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Temperature as a potent driver of regional forest drought stress and tree mortality

Nature climate change, 2013-03, Vol.3 (3), p.292-297 [Peer Reviewed Journal]

2014 INIST-CNRS ;Copyright Nature Publishing Group Mar 2013 ;ISSN: 1758-678X ;EISSN: 1758-6798 ;DOI: 10.1038/nclimate1693

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Title:
Temperature as a potent driver of regional forest drought stress and tree mortality
Author: PARK WILLIAMS, A ; ALLEN, Craig D ; DEAN, Jeffrey S ; COOK, Edward R ; GANGODAGAMAGE, Chandana ; CAI, Michael ; MCDOWELL, Nate G ; MACALADY, Alison K ; GRIFFIN, Daniel ; WOODHOUSE, Connie A ; MEKO, David M ; SWETNAM, Thomas W ; RAUSCHER, Sara A ; SEAGER, Richard ; GRISSINO-MAYER, Henri D
Subjects: Biological and medical sciences ; Climatology. Bioclimatology. Climate change ; Earth, ocean, space ; Exact sciences and technology ; External geophysics ; Forestry ; Fundamental and applied biological sciences. Psychology ; General forest ecology ; Generalities. Production, biomass. Quality of wood and forest products. General forest ecology ; Meteorology
Is Part Of: Nature climate change, 2013-03, Vol.3 (3), p.292-297
Description: As the climate changes, drought may reduce tree productivity and survival across many forest ecosystems; however, the relative influence of specific climate parameters on forest decline is poorly understood. We derive a forest drought-stress index (FDSI) for the southwestern United States using a comprehensive tree-ring data set representing AD 1000-2007. The FDSI is approximately equally influenced by the warm-season vapour-pressure deficit (largely controlled by temperature) and cold-season precipitation, together explaining 82% of the FDSI variability. Correspondence between the FDSI and measures of forest productivity, mortality, bark-beetle outbreak and wildfire validate the FDSI as a holistic forest-vigour indicator. If the vapour-pressure deficit continues increasing as projected by climate models, the mean forest drought-stress by the 2050s will exceed that of the most severe droughts in the past 1,000 years. Collectively, the results foreshadow twenty-first-century changes in forest structures and compositions, with transition of forests in the southwestern United States, and perhaps water-limited forests globally, towards distributions unfamiliar to modern civilization.
Publisher: London: Nature Publishing Group
Language: English
Identifier: ISSN: 1758-678X
EISSN: 1758-6798
DOI: 10.1038/nclimate1693
Source: ProQuest Central

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Temperature as a potent driver of regional forest drought stress and tree mortality

2014 INIST-CNRS ;Copyright Nature Publishing Group Mar 2013 ;ISSN: 1758-678X ;EISSN: 1758-6798 ;DOI: 10.1038/nclimate1693

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