TABLE 6.
Performances of correction methods, reported as average of the five top models, for the real datasets (RD), in Qilianshan National Park (QLSNP) and Qomolangma National Nature Reserve (QMLNR). MTSS = Maximum training sensitivity plus specificity logistic threshold; MTSS om = omission rate for MTSS threshold. D represents Schoener's D (Schoener, 1968) niche overlap index, calculated for each ensemble and dataset with respect to FR_RAW ensemble of models (Full Random dataset, FR)
Dataset | Models | N | AUC | AUCdiff | MTSS | MTSS om | D | ΔDgeo |
---|---|---|---|---|---|---|---|---|
QLSNP | ||||||||
RD | QLSNP_RD_RAW | 393 | 0,858 | 0,008 | 0,398 | 0,271 | 0,810 | 0,000 |
QLSNP_RD_SR1200 | 219 | 0,837 | 0,009 | 0,415 | 0,272 | 0,841 | 0,166 | |
QLSNP_RD_SR2400 | 158 | 0,819 | 0,009 | 0,424 | 0,290 | 0,858 | 0,254 | |
QLSNP_RD_SR4800 | 103 | 0,766 | 0,023 | 0,443 | 0,421 | 0,892 | 0,433 | |
QLSNP_RD_SR9600 | 65 | 0,756 | 0,034 | 0,453 | 0,407 | 0,921 | 0,584 | |
QLSNP_RD_GK1200 | 393 | 0,860 | 0,009 | 0,417 | 0,268 | 0,822 | 0,066 | |
QLSNP_RD_GK2400 | 393 | 0,862 | 0,009 | 0,429 | 0,262 | 0,835 | 0,131 | |
QLSNP_RD_GK4800 | 393 | 0,863 | 0,009 | 0,448 | 0,255 | 0,860 | 0,267 | |
QLSNP_RD_GK9600 | 393 | 0,855 | 0,009 | 0,471 | 0,290 | 0,892 | 0,433 | |
QMLNR | ||||||||
RD | QMLNR_RD_RAW | 220 | 0,972 | 0,001 | 0,194 | 0,085 | 0,572 | 0,000 |
QMLNR_RD_SR1200 | 79 | 0,958 | 0,004 | 0,188 | 0,126 | 0,667 | 0,221 | |
QMLNR_RD_SR2400 | 49 | 0,943 | 0,007 | 0,212 | 0,115 | 0,780 | 0,486 | |
QMLNR_RD_SR4800 | 28 | 0,905 | 0,015 | 0,331 | 0,190 | 0,844 | 0,636 | |
QMLNR_RD_SR9600 | 19 | 0,904 | 0,015 | 0,316 | 0,150 | 0,759 | 0,437 | |
QMLNR_RD_GK1200 | 220 | 0,971 | 0,001 | 0,263 | 0,085 | 0,646 | 0,173 | |
QMLNR_RD_GK2400 | 220 | 0,971 | 0,001 | 0,321 | 0,085 | 0,699 | 0,297 | |
QMLNR_RD_GK4800 | 220 | 0,971 | 0,002 | 0,432 | 0,082 | 0,763 | 0,445 | |
QMLNR_RD_GK9600 | 220 | 0,968 | 0,002 | 0,501 | 0,081 | 0,768 | 0,457 |
ΔDgeo calculated using D overlap with FR_RAW ensemble of models (ΔDgeo=(Dcorrected‐Dbiased)/(1‐Dbiased); Fourcade et al., 2014). Values in bold represent improvement or equal performance with respect to the raw models. The model selected as the best correction (maximizing D, with positive ΔDgeo while reducing MTSS omission rate) is reported in bold and italic.