Project DIAPICNA -DIAzotrophic PIco-Cyanobacteria in the North Atlantic open ocean: their abundance and importance as a source of new nitrogen at the Azores Front/Current

• Main Authors: Riou, V, Roukaerts, A, Batista, D, Piniella, A, E M, Prakya, S, R, Loureiro, C, Santos, M, Medeiros, A, Gomes, S, Alves, Lt, a V, Elskens, M, Biegala, I, C, Martins, A, Dehairs, F
• Other Authors: Institut de Recherche pour le Développement (IRD), Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2016
• Subjects: [SDE]Environmental Sciences; North Atlantic
• Online Access: https://ird.hal.science/ird-03759302; https://ird.hal.science/ird-03759302/document; https://ird.hal.science/ird-03759302/file/Riou%20et%20al.%202016%20Project_DIAPICNA_Poster.pdf

International audience Nutrient concentrations indicate an oligotrophic area with nutrient bottom regeneration at the North of the Azores Current Front (Station 4, 35°N, Graph 2, Left). Nitrate isotopes indicate nitrate assimilation at Station 4, while depleted signatures South of the Front might result from N 2 fixation (Graph 2, Right).