Trade-off between seed dispersal in space and time.
Annual
dormancy
germination
iteroparity
lifespan
longevity
perennial
seed bank
seed dispersal
Journal
Ecology letters
ISSN: 1461-0248
Titre abrégé: Ecol Lett
Pays: England
ID NLM: 101121949
Informations de publication
Date de publication:
Nov 2020
Nov 2020
Historique:
received:
09
04
2020
revised:
30
05
2020
accepted:
15
07
2020
pubmed:
4
9
2020
medline:
15
12
2020
entrez:
4
9
2020
Statut:
ppublish
Résumé
Seed movement and delayed germination have long been thought to represent alternative risk-spreading strategies, but current evidence covers limited scales and yields mixed results. Here we present the first global-scale test of a negative correlation between dispersal and dormancy. The result demonstrates a strong and consistent pattern that species with dormant seeds have reduced spatial dispersal, also in the context of life-history traits such as seed mass and plant lifespan. Long-lived species are more likely to have large, non-dormant seeds that are dispersed far. Our findings provide robust support for the theoretical prediction of a dispersal trade-off between space and time, implying that a joint consideration of risk-spreading strategies is imperative in studying plant life-history evolution. The bet-hedging patterns in the dispersal-dormancy correlation and the associated reproductive traits have implications for biodiversity conservation, via prediction of which plant groups would be most impacted in the changing era.
Types de publication
Letter
Langues
eng
Sous-ensembles de citation
IM
Pagination
1635-1642Subventions
Organisme : Royal Botanic Gardens Kew
Organisme : Future Leader Fellowships in Plant and Fungal Science
Organisme : Bentham-Moxon Trust
Organisme : Swedish Research Council
Organisme : Swedish Foundation for Strategic Research
Organisme : Knut and Alice Wallenberg Foundation
Informations de copyright
© 2020 The Authors. Ecology Letters published by John Wiley & Sons Ltd.
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