Impact of a Century of Climate Change on Small-Mammal Communities in Yosemite National Park, USA

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Science  10 Oct 2008:
Vol. 322, Issue 5899, pp. 261-264
DOI: 10.1126/science.1163428

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  1. Fig. 1.

    Map of surveyed sites in Grinnell (Historic) and Current surveys relative to the Yosemite National Park boundary and life zones (upper panel), and to an averaged elevational profile (lower panel).

  2. Fig. 2.

    Example elevation plots from the west slope transect of up-ward range expansion (T. alpinus and P. truei) (A and C), and range collapse (N. cinerea) (B). Shown are occupied (black) and unoccupied (gray) sites, probability of false absence (Pfa), and model-averaged occupancy-elevation profiles (table S3 and fig. S2). P. truei colonized high elevations west of the Sierra crest from the eastern slope. Red marks for historical elevation profile of T. alpinus refer to ad hoc records.

  3. Fig. 3.

    (A) Summary of elevational range changes across all species in relation to life zones. Significant (Pfa < 0.05) shifts are colored green for range expansion and red for contraction (Table 1). Species were classified as “No Change” if range shifts were biologically trivial (<10% of previous elevation range) or of small magnitude (<100 m). (B) Comparison of changes in elevation-range limits for species that formerly had low- to mid-elevation versus mid- to high-elevation ranges (Table 1) across the transect. (C) Mean (± SE) estimates of species richness by era (bars: H, historic; P, present; see also table S4 and fig. S4) and community similarity (points) for individual life zones, Yosemite National Park, and the entire transect.

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