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Registros recuperados: 1.641 | |
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Garcia,Marinês. |
Species of Cymatosiraceae (diatoms) studied from Santa Catarina and Rio Grande do Sul littorals: Campylosira cymbelliformis, Cymatosira belgica, Cymatosirella minutissima, Plagiogrammopsis minima and Plagiogrammopsis vanheurckii) are presented with a morphological description, dimension data, distribution in the studied area and are illustrated in light microscope, and scanning and transmission electron microscopes. Superficial sand samples from the swash zone and plankton were collected from over 30 marine sandy beaches. Cymatosirella minutissima and Plagiogrammopsis minima are new recordings in Brazil widening their distribution to South America, previously being restricted to Europe. Campylosira cymbelliformis was the species most often observed in... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Psammic diatoms; Sandy beaches; South Atlantic Ocean. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000200208 |
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Maia,Valéria Cid. |
Abstract: Inventories in Brazilian restingas have been indicating that Myrtaceae are the plant family with the greatest richness of insect galls. A compilation of published data plus new records was elaborated with the aim of stablishing the number of gall morphotypes on this family in this physiognomy of the Atlantic Forest, producing a list of galled species, pointing out the predominant gall features, evaluating the taxonomical knowledge of the gallers, listing the associated fauna, and based on host plant endemisms and monophagy proposing the endemism of some galling species. Myrtaceae harbor 111 morphotypes of insect gall (about 75% induced by Cecidomyiidae, Diptera) on 25 host plant species, 15 endemic. Eugenia L. highlights as the plant genus with... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Diversity; Endemism; Plant-insect interaction. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000100601 |
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Menezes Jr.,Luis Fernando; Duarte,Ana Carolina; Novaes,Roberto Leonan Morim; Façanha,Ana Cristina; Peracchi,Adriano Lúcio; Costa,Luciana de Moraes; Fernandes,Agata de Freitas Prata Dias e; Esbérard,Carlos Eduardo Lustosa. |
Em 18 de julho de 2007, um indivíduo de Artibeus lituratus marcado com coleira plástica numerada foi recapturado no Parque Natural Municipal da Serra do Mendanha, município do Rio de Janeiro, 96 dias após ter sido capturado e marcado na Ilha de Itacuruça, no sul do Estado do Rio de Janeiro. A distância linear entre os pontos de marcação e recaptura sugere um deslocamento de no mínimo 35 km, sendo 500 m sobre o mar. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Morcego; Marcação; Recaptura; Mata Atlântica. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000200021 |
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Sigrist,Mário Sérgio; Carvalho,Claudio José Barros de. |
An important biological challenge today is the conservation of biodiversity. Biogeography, the study of the distribution patterns of organisms, is an important tool for this challenge. Endemism, the co-occurrence of several species unique to the same area, has important implications for the preservation of biodiversity, since many areas of endemism are also areas with large human impact. More rigorously defined, areas of endemism are historical units of distributional congruence of monophyletic taxa. These areas often assumed to be due to nonrandom historical events that favored conditions associated with high rates of speciation. Thus, understanding endemism and the delimitation of endemic areas has important implications for conservation. Today, most... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Historical biogeography; Endemism; PAE; South America. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000400002 |
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Lima,Silvio Felipe Barbosa; Simone,Luiz Ricardo Lopes; Guimarães,Carmen Regina Parisotto. |
Abstract A gastropod specimen of the subfamily Addisoniinae Dall, 1882 is reported here for the first time associated with an elasmobranch egg capsule from the South Atlantic Ocean. A specimen of Addisonia enodis Simone, 1996 was found living inside an egg capsule of Atlantoraja castelnaui (Miranda Ribeiro, 1907) (Arhynchobatidae Fowler, 1934) from shallow waters off southeastern Brazil. Previous studies have reported the association of members of the genus Addisonia Dall, 1882 only with the egg capsules of sharks from the family Scyliorhinidae Gill, 1862 and skates from the family Rajidae de Blainville, 1816. Other specimens of A. enodis are also here reported to occur off northeastern Brazil based on shells found in deep waters off the state of Sergipe,... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Gastropoda; Addisoniidae; Addisonia excentrica; South America; Deep sea. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000300501 |
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Barros,Marília A. S.; Morais,Camila Martins Gomes; Figueiredo,Bruna Maria Braga; Moura Júnior,Gilberto Benigno de; Ribeiro,François Fernandes dos Santos; Pessoa,Daniel Marques Almeida; Ito,Fernanda; Bernard,Enrico. |
Abstract The state of Rio Grande do Norte is considered a data gap for bat species records in Brazil. The state is also currently target of large economic projects with potential impacts on bats, especially wind farms and mining enterprises. In addition, Rio Grande do Norte has few conservation units in which there is no systematic study on bat fauna. The Nísia Floresta National Forest (NFNF), a federally protected area of 174 hectares, is located in the eastern coast of Rio Grande do Norte and corresponds to one of the last remnants of Atlantic Forest in the state, in its northernmost limits. A bat inventory was conducted in NFNF using mist nets set at ground level, from sunset to sunrise, from December 2011 to December 2012, totaling 25 sampling nights.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Rainforest; Chiropteran inventory; Conservation units; Neotropical biodiversity; Protected areas. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200303 |
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Lourenço,Luzia da Silva; Súarez,Yzel Rondon; Florentino,Alexandro Cezar. |
O conhecimento dos parâmetros populacionais para as espécies de peixes neotropicais é um grande desafio da ictiologia. No presente trabalho analisamos a relação peso/comprimento, parâmetros de crescimento, mortalidade, recrutamento e avaliamos a influência da variação sazonal da precipitação sobre o peso médio dos indivíduos e o padrão de recrutamento para duas espécies de peixes em riachos da bacia do rio Ivinhema, Estado de Mato Grosso do Sul - Brasil. As amostragens foram realizadas mensalmente de janeiro a dezembro/2002, com esforço padronizado entre os locais. A equação que descreve a relação peso total/comprimento padrão para Serrapinnus notomelas é (Peso = 0,0000191 * LS3,106) e para Bryconamericus stramineus é (Peso = 0,0000080 * LS3,193), sendo a... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Ecologia; Peixes; Relação peso/comprimento; Parâmetros populacionais. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000400003 |
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Batista,Renata Lúcia Guedes; Schiavetti,Alexandre; Santos,Urânia Amaral dos; Reis,Maria do Socorro Santos dos. |
Stranded cetaceans have scientific value and may confirm the occurrence of some species or indicate their geographical distribution in an area. The collection of biological material can also contribute to improve the knowledge of the species or populations inhabiting certain areas. This study aimed to record live or dead cetaceans found ashore along the coast of Ilhéus, Bahia State, northeastern Brazil. Data were collected through a campaign called "SOS strandings, whales, porpoises and dolphins." Between 1997 and 1999 three hundred posters and five hundred folders were distributed to beach huts, shops, fishing associations and settlements, the city's municipal government, the Brazilian Environmental Agency (IBAMA) and fire stations. During this campaign,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Occurrence; Strandings; Marine mammals; Educational campaigns. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000100003 |
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Ernesto,Matilde Vasconcelos; Liberal,Carolina Nunes; Ferreira,Aila Soares; Alves,Ana Claudia Firmino; Zeppelini,Douglas; Martins,Celso Feitosa; Pereira-Colavite,Alessandre; Creão-Duarte,Antônio José; Vasconcellos,Alexandre. |
Abstract: In detritus-based trophic systems, springtails, dung beetles, saprophagous calyptrate flies and termites consume and fragment organic matter and control populations of decomposer microorganisms, exerting a strong influence on energy and nutrient fluxes. A faunal inventory of these four groups of hexapods was performed in Serra de Santa Catarina (SSC), an area of arboreal-shrub caatinga located in the state of Paraíba, with the purpose of characterizing the assemblages of these taxa, and highlighting their unique links to the local ecosystem. Samplings were performed in May, 2014, and April, 2015, both during the rainy season. Standard sampling protocols for biodiversity inventory of the various taxa were used, including both active and passive... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coleoptera; Collembola; Diptera; Isoptera; Seasonally Dry Tropical Forests; Semiarid. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000200303 |
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Buckeridge,Marcos S.; Aidar,Marcos P.M.. |
As carbon dioxide increases on Earth atmosphere, the rise in average temperatures may provoke changes in the environment that could damage civilisation as we know it. As a result, the need to sequester carbon becomes urgent, and one of the options we have is to use the potential of the forests to do it by enhancing assimilation of CO2 through photosynthesis. However, if we consider the use of plants to increase carbon sequestration, a problem that looms is that species often acclimate and actually reduce CO2 assimilation through feedback mechanisms of the sugars that are the product. In the present article, we propose that some biochemical pathways, such as those in control of photosynthesis, carbohydrate metabolism and assimilation, and cellulose and... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Global change; Carbon Sequestration; Photosynthesis; Rain Forest; Sugar Sensing; Cellulose synthesis; Gene therapy. |
Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000100002 |
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Ramalho,Werther Pereira; Andrade,Murilo Sousa; Matos,Lucicléia Railene Assis de; Vieira,Lisandro Juno Soares. |
Despite the historical knowledge on amphibians of the Purus River basin, basic information on assemblages is fragmented, with gaps in knowledge existing at various scales, which limits conservation strategies. This study provides information on the composition, richness and abundance of the amphibian fauna in varzea environments and floating meadows of the oxbow lakes of the Middle Purus River between the Boca do Acre and Pauiní municipalities, Amazonas, Brazil. We sampled six oxbow lakes using forty-seven 200-meter transects, distributed among the "floating meadows," "high varzea" and "low varzea," from April to January 2014. We recorded 59 species, with the family Hylidae being predominant. This amphibian fauna represents approximately 19% of the species... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Floodplain; Flood pulse; Diversity; Conservation. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000100201 |
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Registros recuperados: 1.641 | |
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