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Reduced ecosystem resilience quantifies fine‐scale heterogeneity in tropical forest mortality responses to drought

Authors :
Donghai Wu
German Vargas G.
Jennifer S. Powers
Nate G. McDowell
Justin M. Becknell
Daniel Pérez‐Aviles
David Medvigy
Yanlan Liu
Gabriel G. Katul
Julio César Calvo‐Alvarado
Ana Calvo‐Obando
Arturo Sanchez‐Azofeifa
Xiangtao Xu
Source :
Global Change Biology. 28:2081-2094
Publication Year :
2021
Publisher :
Wiley, 2021.

Abstract

Sensitivity of forest mortality to drought in carbon-dense tropical forests remains fraught with uncertainty, while extreme droughts are predicted to be more frequent and intense. Here, the potential of temporal autocorrelation of high-frequency variability in Landsat Enhanced Vegetation Index (EVI), an indicator of ecosystem resilience, to predict spatial and temporal variations of forest biomass mortality is evaluated against in situ census observations for 64 site-year combinations in Costa Rican tropical dry forests during the 2015 ENSO drought. Temporal autocorrelation, within the optimal moving window of 24 months, demonstrated robust predictive power for in situ mortality (leave-one-out cross-validation R

Details

ISSN :
13652486 and 13541013
Volume :
28
Database :
OpenAIRE
Journal :
Global Change Biology
Accession number :
edsair.doi.dedup.....05d09f257deec0b677c5bf723cd0fdbf
Full Text :
https://doi.org/10.1111/gcb.16046