Background and aims–As a result of the description of many new species, reanalyses of
type material, and information becoming available on valve morphogenesis in small araphid …

The Andean Altiplano is characterized by its isolation, high altitude (> 3,600 m asl), and a
unique biodiversity, containing water systems such as lakes, rivers, wetlands, and salt flats …

Light microscopy (LM) and scanning electron microscopy (SEM) observations on a new
species of the genus Pseudostaurosira from a spring of the Massif Central (France) are …

A new species in the genus Planothidium is described, Planothidium bagualensis sp. nov.,
from rivers of the Rio Pardo hydrographical basin, Rio Grande do Sul, southern Brazil. This …

Cold environments are considered extreme biomes and historically thought to be barren and
unproductive. However, investigations show that some of the coldest regions in the world …

The present investigation is based on detailed taxonomical analyses combining light
microscopy (LM), scanning electron microscopy (SEM) and critical reviews of publications …

A new diatom species, Staurosirella acidophila, is described from surface sediments and
phytoplankton samples from tropical reservoirs in São Paulo, Brazil. Description of the new …

Staurosirella andino-patagonica, a new araphid diatom found in Holocene and recent
surface sediments from lakes located in the Andes and adjacent steppe of Patagonia …

Pseudostaurosira crateri sp. nov. is described from fossil material analyzed from a
Quaternary sediment core retrieved from the Colônia basin (located in the Brazilian Coastal …

Diatom and geochemical elements were used to analyze the transition from lake to peatland
in the Colônia basin, São Paulo, Brazil; local versus regional driving factors were examined …