Porosira glacialis (Grunow) E. Jørgensen, 1905

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Porosira glacialis

A = Chain at two focal planes; B = Valve view. (A&B DIC); C = Frustule, valve view (arrowheads=strutted processes, arrow=labiate process. (PC)

Photographer/artist Mats Kuylenstierna

Additional image information

Title
Porosira glacialis
Photographer/artist
Mats Kuylenstierna
Copyright holder
Maria Kuylenstierna
Institute
University of Gothenburg, Marine botany
Contributor
Bengt Karlson
Caption
A = Chain at two focal planes; B = Valve view. (A&B DIC); C = Frustule, valve view (arrowheads=strutted processes, arrow=labiate process. (PC)
Image galleries
Kuylenstierna, Skagerrak-Kattegat

Description

IDs in other systems
Tropic type
A
Morphology
Loose chains, one large labiate process, many strutted processes
Other remarks

Distribution: In cold water in the northern and southern hemispheres
Life form
Solitary or cells united in chains
Literature
Hasle, G. R. 1973a. Some marine plankton genera of the diatom family Thalassiosiraceae. Beiheft zur Nova Hedwigia. 45: 1-49.
Hasle, G. R. & Syvertsen, E. E. 1996. Marine diatoms. In: Tomas, C. R. (ed.) Identifying marine diatoms and dinoflagellates. Academic Press, Inc., San Diego, p. 5-385.
Takano, H. 1990. Diatoms. In “Red tide organisms in Japan-An illustrated taxonomic guide”. (Y. Fukuyo, H. Takano, M. Chihara & K. Matsuoka eds) . Uchida Rokakuho, Tokyo, p. 162-331.

Biovolumes

Species Porosira glacialis
Author (Grunow) E. Jørgensen 1905
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 6 7 8 9 10 11
Unit cell cell cell cell cell cell cell cell cell cell cell
Size range 30-35 35-40 40-45 45-50 50-55 55-60 60-65 65-70 70-75 75-80 80-85
Height(h), µm 19.8 22.2 25.8 28.2 31.8 34.2 37.8 40.2 43.8 46.2 49.8
Diameter(d1), µm 33.0 37.0 43.0 47.0 53.0 57.0 63.0 67.0 73.0 77.0 83.0
No. of cells/counting unit 1 1 1 1 1 1 1 1 1 1 1
Calculated volume, µm3 16 926 23 858 37 448 48 901 70 121 87 226 117 772 141 659 183 227 215 027 269 312
Comment 6; HD fac.=0.6 6; HD fac.=0.6 6; HD fac.=0.6 6; HD fac.=0.6 6; HD fac.=0.6 6; HD fac.=0.6 6; HD fac.=0.6 6; HD fac.=0.6 6; HD fac.=0.6 6; HD fac.=0.6 6; HD fac.=0.6
Calculated Carbon pg/counting unit 774 1 022 1 474 1 830 2 451 2 926 3 733 4 336 5 342 6 082 7 300

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

  • 2014-03-27 13:16:28 Susanne Busch - Updated media metadata for Porosira glacialis_5.jpg
  • 2014-03-27 13:15:41 Susanne Busch - Added media: Porosira glacialis_5.jpg
  • 2014-03-27 12:51:10 Susanne Busch - Updated media metadata for Porosira glacialis_4.jpg
  • 2014-03-27 12:50:34 Susanne Busch - Added media: Porosira glacialis_4.jpg
  • 2013-05-14 07:37:02 Regina Hansen - Updated media metadata for Porosira glacialis_3.jpg
  • 2013-05-14 07:36:32 Regina Hansen - Added media: Porosira glacialis_3.jpg
  • 2012-10-05 14:01:40 Ann-Turi Skjevik - Updated media metadata for Porosira glacialis_2.jpg
  • 2012-10-05 14:00:58 Ann-Turi Skjevik - Added media: Porosira glacialis_2.jpg