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 1 Small mammal species recorded and their ranges in the Yosemite transect, and observed elevation range dynamics from occupancy modelling from Moritz et al. (2008; note that some species names have changed since this publication)

	Species	Elevation category	Sample size	Historic Range (m)	Modern Range (m)	ΔRange (m)	Significance of change
Golden-mantled ground squirrel	Callospermophilus lateralis	High	H: n = 19; M: n = 35	1647 to 3161	1951 to 3255	−210	Contract
Lodgepole chipmunk	Tamias speciosus	High	H: n = 37; M: n = 46	1878 to 3281	1881 to 3255	−30	No shift
Western jumping mouse	Zapus princeps	High	H: n = 18; M: n = 27	1251 to 3281	1424 to 3131	−323	Contract
Long-tailed vole	Microtus longicaudus	Low-High	H: n = 28; M: n = 55	583 to 3281	1227 to 3255	−670	Contract
Brush mouse	Peromyscus boylii	Low	H: n = 19; M: n = 33	251 to 2464	57 to 2495	224	No shift
Deer mouse	Peromyscus maniculatus	Low-High	H: n = 34; M: n = 97	52 to 3281	50 to 3255	−25	No shift
California ground squirrel	Otospermophilus beecheyi	Low	H: n = 16; M: n = 17	52 to 2632	57 to 2784	147	No shift
Western harvest mouse	Reithrodontomys megalotis	Low	H: n = 15; M: n = 17	52 to 1068	57 to 1016	−57	No shift

Occupancy modelling based prediction of range expansions and contractions were considered the “true” range shifts. “H” and “M” indicate the historic (1911–1940) and modern (1971–2010) time periods. Sample size denotes the number of presences for each time period used to train the SDMs

ISSN: 2053-7565