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Descripción
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| Cemeteries are part of the cultural heritage of urban communities. They also have architectural value because of the presence of important funerary monuments that must be subject to conservation, which in turn means the need to study the biological agents that impact and affect them. The growth and development of these agents will depend on factors such as light, temperature and humidity. Therefore, it is assumed that monuments will be more or less susceptible to biofilm formation and biological attack according to their exposition. The goal of this contribution is to assess the development of biofilms on funerary monuments in La Plata (Argentina) cemetery with different structural compositions and to study the influence of different factors such as light, temperature, humidity and wind on biofilm growth. Samples of the biofilm adhered to monuments were collected and analyzed by conventional microbiological techniques, and bacteria were also identified by PCR and 16S rDNA sequencing. For chemical analyses of structural materials, samples were observed under Scanning Electron Microscopy (SEM) and analyzed with X-ray dispersion analysis (EDX). "Pseudomonas putida", "Pseudomonas" sp. and "Bacillus cereus" were identified. We also found "Caloplaca citrina", "Xanthoria fallax", and "Lecanora albescens" mainly on cement, mortar and plaster. The same species colonized granite. Cyanobacteria of order Chroococcales and Bdelloid rotifers were also recorded. Cement materials, sandstone and calcareous rocks, were all susceptible to biodeterioration caused by acids produced by microbial activity. | |
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Internacional
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Si |
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Nombre congreso
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IBBS-14, 14th International Biodeterioration and Biodegradation Symposium |
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Tipo de participación
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960 |
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Lugar del congreso
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S. Alessio Siculo, Messina, Italy |
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Revisores
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Si |
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ISBN o ISSN
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0964-8305 |
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DOI
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Fecha inicio congreso
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06/10/2008 |
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Fecha fin congreso
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11/10/2008 |
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Desde la página
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77 |
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Hasta la página
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77 |
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Título de las actas
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IBBS-14 Abstracts Book |