MICROBIAN LAMINITE AND CYANOBACTERIAS FROM THE PERNAMBUCO LAGOON, NEOGENE OF THE RIO DE JANEIRO, BRAZIL

Authors

  • Anderson Andrade Cavalcanti IESPA Universidade do Brasil (UFRJ)
  • Loreine Hermida da Silva SILVA Universidade Federal do Estado do Rio de Janeiro (UNIRIO)

Abstract

The Pernambuco Lagoon is located between 22°55?31? to 22°56?02?S and 42°20?21? to 42°17?26? W of Greenwich, in the northeastern part of Rio de Janeiro State, Brazil. Its formation is related to the last Holocene transgression. The semi-arid climate presents a great precipitation and evaporation deficit ratio. The aim of this study was to characterize the cyanobacteria assemblage and laminite types found in the floor of Pernambuco Lagoon. The laminites are flat, pustuled, polygonal, coloform and film. The filamentous cyanobacteria of Microcoleus chthonoplastes (Thuret) Gomont, 1892 and Schizothrix friesii (Agardh) Gomont, 1892 are dominant in the polygonal laminite. Microcoleus chthonoplastes (Thuret) Gomont, 1892 and Microcoleus tenerrimus Gomont, 1892 are abundant and form the coloform laminite. The species Schizothrix friesii (Agardh) Gomont, 1892 and Lyngbya aestuarii (Liebman) Gomont, 1892 are the main cyanobacteria in the flat laminite. The pustuled laminites are composed mainly of Chroococcus minutus Keissler, 1901 and Phormidium okenii (Gomont) Anagnostidis & Komárek, 1988, and the film laminites of Entophysalis granulosa Kutzing, 1843 and Chroococcus turgidus Nägeli, 1849..

Published

2006-11-29

How to Cite

IESPA, A. A. C., & SILVA, L. H. da S. (2006). MICROBIAN LAMINITE AND CYANOBACTERIAS FROM THE PERNAMBUCO LAGOON, NEOGENE OF THE RIO DE JANEIRO, BRAZIL. Revista Geociências - UNG-Ser - ISSN 1981-741X (1981-7428), 4(1), 5–10. Retrieved from https://revistas.ung.br/index.php/geociencias/article/view/1

Issue

Section

Artigos