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Introduction
I’m interested in Poliphasic Taxonomy (Morphology and Molecular); Phylogeny of Eukariotic Plankton; Ecology of Marine Plankton using metabarcoding and light microscopy analysis; Bioinformatic (Analisys of metabarcoding data, Phylogeny and Molecular species delimitation models)
Publications
Publications (7)
The main primary producers of sandy beaches are unicellular algae usually hidden by their microscopic size but sometimes reaching high density in patches visible to the naked eye. These patches are among the largest known natural planktonic biomass and result from the accumulation of diatoms in the surf zone. Green patches of euglenophytes and brow...
“Surf diatoms” can form high biomass in the surf zone of sandy beaches around the world, Asterionellopsis and Anaulus being the main genera of this group in Brazil. Asterionellopsis glacialis was considered a cosmopolitan species, and taxonomic studies using molecular and morphological tools showed that A. glacialis is a complex with cryptic and se...
Several automated molecular methods have emerged for distinguishing eukaryote species based on DNA sequence data. However, there are knowledge gaps around which of these single-locus methods is more accurate for the identification of microalgal species, such as the highly diverse and ecologically relevant diatoms. We applied genetic divergence, Aut...
In many marine littoral and sublittoral benthic habitats, we find small diatoms with few features resolvable with light microscopy (LM) other than internal costae across their valves. While classically those internal costae have defined their identification and classification, the use of electron microscopy and of molecular data have started to rev...
Diatom accumulations are important phenomena that occur on many sandy beaches worldwide, but little is known about their seasonal occurrence and environmental drivers at lower latitudes. The results revealed that the diatom Anaulus cf. australis and Asterionellopsis tropicalis were accumulated on a tropical beach near the Equator (3°41′S; northeast...
The diatom Asterionellopsis glacialis sensu lato forms high-density patches in the surf zone of some sandy beaches worldwide and was until recently considered a cosmopolitan species. With the recent description of four cryptic species, the identity of specimens found in these accumulations remains uncertain. In this study, diatom patches were sampl...
Surf zone diatoms thrive in the harsh conditions of exposed sandy beaches. The patch-forming Asterionellopsis glacialis sensu lato (A. glacialis s. l.) is the main producer in a rich food chain in Cassino Beach, southern Brazil. This work aimed to verify the influence of sediment particles on the quantity and composition of carbohydrates produced i...