Next Article in Journal
Nonlinear Simultaneous Equations for Individual-Tree Diameter Growth and Mortality Model of Natural Mongolian Oak Forests in Northeast China
Next Article in Special Issue
Adaptation of Leaf Water Relations to Climatic and Habitat Water Availability
Previous Article in Journal
Effect of Climate Change Projections on Forest Fire Behavior and Values-at-Risk in Southwestern Greece
Previous Article in Special Issue
Modeling of Two Different Water Uptake Approaches for Mono- and Mixed-Species Forest Stands
Article Menu

Export Article

Open AccessArticle
Forests 2015, 6(6), 2241-2260; doi:10.3390/f6062241

Regulation of Water Use in the Southernmost European Fir (Abies pinsapo Boiss.): Drought Avoidance Matters

1
Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide. Ctra. Utrera km. 1, 41013 Sevilla, Spain
2
Biodiversidad y Conservación, Universidad Rey Juan Carlos, c/Tulipán s/n, 28933 Móstoles (Madrid), Spain
3
Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Ed. B3, Paraje las Lagunillas s/n, 23071 Jaén, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Steven Jansen
Received: 15 April 2015 / Revised: 9 June 2015 / Accepted: 16 June 2015 / Published: 19 June 2015
(This article belongs to the Special Issue Responses of Forest Trees to Drought)
View Full-Text   |   Download PDF [1461 KB, uploaded 24 June 2015]   |  

Abstract

The current scenario of global warming has resulted in considerable uncertainty regarding the capacity of forest trees to adapt to increasing drought. Detailed ecophysiological knowledge would provide a basis to forecast expected species dynamics in response to climate change. Here, we compare the water balance (stomatal conductance, xylem water potential, needle osmotic adjustment) of Abies pinsapo, a relict drought-sensitive Mediterranean fir, along an altitudinal gradient. We related these variables to soil water and nutrient availability, air temperature, atmospheric water potential, and vapour pressure deficit during two consecutive years. Our results indicate that A. pinsapo closed stomata rapidly over a very narrow range of soil water availability and atmospheric dryness. This isohydric response during water stress suggests that this relict conifer relied on the plant hormone abscisic acid to maintain closed stomata during sustained drought, instead of needle desiccation to passively drive stomatal closure, needle osmotic adjustment or a plastic response of the xylem to different levels of water availability. Both the soil and foliar nutrient contents suggest that the studied populations are not limited by nutrient deficiencies, and drought was stronger in the warmer low-elevation areas. View Full-Text
Keywords: Abies pinsapo; altitudinal gradient; soil nutrients; vapour pressure deficit; stomatal conductance; twig growth; xylem water potential Abies pinsapo; altitudinal gradient; soil nutrients; vapour pressure deficit; stomatal conductance; twig growth; xylem water potential
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Sánchez-Salguero, R.; Ortíz, C.; Covelo, F.; Ochoa, V.; García-Ruíz, R.; Seco, J.I.; Carreira, J.A.; Merino, J.Á.; Linares, J.C. Regulation of Water Use in the Southernmost European Fir (Abies pinsapo Boiss.): Drought Avoidance Matters. Forests 2015, 6, 2241-2260.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Forests EISSN 1999-4907 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top