Algae from Bemersyde, 2006
 

Bemersyde Moss is a shallow loch and surrounding wetland near Melrose in the Scottish Borders, and an important local bird reserve. Napier biologists have been engaged in a long-term study of nutrient levels and their relationship with the bird community and other aquatic life.

The study in 2005-06 had to contend with ice cover early in the year, then very low water levels which got lower as summer progressed. There was a bloom of Hydrodictyon over most of the shallower areas in the middle of summer.

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Species (Type)
Diatoms
Chlorophyta
Chlorophyta (Desmids)
Xanthophyta
Flagellates
Cyanophyta

'link' leads to an image of this species from a different location
           

 

 

         
           
 
 
         
?Amphora libyca
+
     
+
Asterionella formosa
+
       
?Chaetoceros muelleri
         
   
?Craticula ambigua
 
+
     
     
 Craticula cuspidata
+
+
     
         

Cymatopleura elliptica

+
+
     
 
   
Cymatopleura solea
+
+
   
+

Cymbella aspera

+
       
       

Gyrosigma acuminatum  

+
+
   
+
Gyrosigma
 
+
     
      
Navicula capitata
+
+
   
+
  ?
Navicula ?cryptotenella
+
   
p
+
Navicula ?rhynchocephala
?+
+
     
Navicula rhynchocephala v. amphiceros
+
       
Navicula subrhynchocephala
 
+
     
 
           
 
Neidium ?affine
 
+
     
Neidium productum
 
+
     

Nitzschia ?homburgiensis
+
+
     
 
           
Nitzschia radicula
       
+
 
Nitzschia sigmoidea
 
+
   
+
 
Nitzschia ?vermicularis
         
     
?Sellaphora laevissima
       
+
?Stauroneis anceps
         
?Staurosirella
 
+
     
Stephanodiscus minutulus
 
++
     
 
           
       
Surirella ?capronii
+
+
     
 
Surirella robusta
 
+
     
             
             
   
 
         
CHLOROPHYA (Green Algae)
         
             
?Apatococcus
(like Desmococcus, this is usually considered subaerial, found on stones, walls, etc.)
     
+
 
             
 

 Ankistrodesmus (?fusiformis)

     
p
 
Closteriopsis acicularis  
compare with Monoraphidium - Closteriopsis shows the presence of pyrenoids while Monoraphidium does not
 
+
     
?Coelastrum
(?sphaericum or microporum)
     
+
 
     
?Desmococcus
(like Apatococcus, this is usually considered subaerial, found on stones, walls, etc.)
     
+
 

  Link

Dictyosphaerium 

+
+
     
?Eremosphaeria
     
+
+
 
Hydrodictyon
     
+
+
?Kirchneriella obesa
     
p
 
             
 
Microspora 20µm.
     
p
 
             
 

 ?Monoraphidium arcuatum  
compare with Closteriopsis - shows the presence of pyrenoids while Monoraphidium does not

 
+
     
?Monoraphidium contortum  
+
 +
     
 
?Monoraphidium komarkovae  
 
+
     
Mougeotia 28µm.
     
p
 
             
  (Lugol's)
Nephrocytium limneticum
 
+
     

Pediastrum angulosum (or ? tetras)  

+
       

Pediastrum boryanum    

+
       
Scenedesmus ?aculeolatus
     
p
 
 
Scenedesmus communis  
 
+
     
             
Spirogyra 11µm.
     
p
+
Spirogyra 25µm.
         
 
?Stigeoclonium sp.
(numerous young short filaments attached at the base)
     
p
 
             
             
           
             
             
 
Tribonema
     
p
+
             
             
           
  

Closterium attenuatum

 
+
     
Closterium juncidum
     
+
 
Closterium juncidum ?v. elongatum
+
       
 
Closterium moniliferum
     
+
 
 
Closterium parvulum
+
       
 
Closterium ?sp.
     
+
 
Cosmarium ?blyttii
(larger than type)
     
p
 
       
(4th image shows striations in the middle of the semicell)
Cosmarium ?crenatulum
+
+
   
   
Cosmarium ?crenatulum
     
+
+
Cosmarium ?meneghinii
     
+
 
Cosmarium ?subcostatum
     
+
 
           
 
  Cryptomonas marssonii
 
+
     
 
?Diplostauron sp.  
       
+
 (Lugol's)   
Eudorina 
 
+
     
 (Lugol's)
Euglena acus 
 
+
     
 
 Euglena oxyuris
       
+
 (Lugol's)
 Euglena tripteris
 
+
   
+
    (Lugol's)

Euglena viridis

+
+
     
 
Mallomonas akrokomos  
 
+
     
 
?Massartia
 
+
     
       

 Phacus

+
       
  (Lugol's) 
 Phacus caudatus
 
+
     
 
Phacus nordstedtii
 
+
     
 
Phacus ?pleuronectes
     
p
 
  
Trachelomonas
+
       


 
 
         
           
             
 
?Anabaena
(filament motile ! )
     
p
 
Eucapsis
       
+
Gomphosphaeria
       
+
Merismopedia
+
   
+
 

 

 

         
Oscillatoria 4µm.
+
+
     
Oscillatoria 4µm.
 
+
     
 
Oscillatoria 8µm.
+
       
Oscillatoria 14µm.
+
+
     
 
 Phormidium 14µm.
       
+
 
Pseudanabaena
+
+
   
+
 
 
         

 

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John Kinross