Vol. 064: Costa, Livia F., Carlos E. Wetzel, Horst Lange - Bertalot, Luc Ector and Denise C. Bicudo: Taxonomy and ecology of Eunotia species (Bacillariophyta) in southeastern Brazilian reservoirs. 2017. 1 fig. 1 tab. 108 pls. 302 p. Paper bd. - In Spanish.

This volume provides an image-rich documentation of themorphology and ultrastructure of Eunotia species from southeasternBrazil, including description of new taxa and restudy of originalmaterials. Moreover, it represents the first combination of taxonomicand ecological approaches to the study of Eunotia in tropical andsubtropical regions.The materials studied includes samples from distinct habitats(planktonic, periphytic and surface sediment) collected from 32reservoirs of southeastern Brazil. Eighty-seven Eunotia speciesare illustrated with light and scanning electron microscopic imageson 108 plates and compared with similar taxa. Among these,13 taxa are reported here for the first time from Brazil, and 15 newtaxa are described. Morphometric features of all taxa are describedand compared with data from the literature. The ecologicalpreferences (optima) of 19 taxa were calculated for nutrients (totalphosphorus and total nitrogen), pH and conductivity. A comprehensivesample table with reservoirs, drainage basins, geographic coordinatesand herbariumnumbers and an extensive reference list complete thevolume.The results of this work confirm the ecological preference ofthe genus for clean waters (ultraoligo- to mesotrophic). Two species(E. rhomboidea Hustedt and Eunotia maconi sp. nov.) wereassociated with eutrophic waters.This survey of Eunotia species fromsoutheastern Brazil is of general interest to all readers working ondiatoms.