Memorias de investigación
Research Publications in journals:
Population differences in juvenile survival under increasing drought are mediated by seed size in cork oak (Quercus suber L.)
Year:2009

Research Areas
  • Plant physiology

Information
Abstract
Many studies have focused on the physiological and morphological responses of Quercus suber to high temperatures and summer drought. Nevertheless, our understanding of the potential of this species to cope with climate change is incomplete. An increase in severity, length and frequency of summer droughts is expected in the Iberian Peninsula over the 21st century. We investigated the potential of cork oak to adapt to climate change in a 4-year study comparing seedling survival from thirteen Spanish populations in a common garden. Acorn size was evaluated as a possible adaptive trait enhancing stress resistance during establishment. Populations originating from sites with the driest summers exhibited the highest survival rates under dry conditions. These populations were characterized by bigger acorns, suggesting selection for this trait across sites experiencing drought. Our findings reveal that northern populations are not well adapted to cope with increasing drought but suggest that they might cope well with the moderate drought increase expected for these zones. However, continental populations are intermediately adapted to dry conditions, while drastic and fast increases in summer droughts are expected to occur in these regions. This extensive and quick change will provide scant chances to adapt making the populations of cork oak in these regions particularly vulnerable to the future climatic conditions.
International
Si
JCR
Si
Title
FOREST ECOLOGY AND MANAGEMENT
ISBN
0378-1127
Impact factor JCR
2,11
Impact info
Volume
257
Journal number
8
From page
1676
To page
1683
Month
MARZO
Ranking
Participants
  • Participante: Jose Alberto Ramírez-Valiente INIA
  • Autor: Luis Alfonso Gil Sanchez UPM
  • Participante: Fernándo Valladares CSIC
  • Autor: Ismael Aranda García UPM

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Genética y Fisiología Forestal
  • Departamento: Silvopascicultura