Widespread breakdown in masting in European beech due to rising summer temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F24%3A100486" target="_blank" >RIV/60460709:41320/24:100486 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1111/gcb.17307" target="_blank" >http://dx.doi.org/10.1111/gcb.17307</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/gcb.17307" target="_blank" >10.1111/gcb.17307</a>

Result language

angličtina

Original language name

Widespread breakdown in masting in European beech due to rising summer temperatures

Original language description

Climate change effects on tree reproduction are poorly understood, even though the resilience of populations relies on sufficient regeneration to balance increasing rates of mortality. Forest-forming tree species often mast, i.e. reproduce through synchronised year-to-year variation in seed production, which improves pollination and reduces seed predation. Recent observations in European beech show, however, that current climate change can dampen interannual variation and synchrony of seed production and that this masting breakdown drastically reduces the viability of seed crops. Importantly, it is unclear under which conditions masting breakdown occurs and how widespread breakdown is in this pan-European species. Here, we analysed 50 long-term datasets of population-level seed production, sampled across the distribution of European beech, and identified increasing summer temperatures as the general driver of masting breakdown. Specifically, increases in site-specific mean maximum temperatures during June and July were observed across most of the species range, while the interannual variability of population-level seed production (CVp) decreased. The declines in CVp were greatest, where temperatures increased most rapidly. Additionally, the occurrence of crop failures and low seed years has decreased during the last four decades, signalling altered starvation effects of masting on seed predators. Notably, CVp did not vary among sites according to site mean summer temperature. Instead, masting breakdown occurs in response to warming local temperatures (i.e. increasing relative temperatures), such that the risk is not restricted to populations growing in warm average conditions. As lowered CVp can reduce viable seed production despite the overall increase in seed count, our results warn that a covert mechanism is underway that may hinder the regeneration potential of European beech under climate change, with great potential to alter forest functioning and community dynamics.

Czech name

—

Czech description

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Type

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

CEP classification

—

OECD FORD branch

40100 - Agriculture, Forestry, and Fisheries

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

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

Name of the periodical

GLOBAL CHANGE BIOLOGY

ISSN

1354-1013

e-ISSN

1354-1013

Volume of the periodical

30

Issue of the periodical within the volume

5.0

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

12

Pages from-to

1-12

UT code for WoS article

001214333500001

EID of the result in the Scopus database

2-s2.0-85192087491