Resilience capacity of Araucaria araucana to extreme drought events
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F22%3A00561065" target="_blank" >RIV/67985939:_____/22:00561065 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.dendro.2022.125996" target="_blank" >https://doi.org/10.1016/j.dendro.2022.125996</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.dendro.2022.125996" target="_blank" >10.1016/j.dendro.2022.125996</a>
Alternative languages
Result language
angličtina
Original language name
Resilience capacity of Araucaria araucana to extreme drought events
Original language description
Ongoing climate change has induced modification in the frequency and intensity of extreme climatic events, with consequent impact on tree and forest growth resilience. Araucaria araucana is an endangered Patagonian conifer, which provides several ecosystem services to local human societies and plays fundamental ecological roles in natural communities. These woodlands have historically suffered different types of anthropogenic disturbance, such as fire, logging and grazing, nevertheless the species resilience to extreme drought events remains still poorly understood. To fill this gap of knowledge, we applied dendrochronological methods to several A. araucana stands distributed along a steep bioclimatic gradient in order to reconstruct resilience capacity, in term of stem growth resistance and recovery, to three successive extreme spring-early summer droughts which occurred during the 20th century. Results showed an increase in the species recovery along the considered dry spells, whereas no clear trend emerged for resistance, suggesting no cumulative effect of drought upon resilience. Both resistance and recovery presented different values depending on bioclimatic settings, being xeric stands more sensitive to extreme episodes with respect to mesic woodlands, particularly during the more recent drought event when trees growing in drier environments were not able to reach pre-drought stem growth rates. Tree-level characteristics, such as age and growth trends prior to drought, modulated the species resilience, suggesting that future dry spells would possibly induce shifts in population dynamics, and furthermore be detrimental for fast-growing trees. Our analysis highlighted the response of a key Patagonian tree species to extreme drought events, providing bioclimatic-specific useful information for conservation plans of this natural resource.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Dendrochronologia
ISSN
1125-7865
e-ISSN
1612-0051
Volume of the periodical
75
Issue of the periodical within the volume
OCT 2022
Country of publishing house
IT - ITALY
Number of pages
9
Pages from-to
125996
UT code for WoS article
000847976900001
EID of the result in the Scopus database
2-s2.0-85136142815