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Resist, recover or both? Growth plasticity in response to drought is geographically structured and linked to intraspecific variability in <italic>Pinus pinaster</italic>.

Authors :
Sánchez‐Salguero, Raúl
Camarero, J. Julio
Rozas, Vicente
Génova, Mar
Olano, José M.
Arzac, Alberto
Gazol, Antonio
Caminero, Leocadia
Tejedor, Ernesto
de Luis, Martín
Linares, Juan C.
Source :
Journal of Biogeography; May2018, Vol. 45 Issue 5, p1126-1139, 14p, 2 Charts, 4 Graphs, 2 Maps
Publication Year :
2018

Abstract

Abstract: Aim: We investigate the effects of the environmental and geographical processes driving growth resilience and recovery in response to drought in Mediterranean &lt;italic&gt;Pinus pinaster&lt;/italic&gt; forests. We explicitly consider how intraspecific variability modulates growth resilience to drought. Location: Western Mediterranean basin. Methods: We analysed tree rings from a large network of 48 forests (836 trees) encompassing wide ecological and climatic gradients, including six provenances. To characterize the major constraints of &lt;italic&gt;P. pinaster&lt;/italic&gt; growth under extremely dry conditions, we simulated growth responses to temperature and soil moisture using a process‐based growth model coupled with the quantification of climate–growth relationships. Then, we related growth–resilience indices to provenance and site variables considering different drought events. Results: &lt;italic&gt;Pinus pinaster&lt;/italic&gt; displayed strong variation in growth resilience across its distributional range, but common patterns were found within each provenance. Post‐drought resilience increased with elevation and drier conditions but decreased with spring precipitation. Trees from dry sites were less resistant to drought but recovered faster than trees from wet sites. Main conclusions: Resilience strategies differed among tree provenances: wet forests showed higher growth resistance to drought, while dry forests presented faster growth recovery, suggesting different impacts of climate warming on forest productivity. We detected geographically structured resilience patterns corresponding to different provenances, confirming high intraspecific variability in response to drought. This information should be included in species distribution models to simulate forest responses to climate warming and forecasted aridification. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03050270
Volume :
45
Issue :
5
Database :
Complementary Index
Journal :
Journal of Biogeography
Publication Type :
Academic Journal
Accession number :
129427006
Full Text :
https://doi.org/10.1111/jbi.13202