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Primary bioreceptivity of limestones used in southern European monuments

By
Ana Z. Miller
Ana Z. Miller
Departamento de Conservação e Restauro, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Monte de Caparica, 2829-516 Caparica, Portugal
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Nuno Leal
Nuno Leal
Centro de Investigação em Ciência e Engenharia Geológica (CICEGe), Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Monte de Caparica, 2829-516 Caparica, Portugal
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Leonila Laiz
Leonila Laiz
Instituto de Recursos Naturales y Agrobiologia, IRNAS-CSIC, Av. Reina Mercedes 10, 41012 Sevilla, Spain
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Miguel A. Rogerio-Candelera
Miguel A. Rogerio-Candelera
Instituto de Recursos Naturales y Agrobiologia, IRNAS-CSIC, Av. Reina Mercedes 10, 41012 Sevilla, Spain
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Rui J. C. Silva
Rui J. C. Silva
CENIMAT/I3N and DCM, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Monte de Caparica, Portugal
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Amélia Dionísio
Amélia Dionísio
Centro de Petrologia e Geoquímica, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
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Maria F. Macedo
Maria F. Macedo
Departamento de Conservação e Restauro, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Monte de Caparica, 2829-516 Caparica, Portugal
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Cesareo Saiz-Jimenez
Cesareo Saiz-Jimenez
Instituto de Recursos Naturales y Agrobiologia, IRNAS-CSIC, Av. Reina Mercedes 10, 41012 Sevilla, Spain
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Published:
January 01, 2010

Abstract

Different Mediterranean Basin limestones, like Calcário Ançã (Portugal), Calcário Lioz (Portugal), Piedra San Cristobal (Spain), Piedra Escúzar (Spain) and Pietra di Lecce (Italy), have been widely used as building materials in the European architecture. The aim of this study was focused on biodeterioration, mainly on evaluation of the primary bioreceptivity of those materials. A set of samples was inoculated with a cultured photosynthetic biofilm under laboratory conditions. Several assessment tools were applied to monitor the colonization overtime of the different lithotypes. After 3 months of incubation the colonization occurred endolithically in some lithotypes, namely Piedra San Cristobal and Piedra Escúzar. Spectrophotometric determination of chlorophyll a was a useful analytical technique to achieve the total amount of photosynthetic biomass on rock substrates, demonstrating that Piedra Escúzar and Calcário Lioz were the highest and lowest bioreceptive lithotypes, respectively. Microscopic and image analyses were essential to understand the stone colonization process and its pattern of distribution. Physical stone parameters and exposure conditions were shown to play an important role in the establishment and development of photosynthetic colonization.

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Contents

Geological Society, London, Special Publications

Limestone in the Built Environment: Present-Day Challenges for the Preservation of the Past

B. J. Smith
B. J. Smith
Queen's University, Belfast, UK
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M. Gomez-Heras
M. Gomez-Heras
Queen's University, Belfast, UK Universidad Complutense de Madrid; Instituto de GeologÓa EconÓmica (CSIC-UCM), Spain
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H. A. Viles
H. A. Viles
Oxford University Centre for the Environment, UK
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J. Cassar
J. Cassar
University of Malta, Malta
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Geological Society of London
Volume
331
ISBN electronic:
9781862395794
Publication date:
January 01, 2010

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