Local variability of serotinous cones in a Canary Island pine (Pinus canariensis) stand

López de Heredia Larrea, Unai and Lopez Rodriguez, Rosana and Guzmán Delgado, Paula and Nanos, Nikolaos and García del Rey, Eduardo and Gil, Pascual and Gil Sanchez, Luis Alfonso (2011). Local variability of serotinous cones in a Canary Island pine (Pinus canariensis) stand. In: "4th International Conference of Mediterranean Pines", 06/06/2011 - 10/06/2011, Aviñón, Francia.

Description

Title: Local variability of serotinous cones in a Canary Island pine (Pinus canariensis) stand
Author/s:
  • López de Heredia Larrea, Unai
  • Lopez Rodriguez, Rosana
  • Guzmán Delgado, Paula
  • Nanos, Nikolaos
  • García del Rey, Eduardo
  • Gil, Pascual
  • Gil Sanchez, Luis Alfonso
Item Type: Presentation at Congress or Conference (Poster)
Event Title: 4th International Conference of Mediterranean Pines
Event Dates: 06/06/2011 - 10/06/2011
Event Location: Aviñón, Francia
Title of Book: Proceedings of 4th International Conference of Mediterranean Pines
Date: 2011
Subjects:
Faculty: E.T.S.I. Montes (UPM)
Department: Silvopascicultura [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The endemic Canary Island pine (Pinus canariensis) has an effective strategy to counteract fire disturbance in the short term. It has a mixed strategy that combines the presence of serotinous cones and thick barks with the ability to re-sprout from the trunk after a fire, a rare trait in pine species. High frequency of fires in the Canary Islands is related to human action, as natural fires by lightning or vulcan activity have very low frequency; hence, the how and whys of the presence of serotinous cones in the species is still a topic of debate. Previous studies showed that the frequency of serotinous cones varies from stand to stand. Here, we analyzed the presence of serotinous cones at a local scale. We selected a Canary Island pine stand in the transition zone between dry and humid forests in the south of Tenerife. Branches were pruned from 20 trees in order to evaluate the presence of serotinous vs. non-serotinous cones by direct verticile counting on the branches. The opening temperature of serotinous cones was assessed in the laboratory. Percentages of serotinous vs. non-serotinous cones varied from 0 to 93 %, showing high variability between trees. Opening temperatures were very high (above 65 ºC) as compared to other Mediterranean pine species with serotinous cones

More information

Item ID: 12571
DC Identifier: http://oa.upm.es/12571/
OAI Identifier: oai:oa.upm.es:12571
Deposited by: Memoria Investigacion
Deposited on: 04 Sep 2012 07:50
Last Modified: 10 Jan 2019 13:00
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