Exogenous nitrogen input skews estimates of microbial nitrogen use efficiency by ecoenzymatic stoichiometry

• Published in: Ecological processes Vol. 12; no. 1; p. 46
• Main Authors: Sun, Lifei, Moorhead, Daryl L., Cui, Yongxing, Wanek, Wolfgang, Li, Shuailin, Wang, Chao
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.12.2023; Springer Nature B.V; SpringerOpen
• Subjects: Aminopeptidase; carbon; Earth and Environmental Science; Efficiency; Environment; Estimates; Extracellular enzyme; Isotope labeling; Labeling; Leucine; leucyl aminopeptidase; Microbial metabolism limitation; microbial nitrogen; Microorganisms; N-Acetylglucosaminidase; Nitrogen; Nitrogen addition; nutrient use efficiency; Resource allocation; Resource availability; Stoichiometry; Urea; Nitrogen addition; Isotope labeling; Extracellular enzyme; Resource allocation; Microbial metabolism limitation

Background Ecoenzymatic stoichiometry models (EEST) are often used to evaluate microbial nutrient use efficiency, but the validity of these models under exogenous nitrogen (N) input has never been clarified. Here, we investigated the effects of long-term N addition (as urea) on microbial N use effic...