Jose Y. S. auteur aut IRD Aumont Olivier auteur aut IRD Machu Eric auteur aut IRD Penven Pierrick auteur aut IRD Moloney C. L. auteur aut IRD Maury Olivier auteur aut IRD text journalArticle eng text/pdf born digital access The impact of mesoscale activity on phytoplankton and nutrient distribution in the Mozambique Channel was simulated by coupling a biogeochemical model (PISCES) with a regional oceanic model (ROMS). Examples of the effects of eddies on the biogeochemistry of the Mozambique Channel are presented to illustrate the complexity of the system. In the model, several cyclonic eddies were found with low concentrations of chlorophyll at their cores, which contrasts with previous studies in the open ocean. In addition, several anticyclonic eddies were simulated with high concentrations of chlorophyll at their cores. Phytoplankton growth within these mesoscale features (both cyclonic and anticyclonic eddies) occurred in response to nutrient injection into the euphotic zone by advection, and subsequent retention of surrounding nutrient-rich waters within eddies. Offshore nutrient distributions depended strongly on lateral advection of nutrient-rich water from the coastal regions, induced by eddy interaction with the shelf. The environmental conditions at the locations where eddies were generated had an important effect on nutrient concentrations within these structures. specialized Ocean physical-biogeochemical coupling Cyclonic and anticyclonic eddies Chlorophyll Nutrients Mozambique Channel MOZAMBIQUE CANAL OCEAN INDIEN 032 034 020 Barlow R. ed. edt IRD Marsac Francis ed. edt IRD Ternon Jean-Francois ed. edt IRD Roberts M. ed. edt IRD 100 No spécial 79-93 2014 0967-0645 https://www.documentation.ird.fr/hor/fdi:010061897 10.1016/j.dsr2.2013.10.018 0967-0645 [F B010061897] https://www.documentation.ird.fr/hor/fdi:010061897 https://www.documentation.ird.fr/intranet/publi/2014/05/010061897.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2014-05-28 2017-08-23 fdi:010061897 fre