Diatom Gallery #4

Eunotioid and Asymmetrical Naviculoid Forms


Eunotioid Forms

Eunotia

1. Eunotia
 

640x
    Perrault Bog
plant detritus sample
9/10/01
 
2. Eunotia
 

500x
    same as above
 
3. Eunotia
 

800x
    Peepsock Trail lower stream
aquatic plant sample
9/29/01
 
4. Eunotia
 

800x
    Torch Lake from boat
aquatic plant sample
9/26/01
pH 7.2, 20°C
 
5. Eunotia
 

800x
    same as above
 
6. Eunotia
 

800x
    Dollar Bay at boat launch
surface plankton tow
10/10/01
pH 7.1, 16°C
 
7. Eunotia
 

800x
    Dollar Bay at boat launch
oblique plankton tow
May 2006
10.5°C
 
8. Eunotia serra var. diadema
 

800x
    Arnheim Sloughs site #1
plant detritus sample
10/20/05
14°C
 

Asymmetrical Naviculoid Forms

Amphora

1. Amphora ovalis
 

800x
    creek south of Calumet
filamentous algae sample
10/3/01
 

Cymbella

1. Cymbella
 

400x
    Torch Lake from boat
aquatic plant sample
9/26/01
pH 7.2, 20°C
 
2. Cymbella
 

500x
    Dollar Bay from boat
aquatic plant sample
9/26/01
 
3. Cymbella
 

800x
    Dollar Bay from boat
aquatic plant sample
9/26/01
 
4. Cymbella
 

800x
    Seneca Creek at Cliff Dr
aquatic plant sample
5/31/10
 
5. Cymbella
 

800x
    Dollar Bay at boat launch
plankton tow
5/20/10
20°C
 
6. Cymbella
 

800x
    Keweenaw Waterway at MTU
oblique plankton tow
8/12/10
pH 8.6, 26°C, 132 uS
 
7. Cymbella
 

800x
    Pilgrim River upstream of US-41
rock scraping
5/24/10
18°C
 
8. Cymbella
 

800x
    Sturgeon River Sloughs site #1
aquatic plant sample
10/20/05
10.5°C
 

Encyonema

1. Encyonema
 

640x
    Keweenaw Waterway by MTU
rock scraping
9/12/01
 
2. Encyonema
 

500x
    Pilgrim River downstream of US-41
aquatic plant sample
9/19/01
 
3. Encyonema
 

500x

500x
  Pilgrim River upstream of US-41
rock scraping
5/24/10
18°C
 
4. Encyonema
 

500x

500x
  same as above
 
5. Encyonema
 

800x
    same as above
 

Gomphoneis

1. Gomphoneis
 

800x
    Pilgrim River upstream of US-41
rock scraping
5/24/10
18°C
 
2. Gomphoneis
 

500x
    same as above
 

Gomphonema

1. Gomphonema acuminatum
 

1000x
    Dollar Bay from boat
aquatic plant sample
9/26/01
 
2. Gomphonema acuminatum
 

800x
    Rice Lake from northern shore
aquatic plant sample
9/27/05
20°C
 
3. Gomphonema
 

800x
    Dollar Bay at boat launch
plankton tow
5/20/10
20°C
 
4. Gomphonema truncatum
 

800x
    Dollar Bay from boat
aquatic plant sample
9/26/01
 
5. Gomphonema truncatum var. capitatum
 

1000x
    same as above
 
6. Gomphonema sphaerophorum
 

1000x
    Keweenaw Waterway at South Entry
aquatic plant sample
9/19/01
 
7. Gomphonema augur
 

800x
    Jacobsville old quarry pond
aquatic plant sample
8/7/10
pH 7.6, 17°C, 121 uS
 
8. Gomphonema augur
 

800x
    same as above