The relative influence of change in habitat and climate on elevation range limits in small mammals in Yosemite National Park, California, U.S.A.

Table 2 Observed elevational ranges of small mammals in the 1 Yosemite transect [5] compared with predictions from SDMs using climate, habitat, and climate + habitat predictors thresholded using the MSSS rule

		Observed			Predicted – Climate			Predicted –Habitat			Predicted – Climate + Habitat
Elevation category	Species	Overall Range	Upper Limit	Lower Limit	Overall Range	Upper Limit	Lower Limit	Overall Range	Upper Limit	Lower Limit	Overall Range	Upper Limit	Lower Limit
High	Golden-mantled ground squirrel	−210 C	94 NS	304 U	−110 NS	0 NS	110 U	1642 E	696 U	−945 D	−110 C	0 NS	110 U
High	Lodgepole chipmunk	−30 NS	−26 NS	3 NS	−130 C	0 NS	130 U	489 E	−436 D	−925 D	228 E	0 NS	−228 D
High	Western jumping mouse	−323 C	−150 D	173 U	110 E	0 NS	−110 D	974 E	0 NS	−974 D	−961 C	0 NS	961 U
Low-High	Long-tailed vole	−670 C	−26 NS	644 U	−349 C	0 NS	349 U	−2042 C	134 U	2176 U	−21 C	497 U	518 U
Low	Brush mouse	224 NS	31 NS	−194 D	0 NS	0 NS	0 NS	3060 E	2529 U	−531 D	249 E	249 U	0 NS
Low-High	Deer mouse	−25 NS	−26 NS	−2 NS	1397 E	1397 U	0 NS	1917 E	1634 U	−283 D	1397 E	1397 U	0 NS
Low	California ground squirrel	147 NS	152 U	5 NS	−111 C	589 U	700 U	−2434 C	−1385 D	1049 U	−1049 C	0 NS	1049 U
Low	Western harvest mouse	−57 NS	−52 NS	5 NS	−575 C	−575 D	0 NS	NA	NA	NA	−227 C	−227 D	0 NS
	Total no. agreement				2/8	5/8	4/8	1/7	0/7	2/7	3/8	2/8	5/8

Shaded cells under the SDM columns indicate predictions that agree with the observed range trend. Total no. agreement corresponds to the number of times the SDMs agreed with occupancy modelling. Values represent modern minus historic range values. E – expand, NS – no shift, C – contract, D – downward, U – upward, and NA – not applicable, i.e., when there was no convergence towards a model solution because the samples were all outside estimated range limits so no model was produced

ISSN: 2053-7565