). However, the wealth of explanations and analytical considerations behind the SIE indicate that no consensus exists about its underlying processes.…”