Interactions among nutrients govern the global grassland biomass-precipitation relationship.

ABSTRACT: Ecosystems are experiencing changing global patterns of mean annual precipitation (MAP) and enrichment with multiple nutrients that potentially colimit plant biomass production. In grasslands, mean aboveground plant biomass is closely related to MAP, but how this relationship changes after enrichment with multiple nutrients remains unclear. We hypothesized the global biomass-MAP relationship becomes steeper with an increasing number of added nutrients, with increases in steepness corresponding to the form of interaction among added nutrients and with increased mediation by changes in plant community diversity. We measured aboveground plant biomass production and species diversity in 71 grasslands on six continents representing the global span of grassland MAP, diversity, management, and so

SUBMITTER: Fay PA 

PROVIDER: S-EPMC12012460 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature