First records of Zygnematales (Zygnematophyceae, Streptophyta) for the state of Bahia, Brazil

Abstract

This study presents the first taxonomic inventory of the order Zygnematales in the Litoral Norte Environmentally Protected Area, in the state of Bahia, Brazil. Fifty samples of planktonic and periphytic material were collected, from lotic and lentic environments, during the summer (January-March) and winter (June-August) of 2009. We identified 18 taxa distributed among five genera (Cylindrocystis, Mougeotia, Netrium, Spirogyra, and Spirotaenia). Of those 18 taxa, eight were new additions to the Brazilian desmid flora: Mougeotia calcarea; Mougeotia elegantula; Spirogyra gracilis; Cylindrocystis crassa var. elliptica; Cylindrocystis brebissonii var. minor; Cylindrocystis brebissonii var. turgida; Netrium digitus var. parvum; and Netrium oblongum var. oblongum. The geographical distributions of ten taxa were extended to include northeastern Brazil.

Novos registros de táxons dos gêneros Euastrum Ehrenb. ex Ralfs e Micrasterias C. Agardh ex Ralfs (Zygnematophyceae, Desmidiaceae) para a Bahia e o Brasil

“…Considerando a extensão territorial da Bahia e a sua extensa bacia de drenagem, são poucos os estudos sobre desmídias no Estado (apenas 16). Cinco investigações foram realizados na Área de Proteção Ambiental Litoral Norte, descrevendo 41 táxons de Closterium e Spinoclosterium (Oliveira et. al.…”

Fitoplancton De Un Humedal Tropical Somero De Zonas Bajas Y Su Relación Con Variables Fisicoquímicas

“…La determinación taxonómica se realizó siguiendo las claves y descripciones de Alves da Silva y Schüler (2007), Bellinger y Sigee (2015), Komárek et al (2014), Novelo (2012), Oliveira et al (2013) y Wehr y Sheath (2003). Además, se soportó la identificación de las algas con la base de datos electrónica Algaebase (Guiry y Guiry, 2019) y Diatombase (Kociolek et al, 2019).…”