@article{ruwer_rodrigues_2018,  title={Subfossil and periphytic diatoms from the upper Paraná river, Brazil: last ~1000 years of a transition period},  volume={45},  ISSN={2236-8906},  url={https://doi.org/10.1590/2236-8906-89/2017},  DOI={10.1590/2236-8906-89/2017},  number={3},  journal={Hoehnea},  publisher={Instituto de Pesquisas Ambientais},  author={Ruwer, Daiane Trevisan and Rodrigues, Liliana},  year={2018},  month={Jul},  pages={431–449} }