Chaetoceros diadema (Ehrenberg) Gran, 1897

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Chaetoceros diadema

resting stage

Photographer/artist Malin Mohlin

Additional image information

Title
Chaetoceros diadema
Photographer/artist
Malin Mohlin
Copyright holder
Malin Mohlin
Copyright stamp
Malin Mohlin
Institute
Swedish meterological and hydrological institute
Contributor
Malin Mohlin
Caption
resting stage
Geographic area
Skagerrak - Swedish coast
License
Creative Commons Attribution-NoDerivs 3.0 Unported
Technique
Light microscopy
Contrast enhancement
DIC/Nomarski
Stain
No stain
Image galleries
Skagerrak-Kattegat, Diatom resting stages

Description

IDs in other systems
Tropic type
A
Morphology
One chloroplast, base of setae short, resting spores.
Other remarks

Distribution: Cosmopolitan in colder seas.
Life form
Cells united in chains
Size
Diameter = 8 - 50 µm
Resting spore
+
Literature
Jensen, K. G. & Moestrup, Ø. 1998. The genus Chaetoceros (Bacillariophyceae) in inner Danish coastal waters. Opera Botanica. 133: 1-68.
Rines, J. E. B. & Hargraves, P. E. 1988. The Chaetoceros Ehrenberg (Bacillariophyceae) flora of Narragansett Bay, Rhode Island, USA. Bibliotheca Phycologica 79: 1-196
Sundström, B. 1973. Chaetoceros arter i Öresund. MSc. Thesis Univ. of Lund. 77 pp.

Biovolumes

Species Chaetoceros diadema
Author (Ehrenberg) Gran 1897
Division CHRYSOPHYTA (HETEROKONTOPHYTA)
Class Diatomophyceae (Bacillariophyceae)
Order EUPODISCALES (BIDDULPHIALES, CENTRALES)
Trophy AU
Geometric shape oval cylinder
Formula p/4*d1*d2*h
Size class 1 2 3 4 5
Unit cell cell cell cell cell
Size range 20x17 20x15 15-25x30 15-25x20 28-40x27
Height(h), µm 17.0 15.0 30.0 20.0 27.0
Diameter(d1), µm 20.0 20.0 20.0 20.0 34.0
Diameter(d2), µm 15.0 15.0 15.0 15.0 25.5
No. of cells/counting unit 1 1 1 1 1
Calculated volume, µm3 4 004 3 533 7 065 4 710 18 376
Comment HD fac.=0.75 HD fac.=0.75 HD fac.=0.75 HD fac.=0.75 HD fac.=0.75
Calculated Carbon pg/counting unit 240 217 381 274 827

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

  • 2013-05-14 07:11:07 Regina Hansen - Updated media metadata for Chaetoceros diadema_3.jpg
  • 2013-05-14 07:10:24 Regina Hansen - Added media: Chaetoceros diadema_3.jpg
  • 2013-05-06 11:46:20 Malin Mohlin - Updated media metadata for Chaetoceros diadema_2.jpg
  • 2013-05-06 11:45:36 Malin Mohlin - Added media: Chaetoceros diadema_2.jpg