Journal
INTERNATIONAL MICROBIOLOGY
Volume 24, Issue 4, Pages 573-591Publisher
SPRINGER
DOI: 10.1007/s10123-021-00193-x
Keywords
Cave; Paleolithic art; Microclimate; Aerobiology; Ascomycota; Basidiomycota
Categories
Funding
- CRUE-CSIC
- Springer Nature
- Consejeria de Universidades, Igualdad, Cultura y Deporte del Gobierno de Cantabria
- Spanish Ministry of Innovation and Science [CGL2016-75590-P, PID2019-110603RB-I00/AEI/10.13039/501100011033]
- ERDF funds
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Airborne microorganisms can pose significant conservation challenges in caves with Paleolithic art. Understanding cave aerodynamics is crucial for assessing and controlling the origin of airborne fungi. Ventilation during winter plays a critical role in increasing Basidiomycota spores in cave air, while Ascomycota spores are prevalent in unventilated areas, often associated with insects and bats in the cave. The combination of aerobiological and microclimate data is essential for evaluating external climatic influences and developing effective conservation strategies for cultural heritage in cave environments.
Airborne microorganisms can cause important conservation problems in caves with Paleolithic art and therefore the knowledge of cave aerodynamic is essential. La Garma Cave (Cantabria, Spain), an exceptional archaeological site with several levels of galleries interconnected and two entrances, presents a complex atmospheric dynamics. An approach including aerobiological sampling together with microclimate monitoring was applied to assess the factors controlling the origin of airborne fungi. Here we show that winter ventilation is critical for the increasing of Basidiomycota spores in the cave air and the highest concentrations were found in the most ventilated areas. On the contrary, Ascomycota spores prevailed in absence of ventilation. Besides, most Ascomycota were linked to insects and bats that visit or inhabit the cave. The combination of aerobiological and microclimate data constitutes a good approach to evaluate the influence of external climatic conditions and design the most suitable strategies for the conservation of cultural heritage in the cave environment.
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