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Copyright of Tecnología y Ciencias del Agua is the property of Instituto Mexicano de Tecnologia del Agua (IMTA) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Water pollution is a consequence of the industrialization and the society's development due to the constant pouring of domestic and industrial wastewater without a previous treatment; these facts contribute to the environment deterioration and the diversity lost. Three sampling stations of Almendares River (Havana, Cuba) with different pollution levels were studied for one year, to characterize the structure of rapid growth culturable heterotrophic bacterial community. For isolation, serial dilutions of water samples were grown in nutrient agar and incubated at 30°C for 72h. Representative different morphology colonies were isolated and purified on the same culture medium. A total of 60 isolates were obtained and were identified by API system as belonging to the genera Acinetobacter, Arthrobacter, Bacillus, Micrococcus, Staphylococcus, Alcaligenes, Citrobacter and Pseudomonas, prevailing the phyla Firmicutes, Actinobacteria and Proteobacteria. The genus Arthrobacter was isolated more frequently in the sampling station Paila, compared with the rest of the Almendares River stations, while the genera Acinetobacter and Bacillus were isolated more frequently in Río Cristal and Puente de Hierro stations. To characterize the bacterial community structure were used indexes of species richness (S*), Simpson (L') and Shannon-Wiener (H'). The indexes of Simpson and Shannon-Wiener showed significant differences among the bacterial diversity of the three sampling stations. No significant differences were detected by analyzing the species richness. The results showed the influence of pollution on bacterial diversity, which is significantly affected from upstream to downstream in Almendares River. [ABSTRACT FROM AUTHOR]

Copyright of Cuban Journal of Biological Sciences / Revista Cubana de Ciencias Biológicas is the property of Cuban Journal of Biological Sciences / Revista Cubana de Ciencias Biologicas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)