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


Water Body: Potomac River          Site Location ID: NRSA-FW08MD014  Sample Label:
Sample ID: NRSA0060                Client Sample ID: 526034.1
Date Sample Collected: 07/03/2008  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   
   94053 Achnanthes brevipes var. intermedia (Kützing) Cleve                      0.50      3.0
    1046 Achnanthidium eutrophilum (Lange-Bertalot in Lange-Bertalot and Met+     0.83      5.0
    1010 Achnanthidium minutissimum (Kützing) Czarnecki                           3.16     19.0
    1036 Achnanthidium rivulare Potapova et Ponader                               1.00      6.0
    7006 Amphora veneta Kützing                                                   0.33      2.0
   12010 Caloneis silicula (Ehrenberg) Cleve                                      0.16      1.0
   16005 Cocconeis placentula var. euglypta (Ehrenberg) Grunow                    9.16     55.0
   16003 Cocconeis placentula var. lineata (Ehrenberg) Van Heurck                 1.00      6.0
  201001 Ctenophora pulchella (Ralfs ex Kützing) Williams et Round                3.00     18.0
  110009 Encyonema lunatum (Smith) Van Heurck                                     0.16      1.0
   33183 Eunotia minor (Kützing) Grunow in Van Heurck                             0.16      1.0
   34211 Fragilaria rhabdosoma Ehrenberg                                          0.83      5.0
   34030 Fragilaria vaucheriae (Kützing) Petersen                                 6.33     38.0
   34141 Fragilaria zeilleri var. elliptica Gasse                                 4.83     29.0 Yes
  210003 Geissleria decussis (Østrup) Lange-Bertalot et Metzeltin                 1.00      6.0
   37278 Gomphonema lagenula Kützing                                              1.00      6.0
   37029 Gomphonema subclavatum (Grunow in Van Heurck) Grunow                     2.16     13.0
  213001 Hippodonta capitata (Ehrenberg) Lange-Bertalot, Metzeltin et Witkow+     0.16      1.0
  130006 Luticola goeppertiana (Bleisch in Rabenhorst) Mann in Round, Crawfo+     0.66      4.0
  130003 Luticola ventricosa (Kützing) Mann in Round, Crawford and Mann           0.16      1.0
   46661 Navicula capitatoradiata Germain                                         0.16      1.0
   46039 Navicula minima Grunow in Van Heurck                                     0.83      5.0
   46289 Navicula peregrina (Ehrenberg) Kützing                                   0.83      5.0
   46649 Navicula recens (Lange-Bertalot) Lange-Bertalot in Krammer and Lang+     8.83     53.0 Yes
   46896 Navicula rostellata Kützing                                              0.16      1.0
   46400 Navicula symmetrica Patrick                                              0.16      1.0
   48004 Nitzschia amphibia Grunow                                               38.00    228.0
   48197 Nitzschia brevissima Grunow ex Van Heurck                                2.83     17.0
   48122 Nitzschia inconspicua Grunow                                             2.16     13.0
  194004 Placoneis clementis (Grunow) Cox                                         0.33      2.0
   53002 Plagiotropis lepidoptera var. proboscidea (Cleve) Reimer in Patrick+     0.33      2.0
  155009 Planothidium delicatulum (Kützing) Round et Bukhtiyarova                 0.50      3.0
  155017 Planothidium frequentissimum (Lange-Bertalot in Krammer and Lange-B+     1.33      8.0
  155018 Planothidium rostratum (Østrup) Lange-Bertalot                           0.33      2.0
   55002 Reimeria sinuata (Gregory) Kociolek et Stoermer                          0.16      1.0
   57002 Rhoicosphenia abbreviata (Agardh) Lange-Bertalot                         3.00     18.0
  172009 Staurosira aff. construens NAWQA EAM Ehrenberg                           1.33      8.0
  172001 Staurosira construens Ehrenberg                                          0.16      1.0
  172006 Staurosira construens var. venter (Ehrenberg) Hamilton in Hamilton,+     1.33      8.0
   66016 Synedra rumpens Kützing                                                  0.16      1.0
  200002 Tabularia fasciculata (Agardh) Williams et Round                         0.33      2.0


Report Date: 9/25/2021          Total Number of Taxa: 41          Total Number Counted: 600

Count Notes:

  ?
  Comments: Row 1 x 105, y 3, y 10 Several valves appear highly dissolved in the sample. There are also several broken valves. The latter were identified and included in the count to the extent possible.
 
Taxa Notes:
 
Naded 34141: This taxon needs revision. The striae count of the pictured specimen are a little higher than the ones illustrated in K&L-B 1991. The shape of the pictured specimen resembles F. construens var. subsalina of the type, but striae count is much higher.
Naded 46649: Images of this taxon could not be collected because most valves are dissolved
Naded 130001: There is somehting different about this population, perhaps the valve outline?


 


 
Counts version 3.3 - last revision 2/16/2021
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