@article{Beraldi-Campesi_Arenas-Abad_Auque-Sanz_Vázquez-Urbez_Pardo-Tirapu_2016, title={Benthic diatoms on fluvial tufas of the Mesa River, Iberian Range, Spain}, volume={26}, url={https://hidrobiologica.izt.uam.mx/index.php/revHidro/article/view/505}, DOI={10.24275/uam/izt/dcbs/hidro/2016v26n2/Beraldi}, abstractNote={<p>Background. The Mesa River (MR) in the Iberian Range (Spain) displays prominent, Pleistocene to present-day fluvial<br />tufa deposits. Little of their associated microbiota has been studied to date despite the regional and historical relevance<br />of these calcareous buildups. Goals. This paper is a preliminary exploration of the diatom (Bacillariophyta) genera<br />associated with actively-growing tufa from 10 benthic environments along 24 km of the Mesa River. Methods. Brightfield<br />microscopy, as well as consultation with specialists and specialized literature was used for taxonomic classification<br />of diatoms. Results. We identified 25 diatom genera in three different types of sedimentary facies (porous and<br />moss-algae rich, dense-laminated, and tufa-free gravel). Most diatoms were raphid pennate (class Bacillariophyceae),<br />while a few were centric (class Coscinodiscophyceae) or araphid pennate (class Fragilariophyceae). They appeared as<br />integral components of the tufa structure along with cyanobacteria and other algae and mosses. Conclusions. Together<br />with previous studies on the hydrochemistry and sedimentology of the MR, our interpretations suggest that HCO3<br />-,pCO2, Ca2+, and TDIC negatively affect diatom richness and that their abundance is positively related to the presence<br />of mosses and algae.</p>}, number={2}, journal={HIDROBIOLÓGICA}, author={Beraldi-Campesi, Hugo and Arenas-Abad, Concepcion and Auque-Sanz, Luis and Vázquez-Urbez, Marta and Pardo-Tirapu, Gonzalo}, year={2016}, month={nov.}, pages={283–297} }