Tree growth sensitivity to climate varies across a seasonal precipitation gradient.

Autor: Yocom L; Department of Wildland Resources and the Ecology Center, Utah State University, 5230 Old Main, Logan, UT, USA. larissa.yocom@usu.edu., Ogle K; School of Informatics, Computing, and Cyber Systems, Northern Arizona University, Flagstaff, AZ, USA.; Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA., Peltier D; Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA., Szejner P; Instituto de Geología, Universidad Nacional Autónoma de México, México City, México.; Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ, USA., Liu Y; Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, USA.; Department of Geography and Environmental Sciences, Northumbria University, Newcastle upon Tyne, UK., Monson RK; Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ, USA.; Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA.
Jazyk: angličtina
Zdroj: Oecologia [Oecologia] 2022 Apr; Vol. 198 (4), pp. 933-946. Date of Electronic Publication: 2022 Apr 17.
DOI: 10.1007/s00442-022-05156-1
Abstrakt: Spatial patterns of precipitation in the southwestern United States result in a complex gradient from winter-to-summer moisture dominance that influences tree growth. In response, tree growth exhibits seasonal-to-annual variability that is evident in the growth of whole tree rings, and in sub-annual sections such as earlywood and latewood. We evaluated the influence of precipitation and temperature on the growth of Pinus ponderosa trees in 11 sites in the southwestern US. Precipitation during the year of growth and the prior year accounted for about half of the climate influence on annual growth, with the other half reflecting conditions 2-4 years prior to growth, indicating that individual trees do indeed exhibit multi-year "memory" of climate. Trees in wetter sites exhibited weaker influence of past precipitation inputs, but longer memory of climatic variability. Conversely, trees in dry sites exhibited shorter memory of long-term climatic variability, but greater sensitivity to past precipitation effects. These results are consistent with the existence of complex interactions between endogenous (phenotype) effects and exogenous (climate) effects in controlling climate memory in trees. After accounting for climate, residual variability in latewood growth was negatively correlated with earlywood growth, indicating a potential tradeoff between latewood versus earlywood growth. This study provides new insights that will assist the accurate prediction of woody biomass growth and forest carbon sequestration across a southwestern US precipitation gradient.
(© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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