Diverging growth trends and climate sensitivities of individual pine trees after the 1976 extreme drought

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F24%3A00587744" target="_blank" >RIV/86652079:_____/24:00587744 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/24:00138743

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0048969724045182?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0048969724045182?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2024.174370" target="_blank" >10.1016/j.scitotenv.2024.174370</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Diverging growth trends and climate sensitivities of individual pine trees after the 1976 extreme drought

Popis výsledku v původním jazyce

Summer droughts are affecting the productivity and functioning of central European forests, with potentially lasting consequences for species composition and carbon sequestration. Long-term recovery rates and individual growth responses that may diverge from speciesspecific and populationwide behaviour are, however, poorly understood. Here, we present 2052 pine ( Pinus sylvestris ) ring width series from 19 forest sites in south-west Germany to investigate growth responses of individual trees to the exceptionally hot and dry summer of 1976. This outstanding drought event presents a distinctive test case to examine long-term postdrought recovery dynamics. We have proposed a new classification approach to identify a distinct subpopulation of trees, referred to as ,,temporarily affected trees ,, , with a prevalence ranging from 9 to 33 % across the forest stands. These trees exhibited an exceptionally prolonged growth suppression, lasting over a decade, indicating significantly lower resilience to the 1976 drought and a 50 % reduced capacity to recover to predrought states. Furthermore, shifts in resilience and recovery dynamics are accompanied by changing climate sensitivities, notably an increased response to maximum temperatures and summer droughts in post1976 affected pines. Our findings underscore the likely interplay between individual factors and microsite conditions that contribute to divergent tree responses to droughts. Assessing these factors at the individual tree level is recommended to advancing our understanding of forest responses to extreme drought events. By analyzing subpopulation growth patterns, our study provides valuable insights into the impacts of summer droughts on central European forests in context of increasing drought events.

Název v anglickém jazyce

Diverging growth trends and climate sensitivities of individual pine trees after the 1976 extreme drought

Popis výsledku anglicky

Summer droughts are affecting the productivity and functioning of central European forests, with potentially lasting consequences for species composition and carbon sequestration. Long-term recovery rates and individual growth responses that may diverge from speciesspecific and populationwide behaviour are, however, poorly understood. Here, we present 2052 pine ( Pinus sylvestris ) ring width series from 19 forest sites in south-west Germany to investigate growth responses of individual trees to the exceptionally hot and dry summer of 1976. This outstanding drought event presents a distinctive test case to examine long-term postdrought recovery dynamics. We have proposed a new classification approach to identify a distinct subpopulation of trees, referred to as ,,temporarily affected trees ,, , with a prevalence ranging from 9 to 33 % across the forest stands. These trees exhibited an exceptionally prolonged growth suppression, lasting over a decade, indicating significantly lower resilience to the 1976 drought and a 50 % reduced capacity to recover to predrought states. Furthermore, shifts in resilience and recovery dynamics are accompanied by changing climate sensitivities, notably an increased response to maximum temperatures and summer droughts in post1976 affected pines. Our findings underscore the likely interplay between individual factors and microsite conditions that contribute to divergent tree responses to droughts. Assessing these factors at the individual tree level is recommended to advancing our understanding of forest responses to extreme drought events. By analyzing subpopulation growth patterns, our study provides valuable insights into the impacts of summer droughts on central European forests in context of increasing drought events.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Science of the Total Environment

ISSN

0048-9697

e-ISSN

1879-1026

Svazek periodika

946

Číslo periodika v rámci svazku

OCT

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

174370

Kód UT WoS článku

001264447800001

EID výsledku v databázi Scopus

2-s2.0-85197027460