Diatom Gallery #1

Centric Forms

Diatoms comprise a massive group that is undergoing phylogenetic and taxonomic revisions, so here I divide them into phenetically-based galleries following Wehr and Sheath (2003).


Centric Forms

Acanthoceras

1. Acanthoceras
 
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    Dollar Bay from boat
oblique plankton tow
7/29/10
pH 8.9, 27°C, 133 uS
 
2. Acanthoceras
 
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    Keweenaw Waterway at MTU
oblique plankton tow
10/16/05
13.5°C
 
3. Acanthoceras
 
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    same as above
 

Cyclotella

1. Cyclotella
 
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  Dollar Bay from boat
aquatic plant sample
9/26/01
 
2. Cyclotella
 
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    Pilgrim River upstream of US-41
rock scraping
5/24/10
18°C
 
3. Cyclotella
 
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    same as above
 

Melosira

1. Melosira varians
 

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  Pilgrim River upstream of US-41
rock scraping
5/24/10
18°C
 
2. Melosira varians
 

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    Pilgrim River upstream of US-41
rock scraping
9/19/01
 
3. Melosira varians
 

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    same as above
 
4. Melosira granulata
 

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  Dollar Bay from boat
surface plankton tow
9/26/01
 
5. Melosira granulata
 

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    same as above
 
6. Melosira
 

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    Keweenaw Waterway at MTU
plankton tow
10/29/07
 
7. Melosira
 

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    Dollar Bay at boat launch
plankton tow
5/20/10
20°C
 
8. Melosira
 

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    Keweenaw Waterway by MTU
rock scraping
9/12/01
 

Stephanodiscus

1. Stephanodiscus
 

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    Portage Lake from boat
oblique plankton tow
9/18/05
20°C
 
2. Stephanodiscus
 

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  Keweenaw Waterway at MTU
plankton tow
6/11/03
16.5°C
 
3. Stephanodiscus
 

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  Keweenaw Waterway at MTU
surface plankton tow
11/8/01
 
4. Stephanodiscus
 

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  Keweenaw Waterway at MTU
plankton tow
6/11/03
16.5°C
 

Urosolenia

1. Urosolenia eriensis
 
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    Torch Lake at Hubbell boat launch
oblique plankton tow
10/15/05
13°C
 
2. Urosolenia eriensis
 
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    same as above
 
3. Urosolenia eriensis
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  Torch Lake at Hubbell boat launch
surface plankton tow
5/20/10
17°C
 
4. Urosolenia eriensis
 
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    Keweenaw Waterway at MTU
surface plankton tow
11/22/05
6.0°C
 
5. Urosolenia longiseta
 
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  Pike Bay from dock
oblique plankton tow
7/30/06
24.5°C