Stable isotopes and C and N composition of seston and mesozooplankton in the tropical and subtropical Atlantic

Carbon and nitrogen elemental composition along with natural abundance of stable isotopes in seston and zooplankton specimens (>200 µm) were measured in samples collected at 12 stations in the tropical and subtropical Atlantic. Seston samples were collected with Niskin bottles and zooplankton with a MOCNESS-1 net in the epipelagic (0-200 m), upper mesopelagic (200-500 m) and lower mesopelagic layers (500-800 m). Zooplankton specimens were representative of the main trophic guilds (herbivorous copepods, omnivorous-carnivorous copepods, large crustacean mesozooplankton and chaetognaths) according to the literature