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	Provedor de dados ArchiMer (20) IBSS Repository (2) Biological Sciences (1) Biota Neotropica (1) BJB (1) Gayana Botánica (1) Mais... Autor Menesguen, Alain (3) Abrantes, F (2) Bougaran, Gael (2) Cosson, Richard P. (2) Gagneux Moreaux, Sindy (2) Moita, Mt (2) Moreau, Christophe (2) Moriceau, Brivaela (2) Schoefs, Benoit (2) Anderson, Robert F. (1) Andre, Luc (1) Audet, Céline (1) Babin, Marcel (1) Baines, Stephen (1) Barker, Stephen (1) Bideau, Antoine (1) Bracher, Astrid (1) Bureau, Ronan (1) Bustamante, Paco (1) Cadoret, Jean-paul (1) Mais... Palavra-chave Diatom (26) Diatomée (5) Taxonomy (3) Dinoflagellate (2) Dinoflagellé (2) Green tide (2) Marée verte (2) Mathematical model (2) Modèle mathématique (2) Morphology (2) Nitrate (2) Periphyton (2) Pigment (2) Portugal (2) Sediment (2) Sédiment (2) Ulva (2) Ulve (2) Upwelling (2) Water column (2) Mais... Tipo do documento Text (20) Info:eu-repo/semantics/article (3) Journal Contribution (2) Journal article (1) Ano 2020 (2) 2019 (4) 2018 (1) 2017 (1) 2014 (3) 2013 (1) 2012 (1) 2010 (1) 2008 (2) 2007 (2) 2006 (1) 2004 (1) 2001 (1) 1999 (2) 1998 (1) 1973 (1) 1972 (1) Mais... País France (20) Brazil (3) Ukraine (2) Chile (1) Idioma Inglês (20) Francês (5) Russo (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 26 Primeira ... 1 2 ... Última Editorial: Biogeochemistry and Genomics of Silicification and Silicifiers ArchiMer Moriceau, Brivaela; Gehlen, Marion; Treguer, Paul; Baines, Stephen; Livage, Jacques; Andre, Luc. Tipo: Text Palavras-chave: Silicon cycle; Biogenic silica; Diatom; Isotope; Bolidophycae; Sponge (Porifera); Nanostructured silica; Anthropogenic pressure. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00488/59978/63223.pdf Harmful or harmless: biological effects of marennine on marine organisms ArchiMer Falaise, Charlotte; Cormier, Patrick; Tremblay, Réjean; Audet, Céline; Deschênes, Jean-sébastien; Turcotte, François; François, Cyrille; Seger, Andreas; Hallegraeff, Gustaaf; Lindquist, Niels; Sirjacobs, Damien; Gobert, Sylvie; Lejeune, Pierre; Demoulin, Vincent; Mouget, Jean-luc. Marennine is a water-soluble blue-green pigment produced by the marine diatom Haslea ostrearia. The diatom and its pigment are well known from oyster farming areas as the source of the greening of oyster gills, a natural process increasing their market value in Western France. Blooms of blue Haslea are also present outside oyster ponds and hence marine organisms can be exposed, periodically and locally, to significant amounts of marennine in natural environments. Due to its demonstrated antibacterial activities against marine pathogenic bacteria (e.g. Vibrio) and possible prophylactic effects toward bivalve larvae, marennine is of special interest for the aquaculture industry, especially bivalve hatcheries. The present study aimed to provide new insights... Tipo: Text Palavras-chave: Diatom; Haslea ostrearia; Marennine; Marine organisms; Natural bioactive compound. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00477/58887/61443.pdf Evidence of silicic acid leakage to the tropical Atlantic via Antarctic Intermediate Water during Marine Isotope Stage 4 ArchiMer Griffiths, James D.; Barker, Stephen; Hendry, Katharine R.; Thornalley, David J. R.; Van De Flierdt, Tina; Hall, Ian R.; Anderson, Robert F.. Antarctic Intermediate Water (AAIW) and Subantarctic Mode Water (SAMW) are the main conduits for the supply of dissolved silicon (silicic acid) from the deep Southern Ocean (SO) to the low-latitude surface ocean and therefore have an important control on low-latitude diatom productivity. Enhanced supply of silicic acid by AAIW (and SAMW) during glacial periods may have enabled tropical diatoms to outcompete carbonate-producing phytoplankton, decreasing the relative export of inorganic to organic carbon to the deep ocean and lowering atmospheric pCO(2). This mechanism is known as the silicic acid leakage hypothesis (SALH). Here we present records of neodymium and silicon isotopes from the western tropical Atlantic that provide the first direct evidence of... Tipo: Text Palavras-chave: Silica leakage; Diatom; Carbon dioxide; SAMW; AAIW. Ano: 2013 URL: https://archimer.ifremer.fr/doc/00264/37526/35763.pdf Gomphonema Ehrenberg (Bacillariophyceae) in a lotic environment of the Upper Paraná River floodplain, Brazil Biological Sciences Osório, Nicolli Cristina; Tremarin, Priscila Izabel; Ludwig, Thelma Veiga; Rodrigues, Liliana. A taxonomic study of species of the genus Gomphonema Ehrenberg (Bacillariophyceae) was performed in alotic environment (Ipoitã Channel) of the Upper Paraná River Floodplain. Samplings were performed in June, September and December 2013 and February 2014. Two petioles of Eichhornia azurea (Sw) Kunth were sampled at three different sites in the channel. Twelve species and two taxonomic varieties were identified. All species identified were recorded at the sampling site 3, loca ated close to the Ivinhema River. The lowest number of taxa occurred at the sampling site 1 (9 specific and infra specific taxa), in the confluence with the Paraná River. All taxa of Gomphonema were the first record for the Upper Paraná River Floodplain. Our results emphasize the lack... Tipo: Info:eu-repo/semantics/article Palavras-chave: Diatom; Distribution area; Periphyton; Taxonomy.. Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32134 Epiphytic Eunotia (Bacillariophyceae) on Podostemum from Santa Catarina, southern Brazil, including new observations on morphology and taxonomy of some rare recorded species Biota Neotropica Cavalcante,Kaoli Pereira; Tremarin,Priscila Izabel; de Castro,Emanuela Cristina; de Azevedo Tibiriçá,Carlos Eduardo Junqueira; Wojciechowski,Juliana; Ludwig,Thelma Alvim Veiga. Eunotia is a highly diverse diatom genus in the Neotropics. Considerable morphological variability of the valve showed in several species of the genus resulted in a quite confused taxonomy. Twelve Eunotiataxa attached to Podostemum spp. were investigated using the light microscopy (LM). Additionally, scanning electron microscopy (SEM) was used in order to investigate the fine morphology of most abundant taxa. Samples were collected from four rivers from the State of Santa Catarina between March 2009 and July 2010. The freshwater diatom flora from this south Brazilian state is poorly known in relation to its neighboring states. Eunotia biseriatoides has intermediate features betweenEunotia and Perinotia, and the circumscription of these genera is discussed... Tipo: Info:eu-repo/semantics/article Palavras-chave: Diatom; Eunotiaceae; Lotic systems; Periphyton; Taxonomy. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000300119 Triceratium moreirae sp. nov. and Triceratium dubium (Triceratiaceae - Bacillariophyta) from estuarine environments of Southern Brazil, with comments on the genus Triceratium C. G. Ehrenberg BJB FERNANDES,L. F.; SOUZA-MOSIMANN,R. M. de. A new species of Triceratiaceae is described for estuarine environments of Southern Brazil. The valve of Triceratium moreirae sp. nov. is triangular with elevations bearing ocellus and a rimoportula in their basis. The valvar surface has robust pseudoloculi, circular to polygonal, each one confining a group of areolae arranged in a typical pattern. A central larger areola is surrounded by 5-8 smaller areolae, and they are poroidal with domed cribra. A septum emerges from the valvocopula, having the base reinforced by ribs and the margins folded to the innerside of the valve. The new species is compared to the closely related diatom Triceratium dubium, which has the same pattern of areolar disposition, formation of septum and pseudoloculi. The main... Tipo: Info:eu-repo/semantics/article Palavras-chave: Taxonomy; Diatom; Triceratium; Estuary; Mangrove; Southern Brazil. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000100020 Registros recuperados: 26 Primeira ... 1 2 ... Última

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