Effects of plant diversity on productivity strengthen over time due to trait-dependent shifts in species overyielding.

Journal

Nature communications

ISSN: 2041-1723

Titre abrégé: Nat Commun

Pays: England

ID NLM: 101528555

Informations de publication

Date de publication:
07 Mar 2024

Historique:

received: 08 11 2023

accepted: 23 02 2024

medline: 8 3 2024

pubmed: 8 3 2024

entrez: 7 3 2024

Statut: epublish

Résumé

Plant diversity effects on community productivity often increase over time. Whether the strengthening of diversity effects is caused by temporal shifts in species-level overyielding (i.e., higher species-level productivity in diverse communities compared with monocultures) remains unclear. Here, using data from 65 grassland and forest biodiversity experiments, we show that the temporal strength of diversity effects at the community scale is underpinned by temporal changes in the species that yield. These temporal trends of species-level overyielding are shaped by plant ecological strategies, which can be quantitatively delimited by functional traits. In grasslands, the temporal strengthening of biodiversity effects on community productivity was associated with increasing biomass overyielding of resource-conservative species increasing over time, and with overyielding of species characterized by fast resource acquisition either decreasing or increasing. In forests, temporal trends in species overyielding differ when considering above- versus belowground resource acquisition strategies. Overyielding in stem growth decreased for species with high light capture capacity but increased for those with high soil resource acquisition capacity. Our results imply that a diversity of species with different, and potentially complementary, ecological strategies is beneficial for maintaining community productivity over time in both grassland and forest ecosystems.

Identifiants

DOI: 10.1038/s41467-024-46355-z PMID: 38453933

pubmed: 38453933

doi: 10.1038/s41467-024-46355-z

pii: 10.1038/s41467-024-46355-z

doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

Pagination

2078

Subventions

Organisme : National Natural Science Foundation of China (National Science Foundation of China)

ID : 32030068

Informations de copyright

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