Nova espécie de Canistrum E. Morren (Bromeliaceae) do Brasil

Wanderley, Maria das Graças Lapa

doi:10.1590/s2236-89062008000400005

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…Some species found in the area are of Wanderley (2008: 537) that has a disjunct occurrence: it is found in the capões (forest islands) of the PERP and ca. 600 km north in Bahia State, in the Abaíra municipality (Wanderley 2008). Aechmea bromeliifolia var.…”

Section: Conservationmentioning

confidence: 99%

An illustrated checklist of Bromeliaceae from Parque Estadual do Rio Preto, Minas Gerais, Brazil, with notes on phytogeography and one new species of Cryptanthus

Versieux¹,

Louzada²,

Viana³

et al. 2014

Phytotaxa

577

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A checklist of the 14 genera and 34 species of Bromeliaceae from the Parque Estadual do Rio Preto in São Gonçalo do Rio Preto municipality, Minas Gerais state, southeastern Brazil, is presented. The Tillandsioideae was the most diverse subfamily and was found to be concentrated in rocky field areas. Bromelioideae is also a species rich subfamily, but its taxa have shown a preference to forested areas and savannas at lower altitudes. Pitcairnioideae is highlighted by its level of endemism, but has only four species. Cryptanthus micrus, a new species found in this area is described and illustrated. Our cluster analysis indicated that the Rio Preto State Park has a Bromeliaceae flora more similar to that from Pico do Itambé and Grão Mogol State Parks. Taxa like Dyckia glandulosa, Orthophytum itambense and Vriesea medusa, which were previously considered to be endemic to Pico do Itambé, now have their area of occurrence extended to Rio Preto. These new occurrences highlight the importance to create a corridor joining these neighboring reserves to connect populations of narrowly ranged or rare species. In this work we present pictures of 19 species in their habitats within the park, and we hope that these illustrations will help in the identification and conservation of these taxa.

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Section: Conservationmentioning

confidence: 99%

An illustrated checklist of Bromeliaceae from Parque Estadual do Rio Preto, Minas Gerais, Brazil, with notes on phytogeography and one new species of Cryptanthus

Versieux¹,

Louzada²,

Viana³

et al. 2014

Phytotaxa

577

View full text Add to dashboard Cite

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“…Probably, the association of this species with valley bottoms may be linked to soil humidity ( Klein, 1979), as suggested for other species of the genus ( Poulsen and Balslev, 1991;Kennedy, 2000 apud Wanderley andVieira, 2002;Costa et al, 2005). Therefore, C. communis seem to fit quite well to the pioneer group due to its occurrence preferentially on illuminated environments, soil seed bank persistence (Souza, SCPM.…”

Section: Soil Coveragementioning

confidence: 86%

Structure of the herb stratum under different light regimes in the Submontane Atlantic Rain Forest

Lima

Gandolfi

2009

Braz. J. Biol.

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This study aimed to characterize the structure of the herb stratum in relation to light availability in the Submontane Atlantic Rain Forest at the Carlos Botelho State Park, SP, Brazil. Forty-one 10 x10 m plots were established under the closed canopy (18 plots), small and medium canopy gaps (11) and large canopy gaps dominated by Guadua tagoara (Ness) Kunth (12). Inside each plot, the line intercept method was applied to assess soil coverage as an estimate of density of herb stratum vegetation. Hemispherical photographs were taken at the centre of the plots to evaluate the annual light regime. Overall, Calathea communis Wanderley and S. Vieira had the greater mean coverage, followed by woody seedlings, ground ferns and other herbs (mainly, Araceae, Acanthaceae, Amaranthaceae and Cyperaceae). There were strong correlations among several groups of the herb stratum, such as the negative correlations between woody seedlings with the coverage of C. communis and with rocks. The analysis of the hemispherical photographs confirmed the difference among environments that led to significant differences in the soil coverage of the herb stratum vegetation but woody seedlings. For instance, C. communis showed great coverage in large gaps while ferns were more abundant in small and medium gaps and in the understorey. Other herbs, in turn, demonstrated bigger soil coverage in small and medium gaps. Although this study represents a rough assessment of the structure and composition of the herb stratum, the results found here illustrated the evident relation between herb species density and the environmental variation promoted by changes on canopy structure and topography.Keywords: Calathea communis, canopy gaps, ground herbs, light. Estrutura do estrato herbáceo sob diferentes regimes de luz na Floresta Pluvial Atlântica SubmontanaResumo O objetivo deste estudo foi caracterizar a estrutura do estrato herbáceo em relação à disponibilidade de luz na Floresta Pluvial Atlântica Submontana do Parque Estadual Carlos Botelho, SP, Brasil. Para tanto, foram instaladas 41 parcelas de 10 x 10 m em ambientes sob o dossel fechado (18 parcelas), em clareiras pequenas e médias (11), e em clareiras grandes com dominância de Guadua tagoara (Ness) Kunth (12). Em cada parcela a percentagem de cobertura de solo, avaliada através do método de interceptação em linha, foi usada como estimativa da densidade da vegetação do estrato herbáceo. Fotografias hemisféricas foram tomadas ao centro de cada uma das parcelas para avaliar o regime anual de luz nos ambientes. No geral, a maior média obtida foi para Calathea communis Wanderley e S. Vieira, seguida por plântulas de regenerantes lenhosos, pteridófitas terrestres e outras ervas (principalmente Araceae, Acanthaceae, Amaranthaceae e Cyperaceae). Houve ainda fortes correlações entre vários grupos do estrato herbáceo, como as correlações negativas entre plântulas de regenerantes com a cobertura de C. communis e de rochas. A análise das fotografias hemisféricas confirmou a existência de ambientes com...

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“…Identification and Imaging of Fly and Plant Taxa. Plant species were identiÞed using Wanderley and Vieira (2002), Braga (2005), Groppo and Pirani (2005), and Lorenzi and Souza (2008). Drosophilids were identiÞed using Malogolowkin (1953), Burla…”

Section: Methodsmentioning

confidence: 99%

Drosofilídeos (Diptera) associados a flores e fungos da mata atlântica: identificação de novas espécies e evolução do cromossomo Y

Vaz¹

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The analyses of the Y chromosome gene content in 12 Drosophila species whose genome were sequenced in 2008 showed that the Y is not well conserved among species and is currently in the process of acquiring genes, contradicting the current model of sex chromosome evolution that describes the Y as a degenerate homolog of the X, in constant gene loss. This initial result prompted the study of additional Drosophila species and related genera. One of the difficulties in obtaining specimens is the fact that drosophilids from many taxonomic groups are not available in stock-centers and little is known about their ecology. Many species are found in nature associated with fungi, flowers, or plant exudates, and are rarely attracted to baits with fermented banana, the usual method of collecting drosophilids. The objectives of this study were: I) analysis of the Y chromosome gene content of species from "unusual" substrates, II) determination of drosophilids breeding / larval development sites, and III) analysis of the base composition of genes in the Y chromosome. The results emphasize the Y-chromosome dynamic nature of genes acquisition and loss in the family Drosophilidae, including a few cases of whole chromosome movements (p.e., Y-autosome fusion). We describe a new species, Drosophila calatheae, whose larvae develop in flowers of the genus Calathea (Marantaceae). Drosophila I4 (to be described) also breeds in these flowers. None of these two species could be included in a known taxonomic group of species. A phylogeny with two Y-chromosome genes (kl-3 and kl-5) suggests that they belong to the virilis-repleta radiation and D. calatheae is related to the bromeliae group. Analysis of base composition of Y-chromosome genes shows that they are AT-rich when compared to autosomal genes, and this difference is proportional to the time that a gene has been in the Y.

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Nova espécie de Canistrum E. Morren (Bromeliaceae) do Brasil

Cited by 4 publications

References 2 publications

An illustrated checklist of Bromeliaceae from Parque Estadual do Rio Preto, Minas Gerais, Brazil, with notes on phytogeography and one new species of Cryptanthus

An illustrated checklist of Bromeliaceae from Parque Estadual do Rio Preto, Minas Gerais, Brazil, with notes on phytogeography and one new species of Cryptanthus

Structure of the herb stratum under different light regimes in the Submontane Atlantic Rain Forest

Drosofilídeos (Diptera) associados a flores e fungos da mata atlântica: identificação de novas espécies e evolução do cromossomo Y

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