Fire regenerative syndromes of forest woody species across fire and climatic gradients.

摘要: Community resilience after fire is determined by species’ ability to regenerate through two main mechanisms growth of new sprouts (resprouter species) and germination from surviving seed banks or seeds arriving neighbouring populations (seeder species). Both the are present in Mediterranean communities. The occurrence both types a community depends on history bio-geographical determining available species pool. Regenerative traits also covary with other functional attributes associated resource acquisition stress tolerance. As post-fire regenerative responses can be related various ecological factors than fire, we tested hypothesis different proportional representation syndromes forest woody along climatic gradient Catalonia (NE Spain) ranging temperate-boreal climates. Specifically, expected seeder become less common colder moister conditions while resprouters would not so influenced gradient. We change relative abundance relation recent history. analysed large database obtained extensive forestry surveys remote sensing records. After correction for spatial autocorrelation, found an increase proportion under more decrease fire-sensitive (with no efficient recovery) conditions. Resprouter were similarly across whole A similar pattern was observed excluding recently burnt plots. Therefore, segregate Recent fires reduced increased species. No significant effect resprouter Fire has sorting effect, shaping traits. Overall, seems explain better variability climate In addition, (forestry practices covariation between attributes) likely contribute regional syndromes.