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

GS141412 DT1 A, official count

count method: 600 Valves (300 Cells)
slide: GS141412 DT1 A
    from subsample: GS141412 DT1
        from sample: GS141412

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

   valves (cema_id: 89315 ma_id: 2)

count_event_id: 24393
taxonomy: ANS
person: Diane Winter ansp ... person_id=210

started_on: 2/23/2005 12:00:00 AM
finished_on: 2/23/2005 12:00:00 AM
estimated_hours: 0.000000000
microscope_optivar_lens_id: 163
scan_length_mm: 0.000000000
source_data_form: NA
source_table: dtm source_table_id: 15019
institution_address_id: 77

added on: 10/26/2005 6:07:00 PM, added by: dbo
modified on: 1/5/2010 3:44:00 PM, modified by: dbo

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: Row 1 x-140.0, y-22.9; y-17.5. Of the 29 P. frequentissimums counted, about 22 were somewhat shaped like apiculata, but the size of frequentisimum. So I left them in that category. They also did not have the wide central sternum that is shown for apiculatum. I am including some pictures of each for your perusal. I have also included a few pictures of a rostrate form of S. pupula (like the no. 12 in the KLB book 1). At least half the pupulas were like this. I apologize for the image quality, the sample is VERY sandy.

Counts version 3.3 - last revision 2/16/2021
If problems with this page, please email