Marietta Straub

Reduced N2 fixation in the tropical Atlantic Ocean during the warm late Pliocene

Abstract Water column denitrification, a major oceanic nitrogen (N) sink, decreased under past warmer-than-present climates, but the response of N 2 fixation, the main oceanic N source, remains unresolved. Here we address this gap using foraminifera-bound N isotope records from t...