North American Diatom Ecological Database - NADED
Phycology Section, Patrick Center for Environmental Research
Diatom Count Report
 


Water Body: Potomac River          Site Location ID: NRSA-FW08MD012  Sample Label:
Sample ID: NRSA0066                Client Sample ID: 526154.1
Date Sample Collected: 07/16/2008  Count Finished:
Subsample ID: DT1                  Slide Replicate ID: a     Count Replicate ID: 1
Counted By: Eduardo Morales        Sample Type:



   Naded Taxon Name                                                            Percent    Count Notes   
    2132 Achnanthes subhudsonis var. kraeuselii (Cholnoky) Cholnoky               0.33      2.0
    1010 Achnanthidium minutissimum (Kützing) Czarnecki                           1.66     10.0
    1023 Achnanthidium pyrenaicum (Hustedt) Kobayashi                             0.50      3.0
    1036 Achnanthidium rivulare Potapova et Ponader                               0.83      5.0
    7075 Amphora copulata (Kützing) Schoeman et Archibald                         1.16      7.0
    7010 Amphora inariensis Krammer                                               0.16      1.0
    7042 Amphora montana Krasske                                                  0.83      5.0
    7043 Amphora pediculus (Kützing) Grunow in A. Schmidt                         1.00      6.0
   76001 Bacillaria paradoxa Gmelin in Linneaeus                                  0.50      3.0
   12001 Caloneis bacillum (Grunow) Cleve                                         0.66      4.0
   14001 Capartogramma crucicula (Grunow ex Cleve) Ross                           0.50      3.0
   16011 Cocconeis pediculus Ehrenberg                                            4.83     29.0
   16005 Cocconeis placentula var. euglypta (Ehrenberg) Grunow                   10.83     65.0
   16003 Cocconeis placentula var. lineata (Ehrenberg) Van Heurck                 0.16      1.0
   20007 Cyclotella meneghiniana Kützing                                          0.16      1.0
   23068 Cymbella tumida (Brébisson ex Kützing) Van Heurck                        0.16      1.0
   23083 Cymbella turgidula Grunow in Schmidt                                     0.50      3.0
   27013 Diatoma vulgaris Bory                                                    1.33      8.0
  110013 Encyonema prostratum (Berkeley) Ralfs                                    0.33      2.0
  203008 Encyonopsis subminuta Krammer et Reichardt in Krammer                    0.33      2.0
  187002 Eucocconeis laevis (Østrup) Lange-Bertalot in Lange-Bertalot and Ge+     0.16      1.0
   34006 Fragilaria capucina Desmazières                                          0.16      1.0
   34038 Fragilaria pinnata var. acuminata Mayer                                  0.16      1.0
   34030 Fragilaria vaucheriae (Kützing) Petersen                                 0.33      2.0
   36010 Gomphoneis minuta (Stone in McLaughlin and Stone) Kociolek et Stoer+     0.16      1.0
   37197 Gomphonema kobayasii Kociolek et Kingston                                0.66      4.0
   37278 Gomphonema lagenula Kützing                                              0.66      4.0
   37178 Gomphonema minutum (Agardh) Agardh                                       0.33      2.0
   37065 Gomphonema olivaceum (Lyngbye) Kützing                                   0.50      3.0
   37193 Gomphonema patricki Kociolek et Stoermer in Kociolek, Stoermer and +     0.16      1.0
   37194 Gomphonema pumilum var. rigidum Reichardt et Lange-Bertalot in Reic+     2.16     13.0
   37080 Gomphonema rhombicum Fricke in Schmidt et al.                            0.33      2.0
   37029 Gomphonema subclavatum (Grunow in Van Heurck) Grunow                     0.16      1.0
   38001 Gyrosigma acuminatum (Kützing) Rabenhorst                                0.83      5.0
   38027 Gyrosigma reimeri Sterrenburg                                            1.16      7.0
   38004 Gyrosigma spencerii (Smith) Griffith et Henfrey                          0.66      4.0
  125001 Karayevia clevei (Grunow in Cleve and Grunow) Bukhtiyarova               0.33      2.0
  130002 Luticola mutica (Kützing) Mann in Round, Crawford and Mann               0.16      1.0
   44073 Melosira varians Agardh                                                  1.00      6.0
   45001 Meridion circulare (Greville) Agardh                                     0.16      1.0
   45002 Meridion circulare var. constrictum (Ralfs) Van Heurck                   0.16      1.0
   93180 Navicula aff. effrenata NAWQA EAM Krasske                                0.16      1.0
   46789 Navicula aff. subminuscula ANS NAWQA EAM Manguin                         5.66     34.0
   46893 Navicula antonii Lange-Bertalot in U. Rumrich, Lange-Bertalot and M+     0.50      3.0
   46661 Navicula capitatoradiata Germain                                         1.16      7.0
   46014 Navicula cryptocephala Kützing                                           0.16      1.0
   46527 Navicula cryptotenella Lange-Bertalot in Krammer and Lange-Bertalot      9.16     55.0 Yes
   46648 Navicula erifuga Lange-Bertalot in Krammer and Lange-Bertalot            1.16      7.0
   46616 Navicula germainii Wallace                                               1.00      6.0
   46373 Navicula menisculus Schumann                                             1.16      7.0
   46039 Navicula minima Grunow in Van Heurck                                     2.00     12.0
   93172 Navicula radiosafallax Lange-Bertalot                                    0.16      1.0
   46649 Navicula recens (Lange-Bertalot) Lange-Bertalot in Krammer and Lang+     3.16     19.0
   46896 Navicula rostellata Kützing                                              5.33     32.0 Yes
   93177 Navicula ruttneri var. capitata Hustedt                                  3.16     19.0
   46394 Navicula schroeteri var. escambia Patrick                                0.83      5.0
   46400 Navicula symmetrica Patrick                                              0.66      4.0
   46104 Navicula tripunctata (Müller) Bory                                       0.50      3.0
   46774 Navicula trivialis Lange-Bertalot                                        0.16      1.0
   46467 Navicula vaucheriae Petersen                                             0.16      1.0
   46504 Navicula veneta Kützing                                                  1.16      7.0
   46895 Navicula viridulacalcis Lange-Bertalot in U. Rumrich, Lange-Bertalo+     0.66      4.0
   47011 Neidium dubium (Ehrenberg) Cleve                                         0.16      1.0
   48004 Nitzschia amphibia Grunow                                                1.00      6.0
   48229 Nitzschia angustatula Lange-Bertalot in Lange-Bertalot and Krammer       0.16      1.0
   48198 Nitzschia communis Rabenhorst in Grunow                                  0.33      2.0
   48008 Nitzschia dissipata (Kützing) Grunow                                     0.16      1.0
   48099 Nitzschia dissipata var. media (Hantzsch) Grunow in Van Heurck           0.66      4.0
   48020 Nitzschia heufleriana Grunow                                             0.33      2.0
   48122 Nitzschia inconspicua Grunow                                             0.16      1.0
   48087 Nitzschia sigma (Kützing) Smith                                          0.33      2.0
   48034 Nitzschia subtilis (Kützing) Grunow in Cleve and Grunow                  0.33      2.0
   48349 Nitzschia tubicola Grunow in Cleve and Grunow                            0.33      2.0
   52194 Pinnularia interrupta Smith                                              8.00     48.0
  194009 Placoneis placentula (Ehrenberg) Mereschkowsky                           0.33      2.0
  155017 Planothidium frequentissimum (Lange-Bertalot in Krammer and Lange-B+     0.16      1.0
  155018 Planothidium rostratum (Østrup) Lange-Bertalot                           0.33      2.0
 2508001 Platessa conspicua (Mayer) Lange-Bertalot in Krammer and Lange-Bert+     0.16      1.0
  158001 Pleurosira laevis (Ehrenberg) Compère                                    0.33      2.0
   55002 Reimeria sinuata (Gregory) Kociolek et Stoermer                          2.66     16.0
   57002 Rhoicosphenia abbreviata (Agardh) Lange-Bertalot                         3.66     22.0
  170001 Sellaphora laevissima (Kützing) Mann                                     0.16      1.0
  170006 Sellaphora pupula (Kützing) Meresckowsky                                 0.66      4.0
  170014 Sellaphora seminulum (Grunow) Mann                                       0.33      2.0
   62007 Stauroneis smithii Grunow                                                0.16      1.0
  172005 Staurosira construens var. binodis (Ehrenberg) Hamilton in Hamilton+     0.66      4.0
  175001 Staurosirella leptostauron (Ehrenberg) Williams et Round                 0.33      2.0
  175005 Staurosirella pinnata (Ehrenberg) Williams et Round                      0.16      1.0
   65002 Surirella angusta Kützing                                                0.16      1.0
   66016 Synedra rumpens Kützing                                                  0.66      4.0
   66058 Synedra ulna var. contracta Østrup                                       0.16      1.0
  200002 Tabularia fasciculata (Agardh) Williams et Round                         0.16      1.0
  185023 Tryblionella apiculata Gregory                                           0.16      1.0
  185021 Tryblionella calida (Grunow in Cleve and Grunow) Mann in Round, Cra+     0.50      3.0
  185040 Tryblionella plana (Smith) Pelletan                                      0.33      2.0
  185027 Tryblionella victoriae Grunow                                            0.16      1.0


Report Date: 11/27/2021          Total Number of Taxa: 96          Total Number Counted: 600

Count Notes:

  ?
  Comments: Row 1 x 107, y 4, y 16; Row 2 x 106, y 16, y 9 Some valves are partially dissolved, yet this does not represent a problem in identifying the great majority of taxa.
 
Taxa Notes:
 
Naded 46527: Does not seem like the typical cryptotenella with pointy ends, yet it is difficult to justify separation of this population from cryptotenella
Naded 46896: Noo good valves were found to take acceptable images


 


 
Counts version 3.3 - last revision 2/16/2021
If problems with this page, please email