North American Diatom Ecological Database - NADED Phycology Section, Patrick Center for Environmental Research Diatom Count Report
Water Body: Rock Creek Site Location ID: IH97SWIROC39 Sample Label: 97SWIROC39 Sample ID: IH020779 Client Sample ID: 41097-2705 Date Sample Collected: 09/24/1997 Count Finished: 06/23/1998 Subsample ID: DT1 Slide Replicate ID: a Count Replicate ID: 1 Counted By: Lara Panayotoff Sample Type: HC
Naded Taxon Name Percent Count Notes 2015 Achnanthes lanceolata (Brébisson ex Kützing) Grunow 1.00 8.0 2096 Achnanthes lewisiana Patrick 0.12 1.0 2030 Achnanthes minutissima Kützing 5.37 43.0 16003 Cocconeis placentula var. lineata (Ehrenberg) Van Heurck 0.62 5.0 23089 Cymbella cymbiformis Agardh 0.12 1.0 23015 Cymbella minuta var. silesiaca (Bleisch ex Rabenhorst) Reimer 0.12 1.0 23051 Cymbella sinuata Gregory 0.25 2.0 34030 Fragilaria vaucheriae (Kützing) Petersen 0.50 4.0 36003 Gomphoneis herculeana (Ehrenberg) Cleve 0.12 1.0 36004 Gomphoneis herculeanum var. robusta (Grunow) Cleve 0.12 1.0 37098 Gomphonema intricatum var. pumila Grunow ex Van Heurck 35.37 283.0 37075 Gomphonema olivaceoides var. hutchinsoniana Patrick 1.12 9.0 37080 Gomphonema rhombicum Fricke in Schmidt et al. 14.75 118.0 37029 Gomphonema subclavatum (Grunow in Van Heurck) Grunow 36.00 288.0 37031 Gomphonema ventricosum Gregory 0.12 1.0 39001 Hannaea arcus (Ehrenberg) Patrick in Patrick and Reimer 0.37 3.0 46572 Navicula cf. lundii Reichardt 0.37 3.0 46170 Navicula cryptocephala var. veneta (Kützing) Rabenhorst 0.12 1.0 46523 Navicula ignota var. acceptata (Hustedt) Lange-Bertalot 0.25 2.0 46058 Navicula radiosa var. tenella (Brébisson ex Kützing) Grunow 0.25 2.0 46395 Navicula secreta var. apiculata Patrick 0.12 1.0 46084 Navicula tridentula Krasske 0.12 1.0 48004 Nitzschia amphibia Grunow 0.12 1.0 48297 Nitzschia cf. acidoclinata Lange-Bertalot 0.12 1.0 48296 Nitzschia cf. archibaldii CODY Lange-Bertalot 0.12 1.0 48008 Nitzschia dissipata (Kützing) Grunow 1.00 8.0 48017 Nitzschia hantzschiana Rabenhorst in Grunow 0.12 1.0 48122 Nitzschia inconspicua Grunow 0.62 5.0 48023 Nitzschia linearis (Agardh) Smith 0.12 1.0 48165 Nitzschia paleacea Grunow in Van Heurck 0.12 1.0 57001 Rhoicosphenia curvata (Kützing) Grunow ex Rabenhorst 0.12 1.0 66024 Synedra ulna (Nitzsch) Ehrenberg 0.12 1.0
Report Date: 6/24/2022 Total Number of Taxa: 32 Total Number Counted: 800
Count Notes:
? Comments: start 105.5 x 20.3
2nd row 105.1 x 20.9
end 105.1 x 15.1
G. subclavatum/G intricatum v. pumilum: not able to distinguish between GVs of these two taxa. Counted total GVs and split based on relative abundance of the two.
Taxa Notes:
None.
Counts version 3.3 - last revision 2/16/2021 If problems with this page, please email