RT Journal Article
T1 Effects of combined increase in temperature and CO2 concentration on the weathering activity of phototrophic organisms inhabiting granitic rocks and its implications in terms of cultural heritage conservation
A1 Fuentes Alonso, Elsa
A1 Pérez Velón, Diana
A1 Prieto Lamas, Beatriz
K1 Phototrophic organisms
K1 Photosynthetic efficiency
K1 Biodeterioration
K1 Temperature
K1 CO2
AB The increase in CO2 concentration and temperature observed in the current context of climate change may cause changes in the behavior of phototrophic organisms colonising stone cultural heritage, leading to undesirable changes in terms of biodeterioration. In this study, we examined the combined effect of both parameters (18°C or 24°C and ambient or high CO2 concentration) on the physiological state of organisms and on granite weathering through experiments involving a green alga (Bracteacococcus minor) and a cyanobacterium (Synechocystis sp. PCC 6803) grown in medium containing granite. The results revealed an increase in the green algae population relative to the cyanobacteria at lower temperature and a reduction in biomass and efficiency during the early stages of culture development at the higher temperature. In addition, although rock weathering was favoured by modification of the solution equilibrium through cation uptake by the organisms no significant differences in response to environmental conditions were detected.
PB Elsevier
SN 1296-2074
YR 2025
FD 2025-03-27
LK https://hdl.handle.net/10347/43330
UL https://hdl.handle.net/10347/43330
LA eng
NO Fuentes, E., Pérez-Velón, D., & Prieto, B. (2025). Effects of combined increase in temperature and CO2 concentration on the weathering activity of phototrophic organisms inhabiting granitic rocks and its implications in terms of cultural heritage conservation. Journal of Cultural Heritage, 73, 185–194. 10.1016/j.culher.2025.03.003
NO This study was partly financed through project ED431C 2022/09 (Xunta de Galicia). E. Fuentes was financially supported by a Postdoctoral Fellowship-Contract ED481B-2023-083 (Xunta de Galicia). D. Perez-Velón was financially supported by project 16_IN606D_2021_2608973 (Xunta de Galicia).
DS Minerva
RD 29 abr 2026