Drivers of soil microbial and detritivore activity across global grasslands.
Journal
Communications biology
ISSN: 2399-3642
Titre abrégé: Commun Biol
Pays: England
ID NLM: 101719179
Informations de publication
Date de publication:
01 Dec 2023
01 Dec 2023
Historique:
received:
31
03
2023
accepted:
17
11
2023
medline:
4
12
2023
pubmed:
2
12
2023
entrez:
1
12
2023
Statut:
epublish
Résumé
Covering approximately 40% of land surfaces, grasslands provide critical ecosystem services that rely on soil organisms. However, the global determinants of soil biodiversity and functioning remain underexplored. In this study, we investigate the drivers of soil microbial and detritivore activity in grasslands across a wide range of climatic conditions on five continents. We apply standardized treatments of nutrient addition and herbivore reduction, allowing us to disentangle the regional and local drivers of soil organism activity. We use structural equation modeling to assess the direct and indirect effects of local and regional drivers on soil biological activities. Microbial and detritivore activities are positively correlated across global grasslands. These correlations are shaped more by global climatic factors than by local treatments, with annual precipitation and soil water content explaining the majority of the variation. Nutrient addition tends to reduce microbial activity by enhancing plant growth, while herbivore reduction typically increases microbial and detritivore activity through increased soil moisture. Our findings emphasize soil moisture as a key driver of soil biological activity, highlighting the potential impacts of climate change, altered grazing pressure, and eutrophication on nutrient cycling and decomposition within grassland ecosystems.
Identifiants
pubmed: 38040868
doi: 10.1038/s42003-023-05607-2
pii: 10.1038/s42003-023-05607-2
pmc: PMC10692199
doi:
Substances chimiques
Soil
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1220Subventions
Organisme : Deutsche Forschungsgemeinschaft (German Research Foundation)
ID : FZT 118
Informations de copyright
© 2023. The Author(s).
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