Diatomáceas (Bacillariophyceae) em marismas no sul do Brasil

Silva, Juliana Gonçalves da; Torgan, Lezilda Carvalho; Cardoso, Luciana de Souza

doi:10.1590/s0102-33062010000400008

Cited by 19 publications

(13 citation statements)

References 22 publications

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“…This distribution is in agreement with that found in the literature and cited in the introduction. Silva et al 2010 found one valve of it in sediments from the Lagoa dos Patos mouth (31°59'18.60''S; 52°14'58.50''W) and in the Westerschelde estuary (The Netherlands) it occurs in silty sediments (low dynamic environments) and plankton samples (Muylaert & Sabbe, 1999 (Figures 5, 6). The valves are round to elliptical lanceolate in shape, 3.0 -9 mm long and 1.5 -3 mm wide (n ¼ 10).…”

Section: Resultsmentioning

confidence: 98%

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Taxonomy, morphology and distribution of Cymatosiraceae (Bacillariophyceae) in the littorals of Santa Catarina and Rio Grande do Sul

Garcia

2016

Biota Neotrop.

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Species of Cymatosiraceae (diatoms) studied from Santa Catarina and Rio Grande do Sul littorals: Campylosira cymbelliformis, Cymatosira belgica, Cymatosirella minutissima, Plagiogrammopsis minima and Plagiogrammopsis vanheurckii) are presented with a morphological description, dimension data, distribution in the studied area and are illustrated in light microscope, and scanning and transmission electron microscopes. Superficial sand samples from the swash zone and plankton were collected from over 30 marine sandy beaches. Cymatosirella minutissima and Plagiogrammopsis minima are new recordings in Brazil widening their distribution to South America, previously being restricted to Europe. Campylosira cymbelliformis was the species most often observed in plankton samples and Plagiogrammopsis minima in sediment samples. Cymatosira belgica and Plagiogrammopsis minima were recorded as abundant species in Mariscal, Quatro Ilhas and Zimbros reaching a relative frequency of 9.6%. The study adds new morphological data to some taxa as the presence of rimoportula on C. minutissima and one row of poroids on copulae of P. minima, these features being in agreement with Cymatosiraceae diagnosis. Keywords: biodiversity, psammic diatoms, sandy beaches, South Atlantic Ocean.GARCIA, M. Taxonomia, morfologia e distribuic¸ão de Cymatosiraceae (Bacillariophyceae) nos litorais de Santa Catarina e Rio Grande do Sul. Biota Neotropica. 16(2): e20150139-. http://dx.doi.org/10.1590/ 1676-0611-BN-2015-0139Resumo: As espécies de Cymatosiraceae (diatomá cea) encontradas no litoral de Santa Catarina e Rio Grande do Sul: Cymatosira belgica, Campylosira cymbelliformis, Cymatosirella minutissima, Plagiogrammopsis minima e Plagiogrammopsis vanheurckii sã o apresentadas com descric¸õ es morfoló gicas acompanhadas de dados referentes a dimensõ es, distribuic¸ã o na á rea de estudo e ilustrac¸õ es em microscopia ó ptica, e eletrô nica de varredura e de transmissã o. As amostras da areia superficial foram coletadas na regiã o de varrido das ondas e de plâ ncton em mais de 30 praias arenosas. Cymatosirella minutissima and Plagiogrammopsis minima sã o registros novos para o Brasil ampliando sua distribuic¸ão para a América do Sul antes restritas à Europe. Campylosira cymbelliformis foi a espécies mais frequentemente observada nas amostras de plâ ncton and Plagiogramma minima in the sediment samples. Cymatosira belgica e Plagiogrammopsis minima sã o registradas como espécies abundantes em Mariscal, Quatro Ilhas e Zimbros alcanc¸ando a freqü ência relativa má xima de 9,6%. Este estudo adiciona novos dados morfoló gicos para alguns tá xons com a presenc¸a de uma rimopó rtula em C. minutissima e uma fileira de poró ides nas có pulas de P. minima, estando estas características de acordo com a diagnose da Cymatosiraceae. Palavras-chave: Biodiversidade, diatomáceas psâmicas, Oceano Atlântico Sul, praias arenosas.

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Section: Resultsmentioning

confidence: 98%

“…It is herein for the first time recorded for the Rio Grande do Sul littoral at Cassino beach. Although Silva et al (2010) has cited it to Lagoa dos Patos estuary, its ocurrence in this area maybe is related to the proximity with the international port of Rio Grande.…”

Section: Final Discussionmentioning

confidence: 99%

Taxonomy, morphology and distribution of Cymatosiraceae (Bacillariophyceae) in the littorals of Santa Catarina and Rio Grande do Sul

Garcia

2016

Biota Neotrop.

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“…Distribution: Seminavis strigosa seems to be widely distributed in brackish environments, with records in Wadi Islet and Ayun Musa oasis in the Sinai (Hustedt, 1949), Mesolonghi lagoon, western Greece (Danielidis and Mann, You et al 2008You et al 26-38 5-8 16-20 2003, and Southern Brazil (Silva et al, 2010). Amphora twenteana have been reported to freshwater environments, such as Twente Canal, Netherlands (Krammer, 2003) and Xinjiang, Northwestern China (You et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

New records of amphoroid diatoms (Bacillariophyceae) from Cachoeira River, Northeast Brazil

Cavalcante¹,

Tremarin²,

Ludwig³

2014

Braz. J. Biol.

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Amphoroid taxa have been revised in recent decades. Many species formerly assigned to Amphora have been transferred to other recently proposed genera, as Seminavis (Naviculaceae) and Halamphora (Catenulaceae). In Brazil, there are few studies focused on amphoroid taxonomy. This study presents a taxonomic investigation of five uncommon amphoroid taxa from Brazilian diatom flora: Seminavis pusilla, S. strigosa, Amphora ectorii, Halamphora ghanensis and Halamphora sp. Seminavis strigosa is identical in valve morphology and morphometrical data to Amphora twenteana, and its synonymy is proposed. Seminavis pusilla, poorly found in Brazilian waters, has expanded its distribution. Halamphora ghanensis is a new record to American continent while Amphora ectorii are new to Brazilian aquatic systems. Halamphora sp. has distinct ultrastructural features in relation to similar species and is probably new for science.Keywords: Amphora, Bahia state, coastal river, Halamphora, Seminavis. Novas ocorrências de diatomáceas anforóides (Bacillariophyceae) no Rio Cachoeira, nordeste do Brasil ResumoTáxons anforóides foram revisados nas últimas décadas. Várias espécies, previamente atribuídas a Amphora, foram transferidas para outros gêneros recentemente propostos, tais como Seminavis (Naviculaceae) e Halamphora (Catenulaceae).No Brasil, há poucos estudos com foco na taxonomia das diatomáceas anforóides. Este estudo apresenta uma investigação taxonômica de cinco táxons do grupo, incomuns na diatomoflora brasileira: Seminavis pusilla, S. strigosa, Amphora ectorii, Halamphora ghanensis e Halamphora sp. Seminavis strigosa é idêntica em morfologia e métrica da valva à Amphora twenteana, e a sinonimização destas espécies é proposta. Seminavis pusilla, raramente encontrada em águas brasileiras, tem a sua distribuição ampliada. Halamphora ghanensis é um novo registro para o continente Americano, enquanto Amphora ectorii é uma novidade para sistemas aquáticos brasileiros. Halamphora sp. possui características ultraestruturais distintas em relação a espécies similares e provavelmente seja uma nova espécie para a ciência.

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“…So far, most studies concentrated on phytoplankton at Patos Lagoon [17][18][19][20][21][22][23][24], Tramandaí-Armazém Lagoon [25][26][27][28][29], and Peixe Lagoon [30][31][32][33][34]. Regarding microphytobenthic, studies were limited to salt marshes and to the Patos Lagoon estuary [35][36][37][38][39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Subtropical Coastal Lagoon from Southern Brazil: Environmental Conditions and Phytobenthic Community Structure

Donadel¹,

Torgan²

2020

Lagoon Environments Around the World - A Scientific Perspective

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The chapter is about the study of environmental conditions and the structure of the benthic diatoms community in Peixe Lagoon, which is inserted in a National Park in southern Brazil. The study was carried out covering four seasons from 2011 to 2012. The system is shallow (<60 cm) located parallel to the coastline, and it is connected to the ocean through a single channel, which occurs naturally or through human action. In this lagoon, during the study, the water temperature ranged between 15.3 and 32.1°C, and the dissolved oxygen presented higher value in the winter (12.5 mg.L −1 ) and lower value in the summer (7.5 mg.L −1 ). The lagoon ranged from mesotrophic to hypereutrophic conditions. The salinity varied between 1.3 and 36.2%, and these variations were mainly related to meteorological conditions. The community of diatoms in Peixe Lagoon is composed by 62 taxa distributed in 30 genera composed largely of marine, brackish, and few freshwater species. Among the attributes of the community, composition better reflects the environmental variations. The opening and closing of the channel, salinity, temperature, and the action and direction of the wind are variables influencing the dynamics of the microphytobenthic community.

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Diatomáceas (Bacillariophyceae) em marismas no sul do Brasil

Cited by 19 publications

References 22 publications

Taxonomy, morphology and distribution of Cymatosiraceae (Bacillariophyceae) in the littorals of Santa Catarina and Rio Grande do Sul

Taxonomy, morphology and distribution of Cymatosiraceae (Bacillariophyceae) in the littorals of Santa Catarina and Rio Grande do Sul

New records of amphoroid diatoms (Bacillariophyceae) from Cachoeira River, Northeast Brazil

Subtropical Coastal Lagoon from Southern Brazil: Environmental Conditions and Phytobenthic Community Structure

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