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- W2155156814 abstract "AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials AME 67:15-24 (2012) - DOI: https://doi.org/10.3354/ame01572 N2 fixation rates and associated diversity (nifH) of microbialite and mat-forming consortia from different aquatic environments in Mexico Yislem Beltrán1, Carla M. Centeno1, Felipe García-Oliva2, Pierre Legendre3, Luisa I. Falcón1,* 1Instituto de Ecología, Universidad Nacional Autónoma de México (UNAM), Circuito Exterior sn, Ciudad Universitaria, Coyoacán, México City, Distrito Federal 04510, Mexico 2El Centro de Investigaciones en Ecosistemas (CIECO), Universidad Nacional Autónoma de Mexico, Morelia, Michoacán 58190, Mexico 3Département des Sciences Biologiques, Université de Montréal, CP 6128, Montréal, Québec H3C 3J7, Canada *Email: falcon@ecologia.unam.mx ABSTRACT: The present study describes patterns and rates of N2 fixation and associated diversity (based on the nifH gene) of microbialite and mat-forming bacterial consortia from different aquatic environments in Mexico. All of the communities shared a diurnal pattern of N2 fixation with peak activity during the day while showing a unique genetic composition. Our study suggests the importance of heterocystous cyanobacteria as the main diazotrophic organisms, although nifH sequences were also affiliated to Oscillatoriales, Chroococcales, and several Proteobacteria. Genetic composition did not relate to the environmental variables analysed, although rates of nitrogenase activity associated to microbial C and N explained 11% of the variation among consortia. KEY WORDS: N2 fixation · Microbialites · Microbial mats · nifH · Diversity · Community ecology Full text in pdf format PreviousNextCite this article as: Beltrán Y, Centeno CM, García-Oliva F, Legendre P, Falcón LI (2012) N2 fixation rates and associated diversity (nifH) of microbialite and mat-forming consortia from different aquatic environments in Mexico. Aquat Microb Ecol 67:15-24. https://doi.org/10.3354/ame01572 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in AME Vol. 67, No. 1. Online publication date: July 27, 2012 Print ISSN: 0948-3055; Online ISSN: 1616-1564 Copyright © 2012 Inter-Research." @default.
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- W2155156814 title "N<sub>2 fixation rates and associated diversity (nifH) of microbialite and mat-forming consortia from different aquatic environments in Mexico" @default.
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