New distribution record and implications for conservation of the endangered Wunderlichia azulensis Maguire &amp; G.M. Barroso (Asteraceae: Wunderlichieae)

Mauad, Luana Paula; Souza-Buturi, Fátima Otavina de; Souza, Tatiane Pereira de; Nascimento, Marcelo Trindade; Braga, João Marcelo Alvarenga

doi:10.15560/10.3.706

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…In the studies of the composition and distribution of floral resources, the inselbergs constitute an excellent model due to the geographic isolation and the endemism of species. The environmental variables may be associated to the different patterns of occurrence and distribution of plant resources, especially in forests with seasonal climates such as inselbergs composed of deciduous or semi-deciduous forests (Morellato & Leitão-Filho, 1996;Nunes et al, 2005;Mauad et al, 2014).…”

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confidence: 99%

Seasonal Variation in Bee-Plant Interactions in an Inselberg in the Atlantic Forest in Southeastern Brazil

Marques¹,

Deprá²,

Gaglianone³

2018

Sociobiology

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Studies on bee-plant interactions are relevant to the understanding of temporal patterns in neotropical communities. In isolated habitats such as inselbergs little is yet known about the temporal dynamics in the availability of fl oral resources and interacting bee. In the present study, the objective is to verify the eff ect of seasonality on the bee-plant interaction in an Atlantic Forest inselberg in southeastern Brazil. The bees were sampled monthly in the dry (April/2008-September/2008) and wet seasons (October/2008-March/2009) using an entomological net. A total of 322 bees of 33 species were captured on fl owers of 34 species of plants during the year. Bees richness was similar between seasons (22 species in the wet season and 21 in the dry season), but abundance was higher in the wet season (60% of individuals) and higher diversity occurred in the dry season. Augochloropsis sp1 were the most abundant species and visited the largest number of plant species at each season. In the interaction network, plants with the highest degree were distinct between the seasons. The number of possible interactions was higher in the dry season compared to the wet season and connectance was similar; nestedness however varied between the seasons. The composition of plant and bees species was distinct between the seasons, as well as the interactions between them, mainly due to the alteration in the composition of the plant species and the change in the choice of the bees for the floral resources between the seasons.

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confidence: 99%

Seasonal Variation in Bee-Plant Interactions in an Inselberg in the Atlantic Forest in Southeastern Brazil

Marques¹,

Deprá²,

Gaglianone³

2018

Sociobiology

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“…Wunderlichia Riedel ex Benth is endemic to Brazil, and the geographic distribution of its species is restricted to xeromorphic environments (BARROSO; MAGUIRE, 1973;PIRANI, 1997;HIND;SEMIR, 1998). This includes rocky outcrops, with high solar incidence and low water availability, such as the Itaoca massif (MAUAD et al, 2014) that is the studied site. Apart from the aforementioned tuberous, woody subterranean system, W. azulensis leaves had a thick cuticle, crystal idioblasts in the mesophyll, suprastomatal chambers, and specialized cells for water storage.…”

Section: Discussionmentioning

confidence: 99%

“…Barroso, which is only found in four states: Bahia, Espírito Santo, Minas Gerais, and Rio de Janeiro. This shrubby species stands out in the vegetation islands found on the Itaoca massif inselberg (MAUAD et al, 2014;SOUZA-BUTURI, 2022) and is classified as Data Deficient (DD) by the List of Threatened Plant Species of Brazil (CNCFLORA, 2012).…”

Section: Introductionmentioning

confidence: 99%

Morfoanatomia dos órgãos vegetativos de Wunderlichia azulensis Maguire & G. M. Barroso (Asteraceae) de um afloramento rochoso no norte do Rio de Janeiro, Brasil

2022

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As espécies de Wunderlichia (Asteraceae) são endêmicas das regiões central e leste do Brasil, geralmente encontradas em afloramentos rochosos e sujeitas a altas irradiação solar e temperatura. Tais condições sugerem ocorrência de múltiplas adaptações xeromórficas em Wunderlichia azulensis. Este estudo visou caracterizar a morfoanatomia dos órgãos vegetativos de W. azulensis. Raízes, caules e folhas foram coletados de um afloramento rochoso no Maciço do Itaoca, Campos dos Goytacazes, RJ, Brasil. O material vegetal foi fixado, desidratado e emblocado em resina plástica para seções transversais. Testes histoquímicos foram realizados para identificação das classes químicas nas folhas e tricomas de W. azulensis. A morfologia dos tricomas foi avaliada em microscópio eletrônico de varredura. As raízes apresentaram uma estrutura morfoanatômica distinta que pode ser caracterizada como xilopódio. As folhas apresentaram um conjunto de atributos anatômicos adaptativos, como células epidérmicas com paredes anticlinais retas ou levemente sinuosas, alta densidade de tricomas e camada subepidérmica. Os testes histoquímicos revelaram substâncias fenólicas e óleos essenciais no mesofilo. Este estudo contribuiu para o conhecimento sobre as adaptações anatômicas das plantas rupícolas e de ambientes xeromórficos, e sugere futuros estudos para elucidação da estrutura das raízes e caules de W. azulensis.

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“…The biodiversity of these environments is directly threatened by the mining and extractivism of plants (Pessanha et al 2014). Furthermore, inselbergs in this region have been neglected in scientific studies, with few publications on their biodiversity (Aguiar & Gaglianone 2011;Pessanha et al 2014;Mauad et al 2014;Marques et al 2018), and this prevents conservation actions for inselbergs in this area.…”

Section: Introductionmentioning

confidence: 99%

Floristic composition, structure and species-area relationships on a neotropical inselberg in southeastern Brazil

et al. 2021

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The inselberg vegetation, in general, occurs in patches that vary in size, shape, number of plant species and are surrounded by a bare rock. The present study evaluated the species composition, structural analysis, and species-area relationships of vegetation patches on a neotropical inselberg in Rio de Janeiro state, southeastern Brazil. A total of 69 vascular plant species, from 31 families, were sampled in 84 vegetation patches varying in area from 0.02 to 500 m2, totaling 0.33 ha. Fabaceae and Cactaceae were the most representative families. Vellozia plicata and Selaginella sellowii presented the highest relative frequencies, relative dominances and importance values and were the most successful in the colonization of the studied rocky outcrop. A linear regression showed a positive correlation between patch size and species richness. Phanerophytes were the predominant life-form, with small patches being less rich in species and dominated by Selaginella mats. Our results suggest that the vegetation patches on the “Morro do Itaoca” inselberg currently represent a refuge against fire and other anthropogenic disturbances for many typical species of the surrounding matrix. In addition, the locality is home to endemic and endangered species, which reinforces its importance for conservation actions.

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New distribution record and implications for conservation of the endangered Wunderlichia azulensis Maguire & G.M. Barroso (Asteraceae: Wunderlichieae)

Cited by 3 publications

References 9 publications

Seasonal Variation in Bee-Plant Interactions in an Inselberg in the Atlantic Forest in Southeastern Brazil

Seasonal Variation in Bee-Plant Interactions in an Inselberg in the Atlantic Forest in Southeastern Brazil

Morfoanatomia dos órgãos vegetativos de Wunderlichia azulensis Maguire & G. M. Barroso (Asteraceae) de um afloramento rochoso no norte do Rio de Janeiro, Brasil

Floristic composition, structure and species-area relationships on a neotropical inselberg in southeastern Brazil

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