Two new<i>Eunotia</i>species with subapical costae, an uncommon structure for the genus

Canani, Luís Gustavo de Castro; Torgan, Lezilda Carvalho

doi:10.1080/0269249x.2013.821425

Cited by 3 publications

(4 citation statements)

References 19 publications

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“…Species of Eunotiaceae are influenced by pH and prefer acidic water (Patrick & Reimer 1966, Cantonati & Lange-Bertalot 2011. They are typical components of the diatom flora from tropical and subtropical areas, frequently associated with acid waters and oligotrophic or dystrophic habitats , Kociolek & Spaulding 2003, Burliga et al 2013.…”

Section: Discussionmentioning

confidence: 99%

“…The extant species are found in freshwater environments (Round et al 1990) but some fossil Eunotia have already been described from marine sediments in New Zealand (Novitski & Kociolek 2005). The genus includes species with ecological optimum in the epiphyton and metaphyton of dystrophic to oligotrophic waters, being valuable indicators of acidic and lowconductivity conditions (Round et al 1990, Van Dam et al 1994, Cantonati & Lange-Bertalot, 2011, Cox 2015.…”

Section: Introductionmentioning

confidence: 99%

“…Eunotia is one of the most common and species-rich diatom genera in the Neotropics (Patrick 1940a, 1940b, Hustedt 1952a, 1952b, 1965, Sala et al 2002a, 2002b, Faustino et al 2016, Costa et al 2017, with remarkable diversity in Brazilian acidic environments (Ferrari et al 2007, Bicca et al 2011, Canani & Torgan 2013, Dunck et al 2013a, 2013b, Cavalcante et al 2014). In the state of Paraná, the genus were reported by Ludwig & Valente-Moreira (1989), Fürstenberger & Valente-Moreira (2000), Tremarin et al (2008), Faria et al (2010), Bertolli et al (2010), Santos et al (2011), Bartozek et al (2013), Marra et al (2016), Silva-Lehmkuhl et al (2019), and Bartozek et al (2020) recently proposed a new species.…”

Section: Introductionmentioning

confidence: 99%

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Eunotia (Bacillariophyceae) from a subtropical stream adjacent to Iguaçu National Park, Brazil, with the proposition of a new species

Favaretto

Tremarin²,

Medeiros

et al. 2021

Biota Neotrop.

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Eunotia species from a stream located in the surrounding area of the Iguaçu National Park conservation unit were analyzed. Samples were monthly collected from September 2012 to August 2013. The periphytic material, manually obtained by squeezing aquatic macrophytes, was oxidized and analyzed under light and scanning electron microscopy. Twenty-one infrageneric taxa of Eunotia were identified, measured, and illustrated. Eunotia caniculoides sp. nov. is proposed as a new species, and eight taxa are new records for Paraná state.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Eunotia (Bacillariophyceae) from a subtropical stream adjacent to Iguaçu National Park, Brazil, with the proposition of a new species

Favaretto

Tremarin²,

Medeiros

et al. 2021

Biota Neotrop.

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“…A. pseudohantzschia Metzeltin & Lange-Bertalot, A. sabbei Metzeltin & Lange-Bertalot). These potentially distinguishing characteristics, as well as the uncertainty regarding affiliations and indeed recognition of newly proposed taxa, have been debated in several studies (Metzeltin & Lange-Bertalot, 1998Kociolek et al, 2001;Sabbe et al, 2001;Canani & Torgan, 2013;Siver et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Periphytic Actinella Lewis (Ochrophyta, Bacillariophyceae) species from an Environmental Protection Area in the Brazilian Amazon

Canani

2018

Acta Limnol. Bras.

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Aim The aim of this study is to present the Actinella species found in periphytic samples collected from an Environmental Protection Area in Santarém (PA, Brazil), to comment on their morphology by comparing them with existing records, and to increase knowledge of the distribution of the genus in Pará State. Methods Ten periphytic samples were collected from seven sampling stations in the Alter do Chão Environmental Protection Area (Santarém, Pará, Brazil) in October 2015 and February and July 2016. Dissolved oxygen, pH, conductivity and water temperature were measured in the field at sites from which samples were collected in 2016. Samples were oxidized and analyzed by light microscopy. Results The sampled water bodies presented low conductivity and an acidic pH. We identified 12 Actinella taxa, several of which had originally been described from samples collected from the Amazon in the mid-20th century, mainly in the lower Tapajós River region. Actinella rionegrensis is recorded for the first time in the State of Pará, outside of its type locality (Negro River, near Manaus, AM, Brazil), and the species habitus (wisp-shaped colonies) is recorded for the first time. Conclusion Our results indicate that the Environmental Protection Area has been effective in conserving the aquatic ecosystem, since Actinella species identified in the mid-20 th century are still present. Taxonomic issues for some species of this genus need clarification and revision, since overlapping diagnostic features occur among species and with species belonging to the genus Eunotia.

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Temporal variation in diatom communities associated to sediments of impacted versus non-impacted seagrass meadows of an estuarine lagoon

et al. 2023

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Two newEunotiaspecies with subapical costae, an uncommon structure for the genus

Cited by 3 publications

References 19 publications

Eunotia (Bacillariophyceae) from a subtropical stream adjacent to Iguaçu National Park, Brazil, with the proposition of a new species

Eunotia (Bacillariophyceae) from a subtropical stream adjacent to Iguaçu National Park, Brazil, with the proposition of a new species

Periphytic Actinella Lewis (Ochrophyta, Bacillariophyceae) species from an Environmental Protection Area in the Brazilian Amazon

Temporal variation in diatom communities associated to sediments of impacted versus non-impacted seagrass meadows of an estuarine lagoon

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