Basin-wide variation in tree hydraulic safety margins predicts the carbon balance of Amazon forests.

ABSTRACT: Tropical forests face increasing climate risk^1,2, yet our ability to predict their response to climate change is limited by poor understanding of their resistance to water stress. Although xylem embolism resistance thresholds (for example, [Formula: see text]₅₀) and hydraulic safety margins (for example, HSM₅₀) are important predictors of drought-induced mortality risk^3-5, little is known about how these vary across Earth's largest tropical forest. Here, we present a pan-Amazon, fully standardized hydraulic traits dataset and use it to assess regional variation in drought sensitivity and hydraulic trait ability to predict species distributions and long-term forest biomass accumulation. Parameters [Formula: see text]₅₀ and HSM₅₀

SUBMITTER: Tavares JV 

PROVIDER: S-EPMC10156596 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature