Document


Title

The relationships between lengthening capacity of seedlings and the post-fire germinative behaviour of six Cistus species
Document Type: Journal
Author(s): S. Chamorro-Moreno ; J. L. Rosua-Campos
Publication Year: 2004

Cataloging Information

Keyword(s):
  • Africa
  • Cistus spp.
  • ecosystem dynamics
  • fire management
  • forest management
  • heat effects
  • Mediterranean habitats
  • Morocco
  • post fire recovery
  • rockrose
  • seed germination
  • seedlings
  • shrubs
  • soil temperature
  • wildfires
Topic(s):
Region(s):
  • International
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 52613
Tall Timbers Record Number: 29775
TTRS Location Status: Not in file
TTRS Call Number: Available
TTRS Abstract Status: Okay, Fair use, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.

Description

Several thermal treatments simulating forest-fire effects were applied to the seeds of six Cistus species to ascertain both the maximum temperature endured, and the temperature interval needed to break their dormancy. The greatest lengthening capacity of the hypocotyls was also determined. Taking into account the typical temperatures reached in the soil profile during several forest-fire regimes, together with both the lengthening capacity of the hypocotyls, and the germinative behaviour after different thermal pulses of the seeds, we established a theoretical range of burying depth at which these seeds endure the pyrogenic heat pulse, break their dormancy, germinate, and emerge from the soil. For buried seeds, the data revealed three groups with different tolerance to forest fires: the cluster of C. crispus, C. ladanifer and C. monspeliensis, and the cluster of C. albidus and C. populifolius, which withstood thermal pulses of low and high intensity, respectively; and C. salvifolius, which withstood moderate-intensity heat pulses. The data analysis indicated that elongation capacity of the hypocotyls accounted for the above interspecific differences. In addition, some traits of the seeds as size, and capacity of dissemination away the mother-plant, together with soil texture and fire regime are discussed to in terms of the interspecific differences in post-fire colonization behaviour of these species.

Online Link(s):
Citation:
Chamorro-Moreno, S., and J. L. Rosua-Campos. 2004. The relationships between lengthening capacity of seedlings and the post-fire germinative behaviour of six Cistus species. Revue D Ecologie La Terre et La Vie, v. 59, no. 3, p. 409-424. http://www.ieceuties.org/ceuties/simon/03.pdf.