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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

NJ000089 DT1 L, official count
 
count method: 600 Valves (300 Cells)
slide: NJ000089 DT1 L
    from subsample: NJ000089 DT1
        from sample: NJ000089
 
View results for COUNT EVENT MEASURED ATTRIBUTE(S): 1

   valves (cema_id: 85797 ma_id: 2)

count_event_id: 20629
taxonomy: NAWQA 1997-Starts
person: Karin Ponader ... person_id=212
 
started_on: 6/4/2002 12:00:00 AM
finished_on: 6/5/2002 12:00:00 AM
estimated_hours: 4.000000000
microscope_optivar_lens_id: 87
scan_length_mm: 6.500000000
source_data_form: NA
source_table: dtm source_table_id: 11260
institution_address_id: 1
 
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: 95; y: 8-12.5 Notes: Very difficult to differenciate between small N. frustulum and N. inconspicua!!! Pics have been taken from this sample. Differences between small individuals of both species are: N. inconspicua: striae much denser and more straight,and pores barely visible. They alwasys have a central nodule! . Less fibulae, but fibulae are thicker, more squared!! In N. frustulum striae are less dense, pores more coarse (visible in LM) . Also striae are curved towards the tips at both ends , specially in the smaller specimens! Fibulae density seems higher, central nodule is or is not existant.
 

 


 
Counts version 3.2 - last revision 6/17/2017
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