Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Numerical Analysis of Rodent Distributional Patterns in Zacatecas, México

John O. Matson
Journal of Mammalogy
Vol. 63, No. 1 (Feb., 1982), pp. 73-84
DOI: 10.2307/1380673
Stable URL: http://www.jstor.org/stable/1380673
Page Count: 12
  • Read Online (Free)
  • Download ($42.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Numerical Analysis of Rodent Distributional Patterns in Zacatecas, México
Preview not available

Abstract

Rodent distributional patterns in the state of Zacatecas, Mexico, were analyzed by cluster and factor techniques. Forty-six species and five environmental variables were recorded from 57 quadrats within the state. Three separate indices of association between quadrats produced four major clusters in common to each that represented major ecogeographic units in the state: Desert, Grassland, Montane, and Tropical. Factor analysis defined or refined the same four ecogeographic units. Factor I separated a Desert fauna from a Grassland fauna. Factor II defined the Montane fauna. Factor III was associated with desert mountain ranges. Factor IV was associated with tropical canyons. Factor V defined a Desert-Grassland ecotone. Factor VI was associated with southern tropical canyons. Factor VII was associated with mesic habitats. A synthesis of the results of the two techniques produced five Rodent Faunal Areas.

Page Thumbnails

  • Thumbnail: Page 
73
    73
  • Thumbnail: Page 
74
    74
  • Thumbnail: Page 
75
    75
  • Thumbnail: Page 
76
    76
  • Thumbnail: Page 
77
    77
  • Thumbnail: Page 
78
    78
  • Thumbnail: Page 
79
    79
  • Thumbnail: Page 
80
    80
  • Thumbnail: Page 
81
    81
  • Thumbnail: Page 
82
    82
  • Thumbnail: Page 
83
    83
  • Thumbnail: Page 
84
    84