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 need an accessible version of this item please contact JSTOR User Support

Red Crabs in Rain Forest, Christmas Island: Differential Herbivory of Seedlings

Dennis J. O'Dowd and P. S. Lake
Oikos
Vol. 58, No. 3 (Aug., 1990), pp. 289-292
Published by: Wiley on behalf of Nordic Society Oikos
DOI: 10.2307/3545219
Stable URL: http://www.jstor.org/stable/3545219
Page Count: 4
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
Red Crabs in Rain Forest, Christmas Island: Differential Herbivory of Seedlings
Preview not available

Abstract

Red land crabs (Gecarcoidea natalis), at densities up to 2.6 m-2 on the rain forest floor on Christmas Island, Indian Ocean, are important herbivores and predators of seedlings of trees and vines. In short-term exclosure experiments during the wet season with transplanted seedlings of 18 species, red crabs were the only important herbivore and selectively consumed seedlings of some species. Increasing concentrations of nitrogen, neutral detergent fiber, and total phenolics were correlated with decreased rates of grazing by red crabs. Our results extend observations of seed predation by land crabs on oceanic islands to the seedling stage and indicate that differential herbivory by land crabs may influence the relative abundance and species composition of plants in the early phases of establishment on this and other oceanic islands.

Page Thumbnails

  • Thumbnail: Page 
289
    289
  • Thumbnail: Page 
290
    290
  • Thumbnail: Page 
291
    291
  • Thumbnail: Page 
292
    292