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001     864045
005     20210130002414.0
024 7 _ |a 10.3389/fpls.2019.00607
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037 _ _ |a FZJ-2019-03960
041 _ _ |a English
082 _ _ |a 570
100 1 _ |a Martín-Sanz, Ruth C.
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245 _ _ |a How Does Water Availability Affect the Allocation to Bark in a Mediterranean Conifer?
260 _ _ |a Lausanne
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520 _ _ |a Bark thickness is a key structural feature in woody plants in the protection against fire. We used 19 provenances of Pinus halepensis, an obligate-seeder species, in a replicated common garden at two environments contrasting in water availability to assess the interacting effects of site environment and population in the relative allocation to bark, expecting lower allocation at the drier site. Secondly, given the average fire frequency, we analyzed whether trees reached the critical absolute thickness soon enough for population persistence via aerial seed bank. Our analyses indicated that trees at the moister site allocated a rather fixed quantity of resources independent of tree size, and almost all populations reached critical absolute bark thickness to eventually survive fire. In contrast, at the drier site allocation to bark reduced with tree size, and most populations did not reach the critical bark thickness. Populations from areas with higher fire frequency had thicker basal bark, while those from areas with severe droughts and short vegetative periods, had thinner bark. In conclusion, drought-stressed trees have a higher risk to die from fires before achieving reproduction and building a sufficient aerial seed bank.
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700 1 _ |a San-Martín, Roberto
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700 1 _ |a Poorter, Hendrik
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700 1 _ |a Vázquez, Antonio
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700 1 _ |a Climent, José
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773 _ _ |a 10.3389/fpls.2019.00607
|g Vol. 10, p. 607
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|t Frontiers in Functional Plant Ecology
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856 4 _ |y OpenAccess
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