Thalassiosira constricta Gaarder, 1938

Description

IDs in other systems
Morphology
A central cluster of strutted processes, one ring of strutted processes, and one labiate process within this ring. Resting spore.
Other remarks

Distribution: Arctic - subarctic, Skagerrak
Life form
Cells in loose chains
Size
Diameter 12-32 µm
Resting spore
+
Literature
Gaarder, K. R. 1938. Phytoplankton studies from the Tromsø district 1930-31. Tromsø Museums Årshefter, Naturhistorisk avd. nr. 11. Vol. 55 (1932) nr.1.
Heimdal, B. R. 1971. Vegetative cells and resting spores of Thalassiosira constricta Gaarder (Bacillariophyceae). Norw. J. Bot. 18, 153-159.
Heimdal, B. R. 1974. Further observations on the resting spores of Thalassiosira constricta Gaarder (Bacillariophyceae). Norw. J. Bot. 21, 303-307.

Biovolumes

Species Thalassiosira constricta
Author Gaarder 1938
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
Unit cell cell
Size range 15-35 20x10
Height(h), µm 25.0 10.0
Diameter(d1), µm 25.0 20.0
No. of cells/counting unit 1 1
Calculated volume, µm3 12 266 3 140
Comment HD fac.=1
Calculated Carbon pg/counting unit 596 197

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