
handle: 11441/51136
Las plantas acuáticas incluyen diversas especies como: Eichhornia crassipes, Hydrilla verticillata o Salvinia molesta, que, debido a sus especiales características fisiológicas y reproductivas y a las alteraciones que producen en el medio, constituyen una excelente manera para conocer la forma de actuar de las especies exóticas invasoras. Una de estas especies: Azolla filiculoides ha aparecido recientemente en el Parque Nacional de Doñana (SW España), extendiéndose rápidamente por toda la marisma y alcanzando incluso las lagunas sobre las arenas. Su forma de crecimiento, formando densos tapetes que cubren por completo la superficie del agua y la posibilidad de fijar nitrógeno atmosférico, auguran importantes cambios en los ecosistemas acuáticos del Parque Nacional de Doñana. Asimismo, la presencia de otras especies en las inmediaciones del Parque Nacional de Doñana indica que el problema de Azolla, no es un problema aislado, sino que está incluido en el proceso global de expansión de las especies exóticas invasoras, consecuencia de las alteraciones de los hábitat naturales producidos por el hombre
Aquatic plants include some species as: Eichhornia crassipes, Hydrilla verticillata or Salvinia molesta, which due to special physiological and reproductive characters and the problems they cause in native ecosystems, they constitute an excellent way to know the behavior of Invasive exotic species. One of this kind of species: Azolla filiculoides, has recently been found in the Doñana National Park (SW Spain). It has quickly spread over Doñana’s marshland and has arrived to the sandy ponds even. Its growing mode, that makes a dense carpet over the water surface, and its ability to fix the atmospheric nitrogen, predicted important changes in the marshland ecosystem of Doñana National Park. Besides, the appearance of others exotic species in the neighborhood of Doñana National Park, points to Azolla is not an isolated case. It is part of the global process, effect of the men’s disturbances on natural habitats
Jacinto de agua, Macrófitos acuáticos, Flora exótica, Azolla, Doñana, Plantas acuáticas
Jacinto de agua, Macrófitos acuáticos, Flora exótica, Azolla, Doñana, Plantas acuáticas
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