FOEST, Jessie; CAIGNARD, Thomas; PEARSE, Ian; BOGDZIEWICZ, Michał; HACKET‐PAIN, Andrew

doi:10.1002/ecy.70076

Métadonnées

Licence d’utilisation du document

FOEST, Jessie
Uniwersytet im. Adama Mickiewicza w Poznaniu = Adam Mickiewicz University in Poznań [UAM]
University of Liverpool

CAIGNARD, Thomas
Biodiversité, Gènes & Communautés [BioGeCo]

PEARSE, Ian
US Geological Survey [Fort Collins]

Langue

Article de revue

Ce document a été publié dans

Ecology. 2025-04, vol. 106, n° 4, p. e70076

Ecological Society of America

Résumé en anglais

<div><p>Year-to-year variation in seed crop size (i.e., masting) varies strongly among populations of the same species. Understanding what causes this variation is vital, as masting affects the ability of tree species to regenerate and determines the population dynamics of a wide variety of animals. It is commonly thought that environmental stress is a key driver of masting variability. The environmental stress hypothesis posits that more marginal conditions increase the strength of masting. Using 437 time series from 19 tree species, we find that this hypothesis fails to fully explain how masting varies across marginality gradients. We expected higher interannual variation and less frequent masting events at species margins but instead found that while mast years are indeed less frequent, the interannual variation was lower toward the margins. The observed patterns suggest that populations growing at the margins may invest more resources in low seed production years compared with their conspecifics, hedging their bets in these more challenging environments.</p></div>< Réduire

Mots clés en anglais

alternate bearing

climate gradients

climate marginality

intraspecific variation

mast seeding

masting

reproductive strategy

URI

https://oskar-bordeaux.fr/handle/20.500.12278/207357

DOI

http://dx.doi.org/10.1002/ecy.70076

Project ANR

Une université Augmentée pour un Campus et un monde en Transition - ANR-20-IDES-0001

Origine

Importé de hal

Unités de recherche

BioGeCo (Biodiversité Gènes & Communautés) - UMR 1202