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Lanzer,Rosane. |
The family Ancylidae is represented in South America by the genera: Gundlachia Pfeiffer, 1849, Ferrissia Walker, 1903, Burnupia Walker, 1912 and Laevapex Walker, 1903. The species are caracterized using the combination of shell features and radula by scanning electron microscope, shell muscle and mantle pigmentation. The conchometry is also presented, but it does not help to species identification. The distribution of G. crequi (Bavay, 1904), G. foncki (Philippi, 1866), G. philippiana (Biese, 1948), G. obliqua (Broderip & Sowerby, 1832), G. moricandi (Orbigny, 1837), G. concentrica (Orbigny, 1835), G. radiata (Guilding, 1828), G bakeri Pilsbry, 1913, G ticaga (Marcus & Marcus, 1962), F. gentilis Lanzer, 1991, B. ingae Lanzer, 1991, L. vazi... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ancylidae; Systematic; Distribution; South America. |
Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000100018 |
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Mazzoni,Aline Correa; Lanzer,Rosane; Bordin,Juçara; Schäfer,Alois; Wasum,Ronaldo. |
Caxias do Sul hosts the second largest metal-mechanic pole in Brazil, which increases the risk of atmospheric contamination. With the aim of identifying species that might be useful as indicators of atmospheric deposition of metals, 15 species of mosses from an urban and a rural setting were analyzed and compared with specimens deposited at the Herbarium of the Universidade de Caxias do Sul. Metal concentrations (Zn, Ni, Cd, Cr, Cu and Pb) were determined using Atomic Absorption Spectrometry (AAS). The Mann-Whitney test indicated concentrations of Zn, Cu, Pb and Cr that were significantly different between the urban and rural areas. Additionally, Concentrations of Zn, Cd, Cu and Pb were significantly higher in recently collected samples. The species... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atmospheric pollution; Bioindicators; Bryophyta; Heavy metals; Rio Grande do Sul. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000300005 |
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