Las algas de El Salto, San Luis Potosí, México: un ejemplo de estudios florísticos en ambientes cambiantes

The algal species present in the pools of the El Salto river, in the locality of the same name are reported. These pools appear when the river begins to dry up and are very similar to lentic habitats in water movement and growth forms of the algae. During the rainy season these pools are covered by the river, which causes a shift in the predominant algal growth forms. 68 species were identified: 42 species of Bacillariophyceae (61.76 % ), 14 species of Chlorophyceae (20.59 %), 3 species of Charophyceae (4.41 %), 7 species of Cyanophyceae (10.29 %) and Rhodophyceae and Dinophyceae with 1 species each (1.47 %). The predominant growth forms in the isolated pools, as occurs in other bodies of stagnant water, are floating filamentous masses composed essentially of species of the Order Zygnematales, and phytoplanktonic and metaphytic species.