Allelopathic effects and root distribution of Ceratiola ericoides (Empetraceae) on seven rosemary scrub species

Molly E. Hunter, Eric S. Menges

Research output: Contribution to journalArticle

44 Scopus citations

Abstract

We studied the root distribution and the effects of leachates from the dominant shrub in rosemary scrub, Florida rosemary (Ceratiola ericoides), on germination of seven subordinate rosemary scrub species. For rosemary scrub specialists, (Eryngium cuneifolium and Hypericum cumulicola), germination was suppressed by the leaf and litter leachates. For species that are not found exclusively in rosemary scrub (Liatris ohlingerae, Polygonella basiramia, Paronychia chartacea, and Palofoxia feayi) litter and leaf leachate did not suppress germination significantly. Species limited to gaps in rosemary scrub (E. cuneifolium, H. cumulicola, and Lechea deckertii) showed reduced germination from rosemary leachates while species not limited to rosemary-free gaps (L. ohlingerae and P. feayi) were not affected by rosemary leachates. Rosemary root abundance was greatest near shrubs, at a shallow depth, and at sites not recently burned. As rosemary scrub patches age, rosemary roots are more likely to interact with herbaceous species in gaps.

Original languageEnglish (US)
Pages (from-to)1113-1118
Number of pages6
JournalAmerican Journal of Botany
Volume89
Issue number7
DOIs
StatePublished - Jan 1 2002
Externally publishedYes

Keywords

  • Allelopathy
  • Ceratiola
  • Empetraceae
  • Fire
  • Florida, USA
  • Rosemary scrub

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Genetics
  • Plant Science

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