Dinophyceae do estado de Mato Grosso, MT, Brasil: municípios de Barra do Bugres, Cáceres, Chapada dos Guimarães, Porto Esperidião e Quatro Marcos

Cyanobacteria and microalgae make up a very diverse group and exhibit diverse morphological, biochemical and physiological differences. The knowledge of these organisms that inhabit epicontinental waters in Brazil is extremely heterogeneous in relation to the geographic region and the taxonomic group. Taxonomically there is much more knowledge about the algae of the South and Southeast regions of the country than there is about the algae of the North and Central-West regions. Therefore, this research presents a revised and updated knowledge of the algae that occur in the National Park of the Chapada dos Guimarães (PNCG) and surrounding areas. Our area of study is located in the state of Mato Grosso, in the center-west region of Brazil. The database was obtained from published literature related to taxonomic and ecological inventories, as well as new collections carried out in the area. The collection methods were quite diverse to cover all types of organisms, in plankton, periphyton, filamentous masses, sludge and water accumulated in bromeliads, the new collections are samples collected exclusively in the plankton. They were listed 182 taxa, distributed in 83 genera, 45 families, 11 classes and seven taxonomic divisions. In total, 89 taxa were found in the new samplings, of which nine taxa were already registered in the existing literature, so 80 taxa are new records for the region. A large number of taxa previously mentioned in the literature were not recorded in the sampled environments, most of them composed of Bacillariophyceae, Conjugatophyceae and Euglenophyceae. As well as three species of cyanobacteria of great sanitary importance were registered. Therefore, CGNP has great importance in the maintenance of aquatic biodiversity and to know this community becomes increasingly important to support management measures.

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Diversity of freshwater dinoflagellates in the State of Paraná, southern Brazil, with taxonomic and distributional notes

Cavalcante¹,

Craveiro²,

Calado³

et al. 2017

Fottea

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Dinoflagellate taxonomy has been undergoing a comprehensive review in recent decades. Knowledge on Brazilian dinoflagellate flora remains quite incomplete, particularly regarding the size of the country. This study is the first taxonomic survey of freshwater dinoflagellates in the State of Paraná, southern Brazil. Fortyone freshwater environments were sampled in Paraná and two others on the border between Paraná and Santa Catarina during 2010-2015, and 21 dinoflagellate taxa assigned to 13 genera were identified and described based on light (LM) and scanning electron (SEM) microscopy. A new combination is proposed: Parvodinium africanum var. javanicum comb. nov. Three taxa are new records for Brazilian freshwaters: Glenodiniopsis uliginosa, P. africanum var. javanicum and Tyrannodinium edax. Taxonomic and nomenclatural comments about the recorded species as well as their known distribution in Brazil are also given.

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Dinophyceae do estado de Mato Grosso, MT, Brasil: municípios de Barra do Bugres, Cáceres, Chapada dos Guimarães, Porto Esperidião e Quatro Marcos

Cited by 3 publications

References 4 publications

Ultrastructure and distribution ofAulacoseira gessneri

Ultrastructure and distribution ofAulacoseira gessneri

Inventory of cyanobacteria and microalgae cited for the National Park of the Chapada dos Guimarães (MT) and 80 new records from the region

Diversity of freshwater dinoflagellates in the State of Paraná, southern Brazil, with taxonomic and distributional notes

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