Abstract

NIEVA, Ángela; SEELIGMANN, Claudia  and  MAIDANA, Nora. Periphytic diatoms of a mountain river (Tucumán, Argentina). Lilloa [online]. 2019, vol.56, n.1, pp.64-91. ISSN 0075-9481.  http://dx.doi.org/10.30550/j.lil/2019.56.1/5.

In the framework of the study of the periphytic diatomoflora (epiliton and epiphyton) of the San Javier River (Tucumán, Argentina) we identified 40 genera and 115 infrageneric taxa of which 5 are new records for Argentina: Gomphonema lippertii, Navicula densilineolata, Placomeis neoexigua, Stauroneis adamsiana y Ulnaria ramesi. In addition, 6 are new records for Tucumán: Encyonema neomesianum, Halamphora normanii, Hantzschia abundans, Navicula antonii, N. rostellata y Placoneis symmetrica. We observe that the increase in conductivity produced by the water input from a tributary caused a decrease in the specific richness of the epiphyton and in the abundance of both communities.

Keywords : Bacillariophycaeae; conductivity; river; salinity.

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