Cyanobacteria from two subtropical water bodies in southernmost Brazil



Document title: Cyanobacteria from two subtropical water bodies in southernmost Brazil
Journal: Iheringia. Serie botanica
Database: PERIÓDICA
System number: 000395171
ISSN: 0073-4705
Authors: 1
1
1
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Institutions: 1Fundacao Zoobotanica do Rio Grande do Sul, Museu de Ciencias Naturais, Porto Alegre, Rio Grande do Sul. Brasil
Year:
Season: Dic
Volumen: 70
Number: 2
Pages: 357-374
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Analítico, descriptivo
English abstract The research aimed to study the cyanobacterial flora of an artificial pond and marsh at the Lutheran University of Brazil (Canoas, Rio Grande do Sul State), while understanding the distribution and environmental conditions where these species occur. Samples were collected monthly between November 2009 and October 2010. Twenty-four species were identified, highlighting the colonial forms (50%), with the predominance of the order Chroococcales (67 %). The identified filamentous cyanobacteria belonged to Oscillatoriales (25 %), Nostocales (17 %) and Pseudanabaenales (8 %). Out of all the identified species, only six [ Microcystis aeruginosa (Kützing) Kützing M. wesenbergi (Komárek) Komárek, Oscillatoria curviceps Agardh ex Gomont, O. tenuis Agardh ex Gomont, Cuspidothrix issatschenkoi (Usačev) Rajaniemi et al. and Cylindrospermopsis raciborskii (Woloszynska) Seenayya & Subba Raju] were observed in both analyzed water bodies. Over the study period, Cylindrospermopsis raciborskii blooms occurred in the pond, while blooms of Microcystis aeruginosa were observed in the marsh in spring and summer
Portuguese abstract O trabalho teve como objetivos estudar a flora de cianobactérias de um lago artificial e de um banhado da Universidade Luterana do Brasil (Canoas, Rio Grande do Sul) e conhecer a distribuição e as condições ambientais em que as espécies foram encontradas. As amostras foram obtidas, mensalmente, entre novembro de 2009 e outubro de 2010. Foram identificadas 24 espécies, destacando-se as formas coloniais (50%), com predominância da ordem Chroococcales (67%). As cianobactérias filamentosas registradas pertenciam às Oscillatoriales (25%), Nostocales (17%) e Pseudanabaenales (8%). Dentre as espécies identificadas, somente seis [ Microcystis aeruginosa (Kützing) Kützing, M. wesenbergi (Komárek) Komárek, Oscillatoria curviceps Agardh ex Gomont, O . tenuis Agardh ex Gomont, Cuspidothrix issatschenkoi (Usačev) Rajaniemi et al. e Cylindrospermopsis raciborskii (Woloszynska) Seenayya & Subba Raju] foram observadas nos dois corpos d’água analisados. Florações de Cylindrospermopsis raciborskii ocorreram ao longo do período de estudo no lago artificial e de Microcystis aeruginosa foram observadas no banhado na primavera e verão
Disciplines: Biología
Keyword: Bacterias,
Ecología,
Taxonomía y sistemática,
Estanques artificiales,
Condiciones ambientales,
Pantanos,
Cianobacterias
Keyword: Biology,
Bacteria,
Ecology,
Taxonomy and systematics,
Artificial ponds,
Environmental conditions,
Marshes,
Cyanobacteria
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