INVESTIGADORES
KITZBERGER Thomas
artículos
Título:
Low growth resilience to drought is related to future mortality risk in trees
Autor/es:
DESOTO, LUCÍA; CAILLERET, MAXIME; STERCK, FRANK; JANSEN, STEVEN; KRAMER, KOEN; ROBERT, ELISABETH M. R.; AAKALA, TUOMAS; AMOROSO, MARIANO M.; BIGLER, CHRISTOF; CAMARERO, J. JULIO; CUFAR, KATARINA; GEA-IZQUIERDO, GUILLERMO; GILLNER, STEN; HAAVIK, LAUREL J.; HERES, ANA-MARIA; KANE, JEFFREY M.; KHARUK, VYACHESLAV I.; KITZBERGER, THOMAS; KLEIN, TAMIR; LEVANIC, TOM; LINARES, JUAN C.; MÄKINEN, HARRI; OBERHUBER, WALTER; PAPADOPOULOS, ANDREAS; ROHNER, BRIGITTE; SANGÜESA-BARREDA, GABRIEL; STOJANOVIC, DEJAN B.; SUÁREZ, MARIA LAURA; VILLALBA, RICARDO; MARTÍNEZ-VILALTA, JORDI
Revista:
NATURE COMMUNICATIONS
Editorial:
Springer Nature
Referencias:
Año: 2020 vol. 11
ISSN:
2041-1723
Resumen:
Severe droughts have the potential to reduce forest productivity and trigger tree mortality.Most trees face several drought events during their life and therefore resilience to dryconditions may be crucial to long-term survival. We assessed how growth resilience to severedroughts, including its components resistance and recovery, is related to the ability to survivefuture droughts by using a tree-ring database of surviving and now-dead trees from 118 sites(22 species, >3,500 trees). We found that, across the variety of regions and species sampled,trees that died during water shortages were less resilient to previous non-lethal droughts,relative to coexisting surviving trees of the same species. In angiosperms, drought-relatedmortality risk is associated with lower resistance (low capacity to reduce impact of the initialdrought), while it is related to reduced recovery (low capacity to attain pre-drought growthrates) in gymnosperms. The different resilience strategies in these two taxonomic groupsopen new avenues to improve our understanding and prediction of drought-inducedmortality.