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.

Demographic Studies of a Dioecious Tree. II. The Distribution of Leaf Predation Within and Between Trees

M. C. Alliende
Journal of Ecology
Vol. 77, No. 4 (Dec., 1989), pp. 1048-1058
DOI: 10.2307/2260822
Stable URL: http://www.jstor.org/stable/2260822
Page Count: 11
  • Read Online (Free)
  • Download ($18.00)
  • 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.
Demographic Studies of a Dioecious Tree. II. The Distribution of Leaf Predation Within and Between Trees
Preview not available

Abstract

(1) The extent of damage to the leaves of Salix cinerea was determined in two successive years in a naturally established population in Anglesey, North Wales. The effects of sexual state (male, female or juvenile), flowering intensity, canopy shade, compass orientation of the trees, specific leaf weight and nearest-neighbour distance were examined. (2) There were significant differences between the intensity of predation in the two years of the study. The major cause of damage to the leaves was predation by insects. (3) Leaves on male trees suffered more damage than those on females or juveniles. Leaves in shaded portions of the canopy suffered more damage than those in unshaded parts, but the compass orientation of the branches had no effect. (4) The intensity of flowering had significant though complex effects on the degree of predation suffered by the leaves.

Page Thumbnails

  • Thumbnail: Page 
1048
    1048
  • Thumbnail: Page 
1049
    1049
  • Thumbnail: Page 
1050
    1050
  • Thumbnail: Page 
1051
    1051
  • Thumbnail: Page 
1052
    1052
  • Thumbnail: Page 
1053
    1053
  • Thumbnail: Page 
1054
    1054
  • Thumbnail: Page 
1055
    1055
  • Thumbnail: Page 
1056
    1056
  • Thumbnail: Page 
1057
    1057
  • Thumbnail: Page 
1058
    1058