title: Relationships between bacterial diversity and environmental variables in a tropical marine environment, Rio de Janeiro.
abstract: This study is the first to apply a comparative analysis of environmental chemistry, microbiological parameters and bacterioplankton 16S rRNA clone libraries from different areas of a 50 km transect along a trophic gradient in the tropical Guanabara Bay ecosystem. Higher bacterial diversity was found in the coastal area, whereas lower richness was observed in the more polluted inner bay water. The significance of differences between clone libraries was examined with LIBSHUFF statistics. Paired reciprocal comparisons indicated that each of the libraries differs significantly from the others, and this is in agreement with direct interpretation of the phylogenetic tree. Furthermore, correspondence analyses showed that some taxa are related to specific abiotic, trophic and microbiological parameters in Guanabara Bay estuarine system.
authors: Instituto de Biologia, Universidade Federal do Rio de Janeiro, RJ, Brazil.
authors: Ricardo P
authors: RP
authors: Vieira
authors: Alessandra M
authors: AM
authors: Gonzalez
authors: Alexander M
authors: AM
authors: Cardoso
authors: Denise N
authors: DN
authors: Oliveira
authors: Rodolpho M
authors: RM
authors: Albano
authors: Maysa M
authors: MM
authors: Clementino
authors: Orlando B
authors: OB
authors: Martins
authors: Rodolfo
authors: R
authors: Paranhos
mesh_terms: D001419:Bacteria / Q000235:genetics / Q000254:growth & development*; D001483:Base Sequence; D044822:Biodiversity; D001938:Brazil; D017753:Ecosystem; D005618:Fresh Water / Q000382:microbiology; D014644:Genetic Variation / Q000235:genetics; D005843:Geography; D008969:Molecular Sequence Data; D010802:Phylogeny; D010933:Plankton / Q000235:genetics / Q000254:growth & development*; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D045483:Rivers / Q000382:microbiology; D054712:Salinity; D012623:Seawater / Q000382:microbiology*; D014329:Tropical Climate; D014871:Water Microbiology
chemical_list: D012336:RNA, Ribosomal, 16S