1-18 OF 18 RESULTS FOR

Eucampia antarctica

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
×Close Modal
Sort by
Journal Article
Published: 01 September 2014
Journal of Micropalaeontology (2014) 33 (2): 131-142.
...Claire S. Allen Abstract The varied aspect ratios observed in the Antarctic marine diatom Eucampia antarctica are described and quantified. Data are compiled from detailed measurements of the gross morphology of winter stage specimens found in samples of modern marine sediments. Surface sediment...
FIGURES | View All (6)
Journal Article
Published: 16 February 1983
Micropaleontology (1983) 29 (1): 6-10.
Image
Location maps. ( a ) Map of sample sites for  <b>Eucampia</b> <b>antarctica</b>  morphome...
Published: 01 September 2014
Fig. 2. Location maps. ( a ) Map of sample sites for Eucampia antarctica morphometric study. ( b ) Average summer sea surface temperatures (SST) for the Antarctic Peninsula region compiled from MODIS SST data. The seasonal climatology comprises daily averaged data for the months of mid-December
Image
Cumulative plots of valve volumes for each sample of  <b>Eucampia</b> <b>antarctica</b> ....
Published: 01 September 2014
Fig. 6. Cumulative plots of valve volumes for each sample of Eucampia antarctica .
Image
Figure 1. A:  <b>Eucampia</b> <b>antarctica</b>  var.  recta  terminal valve (note pointe...
in > Geology
Published: 01 February 2005
Figure 1. A: Eucampia antarctica var. recta terminal valve (note pointed elevation of valve). B: Intercalary valve (note flattened elevations of valve). C, D: Colonial chain illustrations indicating position of terminal and intercalary valves. Straight colonial form is E. antarctica var
Journal Article
Journal: Geology
Published: 01 February 2005
Geology (2005) 33 (2): 137-140.
...Figure 1. A: Eucampia antarctica var. recta terminal valve (note pointed elevation of valve). B: Intercalary valve (note flattened elevations of valve). C, D: Colonial chain illustrations indicating position of terminal and intercalary valves. Straight colonial form is E. antarctica var...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 November 2009
GSA Bulletin (2009) 121 (11-12): 1711-1725.
..., Fragilariopsis kerguelensis, Fragilariopsis curta, Cocconeis spp., and Eucampia antarctica var. antarctica. Taxa of secondary abundance include Thalassiosira gracilis, Fragilariopsis angulata, Rhizosolenia spp., and Eucampia antarctica var. recta. Qualitative abundance data reveal substantial changes in diatom...
FIGURES | View All (7)
Image
Dendrograms presenting results of the agglomerative hierarchical clustering...
Published: 01 September 2014
Fig. 4. Dendrograms presenting results of the agglomerative hierarchical clustering analysis on ( a ) the ratio of symmetrical versus asymmetrical Eucampia antarctica valves; ( b ) the ratio of terminal versus intercalary Eucampia antarctica valves; ( c ) the basal widths of Eucampia
Image
Scattergrams of the valve width and averaged height (aspect ratio) for each...
Published: 01 September 2014
Fig. 5. Scattergrams of the valve width and averaged height (aspect ratio) for each sample of Eucampia antarctica .
Image
Maps illustrating ( a ) diatom concentrations ( b ) relative abundance of  ...
Published: 01 September 2014
Fig. 3. Maps illustrating ( a ) diatom concentrations ( b ) relative abundance of Eucampia antarctica in surface sediment samples from the Scotia Sea and Antarctic Peninsula; and the relative contributions of ( c ) asymmetrical/symmetrical and ( d ) terminal/ intercalary valves to the Eucampia
Image
Morphological structure and measurements. ( a ) Schematic drawing of colony...
Published: 01 September 2014
Fig. 1. Morphological structure and measurements. ( a ) Schematic drawing of colony structures of Eucampia antarctica indicating position of terminal and intercalary valves. The straight colonial form with symmetrical valves (left) is E. antarctica var. recta and the curved form comprised
Image
SEM photographs of the  A)  8–7.5 φ,  B)  7.5–7 φ,  C)  7–6.5 φ,  D)  6.5–6...
Published: 01 August 2011
Figure 5 SEM photographs of the A) 8–7.5 φ, B) 7.5–7 φ, C) 7–6.5 φ, D) 6.5–6 φ, and E) 6–4 φ fractions of PC072 and F) a close-up of the diatom Eucampia antarctica . White circles mark individual terrigenous silt grains.
Journal Article
Published: 01 September 2014
Journal of Micropalaeontology (2014) 33 (2): 109-110.
... phyletic lineages of the genus Follicucullus , from its first appearance to its extinction. Claire Allen ’s paper evaluates whether morphological traits (colony length, valve symmetry and aspect ratio) in the Antarctic marine diatom Eucampia antarctica offer potential as quantitative proxies...
Journal Article
Published: 01 August 2011
Journal of Sedimentary Research (2011) 81 (8): 600-610.
...Figure 5 SEM photographs of the A) 8–7.5 φ, B) 7.5–7 φ, C) 7–6.5 φ, D) 6.5–6 φ, and E) 6–4 φ fractions of PC072 and F) a close-up of the diatom Eucampia antarctica . White circles mark individual terrigenous silt grains. ...
FIGURES | View All (6)
Journal Article
Journal: Geology
Published: 01 July 2004
Geology (2004) 32 (7): 557-560.
... gram of dried sediment (v/gds), including 64% pennate diatoms and 36% centric diatoms (discounting Chaetoceros ). The robust, nondiscoid centric diatom Eucampia antarctica constituted 4% of all diatoms. Pennates in the initial sample included a wide variety of forms, from long, slender taxa...
FIGURES
Journal Article
Published: 01 September 2014
Journal of Micropalaeontology (2014) 33 (2): 111-120.
... [Thwaites ex W. Smith] Cleve). The recognition of spring and winter forms in Proboscia Sundström and Eucampia antarctica (Castracane) Mangin indicates that different morphologies correlate with seasons ( Fryxell, 1991 , 1994 ; Jordan et al ., 1991 ), while Chaetoceros dichaeta Ehrenberg produces...
FIGURES | View All (5)
Journal Article
Journal: Geology
Published: 01 March 2005
Geology (2005) 33 (3): 173-176.
... benthic ( Cocconeis fasciolata ) and planktonic or sea-ice species ( Eucampia antarctica , Thalassiosira antarctica ) indicating (seasonally) open-marine conditions ( Cremer et al., 2003 ). Planktonic diatoms and sea-ice diatoms (especially Fragilariopsis curta ) dominate the lower part of zone 4...
FIGURES | View All (4)
Series: Geological Society, London, Memoirs
Published: 01 January 2002
DOI: 10.1144/GSL.MEM.2002.022.01.23
EISBN: 9781862393974
...%) and increases downwards to a peak of 10–25% of the total radiolarian fauna ( Fig. 6 ). Similarly, downcore variations in the abundance of the diatom Eucampia antarctica were used by Jordan & Pudsey (1992) to delineate glacial and interglacial stages in Scotia Sea cores. Biogenic barium can be a more...
FIGURES | View All (10)