Sébastien Lefebvre

Estimating isotopic turnover rates using DEB theory

The isotopic turnover rate (λ) quantifies the rate at which an organism’s tissues are renewed. It is a key parameter in dietary studies as it governs predator-prey dynamics and by extension the broader food web. However, λ has historically been difficult to estimate, typically re...

Intra- and inter-specific variability in benthic foraminifera modulates surface sediment reworking

Abstract Bioturbation is a key ecological process that regulates benthic ecosystem functioning, including organic matter remineralization and nutrient regeneration. Despite growing evidence that meiofauna, and benthic foraminifera in particular, contribute to sediment bioturbatio...