Biotic stability mechanisms in Inner Mongolian grassland.
biodiversity
dominant species
portfolio effect
precipitation variability
productivity
species synchrony
Journal
Proceedings. Biological sciences
ISSN: 1471-2954
Titre abrégé: Proc Biol Sci
Pays: England
ID NLM: 101245157
Informations de publication
Date de publication:
10 06 2020
10 06 2020
Historique:
entrez:
4
6
2020
pubmed:
4
6
2020
medline:
6
8
2020
Statut:
ppublish
Résumé
Biotic mechanisms associated with species diversity are expected to stabilize communities in theoretical and experimental studies but may be difficult to detect in natural communities exposed to large environmental variation. We investigated biotic stability mechanisms in a multi-site study across Inner Mongolian grassland characterized by large spatial variations in species richness and composition and temporal fluctuations in precipitation. We used a new additive-partitioning method to separate species synchrony and population dynamics within communities into different species-abundance groups. Community stability was independent of species richness but was regulated by species synchrony and population dynamics, especially of abundant species. Precipitation fluctuations synchronized population dynamics within communities, reducing their stability. Our results indicate generality of biotic stability mechanisms in natural ecosystems and suggest that for accurate predictions of community stability in changing environments uneven species composition should be considered by partitioning stabilizing mechanisms into different species-abundance groups.
Identifiants
pubmed: 32486982
doi: 10.1098/rspb.2020.0675
pmc: PMC7341928
doi:
Banques de données
Dryad
['10.5061/dryad.ht76hdrc5']
figshare
['10.6084/m9.figshare.c.4969886']
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
20200675Références
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