Water Body: Rock Creek             Site Location ID: NRSA-FW08MD010-D  Sample Label: 
Sample ID: NRSA0936                Client Sample ID: 546994.1
Date Sample Collected: 08/18/2009  Count Finished: 10/27/2009
Subsample ID: DT1                  Slide Replicate ID: a     Count Replicate ID: 1
Counted By: Sara Mays              Sample Type: 


   Naded Taxon Name                                                            Percent    Count  Notes   
    2245 Achnanthes reimeri Camburn                                               0.16      1.0
    2132 Achnanthes subhudsonis var. kraeuselii (Cholnoky) Cholnoky               2.56     16.0
    1024 Achnanthidium exiguum (Grunow in Cleve and Grunow) Czarnecki             0.32      2.0
    1010 Achnanthidium minutissimum (Kützing) Czarnecki                           1.76     11.0
    1036 Achnanthidium rivulare Potapova et Ponader                               0.16      1.0
    7010 Amphora inariensis Krammer                                               6.25     39.0
    7043 Amphora pediculus (Kützing) Grunow in A. Schmidt                         2.56     16.0
    7006 Amphora veneta Kützing                                                   0.16      1.0
   76001 Bacillaria paradoxa Gmelin in Linneaeus                                  0.16      1.0
   12001 Caloneis bacillum (Grunow) Cleve                                         0.32      2.0
   16011 Cocconeis pediculus Ehrenberg                                            0.96      6.0
   16004 Cocconeis placentula Ehrenberg                                           0.80      5.0
   16005 Cocconeis placentula var. euglypta (Ehrenberg) Grunow                   11.21     70.0
   20001 Cyclotella atomus Hustedt                                               21.95    137.0
   20007 Cyclotella meneghiniana Kützing                                          0.16      1.0
  197002 Diadesmis contenta (Grunow ex Van Heurck) Mann in Round, Crawford a+     0.16      1.0
  110004 Encyonema minutum (Hilse in Rabenhorst) Mann in Round, Crawford and+     0.32      2.0
  110005 Encyonema silesiacum (Bleisch in Rabenhorst) Mann in Round, Crawfor+     0.16      1.0
   33168 Eunotia implicata Nörpel, Alles et Lange-Bertalot in Alles, Nörpel +     0.32      2.0
  115008 Fallacia tenera (Hustedt in Schmidt et al.) Mann in Round, Crawford+     0.16      1.0
   34030 Fragilaria vaucheriae (Kützing) Petersen                                 0.32      2.0
  210001 Geissleria acceptata (Hustedt) Lange-Bertalot et Metzeltin               0.16      1.0
   37195 Gomphonema pygmaeum Kociolek et Stoermer                                 0.16      1.0
  209003 Gomphosphenia lingulatiformis (Lange-Bertalot et Reichardt in Lange+     0.16      1.0
 9098001 Halamphora schroederi (Hustedt) Levkov                                   0.16      1.0
  125001 Karayevia clevei (Grunow in Cleve and Grunow) Bukhtiyarova               0.32      2.0
   44073 Melosira varians Agardh                                                  0.32      2.0
   46893 Navicula antonii Lange-Bertalot in U. Rumrich, Lange-Bertalot and M+     0.16      1.0
   46014 Navicula cryptocephala Kützing                                           0.48      3.0
   46527 Navicula cryptotenella Lange-Bertalot in Krammer and Lange-Bertalot      0.32      2.0
   46648 Navicula erifuga Lange-Bertalot in Krammer and Lange-Bertalot            1.60     10.0
   46023 Navicula gregaria Donkin                                                 1.44      9.0
   46362 Navicula ingenua Hustedt                                                 0.32      2.0
   46039 Navicula minima Grunow in Van Heurck                                    10.41     65.0
   46538 Navicula perminuta Grunow in Van Heurck                                  0.16      1.0
   46896 Navicula rostellata Kützing                                              4.80     30.0
   46306 Navicula schroeteri Meister                                              2.40     15.0
   46562 Navicula subminuscula Manguin                                            0.32      2.0
   48004 Nitzschia amphibia Grunow                                                0.96      6.0
   48197 Nitzschia brevissima Grunow ex Van Heurck                                0.16      1.0
   48137 Nitzschia clausii Hantzsch                                               0.16      1.0
   48013 Nitzschia frustulum (Kützing) Grunow in Cleve and Grunow                 0.48      3.0
   48122 Nitzschia inconspicua Grunow                                             1.28      8.0
   48025 Nitzschia palea (Kützing) Smith                                          0.80      5.0
   48087 Nitzschia sigma (Kützing) Smith                                          0.16      1.0
   48349 Nitzschia tubicola Grunow in Cleve and Grunow                            0.16      1.0
  194002 Placoneis pseudanglica Cox                                               0.48      3.0
  155017 Planothidium frequentissimum (Lange-Bertalot in Krammer and Lange-B+     0.32      2.0
  155003 Planothidium lanceolatum (Brébisson ex Kützing) Lange-Bertalot           0.16      1.0
 2508001 Platessa conspicua (Mayer) Lange-Bertalot in Krammer and Lange-Bert+     7.85     49.0
 2508002 Platessa holsatica (Hustedt) Lange-Bertalot                              0.16      1.0
   55002 Reimeria sinuata (Gregory) Kociolek et Stoermer                          1.28      8.0
   57002 Rhoicosphenia abbreviata (Agardh) Lange-Bertalot                         3.36     21.0
  170006 Sellaphora pupula (Kützing) Meresckowsky                                 0.16      1.0
  170014 Sellaphora seminulum (Grunow) Mann                                       6.25     39.0
   65019 Surirella robusta Ehrenberg                                              0.32      2.0
   66024 Synedra ulna (Nitzsch) Ehrenberg                                         0.16      1.0
   70031 Thalassiosira lacustris (Grunow in Cleve and Grunow) Hasle in Hasle+     0.16      1.0
  185026 Tryblionella levidensis Smith                                            0.48      3.0

Report Date: 3/24/2023          Total Number of Taxa: 59          Total Number Counted: 624