16 research outputs found
Seasonality of reproduction of epiphytic bryophytes in flooded forests from the CaxiuanĂŁ National Forest, Eastern Amazon
Diversity of bryophytes in priority areas for conservation in the Atlantic forest of northeast Brazil
Oncidiinae (Orchidaceae) on the great curve of the Xingu River, Pará state, Brazil
Abstract Among the studies on Orchidaceae in the Amazon, none comprised the region of the Great Curve of the Xingu River, located in the lower Xingu river. The aim of this study was to inventory and taxonomically study the species of Oncidiinae (Orchidaceae) in the Great Curve of the Xingu River, Pará state. The floristic survey was performed in the area of the Belo Monte hydroelectric plant, in the Vitória do Xingu municipality, centrally inserted in the called Great Curve of the Xingu River. Botanical collections were accomplished between June 2011 and December 2013. A total of 27 species of Oncidiinae, distributed in 15 genera, was inventoried in the study area. Notylia Lindl. and Trichocentrum Poepp. & Endl. were the richest genera, with five and four species, respectively, followed by Erycina Lindl., Ionopsis Kunth, Lockhartia Hook., Macradenia R.Br., and Ornithocephalus Hook., with two species each. The remaining eight genera are represented by a single species each in the study area. Morphological descriptions, a key for taxonomic identification, illustrations, and comments on distribution, ecology, phenology and morphology are provided for all inventoried species
Bryophytes in fragments of Terra Firme forest on the great curve of the Xingu River, Pará state, Brazil 1 Part of Master's Dissertation of the first author.
Abstract Microclimatic conditions of tropical forest favour the high richness of bryophytes, which by being sensitive to environmental changes, are important indicators of habitat conditions. The aim of this study was to determine the richness and species composition of the bryophyte flora in fragments of terra firme forest on the great curve of the Xingu River, Pará state, Brazil. The collections were made in August and September 2012 in 14 fragments, in which were installed two plots per fragment, one at the edge and one inside, measuring 10 × 10 m each. The results showed 77 species in 45 genera and 18 families. Lejeunea setiloba Spruce and Marchesinia brachiata (Sw.) Schiffn. are new records for Pará state. The richness families in this study were the ones typically found in tropical forest surveys. A high richness of rare species in comparison to common ones, a pattern usually observed for plants in tropical forests was not reported in this study, probably due to historical fragmentation and disturbance in the area. The richness and species composition were determined mainly by the physiognomic characteristics of the studied forest fragments
Bryophytes in fragments of Terra Firme forest on the great curve of the Xingu River, Par\ue1 state, Brazil 1 Part of Master\u27s Dissertation of the first author.
Briófitas (Bryophyta e Marchantiophyta) das cangas da Serra dos Carajás, Pará, Brasil
Bryophytes in fragments of Terra Firme forest on the great curve of the Xingu River, Pará state, Brazil 1 Part of Master's Dissertation of the first author.
Synopsis of the Brazilian moss flora: checklist, distribution and conservation
Conselho Nacional de Desenvolvimento CientĂfico e TecnolĂłgico (CNPq)A revised moss checklist for Brazil recognizes 892 species of mosses in 255 genera and 70 families. Endemic taxa comprise 23% of the known flora. The Brazilian distribution, altitudinal range in the country, and world distribution are provided for all species. A list of 383 excluded species is provided.9341732277334Conselho Nacional de Desenvolvimento CientĂfico e TecnolĂłgico (CNPq)Conselho Nacional de Desenvolvimento CientĂfico e TecnolĂłgico (CNPq