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handle: 10261/76386
[FR]: L'exposition des mosaïques romaines d'Italica, après la fouille archéologique, a causé la colonisation et détérioration par espèces de lichens, bryophytes et plantes. Les bryophytes poussent sur les mosaïques, spécialement celles qui sont a l'abri de la lumière solaire, où les mortiers sont détériorés, brisant la cohésion avec les tessères. Les bryophytes sont éliminés par nettoyage avec brosse, ce qui est considéré comme un procédé impropre, parce qu'il est la meilleur façon de garantir la dispersion des organismes sur les mosaïques, puisque les mousses peuvent se reproduire a partir des fragments de la plante originel.
[EN]: The exposure of the Roman remains of Italica, after excavation, has resulted in colonization and deterioration by pioneering species of lichens, bryophytes, and alliedd vascular plants. Bryophytes have extensively invaded the mosaics, especially those protected from direct sunlight, heavily damaging the mortars, and breaking off the cohesion with the tesserae. Mistakenly, for mosaic maintenance, the bryophytes are removed by brushing, which is considerad as one of the best ways of dispersion of these organisms onto the mosaics, because mosses can reproduce vegetatively from parent plant fragments.
9 pages, 4 figures, 1 table, 5 references.-- Trabajo presentado en el citado Congreso, celebrado del 15-18 junio 1992, en Lisboa, Portugal.
This work has been supported by the C.E.C. through contract STEP-CT90-0107, and C.I.C.Y.T. (PAT91-1056).
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