Checklist das Poaceae de áreas inundáveis e inundadas do nordeste do estado do Pará

Rocha, Antônio Elielson Sousa da; Lins, Alba Lúcia Ferreira de Almeida

doi:10.1590/s0044-59672009000400005

Cited by 6 publications

(5 citation statements)

References 9 publications

(8 reference statements)

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“…Digitaria violascens, Echinochloa crus-galli, Hymenachne amplexicaulis, Leersia hexandra, Megathyrsus maximus, Panicum condensatum, Panicum dichotomiflorum, Panicum trichanthym, Setaria parviflora e Steichisma laxum são espécies de ampla distribuição em áreas úmidas do Brasil (Junk 1970;Silva et al 1983;Irgang et al 1984;Junk 1986;Pott et al 1986;Allem & Valls 1987;Oliveira et al 1988;Pedralli et al 1993a;Pedralli et al 1993b;Prado et al 1994;Irgang & Gastal Júnior 1996;Gastal Júnior & Irgang 1997;Pott & Pott 1997;Rosa & Irgang 1998;Pott & Pott 2000;Bove et al 2003;Rodrigues da Silva & Filgueiras 2003;Santos 2007;Terneus 2007;Amaral et al 2008;D´Angelo 2009;Rocha & Lins 2009;Araújo et al 2010;Alves et al 2011;Pott et al 2011;Medeiros et al 2012;Ferreira et al 2013;Moura Júnior et al 2013;Oliveira et al 2013;Rosseto & Vieira 2013;Shirasuna et al 2013;Bovini et al 2014;Rodrigues & Filgueiras 2014), na América do Sul (León & Young 1996;Arbo & Tressens 2005) ou ambientes associados ao Rio Paraná (Neiff 1986;Lewis et al 1987;…”

Section: Resultsunclassified

Poaceae em uma planície de inundação no Brasil: distribuição espacial e conservação

et al. 2018

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ResumoAiming to improve the botanical and ecological knowledge of the area and therefore contribute to its conservation, we studied the distribution pattern of the grasses of PIAP and its environs. For the grasses of PIAP we considered: phytophysiognomy, light exposure, photosynthetic pathway, water condition of the substrate where they preferably occur, classification of the morphovegetation, and the absolute and relative frequencies. The results show that the species are distributed according to the geomorphological configuration of the PIAP, which are presented here in two schematic profiles.

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Section: Resultsunclassified

Poaceae em uma planície de inundação no Brasil: distribuição espacial e conservação

et al. 2018

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“…The lower permeability might have influenced the levels of Poaceae diversity and richness. Paspalum pulchellum, Mesosetum loliiforme, and Coleataenia stenodes, species typically found in humid areas (Rocha & Lins 2009), stand out among the dominant species in these savannas.…”

Section: Discussionmentioning

confidence: 99%

Poaceae communities in the savannas of the Amazon Estuary in Brazil

Rocha

Miranda²

2014

Acta Bot. Bras.

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We sought to identify the major environmental factors that affect the diversity and distribution of Poaceae in the savannas of the Amazon Estuary. The study was conducted across seven areas of savanna in the Amazon Estuary, within which 160 subplots of 1 m 2 each were established within four 10 × 100 m plots. Soil samples were collected at a depth of 0-20 cm. A total of 24 Poaceae species were recorded. Only two were common to all of the areas studied (Axonopus aureus P. Beauv. and Anthaenantia lanata (Kunth) Benth). The edaphic factors that most influenced the Poaceae in the savannas studied were organic matter, coarse sand, and silt contents. Conversely, rainfall had no effect. The floristic and structural characteristics of the savannas studied suggest that Poaceae communities exhibit low diversity and a peculiar distribution pattern in which a group of species predominate in a given stretch, creating a homogeneous physiognomy. Our findings suggest that the structure of these communities is related to a gradient of soil texture, the percentage of Axonopus and Trachypogon coverage increasing and decreasing, respectively, along that gradient. These data can contribute to the understanding of plant-soil interactions in this environment, promoting strategies for conservation, management, and revegetation.

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“…Species of this family are the most frequently reported in various studies on aquatic flora in the Pantanal (Pivari et al, 2008;Kufner, 2009;Rodrigues, 2010) as well as in other flooded regions Guimarães et al, 2002;Pott et al, 2006;Pitelli et al, 2008;Cervi et al, 2009;Kozera et al, 2009;Mormul et al, 2010;Ferreira et al, 2011). The high incidence of grass species in floodplains is probably related to the tolerance to seasonal variations imposed by dry and flood periods, and even being able to present an epiphytic habit, allowing the establishment of other aquatic species (Pivari et al, 2008;Kozera et al, 2009;Rocha and Lins, 2009). Corroborating some surveys of aquatic plants in the Upper Paraguay River Basin, the families Asteraceae, Convolvulaceae, Onagraceae, Polygonaceae and Fabaceae were the most species-rich (Pivari et al, 2008;Kufner, 2009;Rodrigues, 2010;Pott et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Structure of aquatic vegetation of a large lake, western border of the Brazilian Pantanal

et al. 2012

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Studies on Neotropical aquatic macrophytes have increased in recent decades, however species richness in wetlands of South America is far from being fully known. In addition, studies having an ecological approach are scarce in the Pantanal. Rapid assessments are essential for gaining knowledge of the biodiversity in the region. This study was performed in five sites of the Baía do Castelo, the western border of the Brazilian Pantanal, which included wild-rice patches, floating mats and floating meadows. At each site, plots of 0.5 × 0.5 m were set (n = 137), species of aquatic macrophytes were identified, their coverage was measured and the plot depth was estimated. We recorded 57 species in 26 families, of which Poaceae was the richest. The most frequent and abundant species was Commelina schomburgkiana; the second most frequent was Oryza latifolia,followed by Leersia hexandra, Enydra radicans and Pityrogramma calomelanos. The latter species was second in cover, followed by Pontederia rotundifolia, Eichhornia azurea, E. crassipes and Enydra radicans. These five species and C. schomburgkiana (the most abundant) together represent more than half of the coverage on the lake. Pontederia rotundifolia, Ludwigia helminthorrhiza, Pistia stratiotes, E. azurea, E. crassipes, Enydra radicans and Panicum elephantipes were strongly associated with deeper areas, while Oryza latifolia, Leersia hexandra and Salvinia auriculata were prevalent in shallow areas. Pityrogramma calomelanos, Ludwigia nervosa, Ipomoea alba, Cayaponia podantha, Polygonum acuminatum, Rhynchanthera novemnervia and Ludwigia leptocarpa were highly correlated with floating meadows. The structure of the habitat, natural dynamics and zonation of aquatic vegetation in the Baía do Castelo seems to be influenced by a variation in water levels, which promotes spatial segregation, most likely due to competition and/habitat preference.Keywords: aquatic macrophyte, Upper Paraguay basin, phytosociology, Pontederiaceae, wetland. Estrutura da vegetação aquática em uma grande lagoa, borda oeste do Pantanal brasileiro ResumoEstudos sobre macrófitas aquáticas Neotropicais aumentaram nas últimas décadas; todavia, a riqueza de espécies em áreas úmidas da América do Sul está longe de ser plenamente conhecida. Além disso, trabalhos com abordagem ecológica são escassos no Pantanal. Por essa razão, levantamentos rápidos são essenciais para o conhecimento sobre a biodiversidade. Este estudo foi realizado em cinco pontos na Baía do Castelo, borda oeste do Pantanal brasileiro, os quais incluíram arrozal, camalotal e baceiros. Em cada ponto, foram estabelecidas parcelas 0.5 × 0.5 m (n = 137), onde foram identificadas as espécies de macrófitas aquáticas, estimada a cobertura e tomada a profundidade.

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Checklist das Poaceae de áreas inundáveis e inundadas do nordeste do estado do Pará

Cited by 6 publications

References 9 publications

Poaceae em uma planície de inundação no Brasil: distribuição espacial e conservação

Poaceae em uma planície de inundação no Brasil: distribuição espacial e conservação

Poaceae communities in the savannas of the Amazon Estuary in Brazil

Structure of aquatic vegetation of a large lake, western border of the Brazilian Pantanal

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