Results 61 to 70 of about 137 (75)
Some of the next articles are maybe not open access.
Phytotaxa, 2016
Actinella leontopithecus-rosalia is a poorly known diatom described from southeast Brazil. Its similarity with other Actinella taxa and the lack of morphological data make it difficult the species recognition by researchers. This study addresses unpublished morphologic and morphometric details of frustule and expands the geographic distribution of A ...
Priscila I Tremarin
exaly +3 more sources
Actinella leontopithecus-rosalia is a poorly known diatom described from southeast Brazil. Its similarity with other Actinella taxa and the lack of morphological data make it difficult the species recognition by researchers. This study addresses unpublished morphologic and morphometric details of frustule and expands the geographic distribution of A ...
Priscila I Tremarin
exaly +3 more sources
European Journal of Phycology, 2001 Examination of sediment samples from oligo-and dystrophic ponds, lakes and streams in Papua New Guinea, Australia and New Zealand revealed a hitherto unknown diversity of the diatom genus Actinella Lewis. Six new species are proposed, viz. Actinella aotearoaia sp. nov., A. giluwensis sp. nov., A indistincta sp. nov., A. muylaertii sp. nov., A. parva sp.
Koen Sabbe +7 more
openaire +2 more sources
Phytotaxa, 2019
Floodplains are heterogeneous ecosystems that occupy a large area in the neotropic regions, which show great diatom diversity. During a floristic survey of periphytic and sedimentary samples in a swamp from the Upper Paraná River Floodplain in Brazil, a new species of Actinella Lewis and Gomphonema Ehrenberg (Bacillariophyceae) were found.
Liliana Rodrigues, Daiane Trevisan Ruwer
exaly +2 more sources
Floodplains are heterogeneous ecosystems that occupy a large area in the neotropic regions, which show great diatom diversity. During a floristic survey of periphytic and sedimentary samples in a swamp from the Upper Paraná River Floodplain in Brazil, a new species of Actinella Lewis and Gomphonema Ehrenberg (Bacillariophyceae) were found.
Liliana Rodrigues, Daiane Trevisan Ruwer
exaly +2 more sources
Phytotaxa
Actinella gessneri Hustedt is a rare and poorly known Amazonian diatom species. Low records and restricted distribution to acid waters suggest that this species may be threatened with extinction. We record a new occurrence of Actinella gessneri Hustedt in Amazonian blackwaters, providing detailed images on LM and SEM, and approaching ecological aspects
Elton Lehmkuhl +2 more
exaly +2 more sources
Actinella gessneri Hustedt is a rare and poorly known Amazonian diatom species. Low records and restricted distribution to acid waters suggest that this species may be threatened with extinction. We record a new occurrence of Actinella gessneri Hustedt in Amazonian blackwaters, providing detailed images on LM and SEM, and approaching ecological aspects
Elton Lehmkuhl +2 more
exaly +2 more sources
Novosti Sistematiki Nizshikh Rastenii
Actinella brasiliensis, a rare diatom for Russia, was first found in Yakutia. As previous detailed studies of this species using SEM are limited, we provide an amended description of its morphology, as well as a comparison of our data with the results of previous studies.
R M Gogorev, V A Gabyshev, S I Genkal
exaly +2 more sources
Actinella brasiliensis, a rare diatom for Russia, was first found in Yakutia. As previous detailed studies of this species using SEM are limited, we provide an amended description of its morphology, as well as a comparison of our data with the results of previous studies.
R M Gogorev, V A Gabyshev, S I Genkal
exaly +2 more sources
Archiv Für Protistenkunde, 1986
Summary The bent, heteropolar diatom alga Actinella mirabilis being characteristic in its morphology lives settled in the brooks of Amazony rain forests. Its dropped out specimens can be found in the larger streams of Amazony. Up-today unknown parts of this alga could be discovered by SEM-photogramms (poroide rows, border thorns, structure of raphe).
exaly +2 more sources
Summary The bent, heteropolar diatom alga Actinella mirabilis being characteristic in its morphology lives settled in the brooks of Amazony rain forests. Its dropped out specimens can be found in the larger streams of Amazony. Up-today unknown parts of this alga could be discovered by SEM-photogramms (poroide rows, border thorns, structure of raphe).
exaly +2 more sources
Heringeriana, 2017 No Distrito Federal e em Goiás, estudos taxonômicos das Bacillariophyta são escassos. Este trabalho apresenta o levantamento taxonômico das diatomáceas pertencentes aos gêneros Actinella e Peronia do rio Descoberto e alguns de seus afluentes.
Ellen Surer da Costa Reis +1 more
exaly +4 more sources
The Diatom (Bacillariophyceae) GenusActinellaLewis in Hawai‘i1
Pacific Science, 2013We review the occurrence of the diatom genus Actinella Lewis in Hawai‘i. Based on collections from the islands of Kaua‘i, Moloka‘i, and Hawai‘i, we have documented the presence of three species of the genus. Using light and scanning electron microscopy, we illustrate these species, two of which are new to science and described here.
Hayden Ripple, J. Patrick Kociolek
openaire +1 more source