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Aulacoseira italica

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Journal Article
Published: 01 June 2015
Russ. Geol. Geophys. (2015) 56 (6): 947–958.
....) Hawort and Stephanodiscus niagarae var. pusanovae Genkal et Cherepanova; Sergeevskii— Staurosira construens var. venter (Ehr.) Grun., Aulacoseira italica (Ehr.) Sim., and representatives of the genus Cymbella with large valves (up to 175 µm in length); Terekhovka— Aulacoseira praegranulata var...
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figs 1-5.  Cyclotella rossii  Håkansson.  figs 6-11.  <span class="search-highlight">Aulacoseira</span> distans  ...
Published: 01 November 2003
subarctica (O. Müller) Haworth. figs 18-20. Aulacoseira valida (Grunow) Krammer. fig. 21. Aulacoseira italica (Ehrenberg) Simonsen. figs 1-10, 12-14, 16-17, 19-21 LM micrographs (magnification × 1500); figs 11, 15, 18 SEM micrographs (scale bars: 11=5 μm; 15, 18=10 μm).
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Rock-forming taxa of the Sergeevskii diatomite:  a , general view of the di...
Published: 01 June 2015
Fig. 3. Rock-forming taxa of the Sergeevskii diatomite: a , general view of the diatomite, SEM; b , Staurosira construens var. venter (Ehr.) Grun., SEM; c , g , Aulacoseira italica (Ehr.) Sim. ( c , LM; g, SEM); d , f , C . aff. australica A. S. ( d , LM; f , SEM), e, Cymbella
Journal Article
Published: 01 November 2003
Journal of Micropalaeontology (2003) 22 (2): 183–208.
... subarctica (O. Müller) Haworth. figs 18-20. Aulacoseira valida (Grunow) Krammer. fig. 21. Aulacoseira italica (Ehrenberg) Simonsen. figs 1-10, 12-14, 16-17, 19-21 LM micrographs (magnification × 1500); figs 11, 15, 18 SEM micrographs (scale bars: 11=5 μm; 15, 18=10 μm). ...
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Journal Article
Published: 01 February 2016
Russ. Geol. Geophys. (2016) 57 (2): 316–328.
...–1985: Cyclotella-complex was partly replaced by more pH-tolerant species of diatoms, such as Aulacoseira lirata, A. italica , and Tabellaria flocculosa . This anthropogenic impact, however, was not dramatic for the ecosystem of mountain Lake Oron. The diatom records distinctly show a tendency...
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Journal Article
Published: 01 September 2016
Russ. Geol. Geophys. (2016) 57 (9): 1321–1333.
... , Cyclotella bodanica ; d , Aulacoseira subarctica ; e , A. italica ; f , Staurosirella pinnata ; g , Fragilaria pulchella ; h , F. capucina var. rumpens ; i , Ulnaria ulna ; j , Cymbella sinuata ; k , Encyonema ventricosa ; l , Cocconeis placentula ; m , Tryblionella angustata ; n...
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Variations in the number of diatom species valves (mln valves/g) amounting ...
Published: 01 September 2016
, Aulacoseira subarctica ; e , A. italica ; f , Staurosirella pinnata ; g , Fragilaria pulchella ; h , F. capucina var. rumpens ; i , Ulnaria ulna ; j , Cymbella sinuata ; k , Encyonema ventricosa ; l , Cocconeis placentula ; m , Tryblionella angustata ; n , Nitzschia fonticola . 1–5, most
Journal Article
Published: 01 March 2011
Russ. Geol. Geophys. (2011) 52 (3): 333–342.
... this time bed 2 accumulated (dark brown silt). A diatom complex rich in the planktonic species Aulacoseira italica (Ehr.) Sim. marks a new filling of the lake with water. In this period water salinity decreased and the connection between the lake and the river was probably restored. The complex...
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Journal Article
Published: 01 February 2004
Russ. Geol. Geophys. (2004) 45 (2): 163–193.
... ), with the age corresponding to the last interglacial (Kazantsevo time) equivalent to MIS 5e ( Fig. 11 ). The MIS 5e diatom assemblage in BDP-99 includes Aulacoseira italica , unlike the BDP-93 and BDP-96 cores. A number of indicator species was also found downsection, such as the assemblage in section 21...
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Series: GSA Special Papers
Published: 12 August 2021
DOI: 10.1130/2018.2536(10)
EISBN: 9780813795362
... occupy the planktic zone of open waters of (1) a circumneutral to mildly alkaline lake— Aulacoseira italica , Synedra acus , Diatoma tenuis , Stauroneis , Staurosira construens , Nitzschia , and Gomphonema ; (2) a mildly acidic lake— Aulacoseira distans and Gomphonema ; (3) a swift-flowing river...
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Journal Article
Published: 01 January 2022
Russ. Geol. Geophys. (2022) 63 (1): 55–71.
... defined in lakes Ladoga and Onego as Aulacoseira distans var. alpigena ( A. alpigena ), A. italica , or A. italica ssp. subarctica owing to its morphological variability) is a codominant species of A. islandica among the spring phytoplankton ( Raspopov, 1968 ; Chekryzheva, 2015 ), which...
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Journal Article
Published: 01 November 2018
Russ. Geol. Geophys. (2018) 59 (11): 1410–1418.
... of sampled section. 1, section of overbank deposits, Komissarovka River valley. Assemblage 1 (6–26 cm): up to 53.3% planktonic species Aulacoseira italica ; 11% A. subarctica ; quite high percentages of bottom species Pinnularia borealis (22.2%) and Hantzschia amphioxis (11%) common to soils...
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Journal Article
Journal: GSA Bulletin
Published: 01 June 2000
GSA Bulletin (2000) 112 (6): 943–958.
...., Aulacoseira italica , Cyclotella michiganiana , and Fragiliaria nanana ) in the overlying DAZ 7 zone indicate that water continued to be deep, with a decrease in alkalinity (cf. Brugam, 1993 , p. 211). The overlying thick marl contains little silt (298–548 cm, Table 1 ). Siliceous microfossil zone DAZ 8...
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Journal Article
Journal: Geosphere
Published: 01 August 2015
Geosphere (2015) 11 (4): 1172–1203.
...., The diatoms: Applications for the environmental and earth sciences (second edition) : Cambridge, U.K ., Cambridge University Press , p. 324 – 345 , doi:10.1017/CBO9780511763175. Crawford R.M. Likhoshway Y.V. Jahn R. , 2003 , Morphology and identity of Aulacoseira italica...
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Journal Article
Journal: GSA Bulletin
Published: 01 October 2001
GSA Bulletin (2001) 113 (10): 1299–1311.
... contain several valves of fresh-water diatoms, including Pinnularia borealis, Hantzschia amphioxys, Aulacoseira italica, Cocconeis placentula, Stauroneis anceps, and Pinnularia subcapitata. The Red Salmon Creek locality comprises a 35-m-long outcrop along a stream bank in the eastern...
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Journal Article
Published: 01 November 2003
Journal of Paleontology (2003) 77 (6): 1159–1181.
... Ehrenberg, 1840 , the slightly brackish (oligohalobous-halophilous) taxa Rhopalodia gibberula ( Ehrenberg, 1843 ) O. Müller, 1895 and Synedra platensis Frengüelli, 1934 , and the freshwater taxa Cocconeis placentula Ehrenberg, 1838 , Aulacoseira granulata ( Ehrenberg, 1843 ) Simonsen, 1979...
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Series: The Micropalaeontological Society, Special Publications
Published: 01 January 2017
DOI: 10.1144/TMS7.14
EISBN: 9781786203069
.... Smith. 2, Cyclotella radiosa Grunow. 3, Surirella helvetica Brun. 4, Sellaphora bacillum (Ehrenberg) D.G. Mann. 5, Sellaphora sp. 6, Sellaphora pupula (Kützing) Mereschkowsky. 7–12, Cyclotella ocellata Pantoscek. 13, Aulacoseira italica (Ehrenberg) Simonsen. 14, 15, Navicula cryptotenella...
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