Phytobenthos and macrophytes of the Manzanares river basin, Sucre state, Venezuela

A phytobenthos and macrophytes checklist was carried at the Manzanares
river basin, Sucre state, Venezuela, from November 2003 to July 2005. Collect
was accomplished manually and material was examined with a stereoscopic
loupe and a microscope. With artificial key aid, 21 phytobenthos and
macrophytes species: 4 Cyanophyta, 9 Chlorophyta, 1 Heterokontophyta, 2
Rhodophyta, 3 Bryophyta and 2 Magnoliophyta were identified. The basin lowers
of the Manzanares presented the higher species number, being the Chlorophyta
Spirogyra majuscula and Cladophora fracta and the Bryophyta Fontinalis
squamosa the most extensively distributed. The Manzanares river pollution
favors the filamentous green algae development.