Reproductive success increases with local density of conspecifics in a desert mustard (Lesquerella fendleri)

  • Roll J
  • Mitchell R
  • Cabin R
 et al. 
  • 70

    Readers

    Mendeley users who have this article in their library.
  • 82

    Citations

    Citations of this article.

Abstract

We investigated the effects of plant density on reproduction for an insect-pollinated desert mustard (Lesquerella fendleri [Brassicaceae]). Individual reproductive success, as measured by seeds per fruit, proportion of flowers setting fruit, and total seed production, increased with the density of conspecifics within 1 m. However, including the density of conspecifics at greater distances (1-3 m) did not significantly increase the amount of variation in reproductive success explained by the regression model. This implies that processes occurring on a scale of 1 m or less have important effects on reproduction. Total seed production also was greater for high-density plants than for otherwise similar plants with a low-density of conspecifics. We argue that increased pollinator visilation is the most likely cause of this facilitation and that investigations of the effects of rarity on reproduction success should directly consider density along with more commonly used attributes such as population size and fragmentation.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free