Relative size to resprouters determines post-fire recruitment of non-serotinous pines
MetadataShow full item record
The persistence of non-serotinous pines in Mediterranean forests can be threatened by climate-mediated changes in fire regimes that may favor the dominance of resprouters or other fire-adapted species. Recovery of non-serotinous pines after large wildfires is often determined by their ability to grow under the canopy of promptly established resprouters. Mechanisms of facilitation or competition between resprouters and pines will thus have a profound effect on forest dynamics. We examined here the effect of neighboring oak resprouts on Pinus nigra Arn. ssp. salzmannii saplings 18 years after a wildfire. We determined the net outcome of interactions between oaks and pines and how they vary with the life stage and size of the interacting plants or the environmental conditions. We did not find any net facilitative effects of oaks on pine sapling growth. The sensitivity of pines to neighbors varied markedly with pine size, and to a lesser extent, with water availability during the growing season. Our findings suggest a self-reinforcing hierarchical process by which early-dispersed seedlings growing in low-competitive microsites can grow faster, mitigating neighboring competition in the later stage of canopy closure. These results entail a potentially critical role of management practices to promote post-fire recovery of non-serotinous pines under expected changing conditions of disturbance regimes.
Is part ofForest Ecology and Management, 2018, vol. 429, p. 300-307
European research projects
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Resistance, resilience or change: post-disturbance dynamics of boreal forests after insect outbreaks Sánchez Pinillos, Martina; Leduc, Alain; Améztegui González, Aitor; Kneeshaw, Daniel; Lloret, Francisco; Coll Mir, Lluís (Springer, 2019)Understanding and measuring forest resistance and resilience have emerged as key priorities in ecology and management, particularly to maintain forest functioning. The analysis of the factors involved in a forest’s ability ...
Unraveling the role of light and biotic interactions on seedling performance of four Pyrenean species along environmental gradients Améztegui González, Aitor; Coll Mir, Lluís (Elsevier, 2013)The predicted upward displacement of forest species due to climate warming is expected to be modulated by a medley of abiotic and biotic factors acting at microsite level. Species-specific differences in plant responses ...
Modelling the effect of climate-induced changes in recruitment and juvenile growth on mixed-forest dynamics: the case of montane-subalpine Pyrenean ecotones Améztegui González, Aitor; Coll Mir, Lluís; Messier, Christian (Elsevier, 2015)Most predictive models forecast significant upward displacement of forest species due to increases in temperatures, but not all the species respond in the same way to changes in climate. In temperate or mountain systems, ...