| toxic cyanobacteria strains isolated from blooms in the guadiana river (southwestern spain). | this paper describes the occurrence of toxic cyanobacteria along the guadiana river over its course between mérida and badajoz (extremadura, spain). water sampling for phytoplankton quantification and toxin analysis was carried out regularly between 1999 and 2001 in six different locations, including two shallow, slow-flowing river sites, two streamed river sites and two drinking water reservoirs. the cyanobacterial community differed significantly between these locations, especially during the ... | 2004 | 15515966 |