N and P constrain C in ecosystems under climate change: Role of nutrient redistribution, accumulation, and stoichiometry.

ABSTRACT: We use the Multiple Element Limitation (MEL) model to examine responses of 12 ecosystems to elevated carbon dioxide (CO₂ ), warming, and 20% decreases or increases in precipitation. Ecosystems respond synergistically to elevated CO₂ , warming, and decreased precipitation combined because higher water-use efficiency with elevated CO₂ and higher fertility with warming compensate for responses to drought. Response to elevated CO₂ , warming, and increased precipitation combined is additive. We analyze changes in ecosystem carbon (C) based on four nitrogen (N) and four phosphorus (P) attribution factors: (1) changes in total ecosystem N and P, (2) changes in N and P distribution between vegetation and soil, (3) changes in vegetation C:N and C:P ratios

SUBMITTER: Rastetter EB 

PROVIDER: S-EPMC10078338 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature