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| Content Provider | Springer Nature Link |
|---|---|
| Author | Morán López, T. Poyatos, R. Llorens, P. Sabaté, S. |
| Copyright Year | 2013 |
| Abstract | Drought-induced decline is affecting Pinus sylvestris populations in southern Europe, with very little impact on the more drought-tolerant Quercus pubescens. Although multiple studies have investigated interspecific differences in water use and growth strategies, the link between these two processes and how they vary within drought-exposed populations remains poorly understood. Here, we analysed tree ring and sap flow data from P. sylvestris and Q. pubescens stands in the Pyrenees in order to (1) evaluate differences in climate–growth responses among species, (2) disentangle the role of past growth trends and water use strategies in individual trees drought sensitivity and (3) assess whether such intraspecific patterns vary between species. Both species have suffered recent climatic constraints related to increased aridity. However, the effects of past growth trends and current water use traits on drought sensitivity varied among them. Initially, fast-growing ‘drought-sensitive’ pines displayed a higher gas exchange potential but were more sensitive to evaporative demand and soil moisture. They also showed lower water use efficiency for growth (WUEBAI) and current growth decline. In contrast, initially, slow-growing ‘drought-tolerant’ pines showed the opposite water use traits and currently maintain the highest growth rates. In comparison, neither current WUEBAI nor recent growth trends varied across Q. pubescens climate–growth groups. Nonetheless, ‘drought-sensitive’ oaks showed the lowest gas exchange potential and the highest growth rates under milder conditions. Our results show a strong effect of past growth trends and current water use strategies on tree resilience to increased aridity, which is more evident in P. sylvestris. |
| Starting Page | 369 |
| Ending Page | 382 |
| Page Count | 14 |
| File Format | |
| ISSN | 16124669 |
| Journal | Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch |
| Volume Number | 133 |
| Issue Number | 2 |
| e-ISSN | 16124677 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2013-12-17 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Climate–growth relationships Drought-induced decline Pinus sylvestris Quercus pubescens Sap flow Water use efficiency (WUE) Forestry Plant Sciences Plant Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science Forestry |
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