Geraldo José Peixoto Ramos

Monoraphidium and Ankistrodesmus (Chlorophyceae, Chlorophyta) from Pantanal dos Marimbus, Chapada Diamantina, Bahia State, Brazil

This study aimed to identify taxa belonging to the genera Monoraphidium and Ankistrodesmus (Chlorophyceae, Chlorophyta) in two wetland areas of Pantanal dos Marimbus (Baiano and Remanso) in the Marimbus-Iraquara Environmental Protection Area, Bahia State, Brazil, and contribute to the knowledge of Chlorophyceae of Bahia State and Brazil. The materials studied, which were of periphytic and metaphytic origin, came from 64 samples collected in April and June 2011. We identified 18 taxa, 13 from Monoraphidium and five from Ankistrodesmus. Eight taxa were additions to the continental microalgae flora of Northeastern Brazil. Two taxa rarely found in Brazil were collected during the study: Monoraphidium dybowskii and M. litorale.

New additions of coccoid green algae to the phycoflora of Brazil and the Neotropics

The present study presents 11 new additions of coccoid green algae to the phycoflora of Brazil, including the first record of the genus Westellopsis for the neotropical region. Samples of periphyton and plankton were collected in two areas of the Marimbus Wetlands (the Marimbus do Baiano and Marimbus do Remanso, within the Marimbus-Iraquara Environmentally Protected Area), in the Chapada Diamantina Region of the state of Bahia, Brazil. Sample collection occurred during dry periods (April-June and August 2011) and rainy periods (October-December 2011 and February 2012). Here, we describe the taxa identified from the 56 samples collected.

Oocystis apicurvata sp. nov. (Oocystaceae, Trebouxiophyceae), a new species of green algae from Chapada Diamantina, northeast Brazil

Oocystis apicurvata sp. nov. (Oocystaceae, Trebouxiophyceae) is a new species of green algae from Chapada Diamantina, northeast Brazil. In this article, we describe a new species of coccoid green algae, Oocystis apicurvata sp. nov. based on material collected from the Marimbus Pantanal, Chapada Diamantina, Bahia State, northeast Brazil. The oppositely curved cell polar thickenings are unique for the species, and its relationships with morphological similar species are discussed.

Scenedesmaceae (Chlorophyta, Chlorophyceae) de duas áreas do Pantanal dos Marimbus (Baiano e Remanso), Chapada Diamantina, Estado da Bahia, Brasil

from two areas of the Marimbus Pantanal (Baiano and Remanso), Chapada Diamantina, Bahia State, Brazil). This work deal with the taxonomy of the Family Scenedesmaceae from Marimbus Pantanal, Environmental Protection Area Marimbus-Iraquara, Chapada Diamantina, Bahia State, Brazil. Samples from the periphyton and plankton were collected in two areas of the Marimbus Pantanal (Baiano and Remanso) during the dry season (April, June, and August 2011) and the rainy season (October, December 2011, and February 2012). This study describes 27 taxa, including 18 additions to the phycological flora of Bahia.

Euglenophyceae from bromeliad phytotelmata: new records for Bahia state and Brazil

We report 7 new records of Euglenophyceae for Bahia state and 1 for Brazil. The material was collected from bromeliad phytotelmata in 4 areas of Bahia state (Serra da Jiboia, Parque das Dunas, Fazenda Itaberaba, and Reserva Sapiranga) during 14 months from 2014 to 2016. For each species, we provide the description, geographical distribution in Brazil, microhabitat conditions, and frequency of occurrence. The richness was greatest in bromeliads in the Serra da Jiboia (5 species), followed by the Parque das Dunas (3 species), Reserva Sapiranga (2 species), and Fazenda Itaberaba (1 species).

Algae in phytotelmata from Caatinga: first record of the genus Rhopalosolen Fott (Chlorophyta) for Brazil

The first record of the genus Rhopalosolen Fott (Chlorophyta) for Brazil is presented here. Taxonomic studies on phytotelm algae are, in general, scarce, but especially are so in semi-arid regions such as the Caatinga. Here, we sampled 60 bromeliads in the Itaberaba’s municipality, Bahia state, and we identified Rhopalosolen cylindricus, a green algae species not previously recorded for Brazil. Additionally, our data provide an expansion on the known distribution of the species and their morphological and reproductive aspects as well as microhabitat conditions and frequency of occurrence.

Cosmarium bromelicola sp. nov. (Desmidiaceae, Zygnematophyceae), a new desmid species from Northeast Brazil

Cosmarium bromelicola sp. nov. is a new desmid species described from samplings carried out in bromeliad tanks (phytotelmata) from an area of rocky outcrops at Serra da Jiboia, Bahia State, Northeast Brazil. Presence of subtrapeziform cells with a deep depression at the apical region and twisted X-shaped cell in side view are the diagnostic features for the species. Relationships with the morphologically closest taxa are discussed.

First record of Parvodinium umbonatum (Stein) Carty (Peridiniaceae, Dinophyta) for northeast Brazil

This paper presents the first record of the freshwater dinoflagellate Parvodinium umbonatum (Stein) Carty (Peridiniaceae, Dinophyta) for northeast Brazil, based on samples collected in 2015 from a tank bromeliads at Serra da Jiboia, Bahia. This species was an important component in the local phytotelm community and categorized as frequent in the bromeliads of the area. A description based on morphometrical features, illustrations (LM and SEM), abiotic conditions of the stored water, and geographic distribution of P. umbonatum in Brazil are provided.