You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis 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.
Small Mammal Populations in Woodlot Islands
Bradley M. Gottfried
The American Midland Naturalist
Vol. 102, No. 1 (Jul., 1979), pp. 105-112
Published by: The University of Notre Dame
Stable URL: http://www.jstor.org/stable/2425071
Page Count: 8
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.
Preview not available
Ten woodlot islands (surrounded by cornfields) which varied in size and isolation were compared with mainland habitats (forests over 30 ha in area) to test predictions of MacArthur and Wilson's model of island biogeography. Mainland communities contained significantly more small mammal species in higher densities than did the islands. The number of species on an island was positively related to its size. Islands contained significantly lower densities of Peromyscus leucopus than mainlands, although the sex ratios and age ratios did not differ significantly. Density of P. leucopus on islands was inversely related to isolation. Small isolated islands were usually populated by few subadult males. No relationship was found between island isolation or size and weight of P. leucopus. The study supports several predictions of the MacArthur and Wilson model.
The American Midland Naturalist © 1979 The University of Notre Dame