Web of Science: 5 citas, Scopus: 5 citas, Google Scholar: citas,
Historical and event-based bioclimatic suitability predicts regional forest vulnerability to compound effects of severe drought and bark beetle infestation
Kitzberger, Thomas (Universidad Nacional del Comahue (Argentina))
Lloret Maya, Francisco (Centre de Recerca Ecològica i Aplicacions Forestals)

Fecha: 2018
Resumen: Vulnerability to climate change, and particularly to climate extreme events, is expected to vary across species ranges. Thus, we need tools to standardize the variability in regional climatic legacy and extreme climate across populations and species. Extreme climate events (e. g. , droughts) can erode populations close to the limits of species' climatic tolerance. Populations in climatic-core locations may also become vulnerable because they have developed a greater demand for resources (i. e. , water) that cannot be enough satisfied during the periods of scarcity. These mechanisms can become exacerbated in tree populations when combined with antagonistic biotic interactions, such as insect infestation. We used climatic suitability indices derived from Species Distribution Models (SDMs) to standardize the climatic conditions experienced across Pinus edulis populations in southwestern North America, during a historical period (1972–2000) and during an extreme event (2001–2007), when the compound effect of hot drought and bark beetle infestation caused widespread die-off and mortality. Pinus edulis climatic suitability diminished dramatically during the die-off period, with remarkable variation between years. P. edulis die-off occurred mainly not just in sites that experienced lower climatic suitability during the drought but also where climatic suitability was higher during the historical period. The combined effect of historically high climatic suitability and a marked decrease in the climatic suitability during the drought best explained the range-wide mortality. Lagged effects of climatic suitability loss in previous years and co-occurrence of Juniperus monosperma also explained P. edulis die-off in particular years. Overall, the study shows that past climatic legacy, likely determining acclimation, together with competitive interactions plays a major role in responses to extreme drought. It also provides a new approach to standardize the magnitude of climatic variability across populations using SDMs, improving our capacity to predict population's or species' vulnerability to climatic change.
Nota: Número d'acord de subvenció MINECO/CGL2015-67419-R
Nota: Número d'acord de subvenció AGAUR/2014/SGR-453
Derechos: Tots els drets reservats
Lengua: Anglès.
Documento: article ; recerca ; acceptedVersion
Materia: Climate change ; Climatic niche ; Core vs. edge populations ; Correlative niche models ; Drought-induced die-off ; Extreme climatic events ; Forest dieback ; Tree mortality
Publicado en: Global change biology, Vol. 24, issue 5 (May 2018) , p. 1952-1964, ISSN 1365-2486

DOI: 10.1111/gcb.14039


Disponible a partir de: 2019-05-30
Post-print. Article

Disponible a partir de: 2019-05-30
Post-print. Resum gràfic

Disponible a partir de: 2019-05-30
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El registro aparece en las colecciones:
Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
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 Registro creado el 2018-02-28, última modificación el 2019-04-08



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