
Janaína Gomes-da-SilvaInstituto de Pesquisas Jardim Botânico do Rio de Janeiro · Botany
Janaína Gomes-da-Silva
PHD Biological Sciences (Botany)
About
29
Publications
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Introduction
I am interested in all aspects of phylogenetic systematics of Angiosperms, methodology of cladistic analysis and historical biogeography. My major research projects are on systematics, biogeography and conservation.
Additional affiliations
January 2014 - August 2016
August 2018 - present
August 2016 - July 2020
Education
January 2000 - December 2005
Publications
Publications (29)
Abstract—
Vriesea is the second-largest genus of Bromeliaceae, with more than 280 species. Although the genus is traditionally circumscribed as a natural group, all phylogenetic analysis undertaken indicates its polyphyletic origin. Several groups of Vriesea
species are difficult to define taxonomically based on morphological characters only, incl...
Societal Impact Statement
Biological samples and their associated information are an essential resource used by scientists, governments, policymakers, practitioners and communities to ensure that biodiversity can be appropriately protected and sustainably used. Yet, considering the enormous task of documenting the vast numbers of as‐yet‐unknown pla...
The disparity in species richness among clades of angiosperms is partly explained by differences in evolutionary and biogeographic processes; however, part of this imbalance remains elusive. The relationships between species diversification
and key innovations, as well as the impact of clade age, are also predicted to explain such disparities. This...
The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiver-sity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxo-nomic impediment to biodiversity research and conservation planning. The taxonomic impedi...
The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impedime...
The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impedime...
The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impedime...
The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiver-sity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxo-nomic impediment to biodiversity research and conservation planning. The taxonomic impedi...
Background
Herbarium collections and the data they hold are the main sources of plant biodiversity information. These collections contain taxonomical and spatial data on living and extinct species; consequently, they are the fundamental basis for temporal and spatial biogeographical studies of plants. Mega projects focused on providing digital and...
The urge to organise the world around us is an essential part of human nature. Naming and categorising enable us to store and access information ef ciently. The need to name and categorise extends to the natural world and, in particular, to living organisms. The science underpinning this area of knowledge is called Taxonomy, and is as old as humani...
Brazil has high levels of biodiversity and has received strong criticism for the increasing country-wide deforestation that threatens it. Although a significant percentage of land area in Brazil is protected, the areas are insufficient and unevenly distributed. Many studies have contributed to the biogeographical knowledge of Brazilian flora, but n...
The genera Deuterocohnia, Dyckia, and Encholirium are recognized as the xeric clade Pitcairnioideae. More than 220 xeric species of this group occur in South America in the Andean region, the Chacoan subregion, and the South American Transition Zone. The species recently and rapidly diversified, and such phylogenetic relationships are difficult.
Th...
We performed a phylogenetic study of Encholirium (Bromeliaceae, Pitcairnioideae) to test if this Brazilian endemic genus is monophyletic
when including additional species and morphological characters compared to previous studies. Extensive fieldwork to increase the
sampling of Encholirium and evolutionary analyses were conducted. Species of Fostere...
Epiphytes are hyper‐diverse and one of the frequently undervalued life forms in plant surveys and biodiversity inventories. Epiphytes of the Atlantic Forest, one of the most endangered ecosystems in the world, have high endemism and radiated recently in the Pliocene. We aimed to (1) compile an extensive Atlantic Forest data set on vascular, non‐vas...
The Global Strategy for Plant Conservation (GSPC) was established by the Conference of Parties in 2002 to decrease the loss of plant diversity, reduce poverty and contribute to sustainable development. To achieve this overarching goal, the GSPC has established a series of targets, one of which is to ensure that plant diversity is well understood, s...
The taxonomic delimitation of Vriesea is challenging because several diagnostic traits of the genus are shared with other genera in Tillandsioideae. The genus has no unique morphological features that distinguish it from other taxa. Earlier phylogenetic studies suggested a polyphyletic status of this genus, but taxon sampling was limited, and tests...
Vriesea, with about 280 species distributed in two sections, Vriesea and Xiphion, is recognized as polyphyletic.
We provide the cladistic analysis based on morphological data, with emphasis on species from eastern Brazil,
its main center of diversity, which emerged as a monophyletic group in previous molecular and combined
analysis. The data matrix...
The genus Vriesea Lindl. comprises about 290 species distributed into two sections: V. sect. Vriesea and V. sect. Xiphion. The genus is recognized as polyphyletic and is historically associated with Tillandsia L., differing from it mainly due to the presence of petal appendages. Here we focus our efforts on the Vriesea taxa in its main center of di...
Generic delimitation in Tillandsioideae has been widely discussed over the last past decades, being frequent
changes in generic level. Despite the numerous changes at the generic and infrageneric levels in Tillandsioideae there is
not yet a study bringing together the history of systematic of the tillandsioid genera. Given the conservation signific...
The Vriesea corcovadensis (section Vriesea) group consists of 11 species occurring exclusively in the Brazilian Atlantic Forest. This group is defined by the presence of polystichous and distichous flowers, utriculiform rosettes, presence of stolons, and linear-triangular leaf blades with a maximum width of 1.5 cm. We present a taxonomic revision b...
Physalis L. (Solanaceae) is represented by twelve species in South America
and three species in Rio Grande do Sul state, with a ruderal behavior, all of
them allied to subgenus Rydbergis. Two species, P. angulata L. and P.
pubescens L, share an angulated stem, blue thecae and capitate stigma.
Physalis angulata can be identified by being glabrescent...
(Solanaceae in the Parque Estadual de Itapuã, Viamão, Rio Grande do Sul, Brazil). Solanaceae family in the Parque Estadual de Itapuã is represented by nine genera (Brunfelsia L., Calibrachoa La Llave & Lex., Capsicum L., Cestrum L., Nicotiana L., Petunia Juss., Salpichroa Miers, Solanum L. and Vassobia Rusby) and twenty seven native species. Solanu...