Next Article in Journal
Buds, Bugs and Bienniality: The Floral Biology of Eschweilera tenuifolia (O. Berg) Miers in a Black-Water Flooded Forest, Central Amazonia
Next Article in Special Issue
Evidences of Different Drought Sensitivity in Xylem Cell Developmental Processes in South Siberia Scots Pines
Previous Article in Journal
The Application of Oak Bark Powder as a Filler for Melamine-Urea-Formaldehyde Adhesive in Plywood Manufacturing
Previous Article in Special Issue
Linkages between Climate, Radial Growth and Defoliation in Abies pinsapo Forests from Southern Spain
 
 
Article

Relating Climate, Drought and Radial Growth in Broadleaf Mediterranean Tree and Shrub Species: A New Approach to Quantify Climate-Growth Relationships

1
Pyrenean Institute of Ecology (IPE-CSIC), 50192 Zaragoza, Spain
2
Departamento de Sistemas y Recursos Naturales, Escuela Técnica Superior de Ingeniería de Montes, Forestal y del Medio Natural, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Forests 2020, 11(12), 1250; https://doi.org/10.3390/f11121250
Received: 30 October 2020 / Revised: 17 November 2020 / Accepted: 23 November 2020 / Published: 25 November 2020
(This article belongs to the Special Issue Dendroecological Wood Anatomy and Xylogenesis)
The quantification of climate–growth relationships is a fundamental step in tree-ring sciences. This allows the assessment of functional responses to climate warming, particularly in biodiversity and climate-change hotspots including the Mediterranean Basin. In this region, broadleaf tree and shrub species of pre-Mediterranean, subtropical origin, have to withstand increased aridification trends. However, they have not been widely studied to assess their long-term growth responses to climate and drought. Since these species evolved under less seasonal and wetter conditions than strictly Mediterranean species, we hypothesized that their growth would mainly respond to higher precipitation and water availability from spring to early summer. Here, we quantified climate–growth relationships in five of these broadleaf species showing different leaf phenology and wood type (Pistacia terebinthus L., Pistacia lentiscus L., Arbutus unedo L., Celtis australis L., and Laurus nobilis L.) by using dendrochronology. We calculated Pearson correlations between crossdated, indexed, mean ring width series of each species (chronologies) and monthly climate variables (mean temperature, total precipitation). We also calculated correlations between the species’ chronologies and a drought index on 7-day scales. Lastly, we compared the correlation analyses with “climwin” analyses based on an information-theoretic approach and subjected to cross-validation and randomization tests. As expected, the growth of all species was enhanced in response to wet and cool conditions during spring and early summer. In some species (P. lentiscus, A. unedo, C. australis,) high prior-winter precipitation also enhanced growth. Growth of most species strongly responded to 9-month droughts and the correlations peaked from May to July, except in L. nobilis which showed moderate responses. The “climwin” analyses refined the correlation analyses by (i) showing the higher explanatory power of precipitation (30%) vs. temperature (7%) models, (ii) selecting the most influential climate windows with June as the median month, and (iii) providing significant support to the precipitation model in the case of P. terebinthus confirming that the radial growth of this species is a robust proxy of hydroclimate variability. We argue that “climwin” and similar frameworks based on information-theoretic approaches should be applied by dendroecologists to critically assess and quantify climate–growth relationships in woody plants with dendrochronological potential. View Full-Text
Keywords: climwin; dendrochronology; dendroclimatology; drought; Arbutus unedo; Laurus nobilis; Mediterranean; Pistacia lentiscus; Pistacia terebinthus; Standardized Precipitation-Evapotranspiration Index; tree rings climwin; dendrochronology; dendroclimatology; drought; Arbutus unedo; Laurus nobilis; Mediterranean; Pistacia lentiscus; Pistacia terebinthus; Standardized Precipitation-Evapotranspiration Index; tree rings
Show Figures

Figure 1

MDPI and ACS Style

Camarero, J.J.; Rubio-Cuadrado, Á. Relating Climate, Drought and Radial Growth in Broadleaf Mediterranean Tree and Shrub Species: A New Approach to Quantify Climate-Growth Relationships. Forests 2020, 11, 1250. https://doi.org/10.3390/f11121250

AMA Style

Camarero JJ, Rubio-Cuadrado Á. Relating Climate, Drought and Radial Growth in Broadleaf Mediterranean Tree and Shrub Species: A New Approach to Quantify Climate-Growth Relationships. Forests. 2020; 11(12):1250. https://doi.org/10.3390/f11121250

Chicago/Turabian Style

Camarero, J. Julio, and Álvaro Rubio-Cuadrado. 2020. "Relating Climate, Drought and Radial Growth in Broadleaf Mediterranean Tree and Shrub Species: A New Approach to Quantify Climate-Growth Relationships" Forests 11, no. 12: 1250. https://doi.org/10.3390/f11121250

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

Article Access Map by Country/Region

1
Back to TopTop