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Bruxel,Juliane; Jasper,André. |
O levantamento das espécies da família Cactaceae na Bacia Hidrográfica do Rio Taquari, RS, Brasil foi realizado com o objetivo de conhecer a diversidade e a distribuição desta importante família botânica, uma vez que não existem dados sobre a mesma para a região. Foram encontradas 11 espécies distribuídas em cinco gêneros: Cereus hildmannianus K. Schumann, Lepismium cruciforme (Vellozo) Miquel, Lepismium warmingianum (K. Schumann) Barthlott, Lepismium houlletianum (Lemaire) Barthlott, Lepismium lumbricoides (Lemaire) Barthlott, Rhipsalis floccosa ssp. pulvinigera (G.A. Lindberg) Barthlott & N.P. Taylor, Rhipsalis teres (Vellozo) Steudel, Rhipsalis cereuscula Haworth, Parodia ottonis (Lehmann) N.P. Taylor, Parodia haselbergii (Haage ex. Ruempler)... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cactaceae; Diversidade; Bacia Hidrográfica do Rio Taquari; Levantamento. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062005000100008 |
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Osterkamp,Isa Carla; Lara,Daniela Müller de; Gonçalves,Thaís Alves Pereira; Kauffmann,Marjorie; Périco,Eduardo; Stülp,Simone; Machado,Neli Teresinha Galarce; Uhl,Dieter; Jasper,André. |
ABSTRACT Charcoal is widely accepted as evidence of the occurrence of palaeo-wildfire. Although fossil charcoal remains have been used in many studies, investigation into the anatomical changes occurring during charring are few. The present study analyses changes in selected anatomical characters during artificial charring of modern wood of three species of the genus Araucaria (i.e. Araucaria angustifolia, Araucaria bidwillii and Araucaria columnaris). Wood samples of the studied species was charred under controlled conditions at varying temperatures. Measurements of anatomical features of uncharred wood and artificial charcoal were statistically analysed. The anatomical changes were statistically correlated with charring temperatures and most of the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Araucariaceae; Araucaria angustifolia; Araucaria bidwillii; Araucaria columnaris; Charcoal; Wood. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000200198 |
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Salvi,Juliana; Jasper,André; Ricardi-Branco,Fresia; Bernardes-de-Oliveira,Mary Elizabeth C.; Guerra-Sommer,Margot. |
The genus Lycopodites, which encompasses the herbaceous forms of the lycopsids, presents broad time and spacial distribution during the Paleozoic in the Northern Hemisphere, with its initial records dating from the European Devonian. As to Gondwanan Paleozoic, to this moment, only Lycopodites amazonica Dolianiti had been reported for the Amazonian Middle Devonian (Curuá Group). Thus, the specimens reported in this study such as Lycopodites sp., coming from sedimentary rocks of the Itararé Subgroup, São Paulo State, and Lycopodites riograndensis sp. nov., collected in Rio Bonito Formation, Rio Grande do Sul, represent the oldest fertile forms recorded for Gondwana and the first ones to be described for the Paraná Basin. Its presence in layers, deposited... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopodites sp.; Lycopodites riograndensis sp. nov.; Gondwana; Lower Permian; Paraná Basin. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000300015 |
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