Functional traits and climate drive interspecific differences in disturbance‐induced tree mortality - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Global Change Biology Year : 2023

Functional traits and climate drive interspecific differences in disturbance‐induced tree mortality

Niko Kulha
Juha Honkaniemi
Mikko Peltoniemi
Kari Korhonen
Paloma Ruiz-Benito
Miguel Zavala

Abstract

With climate change, natural disturbances such as storm or fire are reshuffled, induc-ing pervasive shifts in forest dynamics. To predict how it will impact forest structure and composition, it is crucial to understand how tree species differ in their sensitivity to disturbances. In this study, we investigated how functional traits and species mean climate affect their sensitivity to disturbances while controlling for tree size and stand structure. With data on 130,594 trees located on 7617 plots that were disturbed by storm, fire, snow, biotic or other disturbances from the French, Spanish, and Finnish National Forest Inventory, we modeled annual mortality probability for 40 European tree species as a function of tree size, dominance status, disturbance type, and inten-sity. We tested the correlation of our estimated species probability of disturbance mortality with their traits and their mean climate niches. We found that different trait combinations controlled species sensitivity to disturbances. Storm-sensitive spe-cies had a high height-dbh ratio, low wood density and high maximum growth, while fire-sensitive species had low bark thickness and high P50. Species from warmer and drier climates, where fires are more frequent, were more resistant to fire. The rank-ing in disturbance sensitivity between species was overall consistent across distur-bance types. Productive conifer species were the most disturbance sensitive, while Mediterranean oaks were the least disturbance sensitive. Our study identified key relations between species functional traits and disturbance sensitivity, that allows more reliable predictions of how changing climate and disturbance regimes will impact future forest structure and species composition at large spatial scales.
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Dates and versions

hal-04032638 , version 1 (16-03-2023)

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Julien Barrere, Björn Reineking, Thomas Cordonnier, Niko Kulha, Juha Honkaniemi, et al.. Functional traits and climate drive interspecific differences in disturbance‐induced tree mortality. Global Change Biology, 2023, pp.1-16. ⟨10.1111/gcb.16630⟩. ⟨hal-04032638⟩
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