Next Article in Journal
Does the ‘One Map Initiative’ Represent a New Path for Forest Mapping in Indonesia? Assessing the Contribution of the REDD+ Initiative in Effecting Forest Governance Reform
Next Article in Special Issue
Relationship between Leaf Surface Characteristics and Particle Capturing Capacities of Different Tree Species in Beijing
Previous Article in Journal
Effects of Repeated Growing Season Prescribed Fire on the Structure and Composition of Pine–Hardwood Forests in the Southeastern Piedmont, USA
Previous Article in Special Issue
Foliage Chemistry of Pinus baksiana in the Athabasca Oil Sands Region, Alberta, Canada
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Forests 2017, 8(1), 13; doi:10.3390/f8010013

Analysing Atmospheric Processes and Climatic Drivers of Tree Defoliation to Determine Forest Vulnerability to Climate Warming

1
Pyrenean Institute of Ecology (IPE-CSIC), Avenida Montañana 1005, 50059 Zaragoza, Spain
2
Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Ctra. Utrera km. 1, 41013 Seville, Spain
3
Department of Ecology and Forest Genetics, INIA—Forest Research Center, Ctra. de la Coruña km 7.5, 28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Timothy A. Martin
Received: 31 October 2016 / Revised: 12 December 2016 / Accepted: 20 December 2016 / Published: 26 December 2016
(This article belongs to the Special Issue Forest Growth Response to Environmental Stress)
View Full-Text   |   Download PDF [3692 KB, uploaded 26 December 2016]   |  

Abstract

Crown defoliation is extensively monitored across European forests within the International Co-operative Programme (ICP) as a proxy of forest health. Climate warming and drought are assumed to be the major drivers of tree growth and crown defoliation, particularly in seasonally dry areas such as the Mediterranean Basin. Here we analyse how climate, drought, and atmospheric processes are related to defoliation time series of five oak and five pine species that are dominant across Spanish ICP monitoring forest plots. We found that warmer and drier conditions during April were linked to enhanced defoliation. Warm April conditions were also related to high values of the Atlantic Multi-decadal Oscillation (AMO), thereby indicating large-scale links between atmospheric processes, temperature, and defoliation patterns. The temperature-defoliation association was species-specific since some tree species from wet sites showed a weak association (e.g., Quercus robur L.) whereas others from dry sites (e.g., Quercus ilex L.) presented the strongest associations. The latter tree species could be considered vulnerable to heat stress in terms of leaf shedding. We also explored if defoliation was related to radial growth and found negative associations in relatively dry areas. Warmer and drier conditions linked to increasing AMO values are connected to the post-1990s rise of defoliation in Spanish ICP forest plots. Combined incorporation of defoliation and growth into mortality models can provide insights into assessments of forest vulnerability. View Full-Text
Keywords: Atlantic Multi-decadal Oscillation; climate warming; dendroecology; drought; ICP-Forests plots; needle fall; Spain; stress; oaks; pines Atlantic Multi-decadal Oscillation; climate warming; dendroecology; drought; ICP-Forests plots; needle fall; Spain; stress; oaks; pines
Figures

Figure 1

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).

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.; Camarero, J.J.; Grau, J.M.; de la Cruz, A.C.; Gil, P.M.; Minaya, M.; Fernández-Cancio, Á. Analysing Atmospheric Processes and Climatic Drivers of Tree Defoliation to Determine Forest Vulnerability to Climate Warming. Forests 2017, 8, 13.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

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