LODEX : sémantisation & visualisation

Site exemple

Title

Stand structure modulates the long-term vulnerability of Pinus halepensis to climatic drought in a semiarid Mediterranean ecosystem

Publication Year

2012

Author(s)
  • Moreno-Gutierrez, Cristina
  • Battipaglia, Giovanna
  • Cherubini, Paolo
  • Saurer, Matthias
  • Nicolas, Emilio
  • Contreras, Sergio
  • Ignacio Querejeta, Jose
Source
PLANT CELL AND ENVIRONMENT Volume: 35 Issue: 6 Pages: 1026-1039 Published: 2012
ISSN
0140-7791
Abstract

We investigated whether stand structure modulates the long-term physiological performance and growth of Pinus halepensis Mill. in a semiarid Mediterranean ecosystem. Tree radial growth and carbon and oxygen stable isotope composition of latewood (d13CLW and d18OLW, respectively) from 1967 to 2007 were measured in P. halepensis trees from two sharply contrasting stand types: open woodlands with widely scattered trees versus dense afforested stands. In both stand types, tree radial growth, delta C-13(LW) and delta O-18(LW) were strongly correlated with annual rainfall, thus indicating that tree performance in this semiarid environment is largely determined by inter-annual changes in water availability. However, trees in dense afforested stands showed consistently higher delta O-18(LW) and similar delta C-13(LW) values compared with those in neighbouring open woodlands, indicating lower stomatal conductance and photosynthesis rates in the former, but little difference in water use efficiency between stand types. Trees in dense afforested stands were more water stressed and showed lower radial growth, overall suggesting greater vulnerability to drought and climate aridification compared with trees in open woodlands. In this semiarid ecosystem, the negative impacts of intense inter-tree competition for water on P. halepensis performance clearly outweigh potential benefits derived from enhanced infiltration and reduced run-off losses in dense afforested stands.

Author Keyword(s)
  • d13C
  • d18O
  • climate change
  • competition
  • plant-climate interactions
  • stomatal conductance
  • tree-ring
  • water use efficiency
KeyWord(s) Plus
  • OXYGEN-ISOTOPE SIGNALS
  • TREE MORTALITY-RATES
  • STABLE OXYGEN
  • PHYSIOLOGICAL PROCESSES
  • WATER RELATIONS
  • GROWTH DECLINE
  • UNITED-STATES
  • LOBLOLLY-PINE
  • GAS-EXCHANGE
  • RING WIDTH
ESI Discipline(s)
  • Plant & Animal Science
Web of Science Category(ies)
  • Plant Sciences
Adress(es)

[Moreno-Gutierrez, Cristina; Nicolas, Emilio; Contreras, Sergio; Ignacio Querejeta, Jose] Ctr Edafol & Biol Aplicada Segura CEBAS CSIC, Murcia 30100, Spain; [Battipaglia, Giovanna] Ecole Prat Hautes Etud, Paleoenvironm & Chronoecol PALECO EPHE, Inst Bot, F-34090 Montpellier, France; [Battipaglia, Giovanna] Univ Montpellier 2, Inst Bot, Ctr Bioarcheol & Ecol, UMR5059, F-34090 Montpellier, France; [Moreno-Gutierrez, Cristina; Battipaglia, Giovanna; Cherubini, Paolo] WSL Swiss Fed Inst Forest Snow & Landscape Res, CH-8903 Birmensdorf, Switzerland; [Saurer, Matthias] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

Reprint Adress

Moreno-Gutierrez, C (reprint author), Ctr Edafol & Biol Aplicada Segura CEBAS CSIC, Campus Univ Espinardo,POB 164, Murcia 30100, Spain.

Country(ies)
  • France
  • Spain
  • Switzerland
CNRS - Adress(es)
  • Centre de bio-archéologie et d'écologie (CBAE), UMR5059
Accession Number
WOS:000303052500002
uid:/JN9XW9XQ
Powered by Lodex 8.18.5