oa Hydrogen Isotope Dynamics in Macrocystis Pyrifera: Implications for Compound-Specific Hydrogen Isotope Analyses

Marine ecosystems play a crucial role in global carbon fixation, with macroalgae sequestering around 200 million tons of CO2 annually. Hydrogen isotope (d²H) analyses offer a novel approach to refining these estimates and understanding macroalgal metabolism. Using Macrocystis pyrifera as a model, this study explores d²H variability, linking biosynthetic fractionation to metabolic processes. By bridging isotopic and biochemical research, this work advances marine carbon cycle studies and the application of d²H analyses in ecological and palaeoenvironmental contexts.