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Algae count event

Phycology Section: ecology and taxonomy of freshwater algae, particularly diatoms

 


Diatom Count Report
 
C O U N T E V E N T

NEON00669 DT1 A, official count
 
count method: 600 Valves (300 Cells)
slide: NEON00669 DT1 A
    from subsample: NEON00669 DT1
        from sample: NEON00669
 
View results for COUNT EVENT MEASURED ATTRIBUTE(S): 1

   valves (cema_id: 202895 ma_id: 2)

count_event_id: 66799
taxonomy: ANSP-2011
person: Marco Cantonati ... person_id=796
 
started_on: 4/8/2017 12:00:00 AM
estimated_hours: 4.000000000
microscope_optivar_lens_id: 87
source_table: dtm
institution_address_id: 1
 
added on: 4/24/2017 5:33:00 PM, added by: pboylan
modified on: 4/24/2017 5:33:00 PM, modified by: pboylan
 
1 QUALIFIER:

  Qualifier Code: TaxaNote
  Description: Notes taken about the taxa for a count; older data typically includes information such as beginning and end scan coordinates, unusual taxa, etc.
  Comments: Sparse sample. Followed the VERY-SPARSE SAMPLES COUNTS procedure (6 12-mm transects): Transect 1: start x=90.0, y=18.0; end x=90.0, y=5.0 59 valves Transect 2: start x=91.0, y=18.0; end x=91.0, y=6.0 130 valves Transect 3: start x=92.0, y=18.0; end x=92.0, y=6.0 215 valves Transect 4: start x=93.0, y=18.0; end x=93.0, y=6.0 283 valves Transect 5: start x=94.0, y=18.0; end x=94.0, y=6.0 358 valves Transect 6: start x=95.0, y=18.0; end x=95.0, y=5.0 438 valves Observations on individual taxa: - In the counts I kept separated the morphotype corresponding to Navicula minima Grunow in Vaan Heurck (Figs 128-142 in Wetzel et al. 2015) from "typical" Sellaphora saugerresii (e.g., Figs 112-127 in Wetzel et al. 2015). In this count: Sellaphora saugerresii "typical" = 17 valves Morphotype Navicula minima = 6 - In the counts I kept separated dwarf forms of Achnanthidium exiguum var. constrictum. These differ by small size, subrostrate ends, and extremely weak constriction, and might represent a separate taxon. In this count: Achnanthidium exiguum var. constrictum = 31 valves Achnanthidium exiguum var. constrictum DWARF = 6 - In the counts I kept separated typical specimens of Nitzschia palea from a short, subcapitate morphotype. In this count: Nitzschia palea SHORT SUBCAPITATE = 1 valves Nitzschia palea = 0
 

 


 
Counts version 3.2 - last revision 6/17/2017
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