@Article{SzilagyiWPHRFHYLGMGB:2020:CoSpDi,
               author = "Szilagyi, Zs and Webster, Jody M. and Patterson, Madhavi A. and 
                         Hips, Kinga and Riding, Robert and Foley, Matthew and Humblet, 
                         Marc and Yokokyama, Yusuke and Liang, Liyuan and Gischler, 
                         Eberhard and Montaggioni, Lucien and Gherardi, Douglas Francisco 
                         Marcolino and Braga, Juan C.",
          affiliation = "{The University of Sydney} and {The University of Sydney} and {The 
                         University of Sydney} and {E{\"o}tv{\"o}s Lor{\'a}nd 
                         University} and {University of Tennessee} and {The University of 
                         Sydney} and {Nagoya University} and {University of Tokyo} and 
                         {University of Tennessee} and {Goethe University} and 
                         {Aix-Marseille University} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {University of Granada}",
                title = "Controls on the spatio-temporal distribution of microbialite 
                         crusts on the Great Barrier Reef over the past 30,000 years",
              journal = "Marine Geology",
                 year = "2020",
               volume = "429",
                pages = "e106312",
                month = "Nov.",
             keywords = "Reefal microbialite, Quaternary reef systems, 3D visualization, 
                         Paleo-proxy, Ocean acidification.",
             abstract = "Calcification of microbial mats adds significant amounts of 
                         calcium carbonate to primary coral reef structures that stabilizes 
                         and binds reef frameworks. Previous studies have shown that the 
                         distribution and thicknesses of late Quaternary microbial crusts 
                         have responded to changes in environmental parameters such as 
                         seawater pH, carbonate saturation state, and sediment and nutrient 
                         fluxes. However, these studies are few and limited in their 
                         spatio-temporal coverage. In this study, we used 3D and 2D 
                         examination techniques to investigate the spatiotemporal 
                         distribution of microbial crusts and their responses to 
                         environmental changes in Integrated Ocean Drilling Program (IODP) 
                         Expedition 325 (Great Barrier Reef Environmental Changes) fossil 
                         reef cores that span 30 to 10 ka at two locations on the GBR reef 
                         margin. Our GBR microbialite record was then combined with a 
                         meta-analysis of 17 other reef records to assess global scale 
                         changes in microbialite development (i.e., presence/ absence, 
                         thickness) over the same period. The 3D results were compared with 
                         2D surface area measurements to assess the accuracy of 2D 
                         methodology. The 2D technique represents an efficient and accurate 
                         proxy for the 3D volume of reef framework components within the 
                         bounds of uncertainty (average: 9.45 ± 4.5%). We found that deep 
                         water reef frameworks were most suitable for abundant microbial 
                         crust development. Consistent with a previous Exp. 325 study 
                         (Braga et al., 2019), we also found that crust ages were broadly 
                         coeval with coralgal communities in both shallow water and 
                         fore-reef settings. However, in some shallow water settings they 
                         also occur as the last reef framework binding stage, hundreds of 
                         years after the demise of coralgal communities. Lastly, 
                         comparisons of crust thickness with changes in environmental 
                         conditions between 30 and 10 ka, show a temporal correlation with 
                         variations in partial pressure of CO2 (pCO2), calcite saturation 
                         state (\Ωcalcite), and pH of seawater, particularly during 
                         the past ~15 kyr, indicating that these environmental factors 
                         likely played a major role in microbialite crust development in 
                         the GBR. This supports the view that microbialite crust 
                         development can be used as an indicator of ocean acidification.",
                  doi = "10.1016/j.margeo.2020.106312",
                  url = "http://dx.doi.org/10.1016/j.margeo.2020.106312",
                 issn = "0025-3227",
             language = "en",
           targetfile = "szilagyi_controls.pdf",
        urlaccessdate = "21 maio 2024"
}