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.

Dispersal of Beech Nuts by Blue Jays in Fragmented Landscapes

W. Carter Johnson and Curtis S. Adkisson
The American Midland Naturalist
Vol. 113, No. 2 (Apr., 1985), pp. 319-324
DOI: 10.2307/2425577
Stable URL: http://www.jstor.org/stable/2425577
Page Count: 6
  • Read Online (Free)
  • 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.
Dispersal of Beech Nuts by Blue Jays in Fragmented Landscapes
Preview not available

Abstract

In September 1981, many thousands of green Fagus grandifolia nuts were dispersed by blue jays (Cyanocitta cristata) from a woodlot in southeastern Wisconsin and cached in their former breeding territories. Dispersal distances ranged up to 4 km. Jays dispersed an average of seven nuts per trip, with a range of 3-14. During dispersal trips, jays routinely followed wooded fencerows. This practice allowed for escape from avian predators whose migration coincided with the dispersal period. Jays selected the best nuts for dispersal, because all nuts recovered from jays were sound and most germinated in the laboratory. Only 11% of nuts on seed trees were sound. Dispersal by blue jays may be the primary means by which beech seeds are dispersed to patches of forest without beech trees and which are isolated by human land uses or by different natural habitats.

Page Thumbnails

  • Thumbnail: Page 
319
    319
  • Thumbnail: Page 
320
    320
  • Thumbnail: Page 
321
    321
  • Thumbnail: Page 
322
    322
  • Thumbnail: Page 
323
    323
  • Thumbnail: Page 
324
    324