English Version To answer this question, the QUIMA group studied the interaction of iron and copper in the Macaronesia region. We make here a summary of the results presented at the Week of Marine Sciences in Gran Canaria. INFLUENCE OF COASTAL PROCESSES ON THE ORGANIC COMPLEXATION OF IRON AND COPPER IN THE MACARONESIA REGION Coastal environments around islands are characterized by the combination of physical, chemical, and biological interactions, such as water mixing, wind stress, dust deposition, and resuspension from sediments that have impacts on the biogeochemistry of trace metals like iron (Fe) and copper (Cu). Therefore, the coastal waters and the influences of their processes on the organic complexation of Fe and Cu have to be studied to fully understand the biogeochemical cycles of these metals in the marine environment. Dissolved iron (dFe) and copper (dCu), the concentration and the conditional stability constants of organic bind...