Effect of novel predator on survival
When we assessed the impact of quolls on melomys survival between
trapping sessions the best supported model was one in which survival
rates between sessions were lower at quoll-invaded sites than at
quoll-free sites, and recapture rates were session-dependent (see Table
S3). All other models were more than 4 AIC units from this best model,
and so clearly inferior descriptions of the data. From the
best-supported model, estimates of apparent survival (S ) for the
intervals between the capture sessions were substantially higher at
quoll-free sites (S2017–2018 = 0.368;S2018–2019 = 0.225) than at quoll-invaded sites
(S2017–2018 = 0.207;S2018–2019 = 0.091; Fig. 2). The differing
survival probability between sessions is largely explained by the time
difference between intervals (2017–2018 = 9 months vs. 2018–2019 = 13
months; Fig. 3).