SciELO - Scientific Electronic Library Online

vol.20 issue3Holostipous Lejeuneaceae (Marchantiophyta) of Bahia State, BrazilBromeliaceae of the Praia do Sul State Biological Reserve restinga: community composition, abundance and similarity author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Acta Botanica Brasilica

Print version ISSN 0102-3306On-line version ISSN 1677-941X


ALVES-DE-SOUZA, Catharina; MENEZES, Mariângela  and  HUSZAR, Vera. Phytoplankton composition and functional groups in a tropical humic coastal lagoon, Brazil. Acta Bot. Bras. [online]. 2006, vol.20, n.3, pp.701-708. ISSN 0102-3306.

This paper presents the composition and functional groups of the phytoplankton from Comprida lagoon, a tropical humic coastal Lagoon located in Southeast Brazil. A total of 28 taxa was found, distributed in eight taxonomic divisions as follows: 26% Heterokontophyta, 21% Chlorophyta, 21% Cyanophyta, 14% Bacillariophyta, 14% Cryptophyta, and 4% Prymnesiophyta. Twenty-three taxa were identified at the specific and infraspecific levels, from which four are new records for Brazil and two for Rio de Janeiro State. Phytoplankton of the Comprida lagoon was comprised of several flagellates, but also eukaryote and prokaryote picoplankton, filamentous cyanobacteria and several diatoms. The biomass was lower than that found in other lacustrine systems, and showed remarkable temporal variability. According to the functional-group approach, the populations formed eight groups: Q, Z, E, N, X3, X2, S1 and Y, most typical of oligo- or mesotrophic systems, tolerant to nutrient deficiency and sensitive to increased pH.

Keywords : phytoplankton; tropics; humic systems; coastal lagoons; functional groups; Southeast Brazil.

        · abstract in Portuguese     · text in English     · English ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License