Category Archives: Phylum Bacillariophyta

Biddulphia sp. Diatom , TheRace Rocks taxonomy

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Domain Eukarya
Kingdom Chromista
Subkingdom Chromobiota
Infrakingdom Heterokonta
Phylum Bacillariophyta
Class Bacillariophyceae
Subclass Bacillariophycidae
Order Biddulphiales
Family Bidduulphiaceae
Genus Biddulphia
Species sp. ?
Common Name: Diatom

Other members of the Phylum Bacillariophyta

taxonomy iconReturn to the Race Rocks Taxonomy
and Image File
pearsonlogo2_f2The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams.

 name –year (PC)

Pleurosigma sp. Diatom –The Race Rocks Taxonomy

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Photo from Wikipedia -Frank Fox
 

 

 

Organisms categorized within the genus Pleurosigma appear all over the world, regardless of location.  The genus is one of the larger groups of diatoms, containing hundred of different species and also making it very difficult to identify exact taxonomy of organisms.

Domain Eukarya
Kingdom Chromista
Subkingdom Chromobiota
Infrakingdom Heterokonta
Phylum Bacillariophyta
Class Bacillariophyceae
Subclass Bacillariophycidae
Order Naviculales
Family Pleurosigmataceae
Genus Pleurosigma
Species sp.?  possibly P. angulatum
Common Name: Diatom

Other members of the Phylum Bacillariophyta

taxonomyiconReturn to the Race Rocks Taxonomy
and Image File
pearsonlogo2_f2The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams.

Thalassiothrix sp.

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mixture of Thallasiothrix and several other diaton species from a plankton tow.

 

Thallasiothrix microscopic view

 

 

From Phyto’pedia Length (apical axis): 10 – 110 μm
Width (transapical axis): 2 – 4 μm
Height (pervalvar axis): 3 – 8 μm
Marginal areolae: 10 – 12 in 10 μm
(Cupp 1943, Kraberg et al. 2010)

Commonly found in nutrient-rich upwelling regions (Abrantes 1988, cited in Kobayashi and Takahashi 2002). Its presence indicates conditions of high productivity (Schrader and Sorknes 1990, cited in Kobayashi and Takahashi 2002). Optimal temperature ∼15 °C (Resende 2007). Salinity range from ∼12 – 33 (Demir 2007, Burns 1977).

 

Domain Eukarya
Kingdom Chromista
Subkingdom Chromobiota
Infrakingdom Heterokonta
Phylum Bacillariophyta
Class Bacillariophyceae
Subclass Bacillariophycidae
Order Thalassionematales
Family Thalassionemataceae
Genus Thallasiothrix
Species sp.?  possibly T fraunfeldi var. nitzschioides
Common Name: Diatom

Other members of the Phylum Bacillariophyta

taxonomy iconReturn to the Race Rocks Taxonomy
and Image File
pearsonlogo2_f2The Race Rocks taxonomy is a collaborative venture originally started with the Biology and Environmental Systems students of Lester Pearson College UWC. It now also has contributions added by Faculty, Staff, Volunteers and Observers on the remote control webcams.

 name –year (PC)