Estudio fitogeográfico y botánico de las islas del Bidasoa

摘要: From the biological and geomorfological point of view, marshy zones are one most interesting ecosystems. Bidasoa stuary is last redoubts in province Guipuzcoa. Depending on several factors i.e. : salinity, flooding, erosion, humane activity temporal evolution plants arranged stratified bands depending their adaptability to these factors.