Results 11 to 20 of about 13,399 (188)

Respuesta del perifiton de agua dulce al glifosato grado-técnico y dos formulados comerciales [PDF]

open access: yes, 2019
El glifosato es el herbicida más utilizado a nivel mundial. Puede llegar a los cuerpos de agua y afectar a las comunidades microbianas. Comparamos los efectos del glifosato grado técnico y dos formulados comerciales sobre una comunidad periférica de agua
Gonzalez, Daniela   +4 more
core   +1 more source

Simonsenia aveniformis sp nov (Bacillariophyceae), molecular phylogeny and systematics of the genus, and a new type of canal raphe system [PDF]

open access: yes, 2015
The genus Simonsenia is reviewed and S. aveniformis described as new for science by light and electron microscopy. The new species originated from estuarine environments in southern Iberia (Atlantic coast) and was isolated into culture. In LM, Simonsenia
A Gomes   +41 more
core   +1 more source

Primer registro de Thalassiosira catharinensis (Bacillariophyta) en aguas costeras marinas argentinas [PDF]

open access: yes, 2018
Several ultrastructural analyses of taxa belonging to the genus Thalassiosira from Argentinean coastal waters were carried out, nevertheless, the smaller fraction of the nanoplanktonic Thalassiosira was frequently overlooked.
Lavigne, Andrea Susana   +2 more
core   +2 more sources

European diatoms in freshwater habitats near Arctowski Station, King George Island, maritime Antarctica [PDF]

open access: yesPolish Polar Research
Diatom assemblages collected from ponds and pools surrounding Arctowski Station (King George Island, South Shetland Islands) have been investigated. The study focused on two groups of samples: archival samples collected in the 1990s and contemporary ...
Natalia Kochman-Kędziora   +3 more
doaj   +1 more source

Análisis de los materiales tipo de Pleurosigma formosum y P. decorum (Pleurosigmataceae, Bacillariophyta) [PDF]

open access: yes, 2014
Los materiales tipo de Pleurosigma formosum W. Smith y P. decorum W. Smith fueron examinados. Ambas especies fueron separadas hasta ahora por el rango de tamaño, la forma de la valva y la densidad de las estrías sobre la base de su análisis con ...
Sar, Eugenia Alicia   +2 more
core   +2 more sources

Contribution to the inventory of Iberian diatoms: Encyonema nevadense S.Blanco & al. sp. nov. (Cymbellales, Gomphonemataceae)

open access: yesAnales del Jardín Botánico de Madrid, 2019
The diatom Encyonema nevadense S.Blanco & al. sp. nov. is described as a new species, from epilithic samples collected from a high mountain pond in Sierra Nevada National Park.
Saúl Blanco   +3 more
doaj   +1 more source

Diatoms from small ponds and terrestrial habitats in Deserta Grande Island (Madeira Archipelago) [PDF]

open access: yesBiodiversity Data Journal, 2021
Freshwater diversity from Desertas islands (Madeira archipelago, Portugal) is poorly known, although the islands are protected and became a Natural Reserve in 1995.
Vítor Gonçalves   +4 more
doaj   +3 more sources

Diatomáceas epilíticas de águas oligotróficas e ácidas do Sudeste do Brasil Epilithic diatoms from acidic and oligotrophic waters in Southeast Brazil

open access: yesActa Botânica Brasílica, 2011
Poucos estudos tem abordado a flora de diatomáceas de sistemas oligotróficos do Brasil. São apresentados os resultados da composição taxonômica e distribuição espacial e temporal de diatomáceas no rio do Salto, situado no Parque Estadual do Ibitipoca ...
Luís Gustavo de Castro Canani   +2 more
doaj   +1 more source

On the identity of the rare Fragilaria subconstricta (Fragilariaceae), with Fragilaria species forming ribbon-like colonies shortly reconsidered [PDF]

open access: yesPlant Ecology and Evolution, 2019
Background and aims – During phytoplankton surveys of a freshwater pond in Northeastern France, Fragilaria subconstricta (Bacillariophyceae) was observed.
David Heudre   +4 more
doaj   +3 more sources

Antagonistic and synergistic responses to solar ultraviolet radiation and increased temperature of phytoplankton from cenotes (sink holes) of the Yucatán Peninsula, México [PDF]

open access: yes, 2015
Cenotes (sink holes) are karstic formations characteristic of the Yucatán Peninsula and are the main source of fresh water in the region. Because of their tropical location, they receive high levels of solar radiation and are exposed to high temperatures.
Banaszak, Anastazia T.   +5 more
core   +1 more source

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