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| Registros recuperados: 51 | |
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| Silva,Joan Bruno; Germano,Shirley Rangel. |
| In the state of Paraíba, Brazil, there is an abundance of rocky outcrops, which are typical elements of the semi-arid landscape. Those outcrops provide refuge to species with morphological adaptations to stressful climates and to rare communities of plants, including bryophytes. Nevertheless, there have been no studies of bryophytes in such habitats in the state. Therefore, this work aimed to inventory bryophytes on two outcrops in the municipality of Puxinanã, in Paraíba, addressing some of the ecological aspects of survival in xerophytic environments. Samples were collected once every two weeks from February 2010 to May 2011. The usual techniques of bryophyte sampling and herbarium preservation were employed. We recorded 21 bryophyte species (six... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bryophyte; Inselberg; Morphological adaptations; Nonvascular flora; Semi-arid; Northeastern Brazil. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400023 |
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| Aptroot,André; Oliveira,Maria Machado de; Cáceres,Marcela Eugenia da Silva. |
| The sterile corticolous crustose lichen Protoparmelia capitata (Ascomycota: Parmeliaceae), recently described for southeastern North America, is reported as a new record for South America in the Serra da Jiboia mountain range, near the municipality of Santa Teresinha, in the state of Bahia, in northeastern Brazil. This species is locally common and is probably closely related to P. isidiata, which has the same pigmentation and medullary chemistry, P. capitata differing from P. isidiata in that the former features soredia rather than isidia. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alectoronic acid; Sorediate species; New record; Serra da Jiboia; Santa Teresinha; Bahia; Northeastern Brazil; Caatinga; Atlantic Forest. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300006 |
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| OLIVEIRA,PAULO V.; RIBEIRO,ANA MARIA; OLIVEIRA,ÉDISON V.; VIANA,MARIA SOMÁLIA S.. |
| This paper deals with xenarthrans osteoderms assigned toDasypus aff. D. novemcinctus,Euphractus sexcinctus and Cabassous sp. The material was collected in subsurface, from 0.10 to 0.60 m in the Urso Fóssil Cave, Parque Nacional de Ubajara, State of Ceará, northeastern Brazil. The ages of sediment samples from levels 4 and 5 (depths of 0.40 and 0.50 m) were determined by thermoluminescence technique, and indicated ages of 8,000 and 8,200 years BP for each layer respectively. The presence in these layers of early Holocene xenarthrans taxa can contribute to the understanding of the biotic evolution of the northwest region of Ceará during the last 10,000 years. Two of the three identified taxa still occur in the region: Dasypus novemcinctus andEuphractus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mammals; Dasypodidae; Holocene; Cave; Parque Nacional de Ubajara; Northeastern Brazil. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100147 |
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| TOLEDO-LIMA,GUILHERME S.; MACARIO,PHOEVE; LYRA-NEVES,RACHEL M. DE; TEIXEIRA,BRUNO P.; LIMA,LUIZ A.F. DE; SUGLIANO,GABRIEL O.S.; TELINO-JÚNIOR,WALLACE R.. |
| In northeastern Brazil, the reduction of the natural forest cover to a series of small, isolated fragments has had negative consequences for the local avian fauna, in particular, a loss of the more specialized species, while the populations of some generalists have tended to increase. The present study focuses on the composition and trophic groups of a bird community on a farm in the northeastern Brazilian state of Alagoas. Monthly surveys were conducted between November 2008 and October 2009, based on mist-netting and systematic observations. Overall, 112 species were recorded, of which 76 were associated with the two forest fragments surveyed, while all the others were observed exclusively in the surrounding matrix of pasture and orchards. The bird... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Birds; Northeastern Brazil; Trophic groups. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301207 |
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| Chiglino,Leticia; Gaucher,Claudio; Sial,Alcides N.; Ferreira,Valderez P.. |
| We report for the first time the occurrence of organic-walled microfossils in Ediacaran limestones and marls of the Frecheirinha Formation, Ubajara Group, and the first Precambrian acritarchs so far reported for northeastern Brazil. The assemblage of the Frecheirinha Formation represents a low-diversity microflora comprising Leiosphaeridia, Lophosphaeridium and subordinated Bavlinella (=Sphaerocongregus). Their thermal alteration index (TAI) between 4+ and 5, suggests metamorphic temperatures exceeding 200-250°C. Higher temperatures are probably related to intruding granitic plutons (Meruoca, Mucambo). Reported δ13C values of carbonates of -3.5 ‰ VPDB (Vienna-Peedee Belemnite) at the base, passing up section into a positive plateau of up to +3.7 ‰, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acritarchs; Ediacaran; Neoproterozoic; Northeastern Brazil. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200635 |
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| Athiê-Souza,Sarah M.; Melo,José Iranildo Miranda de; Silva,Luan Pedro da; Santos,Leidiana Lima dos; Santos,Juliana Silva dos; Oliveira,Luciana dos Santos Dias de; Sales,Margareth Ferreira de. |
| Abstract: Specimens of phanerogamic plants from the Catimbau National Park, located in northeastern Brazil, were collected during extensive fieldwork and analyzed together with information gathered from the specialized literature. A total of 613 species was recorded, belonging to 366 genera and 85 families. The largest families were Fabaceae, Poaceae, Euphorbiaceae, Asteraceae, Convolvulaceae, Malvaceae, Myrtaceae, Apocynaceae, Malpighiaceae, and Cyperaceae, comprising almost 60% of the species. The level of endemism found was below that projected in the literature, as only four known species are unique to the study area. The area is, however, home to a varied flora with high richness and numerous rare or threatened species, demonstrating the importance of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Diversity; Flora; Northeastern Brazil. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000100302 |
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| Coelho-Lima,Alcéster Diego; Jucá,Marcelo Almeida De Sousa; Fonseca,Ellen Beatriz Fontes da; Medeiros,Leticia Cely Vieira de; Soares,Pamella Barbara Coutinho; Cunha,Paulo Victor Araujo; Passos,Daniel Cunha. |
| Abstract: The zoologist Dr. José Santiago Lima-Verde (1945-2019) made a number of major contributions to the field of animal biology in the northeastern Brazil, in particular through his research with snakes. While employed as a professor at Escola Superior de Agricultura de Mossoró, currently the Universidade Federal Rural do Semi-Árido, Prof. Lima-Verde established a herpetological collection which remained forgotten for a number of decades. In the present study, we describe the revitalization of this collection, which included the updating of the identification of the species and the compilation of the metadata on the collection, which is now named the Coleção Herpetológica Lima-Verde. We catalogued 80 specimens representing 30 species, including 23... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Caatinga; Northeastern Brazil; Scientific Collections; Semiarid. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100205 |
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| Silva,Thaynara de Sousa; Wanderley,Maria das Graças Lapa; Melo,José Iranildo Miranda de. |
| Abstract: Aechmea is one of the largest genera of Bromeliaceae, having more than 250 species, and Brazil is its principal center of endemism. We taxonomically examined the species of Aechmea encountered in Paraíba State in northeastern Brazil. Our analyses were based on specimens collected during the present study, as well as examinations of local and regional herbaria collections. Eleven species were encountered to State: Aechmea aquilega, A. chrysocoma, A. costantinii, A. emmerichiae, A. eurycorymbus, A. fulgens, A. leptantha, A. mertensii, A. nudicaulis, A. patentissima, and A. werdermannii. Of those taxa, seven are endemic to northeastern Brazil and five are included within one of the threatened categories according to IUCN criteria, two of them being... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bromelioideae; Conservation; Flora; Northeastern Brazil; Taxonomy. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000300305 |
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| São-Mateus,Wallace Messias Barbosa; Cardoso,Domingos; Jardim,Jomar Gomes; Queiroz,Luciano Paganucci de. |
| This study presents a taxonomic account of the Papilionoideae (Leguminosae) from remnants of Atlantic Forest in the Brazilian state of Rio Grande do Norte. We recorded 68 species and 32 genera within the following tribes: Phaseoleae (11 genera/24 species), Dalbergieae (9/20), Swartzieae (3/3), Millettieae (2/4), Sophoreae (2/2), Abreae (1/1), Crotalarieae (1/3), Desmodieae (1/7), Indigofereae (1/3), and Sesbanieae (1/1). Ten genera and 32 species are newly recorded for the flora of Rio Grande do Norte. The most species-rich genera were Desmodium (7 species), Centrosema (5), Stylosanthes (5), Aeschynomene (4), and Macroptilium (4). Herbaceous and shrubby species have predominated with 60% (41 spp.) of the total species diversity, following by the vines and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fabaceae; Floristics; Northeastern Brazil; New records. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400315 |
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| Registros recuperados: 51 | |
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