Carbonate chemistry fitness landscapes inform diatom resilience to future perturbations.

ABSTRACT: Marine diatoms are an abundant and ecologically important phytoplankton group susceptible to changing environmental conditions. Currently available data assessing diatom responses focus on empirical comparisons between present-day and future conditions, rather than exploring the mechanisms driving these responses. Here, we conducted high-resolution growth experiments to map the fitness of diatoms across broad carbonate chemistry landscapes. Our results reveal species-specific carbonate chemistry niches, which can be used to predict ecological shifts between species under changing conditions driven by ocean acidification or ocean alkalinity enhancement. The results demonstrate that changes in diatom fitness are almost exclusively driven by carbon dioxide and proton concentrations, with bica

SUBMITTER: Ferderer A 

PROVIDER: S-EPMC12442879 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature