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Biological Control of Phototrophic Biofilms in a Show Cave: The Case of Nerja Cave

AuthorsJurado, Valme ; del Rosal, Yolanda; Gonzalez-Pimentel, Jose Luis; Hermosin, Bernardo ; Saiz-Jimenez, Cesareo
KeywordsPhototrophic biofilms
show caves
Biological control
Issue Date16-May-2020
PublisherMultidisciplinary Digital Publishing Institute
CitationApplied Sciences 10 (10): 3448 (2020)
AbstractCyanobacteria and microalgae are usually found in speleothems, rocks and walls of show caves exposed to artificial lighting. These microorganisms develop as biofilms coating the mineral surfaces and producing aesthetic, physical and chemical deterioration. A wide number of physical, chemical and environmental-friendly methods have been used for controlling the biofilms with different results. Natural biological control has been suggested by some authors as a theoretical approach but without direct evidence or application. Here we report the finding of a natural biological control of phototrophic biofilms on the speleothems of Nerja Cave, Malaga, Spain. The formation of plaques or spots where the phototrophic microorganisms disappeared can be assumed on the basis of processes of predation of bacteria, amoebas and some other organisms on the phototrophic biofilms. This study aims at investigating the potentialities of the biological control of phototrophic biofilms in caves, but the originality of these data should be confirmed in future studies with a larger number of biofilm samples in different ecological scenarios.
Description13 páginas.- 5 figuras.- 2 tablas.- 39 referencias
Publisher version (URL)http://dx.doi.org/10.3390/app10103448
Identifiersdoi: 10.3390/app10103448
Appears in Collections:(IRNAS) Artículos
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