scholarly journals Diatom assemblages (Bacillariophyta) in six tropical reservoirs from southeast Brazil: species composition and spatial and temporal variation patterns

2018 ◽  
Vol 30 (0) ◽  
Author(s):  
Gisele Carolina Marquardt ◽  
Carlos Eduardo de Mattos Bicudo ◽  
Thelma Alvim Veiga Ludwig ◽  
Luc Ector ◽  
Carlos E. Wetzel

Abstract Aim Relationships between species composition and variation patterns in diatom assemblages over six tropical reservoirs located in Southeast Brazil were explored. Methods Surface-sediment and phytoplankton diatom assemblages were determined and Canonical Correspondence Analysis was used to verify the set of environmental variables that best explain the species composition variation among sites. Results A total of 28 diatom taxa representing 20 genera were identified using light and scanning electron microscopy. Information on their ecological preferences was also provided. Humidophila biscutella is reported for the first time in Brazil whereas Sellaphora sassiana and Humidophila brekkaensis are reported for the first time in São Paulo State. Three groups of potential water quality indicators were delineated: the first suggests oligotrophic conditions, the second is related to cold waters with low luminosity in a mixing regime, and the third is a small group of tolerant species occurring in water with high conductivity, pH and total phosphorus conditions. Conclusion present study provided the first insight into the general diatom communities over six tropical reservoirs in Southeast Brazil and provided information on their ecology and distribution aiming bioassessment. The potential of water quality indicator diatom groups here outlined are in line with those reported in the literature and reinforce the importance of PEJU for the maintenance of ecological quality of reservoirs and reference conditions for the Metropolitan Region of São Paulo water sources.

Hoehnea ◽  
2009 ◽  
Vol 36 (2) ◽  
pp. 339-348 ◽  
Author(s):  
Marina Capelari ◽  
Tatiane Asai

This paper reports on the genera Cystoderma, Cystodermella and Ripartitella from Atlantic Rainforest, Southeast Brazil. They are represented by Cystoderma chocoanum, Cystodermella contusifolia, C. sipariana and Ripartitella brasiliensis. Cystoderma chocoanum is reported for the first time outside the type locality (Colombia) and its relationship with others species of Cystoderma, based on nLSU rDNA sequences, is discussed.


Check List ◽  
2010 ◽  
Vol 6 (2) ◽  
pp. 217 ◽  
Author(s):  
Mariana Juventina Magrini ◽  
Paula Beatriz Araujo ◽  
Marcio Uehara-Prado

Terrestrial Isopods were sampled in four protected Atlantic Forest areas located in Serra do Mar, state of São Paulo, southeastern Brazil. A total of 2,217 individuals of six species (Atlantoscia sp., Benthana werneri, Pseudodiploexochus tabularis, Pudeoniscus obscurus, Styloniscus spinosus and Trichorhina sp.) were captured in pitfall traps. The exotic species S. spinosus is recorded for the first time for the Americas. Another introduced species, P. tabularis, previously recorded only from the state of Rio Grande do Sul, had its geographic distribution extended to the state of São Paulo. The most abundant isopods in this study belong to an undescribed species of Atlantoscia.


Check List ◽  
2012 ◽  
Vol 8 (6) ◽  
pp. 1102 ◽  
Author(s):  
Maira Cortellini Abrahão ◽  
Adriana De Mello Gugliotta ◽  
Vera Lúcia Ramos Bononi

An updated checklist of xylophilous Agaricomycetes from the Brazilian Cerrado showed 127 species, 22 families and nine orders (Agaricales, Atheliales, Auriculariales, Corticiales, Gloeophyllales, Hymenochaetales, Polyporales, Russulales, and Thelephorales). The new list includes new specimens collected between 2009 and 2011 in Reserva Biológica de Mogi-Guaçu, São Paulo State, Brazil, and a revision of material previously known from Cerrado. Twelve species are mentioned for the first time for Brazil and 51 are recorded as new for the Cerrado.


Phytotaxa ◽  
2015 ◽  
Vol 239 (1) ◽  
pp. 17
Author(s):  
Larissa Bernardino Moro ◽  
Gregorio Delgado ◽  
Iracema Helena SCHOENLEIN-CRUSIUS

Clathrosporium retortum sp. nov., collected on submerged mixed leaf litter samples at Ilha do Cardoso State Park, São Paulo state, Brazil, is described based on morphological and molecular data. The fungus is characterized by forming whitish, dense, subglobose to irregular propagules, hyaline to subhyaline when young, subhyaline to dark brown at maturity, that are formed by densely interwoven conidial filaments with each conidial cell repeatedly branching bilaterally or occasionally unilaterally. Phylogenetic analyses using partial LSU nrDNA sequence data suggest that C. retortum belongs in the Sordariomycetes (Ascomycota) where it forms a well-supported clade with Clohesia corticola in the Sordariomycetidae, but its ordinal or familial placement remains unresolved. Its phylogenetic placement confirms the polyphyletic nature of aeroaquatic fungi like Clathrosporium, as it was distantly related to one available sequence in GenBank named as C. intricatum, the type species, which is phylogenetically related to the Helotiales (Leotiomycetes). However, due to lack of authenticity of the identity of this sequence with the type specimen of C. intricatum, a broad concept of Clathrosporium is tentatively adopted here to accommodate the present fungus instead of introducing a new genus. Beverwykella clathrata, Helicoön septatissimum and Peyronelina glomerulata are recorded for the first time from Brazil. Cancellidium applanatum and Candelabrum brocchiatum are new records for the state of São Paulo.


Check List ◽  
2016 ◽  
Vol 12 (4) ◽  
pp. 1949
Author(s):  
Rodrigo A. Caires

Electrona risso, a warm circumtropical lanternfish species distributed in all oceans, has been reported in the western Atlantic from Suriname to Southern Brazil. Re-examination of specimens attributed to this species which presumably supported the southernmost record in the western South Atlantic and are available at Museu de Zoologia, Universidade de São Paulo, Brazil, revealed that they were misidentified and are really Electrona paucirastra. As a result, E. paucirastra is reported for the first time in southern Brazil and the distribution of E. risso in the western Atlantic is discussed.


Check List ◽  
2018 ◽  
Vol 14 (5) ◽  
pp. 771-778 ◽  
Author(s):  
Matheus M. M. Soares ◽  
Aline S. Santiago ◽  
Rosaly Ale-Rocha

Xanthacrona Wulp, 1899 has been recorded in several countries of South America, but records in Brazil are few. Here, we record Xanthacrona tuberosa Cresson, 1908, Xanthacrona phyllochaeta Hendel, 1909, and Xanthacrona tripustulata Enderlein, 1921 for the first time from Brazil, and provide new records of Xanthacrona bipustulata Wulp, 1899 from the states Acre, Amazonas, Espírito Santo, Maranhão, Mato Grosso do Sul, Pará, Roraima, and São Paulo.


Check List ◽  
2018 ◽  
Vol 14 (5) ◽  
pp. 1059-1064
Author(s):  
Jessica Amaral Henrique ◽  
Ana Isabel Sobreiro ◽  
Valter Vieira Alves-Júnior

The occurrence of Euglossa imperialis Cockerell, 1922 is recorded for the first time in Mato Grosso do Sul, Brazil. This paper extends the distribution of the species by about 800 km west of the São Paulo state, its nearest record.


Author(s):  
Maria de Fátima Morethy Couto

The São Paulo Biennial was a daring enterprise modelled on the Venice Biennial that took place for the first time in 1951 in Brazil due to a series of sociocultural and political factors, including a booming industrial sector looking to assert itself socially within Brazilian society. The São Paulo Biennial, the first of its kind in Latin America, looked at propagating Brazil’s image internationally in both the art scene and in the political and economic contexts. Its first instance in 1951 was led by the industrialist Francisco Matarazzo Sobrinho, better known as Ciccillo Matarazzo (1898–1977), who had also spearheaded the founding of the Museu de Arte Moderna de São Paulo (MAM-SP) half a decade earlier. The biennials above all promoted the circulation of artists, artworks and cultural agents, which was key in the exchange of information, tendencies, and tastes. At a time when the number of art magazines published in Brazil was reduced and travelling abroad was not easy, the São Paulo Biennials connected Brazilians with international contemporary production through the organization of vast retrospectives of modern pioneers such as Paul Klee, Mondrian, and Picasso in 1953, Léger in 1955, and Pollock in 1957.


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