RT info:eu-repo/semantics/article
T1 The Interplay of the Tree and StandLevel Processes Mediate DroughtInduced Forest Dieback: Evidence from Complementary Remote Sensing and Tree-Ring Approaches
A1 Tijerín Triviño, Julián
A1 Moreno Fernández, Daniel
A1 García Alonso, Mariano
A1 Zavala Gironés, Miguel Ángel De
A1 Camarero, Jesús Julio
A1 Lines, Emily R.
A1 Sanchez-Davila, Jesus
A1 Valeriano, Cristina
A1 Viana Soto, Alba
A1 Ruiz Benito, Paloma
K1 Climate change
K1 Decline
K1 Die-off
K1 Mortality
K1 Multiscale assessment
K1 Recovery
K1 Medio Ambiente
K1 Environmental science
AB Drought-induced forest dieback can lead to a tipping point in community dominance, but the coupled response at the tree and stand-level response has not been properly addressed. New spatially and temporally integrated monitoring approaches that target different biological organization levels are needed. Here, we compared the temporal responses of dendrochronological and spectral indices from 1984 to 2020 at both tree and stand levels, respectively, of a drought-prone Mediterranean Pinus pinea forest currently suffering strong dieback. We test the influence of climate on temporal patterns of tree radial growth, greenness and wetness spectral indices; and we address the influence of major drought episodes on resilience metrics. Tree-ring data and spectral indices followed different spatio-temporal patterns over the study period (1984?2020). Combined information from tree growth and spectral trajectories suggests that a reduction in tree density during the mid-1990s could have promoted tree growth and reduced dieback risk. Additionally, over the last decade, extreme and recurrent droughts have resulted in crown defoliation greater than 40% in most plots since 2019. We found that tree growth and the greenness spectral index were positively related to annual precipitation, while the wetness index was positively related to mean annual temperature. The response to drought, however, was stronger for tree growth than for spectral indices. Our study demonstrates the value of long-term retrospective multiscale analyses including tree and stand-level scales to disentangle mechanisms triggering and driving forest dieback.
SN 1432-9840
YR 2022
FD 2022-10-17
LK http://hdl.handle.net/10017/55971
UL http://hdl.handle.net/10017/55971
LA eng
NO Moreno-Fernández, D., Camarero, J.J., García, M. et al. The Interplay of the Tree and Stand-Level Processes Mediate Drought-Induced Forest Dieback: Evidence from Complementary Remote Sensing and Tree-Ring Approaches. Ecosystems 25, 1738-1753 (2022).
NO Ministerio de Ciencia, Innovacion y Universidades
DS MINDS@UW
RD 19-abr-2024