The fate of Guadalquivir River discharges in the coastal strip of the Gulf of Cádiz. A study based on the linking of watershed catchment and hydrodynamic models

A Method to Establish Marine Bio-Regions in the Pelagic Ecosystem Based on Phytoplanktonic Communities. Aplication to the Southern Spanish Coast

“…This central position is far from the shore in the case of the Gulf of Cadiz because of its large width and therefore would not be directly affected by river discharges (mainly Guadalquivir and Guadiana). Gomiz-Pascual et al (2021) have shown that the Guadalquivir river has an average discharge of 116.5 m 3 /s, and Caballero et al (2014) evidenced that there could be important phytoplanktonic blooms associated to the turbidity plumes of these rivers. Ribas-Ribas et al (2013) and Huertas et al (2005) calculated the transports of phosphates, silicates and dissolved organic matter associated to the river discharges, and Ruiz et al (2006) and Caballero-Huertas et al (2022) showed that the fertilizing effect of the rivers would affect not only to the phytoplanktonic abundance, but also to the zooplankton one and to the spawning and body condition of small pelagic fishes such as anchovy and sardine.…”