Mariângela Menezes

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Ring analysis was carried out on 39 Rhizophora mangle trees from two salineand one brackish forest sites on apeninsula in north Brazil. All trees showedconstant growth over their entire lifespan, however the distinctiveness of growthrings was greater in trees from the salineareas than in trees from the brackish site.The mean radial increments form a(More)
We compare ‘temperate data’ with information contained in 49 surveys of cryptomonads from Brazilian tropical regions. These surveys contain a total of 351 records relative to a total of 38 taxa at the species level or below. All taxa were identified using traditional morphological characters visible with the light microscope. Two taxa appear to be new(More)
The phototrophic flagellate flora of the Barra Lagoon (22°57′ S and 42°47′ W), Rio de Janeiro State, southeastern Brazil, is described. The lagoon is a shallow, oligohaline, hypertrophic ecosystem in which Cyanophyceae, Chlorophyceae and phytoflagellates are dominant. Between October 1990 and August 1993, weekly integrated samples were collected from a bay,(More)
787 Nutritive value of three organisms from mangrove ecosystem: Ucides cordatus (Linnaeus, 1763), Mytella sp. (Soot-Ryen, 1955) and Crassostrea rhizophorae (Guilding, 1828) Carvalho, AFU.*, Farias, DF., Barroso, CX., Sombra, CML., Silvino, AS., Menezes, MOT., Soares, MO., Fernandes, DAO. and Gouveia, ST. Departamento de Biologia, Universidade Federal do(More)
The main goal of the following glossary is to work as a support to the reading of Regimento proueytoso contra ha pestenença. For this reason it includes every word in the text. However, since it may interest one concerned with the history of Portuguese, the glossary was supplied with additional information on orthography and on the original form of the(More)
Euglenophyceae (phototrophic euglenids) are an important lineage within the Euglenida, Euglenozoa. Most of the approximately 3000 described species are free-living, phototrophic, unicellular flagellates with one to several plastids of secondary origin, three bounding membranes and chlorophylls a and b; but, the lineage also includes colorless species that(More)
A new species of toxic benthic dinoflagellate is described based on laboratory cultures isolated from two locations from Brazil, Rio de Janeiro and Bahia. The morphology was studied with SEM and LM. Cells are elliptical in right thecal view and flat. They are 37-44μm long and 29-36μm wide. The right thecal plate has a V shaped indentation where six(More)
Specimens belonging to the Cymbellaaffinis / Cymbellatumidula / Cymbellaturgidula species complex have many taxonomic problems, due to their high morphological variability and lack of type designations. Fifteen taxon names of this complex, distributed in five species, were re-evaluated concerning their taxonomic status, and lectotypified based on original(More)
The flora of diatoms from Brazil has been studied by several authors from the beginning of the 19(th) up to now. Some of the old lists and descriptions are unknown or have been ignored by Brazilian researchers and the situation of the names cited was not assessed. Here we compiled a list of 101 taxa of diatoms from Brazil registered by Christian Gottfried(More)
Six blooms of Heterosigma akashiwo (Raphidophyceae) were observed from March 2007 through March 2008 in the Rodrigo de Freitas Lagoon, a semi-confined eutrophic system located in Rio de Janeiro state, southeast Brazil. Vegetative cells of H. akashiwo analysed by optical and electron microscopy showed morphology as described in the literature. The blooms(More)