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| Registros recuperados: 12 | |
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| Hampp,Rüdiger; Cardoso,Nelsa; Fleig,Mariana; Grüninger,Werner. |
| ABSTRACT The vitality of 64 lichen species (107 individual lichen thalli) growing under different light climates in an Araucaria forest in South Brazil was analyzed by chlorophyll fluorescence. Study sites were grouped according to their local light availability under full sunlight (about 2200 µmol m-2 s-1): 1 = low light, up to 20 µmol m-2 s-1; 2 = medium light, 20 to 100 µmol m-2 s-1; and 3 = high light, more than 100 µmol m-2 s-1. Maximum quantum yield of photosystem II, as shown by Fv/Fm of dark-adapted samples, was mainly between 0.3 and 0.7, with extremes of below 0.1 and up to 0.85. On average, yields were highest with low light availability (0.66). Groups 1 and 2 were not significantly different from each other, but groups 1 and 3, as well as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Araucaria forest; Chlorophyll fluorescence; Heat dissipation; Lichens; PAM fluorometer; Photosynthetic yield. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000200188 |
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| Prieto,M.; Aragón,G.; Martínez,I.. |
| Four interesting lichens belonging to Catapyrenium, Placidium and Placopyrenium genera (Verrucariaceae) were collected for the first time in Argentina. Catapyrenium exaratum was only reported from Chile and Perú. Placidium acarosporoides was previously known from North America, Chile and South Africa. Placidium pilosellum, a widespread and common species, but little known in South America. Finally, Placopyrenium bucekii, a mediterranean-submediterranean lichen, represents a new record from South America. For these taxa we provide a brief description with emphasis on the ecological aspects and distribution maps. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lichens; Verrucariaceae; Argentina; New records. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722008000200003 |
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| Rosato,Vilma G.. |
| Lichens can affect buildings and monuments inducing a negative aesthetical impact as well as causing deterioration through mechanical and chemical processes. Given that cement mortars and concrete are the primary 20th century building materials worldwide, it is important to study lichens growing on this substrate. In a survey of different localities of Buenos Aires Province, 33 species growing on mortars and concrete were collected and identified utilizing morphological and chemical studies. Results showed that Staurothele frustulenta is a new record for Argentina, and Acarospora subcastanea is a new record for Buenos Aires Province. A high number of foliose lichens (15 species) were registered. Some species were previously only known on tree barks, but in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lichens; Mortar; Concrete; Buenos Aires; Argentina. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932006000100008 |
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| Rubio,Cecilia; Saavedra,Marcelo; Cuéllar,Mauricio; Díaz,Rodrigo; Quilhot,Wanda. |
| One hundred and thirty eight epiphytic lichen species in 40 genera, are recorded from Conguillio National Park (38°30'-38°50' S; 71°30'-71°55' W), with predominancy of typically southern South American species. Lichen diversity is high, about 9 % of the lichen mycobiota from Chile, due mainly to species of the genera Bunodophoron, Menegazzia, Nephroma,, Pannaria, Protousnea and Pseudocyphellaria. Levels of endemism are rather high (nearly 40 %); also austral and cosmopolitan species, about 19 % and 16 % respectively, are the most representative biogeographical elements in the Park. |
| Tipo: Journal article |
Palavras-chave: Endemism; Epiphytes; Lichens; Phorophytes; Wild protected areas. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432013000100008 |
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| Aptroot, A.. |
| Species diversity and local endemism is investigated in the pyrenocarpous lichen families Pyrenulaceae and Trypetheliaceae in the Malesian flora region and some peripheral regions. Species numbers in both families seem highest in Australia and Papua New Guinea, but some potentially rich regions are much undercollected. The numbers of local endemics are also highest in these areas, at least in the Pyrenulaceae, and remarkably high for lichens. Even more surprising is the near absence of species confined to two adjacent regions. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Endemism; Lichens; Pyrenulaceae; Trypetheliaceae. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/525246 |
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| LOMBARDI,JULIO ANTONIO; SALINO,ALEXANDRE; TOLEDO,FLÁVIA REGINA NASCIMENTO; MARQUES,MÁRCIA SOLANGE. |
| Organismos epifílicos em C. macrophyllus foram encontrados em duas parcelas amostradas em julho de 1996, em duas áreas com diferentes graus de perturbação pelo fogo, no Parque Estadual do Rio Doce, MG. Quatorze espécies epifílicas foram encontradas incluindo: 11 líquens, uma alga, uma hepática e um fungo. Os líquens totalizaram 81,8% das espécies na área menos perturbada e 72,7% na mais perturbada. A espécie mais abundante foi Porina epiphylla, que ocorreu em 80,8% dos forófitos da primeira área e em 97% dos forófitos da segunda. O número de folhas cobertas em cada forófito, o grau de cobertura em cada folha e a altura dos forófitos foram significativamente diferentes entre as duas áreas, enquanto que a área foliar e o número de folhas por forófito não o... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lichens; Epiphyllous organisms; Conchocarpus macrophyllus; Parque Estadual do Rio Doce. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000300012 |
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| BJERKE,JARLE W; ELVEBAKK,ARVE; QUILHOT,WANDA. |
| ABSTRACT The taxonomy and ecology of the sorediate species of Menegazzia from the southernmost regions of Chile and Argentina and the South Atlantic Islands was recently published, only with sporadic reports from the more northern regions. In the present work the distribution patterns and habitat ecology of the sorediate species are discussed, with emphasis on the area north of 48º S. Eleven species are treated. Menegazzia subpertusa, an epiphyte of sclerophyll scrubs, is recorded from South America for the first time (Chile and Argentina). Menegazzia neozelandica has a disjunct distribution in Chile, with occurrences in Fray Jorge (Fourth Region of Chile) and on Islas Juan Fernández, and along the coast south of latitude 38º S. Menegazzia kawesqarica and... |
| Tipo: Journal article |
Palavras-chave: Lichens; Biogeography; Climatic gradients. |
| Ano: 2003 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000100008 |
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| Registros recuperados: 12 | |
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