Revealing legacy effects of extreme droughts on tree growth of oaks across the Northern Hemisphere

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F24%3A00586448" target="_blank" >RIV/86652079:_____/24:00586448 - isvavai.cz</a>

Alternative codes found

RIV/67985939:_____/24:00586448 RIV/60460709:41320/24:100503 RIV/60076658:12310/24:43908007 RIV/62156489:43410/24:43924955

Result on the web

<a href="https://doi.org/10.1016/j.scitotenv.2024.172049" target="_blank" >https://doi.org/10.1016/j.scitotenv.2024.172049</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2024.172049" target="_blank" >10.1016/j.scitotenv.2024.172049</a>

Result language

angličtina

Original language name

Revealing legacy effects of extreme droughts on tree growth of oaks across the Northern Hemisphere

Original language description

Forests are undergoing increasing risks of droughtinduced tree mortality. Species replacement patterns following mortality may have a significant impact on the global carbon cycle. Among major hardwoods, deciduous oaks ( Quercus spp.) are increasingly reported as replacing dying conifers across the Northern Hemisphere. Yet, our knowledge on the growth responses of these oaks to drought is incomplete, especially regarding postdrought legacy effects. The objectives of this study were to determine the occurrence, duration, and magnitude of legacy effects of extreme droughts and how that vary across species, sites, and drought characteristics. The legacy effects were quantified by the deviation of observed from expected radial growth indices in the period 19402016. We used standlevel chronologies from 458 sites and 21 oak species primarily from Europe, north-eastern America, and eastern Asia. We found that legacy effects of droughts could last from 1 to 5 years after the drought and were more prolonged in dry sites. Negative legacy effects (i.e., lower growth than expected) were more prevalent after repetitive droughts in dry sites. The effect of repetitive drought was stronger in Mediterranean oaks especially in Quercus faginea . Speciesspecific analyses revealed that Q. petraea and Q. macrocarpa from dry sites were more negatively affected by the droughts while growth of several oak species from mesic sites increased during postdrought years. Sites showing positive correlations to winter temperature showed little to no growth depression after drought, whereas sites with a positive correlation to previous summer water balance showed decreased growth. This may indicate that although winter warming favors tree growth during droughts, previousyear summer precipitation may predispose oak trees to currentyear extreme droughts. Our results revealed a massive role of repetitive droughts in determining legacy effects and highlighted how growth sensitivity to climate, drought seasonality and speciesspecific traits drive the legacy effects in deciduous oak species.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10618 - Ecology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Science of the Total Environment

ISSN

0048-9697

e-ISSN

1879-1026

Volume of the periodical

926

Issue of the periodical within the volume

MAY 20 2024

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

12

Pages from-to

172049

UT code for WoS article

001222547600001

EID of the result in the Scopus database

2-s2.0-85189695399