Cyclotella atomus Hust.

View image in original size

Cyclotella atomus

A = External valve views; B = Frustule in girdle view; C = Internal views with fultoportulae and rimoportula. (A-C SEM); D = Valve with fultoportulae (DIC)

Photographer/artist Mats Kuylenstierna

Additional image information

Title
Cyclotella atomus
Photographer/artist
Mats Kuylenstierna
Copyright holder
Maria Kuylenstierna
Institute
University of Gothenburg, Marine botany
Contributor
Bengt Karlson
Caption
A = External valve views; B = Frustule in girdle view; C = Internal views with fultoportulae and rimoportula. (A-C SEM); D = Valve with fultoportulae (DIC)
Geographic area
Skagerrak - Swedish coast
License
Creative Commons Attribution-NoDerivs 3.0 Unported
Technique
SEM Scanning Electron Microscopy
Preservation
Not described
Contrast enhancement
Not described
Stain
Sputter coated
Image galleries
Kuylenstierna, Skagerrak-Kattegat

Description

IDs in other systems
Tropic type
A
Morphology
Distinct fultoportulae at every third to fifth costa. Central area smooth and mostly with one fultoportula
Other remarks
Common in the surface waters of Gullmarsfjorden and the fjord system inside Orust. Common in rivers, lakes and coastal brackish waters (Håkansson & Clarke 1997)
Life form
Solitary
Size
Diameter = 3-10,5 µm
Literature
Hasle, G. R. 1962. Three Cyclotella species from marine localities studied in the light and electron microscopes. Nova Hedwigia. 4: 299-307.
Håkansson, H. & Clarke, K.B. 1997. Morphology and taxonomy of the centric diatom Cyclotella atomus. Nova Hedwigia. 65: 207-219.
Schoeman, F. R. & Archibald, R. E. M. 1976. The diatom flora of South Africa. National Institute for Water Research CSIR. Special Report WAT 50.

Biovolumes

Species Cyclotella atomus
Author Hustedt 1937
Division CHRYSOPHYTA (HETEROKONTOPHYTA)
Class Diatomophyceae (Bacillariophyceae)
Order EUPODISCALES (BIDDULPHIALES, CENTRALES)
Trophy AU
Geometric shape cylinder
Formula p/4*d^2*h
Size class 1 2 3 4 5
Unit cell cell cell cell cell
Size range 4 5 6 7 8
Height(h), µm 2.0 2.5 3.0 3.5 4.0
Diameter(d1), µm 4.0 5.0 6.0 7.0 8.0
No. of cells/counting unit 1 1 1 1 1
Calculated volume, µm3 25 49 85 135 201
Comment 6 6 6 6 6
Calculated Carbon pg/counting unit 4 7 11 15 21

Source

Olenina, I., Hajdu, S., Edler, L., Andersson, A., Wasmund, N., Busch, S., Göbel, J., Gromisz, S., Huseby, S., Huttunen, M., Jaanus, A., Kokkonen, P., Ledaine, I. and Niemkiewicz, E. 2006 Biovolumes and size-classes of phytoplankton in the Baltic Sea HELCOM Balt.Sea Environ. Proc. No. 106, 144pp. (PDF),
PEG_BVOL.zip

Change History

  • 2011-09-23 20:37:40 Bengt Karlson - Updated media metadata for Cyclotella atomus_1.gif