This class consists of centric diatoms. Specimens are organized into orders following Wehr et al. (2015).
Thalassiosirales
Cyclotella
1. Cyclotella
1000x
1000x
Dollar Bay from boat
aquatic plant sample
9/26/01
aquatic plant sample
9/26/01
2. Cyclotella
800x
Pilgrim River upstream of US-41
rock scraping
5/24/10
18°C
rock scraping
5/24/10
18°C
3. Cyclotella
800x
same as above
Stephanodiscus
1. Stephanodiscus
800x
Portage Lake from boat
oblique plankton tow
9/18/05
20°C
oblique plankton tow
9/18/05
20°C
2. Stephanodiscus
800x
800x
Keweenaw Waterway at MTU
plankton tow
6/11/03
16.5°C
plankton tow
6/11/03
16.5°C
3. Stephanodiscus
800x
800x
Keweenaw Waterway at MTU
surface plankton tow
11/8/01
surface plankton tow
11/8/01
4. Stephanodiscus
800x
800x
Keweenaw Waterway at MTU
plankton tow
6/11/03
16.5°C
plankton tow
6/11/03
16.5°C
Melosirales
Melosira
1. Melosira varians
800x
800x
Pilgrim River upstream of US-41
rock scraping
5/24/10
18°C
rock scraping
5/24/10
18°C
2. Melosira varians
800x
Pilgrim River upstream of US-41
rock scraping
9/19/01
rock scraping
9/19/01
3. Melosira varians
800x
same as above
4. Melosira granulata
320x
1000x
Dollar Bay from boat
surface plankton tow
9/26/01
surface plankton tow
9/26/01
5. Melosira granulata
800x
same as above
6. Melosira
800x
Keweenaw Waterway at MTU
plankton tow
10/29/07
plankton tow
10/29/07
7. Melosira
800x
Dollar Bay at boat launch
plankton tow
5/20/10
20°C
plankton tow
5/20/10
20°C
8. Melosira
640x
Keweenaw Waterway by MTU
rock scraping
9/12/01
rock scraping
9/12/01
Rhizosoleniales
Acanthoceras
1. Acanthoceras
640x
Dollar Bay from boat
oblique plankton tow
7/29/10
pH 8.9, 27°C, 133 uS
oblique plankton tow
7/29/10
pH 8.9, 27°C, 133 uS
2. Acanthoceras
800x
Keweenaw Waterway at MTU
oblique plankton tow
10/16/05
13.5°C
oblique plankton tow
10/16/05
13.5°C
3. Acanthoceras
800x
same as above
Urosolenia
1. Urosolenia eriensis
640x
Torch Lake at Hubbell boat launch
oblique plankton tow
10/15/05
13°C
oblique plankton tow
10/15/05
13°C
2. Urosolenia eriensis
500x
same as above
3. Urosolenia eriensis
400x
800x
Torch Lake at Hubbell boat launch
surface plankton tow
5/20/10
17°C
surface plankton tow
5/20/10
17°C
4. Urosolenia eriensis
500x
Keweenaw Waterway at MTU
surface plankton tow
11/22/05
6.0°C
surface plankton tow
11/22/05
6.0°C
5. Urosolenia longiseta
320x
500x
Pike Bay from dock
oblique plankton tow
7/30/06
24.5°C
oblique plankton tow
7/30/06
24.5°C