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

NEON00673 DT1 A, official count

count method: 600 Valves (300 Cells)
slide: NEON00673 DT1 A
    from subsample: NEON00673 DT1
        from sample: NEON00673

View results for COUNT EVENT MEASURED ATTRIBUTE(S): 1

   valves (cema_id: 202877 ma_id: 2)

count_event_id: 66781
taxonomy: ANSP-2011
person: Marco Cantonati ... person_id=796

started_on: 3/21/2017 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: Transect 1 (down): start x=90.0, y=17.0; end x=90.0, y=13.6 Transect 2 (up): start x=96.6, y=17.0; end x=96.6, y=19.3 Observations on individual taxa: - In the counts I kept separated the morphotype corresponding to Navicula minima Grunow in Van 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" = 5 valves Morphotype Navicula minima = 4 - 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 = 99 valves Achnanthidium exiguum var. constrictum DWARF = 3

Counts version 3.3 - last revision 2/16/2021
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