Contribuição à Ficologia da Amazônia. 3 - Desmidioflórula dos lagos Cristalino e São Sebastião, Estado do Amazonas: Gêneros Netrium, Closterium e Pleurotaenium

Martins, Dayse Vasques

doi:10.1590/1809-43921982122279

Cited by 5 publications

(3 citation statements)

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“…Distribution in Brazil: Amazonas: Scott et al (1965);Martins (1982). Mato Grosso: DeLamonica-Freire and Heckman (1996); Paraná: Bortolini et al (2008);Felisberto and Rodrigues (2008); Bortolini et al (2010).…”

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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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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“…The Amazon region has had a considerable number of studies carried out during the mid-20 th century by foreign researchers such as Grönblad (1945), Thomasson (1955Thomasson ( , 1971Thomasson ( , 1977, Förster (1963Förster ( , 1964Förster ( , 1969Förster ( , 1974, Scott et al (1965), Schmidt and Uherkovich (1973), Uherkovich and Schmidt (1974), Uherkovich and Rai (1979), and Uherkovich (1981). Only since the 1980s have the main contributors been Brazilian, such as Martins (1980Martins ( , 1982Martins ( , 1986aMartins ( , 1986b, Bittencourt-Oliveira (1990, 1993a, 1993b, Lopes (1992), Suarez-Mera (1995), Sophia and Huszar (1996), Ibañez (1998), Lopes and Bicudo (2003), Martins-da-Silva and Bicudo (2007), Souza et al (2007), Souza (2008Souza ( , 2012, Melo and Souza (2009), and Melo (2010, 2011). The most recent Brazilian researchers are Holanda et al (2019), Araújo et al (2020), and Saturnino et al (2020).…”

Section: Introductionmentioning

confidence: 99%

Some interesting desmids (Desmidiaceae, Zygnematophyceae): first records, taxonomic notes, and distribution for the Amazon Brazilian flora

et al. 2022

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We report nine interesting desmid taxa, which five were recorded for the first time for the Amazon Bra-zilian flora, including first records of two infraspecific taxa from Brazil. The material was collected from an Ama-zon flooded area in the state of Amapá, Brazil. A description, geographical distribution in Brazil, water conditions, and frequency of occurrence are provided for each taxon. Our study expands the knowledge of desmids by provid-ing taxonomic notes and information on geographic distribution.

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“…The family Desmidiaceae (Desmidiales, Zygnematophyceae) comprises unicellular organisms, some uniseriate with "filamentous" habits or, more rarely, colonial without any definite shape (Martins 1982;Acleto & Zúñiga 1998;Yinxin & Minjuan 2005;Graham et al 2009). Although this family demonstrates significant species richness, comprising approximately 70% of the total number of known species of Zygnematophyceae (Gontcharov & Melkonian 2005), those taxa are distributed non-uniformly among the 36 recognized genera.…”

Section: Introductionmentioning

confidence: 99%

Desmids (Desmidiaceae, Zygnematophyceae) with cylindrical morphologies in the coastal plains of northern Bahia, Brazil

2014

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Our knowledge of desmids with cylindrical morphologies in the state of Bahia, Brazil, is quite limited, only 13 such taxa having been described to date. The present study reports the results of a taxonomic inventory of desmids (Desmidiaceae) with cylindrical morphologies from the coastal plains of northern Bahia. During the summer months (January-March) and winter months (June-August) of two separate years (2007 and 2009), we collected a total of 90 samples of planktonic and periphytic material from lotic and lentic environments within three environmentally protected areas within the state (Rio Capivara, Lagoas de Guarajuba, and Litoral Norte). We identified 32 taxa, distributed among six genera (Docidium, Haplotaenium, Ichthyocercus, Pleurotaenium, Tetmemorus, and Triploceras); three were new additions to the algal flora of Brazil (Haplotaenium minutum var. minutum f. maius, Ichthyocercus angolensis, and Pleurotaenium coronatum var. nodulosum). In addition, the geographical distributions of 20 taxa were expanded to include northeastern Brazil. The genus Docidium was reported for the first time in Bahia.

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Contribuição à Ficologia da Amazônia. 3 - Desmidioflórula dos lagos Cristalino e São Sebastião, Estado do Amazonas: Gêneros Netrium, Closterium e Pleurotaenium

Abstract: Resumo

Cited by 5 publications

References 1 publication

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

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

Some interesting desmids (Desmidiaceae, Zygnematophyceae): first records, taxonomic notes, and distribution for the Amazon Brazilian flora

Desmids (Desmidiaceae, Zygnematophyceae) with cylindrical morphologies in the coastal plains of northern Bahia, Brazil

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