Desmídias (Zygnemaphyceae) do Rio São João, Parque Nacional do Iguaçu, Paraná, Brasil

Bortolini, Jascieli Carla; Meurer, Thamis; Bueno, Norma Catarina

doi:10.1590/s2236-89062010000200005

Cited by 7 publications

(5 citation statements)

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“…Geographic distribution in the Paraná State: Algarte et al 2006; Felisberto & Rodrigues (2007, 2012; Bortolini et al (2009Bortolini et al ( , 2010a; Aquino et al 2014 Cells 2-4 times longer than wide. Cells strongly curved, not inflated in the median region.…”

Section: A C T I N O T a E N I U M C U C U R B I T I N U Mmentioning

confidence: 99%

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Desmids (Zygnematophyceae) from the littoral zone of an urban artificial lake: taxonomic aspects and geographical distribution

et al. 2018

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Aim: The aim of this study was to assess the taxonomic aspects and geographical distribution of the periphytic desmids from two different substrates in the littoral zone of an urban artificial lake. Methods Samples of epiphytic and epilithic desmids were collected by grass and rock scraping, respectively, in two stations in the Cascavel municipal lake, Paraná, during April 2015, and March 2016 and 2017. In the laboratory, the taxa obtained from the samples were photographed and their morphometric characteristics recorded. The species composition of the desmid was characterized, and the frequency of occurrence as well as the geographic distribution of each taxon in the Paraná State were recorded. Results We identified 35 taxa, distributed in 10 genera. The most representative were Closterium Nitzsch ex Ralfs and Cosmarium Corda ex Ralfs. A high occurrence of sporadic taxa (60%) was observed and among the recorded taxa, the most frequent were Cosmarium pseudoconnatum Nordstedt var. pseudoconnatum and Desmidium grevillei (Kützing ex Ralfs) De Bary. Nine taxa were exclusive to the epilithic substrate and only Netrium digitus (Ralfs) Itzigsohn & Rothe var. digitus was exclusive to the epiphytic substrate, while the remaining 25 taxa occurred in both substrates. Seven taxa are new records for the Paraná State. Conclusion Although our results are of qualitative nature, they provide baseline data on the biogeographic distribution of taxa, which are crucial for future taxonomic and ecological studies that might contribute to the preservation of the biodiversity.

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Section: A C T I N O T a E N I U M C U C U R B I T I N U Mmentioning

confidence: 99%

“…Figure 32. Geographic distribution in the Paraná State:;Bortolini et al (2010a);Menezes et al (2011b);Aquino et al (2014Aquino et al ( , 2016.Frequency of occurrence: Sporadic Cosmarium subspeciosum Nordstedt var. validius Nordstedt, K. Svenska Vet.…”

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Desmids (Zygnematophyceae) from the littoral zone of an urban artificial lake: taxonomic aspects and geographical distribution

et al. 2018

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“…This taxon is widely distributed in Brazil, with records for all regions of the country (Araújo et al 2015). In Brazil, there are reports of its occurrence in phytoplankton (Bortolini et al 2010) and periphyton (Camargo et al 2009) of rivers, and in bromeliad phytotelmata environments (Ramos et al 2011). In the MRS, we found it occasionally in approximately 17% of our samples (Table 2).…”

Section: Micrasterias Borgei Wkrieger Var Borgei 1939 Figurementioning

confidence: 99%

Taxonomic notes on the species of the genus Micrasterias (Desmidiaceae, Conjugatophyceae) from the Metropolitan Region of Salvador, Bahia, Brazil

Santos¹,

Bicudo²,

Moura³

2018

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We present the results of a taxonomic survey of the genus Micrasterias in the Metropolitan Region of Salvador (MRS), Bahia, northeastern Brazil during 2007–2010 and 2014–2015. A total of 275 phytoplanktonic and periphytic samples from 11 municipalities were analyzed. The samples were collected using a plankton net with 20 µm mesh or squeezed from macrophytes. Twenty-nine taxa were identified, which 20 have their geographic distributions expanded. Only M. pinnatifida was considered frequent, occurring in 9 municipalities, while we classified 21 species as rare in the study area. Our results emphasize the importance of the conservation of aquatic bodies in the MRS for the maintenance of biological diversity of desmids and other aquatic organisms.

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“…Distribution in Brazil: Amazonas: Förster (1969); Lopes and Bicudo (2003); . Paraná: Bortolini et al (2010). São Paulo: Bicudo et al (1997).…”

Section: Spatial and Temporal Characterizationmentioning

confidence: 99%

“…Mato Grosso: DeLamonica-Freire and Heckman (1996); Paraná: Bortolini et al (2008);Felisberto and Rodrigues (2008); Bortolini et al (2010). Rio de Janeiro: Bicudo and Bicudo (1969);Sophia (1991).…”

Section: Spatial and Temporal Characterizationmentioning

confidence: 99%

Taxonomical and ecological characteristics of the desmids placoderms in reservoir: analyzing the spatial and temporal distribution

2014

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Aim: This study aimed to evaluate the influence of river-dam axis and abiotic factors on the composition of Closteriaceae, Gonatozygaceae, Mesotaeniaceae and Peniaceae in a tropical reservoir. Methods: Water samples for physical, chemical and periphyton analysis were collected in April and August 2002 in different regions along the axis of the river-dam of Rosana Reservoir, River Basin Paranapanema. The substrates collected, always in the litoranea region, were petioles of Eichhornia azurea (Swartz) Kunth. To examine the relationship of abiotic variables with reservoir zones and between the floristic composition of desmids, we used principal component analysis (PCA) and canonical correspondence analysis (CCA). Results: The results of the PCA explained 81.3% of the total variability in the first two axes. In the first axis, the variables of conductivity, water temperature and the pH were related to the sampling regions of April with higher values, while for the month of August, nitrate, total phosphorus and dissolved oxygen showed higher values. We identified 20 taxa, distributed in the genera Closterium (14), Gonatozygon (4), Netrium (1) and Penium (1). Spatially, the higher taxa were recorded in the lacustrine region for both collection periods. The canonical correspondence analysis (CCA) summarized 62.2% of total data variability of taxa in the first two axes, and in August, Closterium incurvum Brébisson, C. cornu Ehrenberg ex Ralfs and Gonatozygon monotaenium De Bary, were related to higher values of turbidity and nitrate to the lacustrine and intermediate regions. Conclusion: Thus, the formation of groups was due to the regions along the longitudinal axis, then the seasonal period, which must be related to the low current velocity, the higher values of temperature and the water transparency, especially in late summer.

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Desmídias (Zygnemaphyceae) do Rio São João, Parque Nacional do Iguaçu, Paraná, Brasil

Cited by 7 publications

References 10 publications

Desmids (Zygnematophyceae) from the littoral zone of an urban artificial lake: taxonomic aspects and geographical distribution

Desmids (Zygnematophyceae) from the littoral zone of an urban artificial lake: taxonomic aspects and geographical distribution

Taxonomic notes on the species of the genus Micrasterias (Desmidiaceae, Conjugatophyceae) from the Metropolitan Region of Salvador, Bahia, Brazil

Taxonomical and ecological characteristics of the desmids placoderms in reservoir: analyzing the spatial and temporal distribution

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