Resumen de Los ostrácodos como indicadores ambientales: la laguna de Nador (NE de Marruecos)
Francisco Ruiz Muñoz, Manuel Abad de los Santos, Edith Xio Mara García, Naïma Hamoumi, M. Labraimi, E.H. Boumaggard, I. Bouamterhane
The analysis of the ostracod faunes collected in two seasonal campaigns carried out In the Nador lagoon (NE Morocco) permits to delimitate four main assemblages: a) Marine, composed by Pontocythere turbida, Urocythereis oblonga or Semicytherura spp and localized near the artificial mouth; b) Inner lagoon, present near the lagoon internal margin with scarce tidal renewal and characterized by high percentages of Loxoconcha rhomboidea and Palmoconcha turbida; c) Phytal, including species (Propontocypris, Xestoleberis) closely related to dense bottom vegetation (Caulerpa); and d) Confined, observed in the southwestern and northeaster regions, being nearly monospecific (Cyprideis torosa) . Stress conditions (pollution, industrial and/or agricultural inputs, high hydrodynamic levels, urban effluents) cause the disappearance of these microcrustaceans or the scarce apparition of reworked instars.
