000130245 001__ 130245
000130245 005__ 20240123131022.0
000130245 0247_ $$2doi$$a10.1016/j.sedgeo.2016.03.003
000130245 0248_ $$2sideral$$a94593
000130245 037__ $$aART-2016-94593
000130245 041__ $$aeng
000130245 100__ $$aBerrendero, E.
000130245 245__ $$aCyanobacterial diversity and related sedimentary facies as a function of water flow conditions: Example from the Monasterio de Piedra Natural Park (Spain)
000130245 260__ $$c2016
000130245 5203_ $$aThe River Piedra in the Monasterio de Piedra Natural Park (NE Spain) is a modern tufa-depositing river that encompasses various depositional environments that are inhabited by different cyanobacterial populations. Molecular (16S rDNA) and morphological analyses of the cyanobacteria from different facies showed that Phormidium incrustatum dominates in the fast-flowing water areas where the mean depositional rate is 1.6 cm/year. Stromatolites in these areas are formed of palisades of hollow calcite tubes (inner diameter of 6.0-7.5 µm, walls 2-12 µm thick) that formed through calcite encrustation around the filaments followed by decay of the trichomes. In contrast, in slow-flowing water areas with lower depositional rates (mean depositional rate of 0.3 cm/year), Phormidium aerugineo-caeruleum is the dominant species. In these areas, randomly oriented calcite tubes (inner diameter of 5-6 µm, walls 3-8 µm thick) formed by calcite encrustation, are found in thin and uneven laminae and as scattered tubes in the loose lime mud and sand-sized carbonate sediment. Although this species did not build laminated deposits, it gave cohesiveness to the loose sediment. In the stepped and low waterfalls, with intermediate deposition rates (mean depositional rate of 0.9 cm/year), both species of Phormidium are found in association with spongy moss and algal boundstones, which is consistent with the variable flow conditions in this setting.The calcite encrustations on the cyanobacteria from different environments exhibit irregular patterns that may be linked to changes in the calcite saturation index. The physicochemical conditions associated with extracellular polymeric substances may be more significant to CaCO3 precipitation in microbial mats in slow-flowing water conditions than in fast-flowing water conditions. These results show that flow conditions may influence the distribution of different cyanobacteria that, in turn, leads to the development of different sedimentary facies and structures in fluvial carbonate systems.
000130245 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/CGL2008-02397-BOS$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2009-09216-CLI$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2013-42867-P$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2013-44870-R
000130245 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000130245 590__ $$a2.373$$b2016
000130245 591__ $$aGEOLOGY$$b10 / 47 = 0.213$$c2016$$dQ1$$eT1
000130245 592__ $$a1.129$$b2016
000130245 593__ $$aStratigraphy$$c2016$$dQ1
000130245 593__ $$aGeology$$c2016$$dQ1
000130245 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000130245 700__ $$0(orcid)0000-0002-4212-0524$$aArenas, C.$$uUniversidad de Zaragoza
000130245 700__ $$aMateo, P.
000130245 700__ $$aJones, B.
000130245 7102_ $$12000$$2280$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Estratigrafía
000130245 773__ $$g337 (2016), 12-28$$pSediment. geol.$$tSedimentary Geology$$x0037-0738
000130245 8564_ $$s9153609$$uhttps://zaguan.unizar.es/record/130245/files/texto_completo.pdf$$yVersión publicada
000130245 8564_ $$s2801022$$uhttps://zaguan.unizar.es/record/130245/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000130245 909CO $$ooai:zaguan.unizar.es:130245$$particulos$$pdriver
000130245 951__ $$a2024-01-23-12:43:02
000130245 980__ $$aARTICLE