Encontrados 27 documentos, a visualizar página 1 de 3
Flora of Baturité, Ceará: a Wet Island in the Brazilian Semiarid
Silvera, Andréa Pereira; Loiola, Maria Iracema Bezerra; Gomes, Vaneicia dos Santos; Lima-Verde, Luiz Wilson; Oliveira, Teógenes SennaThe biota of the humid mountain ranges of the Brazilian semiarid is still poorly understood. In order to fill this scientific gap, we carried out an extensive survey along altitudinal ranges (400m – 1,000 m) on both the windward and the leeward slopes of the Baturité Mountain Range, in the state of Ceará state. We registered 400 plant species and 92 families. The Myrtaceae (36 spp.), Fabaceae (25 spp.), Rubiace...
Flora and Annual Distribution of Flowers and Fruits in the Ubajara National Par...
Silveira, Andréa Pereira; Menezes, Bruno Sousa de; Loiola, Maria Iracema Bezerra; Lima-Verde, Luiz Wilson; Zanina, Dalva Neta eAlthough the conservation of tropical biodiversity depends on protected areas, there is still a very large ‘gap’ of knowledge on the flora of Brazilian reserves, especially in the Northeast region of Brazil. Field and herbarium surveys of the phanerogamic flora of the Ubajara National Park, located on the Brazilian Northeast, were made and analyses on phenology and dispersal syndromes were performed. 418 taxa (...
Assembly rules in a resource gradient: competition and abiotic filtering determ...
Menezes, Bruno Sousa; Martins, Fernando Roberto; Carvalho, Ellen Cristina Dantas; Souza, Bruno Cruz; Silveira, Andrea PereiraThe relative importance of different community assembly mechanisms varies depending onthe environment. According to the stress-dominance hypothesis (SDH), assembly mecha-nisms range from strong abiotic filtering to competition as the environment becomes morefavourable. Most evidence for the SDH comes from studies in gradients of conditions (i.e.abiotic environmental factors that influence the functioning of org...
New data on the stem and leaf anatomy of two conifers from the Lower Cretaceous...
Batista, Maria Edenilce Peixoto; Silva, Delmira da Costa; Sales, Marcos A. F.; Sá, Artur A.; Saraiva, Antonio A. F.; Loiola, Maria Iracema BezerraPseudofrenelopsis and Brachyphyllum are two conifers that were part of the Lower Creta-ceous (Aptian) taphoflora of the Crato Formation, Araripe Basin, northeastern Brazil. Theformer genus includes, so far, P.capillata and indeterminate species, whilst the latter ismainly represented by B.obesum, the most common plant megafossil recovered from thatstratigraphic unit. Here, the stem and leaf anatomy of Pseudofre...
Paleodistribution of Neotropical species of Erythroxylum (Erythroxylaceae) in h...
Cordeiro, Luciana Silva; Araújo, Francisca Soares de; Koch, Ingrid; Simões, André Olmos; Martins, Fernando Roberto; Loiola, Maria Iracema BezerraVariation in environmental conditions during the Quaternary period served as important fi lters for the maintenance of vegetation types and for determining the composition of the current biota. We analyzed oscillations in the distributions of diff erent vegetation types in Brazil during the Quaternary period using species of the genus Erythroxylum (Erythroxylaceae) because of the vast heterogeneity of habitats ...
Incidence and diversity of arbuscular mycorrhizal fungi and successor herbaceou...
Andrade, Denis Juvenço; Weber, Olmar Baller; Crisóstomo, Lindbergue Araújo; Silva, Cristiane Figueira da; Loiola, Maria Iracema BezerraThe purpose of this study was to evaluate the diversity of herbaceous plants and arbuscular mycorrhizal fungi following the cultivation of sunflower (Helianthus annuus L., cv. BRS 321) irrigated with produced water. The sunflower plants were irrigated during three successive cycles with different types of water: produced water obtained through simple filtration (PWSF), and secondly, produced water treated by re...
Borreria apodiensis (Rubiaceae: Spermacoceae), a new species from Ceará and Rio...
Souza, Elnatan Bezerra de; Miguel, Laila Mabel; Cabral, Elsa Leonor; Nepomuceno, Francisco Álvaro Almeida; Loiola, Maria Iracema BezerraA new species of Borreria (Rubiaceae) from Chapada do Apodi in northeastern Brazil is described and illustrated. A distribution map, illustrations, a conservation assessment, a key to morphologically similar taxa and images of the seeds and pollen grains are provided.
Composição florística de uma comunidade savânica no Rio Grande do Norte, nordes...
Oliveira, Ana Cláudia Pereira de; Penha, Alessandra dos Santos; Souza, Raquel Franco de; Loiola, Maria Iracema Bezerra(Floristic composition of a savanna community in Rio Grande do Norte, northeastern Brazil). In the municipality of Rio do Fogo (in 1976) a savanna community was registered by radar that, until now, has not been studied in loco. Some questions were asked about this community: Is this area Cerrado, floristically? What is the phytogeography of plant species in this community? Do rare, endemic or endangered species...
Flora da Paraíba, Brasil: Combretaceae
Loiola, Maria Iracema Bezerra; Rocha, Emerson Antonio; Baracho, George Sidney; Agra, Maria de FátimaThis taxonomic treatment of the genus Solanum is part of the “Flora da Paraíba” project which aims to identify and catalogue the species of the local flora. Botanical collections, field observations and morphological studies were done for identification, description and botanical illustration of the plant species, also supported by the literature and analysis of Brazilian and foreign herbaria, plus specimens fr...
Flora da Paraíba, Brasil: Erythroxylaceae Kunth
Loiola, Maria Iracema Bezerra; Agra, Maria de Fátima; Baracho, George Sidney; Queiroz, Rubens Teixeira deA taxonomic treatment of the Erythroxylaceae family was undertaken as part of the project “Flora da Paraíba” which aims to identify and catalogue the species of the local flora. Botanical identification and illustrations were supported by morphological studies and bibliography, analysis of the types and specimens from national and international herbaria, complemented by field observations. Thirteen species of E...