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Gyrosigma

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Journal Article
Published: 01 January 2003
Micropaleontology (2003) 49 (2): 159–169.
... by J.T. Arlidge , W. Archer , J. Ralfs , W.C. Williamson and A. Pritchard , 968 p., pl. 40 London ( 1861 ). STERRENBURG , F. A. S. , 1991a . Studies on the genera Gyrosigma and Pleurosigma (Bacillariophyceae). The typus generis of Pleurosigma , some presumed...
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Results of canonical correspondence analyses (CCA) on the Estancia Last Gla...
Published: 18 May 2022
. peis.— Gyrosigma peisonis , H. hung.— Hippodonta hungarica , K. clev.— Karayevia clevei , L. affi.— Lindavia affinis , L. ocel.— Lindavia ocellata complex, M. ellip.— Mastogloia elliptica , Navi. sp.— Navicula sp., Nitz. sp.— Nitzschia sp., P. neom.— Pinnularia neomajor , P. angl.— Placoneis
Journal Article
Published: 13 February 2024
Journal of Foraminiferal Research (2024) 54 (1): 49–53.
...' being taken as food are not specified but are distinctive and easily recognizable for the most part. Prominent among the organisms shown on the pseudopods of P. planatus are a Gyrosigma sp. diatom, the tintinnid ciliate Dictyocysta elegans , and the dinoflagellate, Ceratium tripos , all marine...
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Journal Article
Journal: Geology
Published: 01 June 2017
Geology (2017) 45 (6): 535–538.
... ) and tidal-flat (e.g., Melosira moniliformis , Planothidium delicatulum ) taxa increased by 50%. The resulting mixed assemblage persisted until July 2012 (11 months), after which low-marsh (e.g., Gyrosigma acuminatum , Surirella brebissonii ) and tidal-flat (e.g., Tryblionella levidensis...
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Journal Article
Published: 01 April 2005
Russ. Geol. Geophys. (2005) 46 (4): 424–430.
... , Pinnularia , Meridion , Surirella , Gyrosigma , Rhopalodia , Eunothia , Didymosphaenia , and Caloneis ( Fig. 3 ). The contents of benthic and planktonic diatom species vary from 2.7 to 6.8 and from 1.48 to 5.99 mln frustules per gram of dry sediment, respectively. 04 03 2004 © 2005...
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Journal Article
Journal: GSA Bulletin
Published: 01 October 2001
GSA Bulletin (2001) 113 (10): 1299–1311.
... taxa, including Achnanthes brevipes, Caloneis westii, Gyrosigma eximium, Melosira nummuloides, and Mastogloia elliptica. The Nisqually River locality consists of a 50-m-long outcrop on the east bank of the Nisqually River, about 1.5 km downstream of Interstate 5 ( Figs. 1 and 8...
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Journal Article
Published: 01 March 2010
Russ. Geol. Geophys. (2010) 51 (3): 237–258.
... of their habitat, which is specific for mesotrophic and weakly eutrophic lakes with a rich species composition, a frequent change of predominant groups, and the mass occurrence of the Cyclotella , Navicula , Pinnularia Ehr., Amphora Ehr., and Gyrosigma Hass genera. In ecology and systematic composition...
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Journal Article
Published: 01 December 2000
Journal of Micropalaeontology (2000) 19 (2): 123–131.
.... advena 5 2 0 1 1 1 1 4.5 1.5 1 1.5 - Diploneis spp. 4.5 0 0 2 0 0 1 1 0.5 0 0 - Fragilaria fasciculata 1 0 0 0 0 0 0 0.5 0 0 0 - Fragilariaceae spp. 0 0 0.5 0 0 0 0 0 0 0 0 - Gyrosigma spp. 0 0 0 1 0 0 0 0 0 0 0...
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Series: SEPM Special Publication
Published: 01 January 2000
EISBN: 9781565761889
... are half-developed. The surface of bigger rods is roughly striated. Plate 4. —Textures of phosphatized coprolites from diatom oozes. (A) Colloform phosphate in association with remains of recent diatoms ( Chaetoceros and Gyrosigma sp.) in the soft coprolite. (B) Globular and irregular aggregates...
Journal Article
Published: 01 March 2011
Russ. Geol. Geophys. (2011) 52 (3): 333–342.
...%), and alkalibionts are widespread (up to 15–25%); they flourish at pH 7. Halophiles become more abundant (up to 30%), and mesohalobes appear: Gyrosigma spencerii (Quek.) Griff. et Henfr., Nitzschia sigma (Kütz.) W. Sm., Nitzschia levidensis var. salinarum (Grun.), and Nitzschia tryblionella Hantzsch...
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Journal Article
Published: 01 March 2000
Journal of Sedimentary Research (2000) 70 (2): 296–309.
... from the southwestern margin of the trough commonly contain diatom species such as Cocconeis placentula, Cymbella minuta, Diploneis bombus, Gyrosigma accuminatum, Pinnularia borealis, and Synedra ulna that may indicate a fresh-water or brackish-water environment. Radiocarbon dates of shells in Type...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2004
GSA Bulletin (2004) 116 (5-6): 655–670.
... sediments should record mainly coseismic subsidence ( Hemphill-Haley, 1995b ). (6) There may be a bias in the microfossil record due to differential preservation or transport that increases the error of coseismic subsidence estimates. For example, finely silicified diatom species such as Gyrosigma spp...
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Journal Article
Journal: GSA Bulletin
Published: 18 May 2022
GSA Bulletin (2023) 135 (1-2): 407–419.
.... peis.— Gyrosigma peisonis , H. hung.— Hippodonta hungarica , K. clev.— Karayevia clevei , L. affi.— Lindavia affinis , L. ocel.— Lindavia ocellata complex, M. ellip.— Mastogloia elliptica , Navi. sp.— Navicula sp., Nitz. sp.— Nitzschia sp., P. neom.— Pinnularia neomajor , P. angl.— Placoneis...
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Journal Article
Published: 01 November 2003
Journal of Micropalaeontology (2003) 22 (2): 183–208.
... (Cleve) Cleve-Euler Gomphonema parvulum Kützing Gomphonema sagitta Schumann Gomphonema truncatum Ehrenberg Gomphonema vibrio Ehrenberg Gomphonemma subtile Ehrenberg Gyrosigma acuminatum (Kützing) Rabenhorst Hippodonta subcostulata (Hustedt) Lange-Bertalot...
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Journal Article
Journal: Geosphere
Published: 18 December 2020
Geosphere (2021) 17 (1): 171–200.
...%) decreased significantly in the sample 1 cm above the contact, but then increased to similar levels in the two higher samples. In contrast, Nitzschia sigma (1%–8%) and Tabularia fasciculata (9%–12%) increased in the sample above the contact and then decreased upward, as did Gyrosigma eximium (1%–9...
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Series: The Micropalaeontological Society, Special Publications
Published: 01 January 2017
DOI: 10.1144/TMS7.14
EISBN: 9781786203069
..., Fragilaria vaucheriae (Kützing) J.B. Petersen. 16, 18, 19, Gomphonema minutum (C. Agardh) C. Agardh. 17, Rhoicosphenia abbreviata (C. Agardh) Lange-Bertalot. 20, Cocconeis placentula var. lineata (Ehrenberg) Cleve. 21, Cocconeis pediculus Ehrenberg. 22, Fragilaria sp. 23, Gyrosigma sp. 24...
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Series: Geological Society, London, Special Publications
Published: 01 January 2000
DOI: 10.1144/GSL.SP.2000.166.01.07
EISBN: 9781862394148
.... navicularis, Gyrosigma acuminatum, G. balticum, Pleurosigma angulatum, P. sulcata HI1 20–300 cm 11 Sandflat P. sulcata, R. amphiceros, Achnanthes delicatula, Lyrella lyroides, Petroneis humerosa, Delphineis surirella, Coscinodiscus sp. HI1 5–250 cm 12 Subtidal channel P. sulcata, A. senarius...
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Series: Geological Society, London, Special Publications
Published: 01 January 2000
DOI: 10.1144/GSL.SP.2000.166.01.02
EISBN: 9781862394148
... silt contains abundant and diverse diatom assemblages. These are dominated by freshwater oligohalobian forms, with high frequencies of: Cyclotella meneghiniana (planktonic); Ellerbeckia arenaria, Gyrosigma attenuatum, (benthic epipelic); Amphora ovalis, Cocconeis placentula, Cymbella aspera, C. cistula...
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