geosciences Article Hydrochemistry and Diatom Assemblages on the Humpata Plateau, Southwestern Angola Elena Robakiewicz 1,2,3,*, Daniela de Matos 4,5,6,7 , Jeffery R. Stone 8 and Annett Junginger 2,3 1 Department of Geosciences, University of Connecticut, Beach Hall, 354 Mansfield Rd #207, Storrs, CT 06269, USA 2 Department of Geosciences, Universität Tübingen, 72072 Tübingen, Germany;
[email protected] 3 Senckenberg Center for Human Evolution and Paleoenvironment (S-HEP), 72072 Tübingen, Germany 4 Institute for Archaeological Sciences, Universität Tübingen, 72072 Tübingen, Germany;
[email protected] 5 Instituto Terra e Memória, Largo Infante Dom Henrique, Museu de Arte Pré-Histórica, 6120-524 Mação, Portugal 6 Centro de Geociências da Universidade de Coimbra, 3000-456 Coimbra, Portugal 7 Instituto Politécnico de Tomar, Quinta do Contador, 2300-313 Tomar, Portugal 8 Department of Earth and Environmental Systems, Indiana State University, Terre Haute, IN 47809, USA;
[email protected] * Correspondence:
[email protected] Abstract: Diatoms, a common siliceous alga, are effective paleoclimate and pollution indicators. They have been used in northern, eastern, and southern Africa as such because of well-documented ecologies of many taxa. In southwestern Africa, however, the country of Angola lacks similar modern assemblage studies. To close this gap, modern diatoms were sampled across four water bodies on the Humpata Plateau in southwestern Angola in the dry season of July 2019, with in-situ measurements Citation: Robakiewicz, E.; de Matos, of pH, conductivity, and total dissolved solids and laboratory analysis of cations and anions. This D.; Stone, J.R.; Junginger, A.