A bstract: The actual status of the progress and the main aspects of diatom studies in Brazil remain unknown. This paper describes a survey of published studies addressing material of Brazilian origin in non-marine aquatic environments. Our objectives are to (1) summarize and categorize diatom research topics, (2) to describe how related studies evolved and developed over time, as well as respective journals, (3) to identify the most studied regions and environments, and (4) to indicate the main institutions and works addressing diatom research and related interactions. We conducted a systematic review selecting 478 studies. Since the early studies, the approach on diatom fl oristic exclusively was the most frequent, even though, ecological studies have been increasing since the 2000s. However, these concentrate in the southern and southeastern. It was only in the last decades that other Brazilian regions became the setting of more extensive samplings, thus refl ecting on the interactions between authors and institutions from the collection sites. However, the actual biodiversity scenario of diatoms in Brazil still seems to be underestimated, which may infl uence further conservation measures. Finally, we indicate some suggestions aimed at fi lling the sampling gaps presented/highlighted in this study.
Study aimed at identifying and recording smooth or finely punctate cell walled Cosmarium Corda species of the low Doce river region, Espírito Santo State, Brazil. Periphytic material was collected monthly during the period October 2018 to February 2020, except for October 2019. We identified 22 taxa and analyzed the environmental conditions (trophic state, pH and total iron) in which each taxon occurred. Our study recorded 21 new records of smooth cell walled Cosmarium for Espírito Santo State and one (Cosmarium trilobulatum var. tumidum Willi Krieger & Gerloff) for Brazil.
Study aimed at identifying and recording smooth or finely punctate cell walled Cosmarium Corda species of the low Doce river region, Espírito Santo State, Brazil. Periphytic material was collected monthly during the period October 2018 to February 2020, except for October 2019. We identified 22 taxa and analyzed the environmental conditions (trophic state, pH and total iron) in which each taxon occurred. Our study recorded 21 new records of smooth cell walled Cosmarium for Espírito Santo State and one (Cosmarium trilobulatum var. tumidum Willi Krieger & Gerloff) for Brazil.
The present work aims to describe the sampling design and the methods used in the series “Periphytic algal flora of the Lower Doce River basin (Espírito Santo State, Brazil) after ore tailings flow”. This series will present the biodiversity of periphytic algae registered during the Aquatic Biodiversity Monitoring Program, Environmental Area I, carried out in the Lower Doce River basin three years after the passage of the ore tailings from Fundão dam (Mariana, Minas Gerais). Samples from the periphytic community were collected monthly, between October/2018 and February/2020, at five sampling stations in lotic environments and seven in lentic environments of the basin. These samples were fixed and the taxa will be identified and described, following specific methods. These taxa will be presented in sequential fascicles, split according to their taxonomic and morphological classification. More than 900 taxa have been recorded in this survey. This is the first taxonomic study about inland algae carried out in the Lower Doce River basin.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.