Results 11 to 20 of about 84 (66)

Cosmarium (Desmidiaceae, Zygnemaphyceae) da ficoflórula perifítica do reservatório de Rosana, bacia do rio Paranapanema, Paraná/São Paulo, Brasil [PDF]

open access: yesHoehnea (revista), 2010
Com este trabalho, objetivou-se divulgar espécies pertencentes ao gênero Cosmarium Corda, da comunidade perifítica de três regiões do reservatório de Rosana, Sul do Brasil. As amostras foram coletadas durante o período de verão e inverno em distintas regiões ao longo do eixo rio-barragem do reservatório.
Liliana Rodrigues   +2 more
exaly   +5 more sources

Criptógamos do Parque Estadual das Fontes do Ipiranga, São Paulo, SP: Algas, 24: Zygnemaphyceae (Desmidiales: Octacanthium, Staurastrum e Staurodesmus) [PDF]

open access: yesHoehnea (revista), 2007
Levantamento florístico dos gêneros Octacanthium, Staurastrum e Staurodesmus, da ordem Desmidiales (Zygnemaphyceae) na Reserva Biológica do Parque Estadual das Fontes do Ipiranga situado na cidade de São Paulo, Estado de São Paulo, Brasil. Dezenove espécies de Staurastrum, seis variedades que não são as típicas de suas respectivas espécies e quatro ...
Bicudo, Carlos Eduardo de Matos   +3 more
exaly   +5 more sources

Barium accumulation by desmids of the genus Closterium (Zygnemaphyceae) [PDF]

open access: yesBritish Phycological Journal, 1980
By means of X-ray analysis with a stereo-scanning electron microscope, it has been demonstrated that the crystals enclosed in the terminal vacuoles of several species of the desmid genus Closterium are of barium and not calcium sulphate as previously reported. Barium sulphate has also been found in cells of Pleurotaenium and Micrasterias.
A.J. Brook   +3 more
openaire   +1 more source

Cosmarium (Zygnemaphyceae) de lagos artificiais rurais de Campo Mourão – PR

open access: yesSaBios-Revista de Saúde e Biologia, 2021
Este estudo teve como objetivo fazer o levantamento taxonômico das algas do gênero Cosmarium Corda ex Ralfs 1848 de lagos artificiais rurais de Campo Mourão, PR, para contribuir com o conhecimento ficológico do estado do Paraná. As coletas foram realizadas no mês de agosto de 2015. O material foi obtido do pecíolo de Salvinia auriculata Aubl, Elodea sp.
Guilherme De Almeida Garcia Rodrigues   +1 more
openaire   +2 more sources

Effects of nutrients enrichment on algal communities: an experimental in mesocosms approach Efeitos do enriquecimento de nutrientes em comunidades de algas: uma abordagem experimental em mesocosmos

open access: yesActa Limnologica Brasiliensia, 2011
AIM: The effect of different concentrations of nutrients on algal communities living at the bottom of mesocosms was examined; METHODS: The experiment was carried out in the tributary of Rosana reservoir (Corvo river) from November 22nd to December 16th ...
Sirlene Aparecida Felisberto   +2 more
doaj   +1 more source

Criptógamos do Parque Estadual das Fontes do Ipiranga, São Paulo, SP. Algas, 43: Zygnematophyceae (Mesotaeniaceae)

open access: yesHoehnea, 2019
RESUMO Trata do levantamento taxonômico das Mesotaeniaceae (Zygnemaphyceae, Zygnemales) de ambientes lacustres do PEFI, Parque Estadual das Fontes do Ipiranga.
Carlos E. de M. Bicudo
doaj   +1 more source

Performance of a Series of Polishing Ponds in the Treatment of Sanitary Sewage

open access: yesCiencia e Ingeniería Neogranadina, 2023
The main objective of this research was to evaluate the functioning of a system of polishing ponds on a pilot scale in the post-treatment of urban sewage discharged from an up-flow anaerobic sludge blanket reactor and followed by a submerged aerated ...
Adriana Barbosa Sales de Magalhães   +3 more
doaj   +1 more source

Periphytic algal community in artificial and natural substratum in a tributary of the Rosana reservoir (Corvo Stream, Paraná State, Brazil) - doi: 10.4025/actascibiolsci.v32i4.4627

open access: yesActa Scientiarum: Biological Sciences, 2010
Periphytic algal community in artificial and natural substratum in a tributary of the Rosana reservoir (Corvo Stream, Paraná State, Brazil). This study evaluated the heterogeneity in periphytic algal community, under the influence of time colonization on
Sirlene Aparecida Felisberto   +1 more
doaj   +1 more source

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

open access: yesActa Limnologica Brasiliensia, 2014
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 ...
Sirlene Aparecida Felisberto   +2 more
doaj   +1 more source

Periphytic algae of the Garças Lake, Upper Paraná River floodplain: comparing the years 1994 and 2004 Algas perifíticas da Lagoa das Garças, planície de inundação do Alto Rio Paraná: comparação entre os anos de 1994 e 2004

open access: yesBrazilian Journal of Biology, 2009
The changes imposed by dams on hydrological regime, water transparence and nutrient concentrations downstream affect biodiversity in relation to species richness and specific composition of the community.
EA. Murakami, DC. Bicudo, L. Rodrigues
doaj   +1 more source

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