Navegando por Autor "PIETROBOM, Marcio Roberto"

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Aspleniaceae (Polypodiopsida) do corredor de biodiversidade do norte do Pará, Brasil: um fragmento do Centro de Endemismo Guiana
(2012-06) GÓES NETO, Luiz Armando de Araújo; PIETROBOM, Marcio Roberto
This paper is part of a series that will treat the lycophyte and fern species of the Northern Pará Biodiversity Corridor, and is part of the project "Diagnóstico da Biodiversidade das Unidades de Conservação Estaduais do Mosaico Calha Norte, Estado do Pará". Aspleniaceae are treated in this article, and an identification key, illustrations, geographic distributions, brief descriptions, and taxonomic comments are provided. There are eight species of Aspleniaceae in this region (Asplenium angustum Sw., A. auritum Sw., A. cruegeri Hieron., A. delitescens (Maxon) L.D. Gómez, A. juglandifolium Lam., A. salicifolium L., A. serratum L. and A. stuebelianum Hieron.). The majority of the species are epiphytes that grow on decaying trunks inside the forest. For this family, the registered species correspond to 35% of the species in the Brazilian Amazon, and 40% of species in Pará State.
Acesso aberto (Open Access)
Cyatheales (Polypodiopsida) do Corredor de Biodiversidade do Norte do Pará, Brasil
(2014-09) GÓES NETO, Luiz Armando de Araújo; PIETROBOM, Marcio Roberto
This paper is part of a series where the lycophyte and fern species of the Biodiversity Corridor ofnorthern Pará State are presented, produced under the project "Diagnóstico da Biodiversidade das Unidades de ConservaçãoEstaduais do Mosaico Calha Norte, Estado do Pará". In this manuscript the taxonomic treatment of Cyatheales is presented with identification keys, illustrations, distribution, descriptions, and comments to the studied taxa. Two families (Cyatheaceae and Metaxyaceae), three genera (Cnemidaria, Cyathea, and Metaxya), eight species, and one variety are registered. Cyathea is the most representative genus with seven species.
Acesso aberto (Open Access)
Licófitas e monilófitas das Unidades de Conservação da Usina Hidroelétrica - UHE de Tucuruí, Pará, Brasil
(2012-06) FERNANDES, Rozijane Santos; ROSÁRIO, Sebastião Maciel do; PIETROBOM, Marcio Roberto
This work presents a survey of lycophytes and monilophytes in the Conservation Unit named Zonas de Preservação da Vida Silvestre da Usina Hidrelétrica de Tucuruí, Pará State, Brazil. This Conservation Unit is located at southeastern Pará and comprises about 29,700 ha, composed mainly of tropical rainforest. Our results recorded 18 families, 37 genera and 82 species. The richest family is Pteridaceae, with 21 species, and Adiantum is the richest genus, with 14 species. Three species are new records for Pará State: Didymoglossum ovale, Danaea nodosa, and Pecluma hygrometrica. Furthermore, two new species were identified. One has already been described, Thyelypteris amazonica. The other new species belongs to the genus Adiantum and shall be published soon. The floristic richness of the area, associated with the taxonomic novelties, attests for its biological importance and for the necessity of increasing the efforts on research and conservation of the study area.