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Phytoplankton Data Analysis
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How to record "no algae found" #3

Closed mjpdenver closed 10 years ago

mjpdenver commented 10 years ago

In the workbook "drew/ f/31tab Fall HAB Data EFR20121031,SRR20121107,TAR20121106 alg.xls" on sheet 2SRR20025

there are samples for which "No cyanobacteria observed".

How should this be coded? Before assigning a zero to any genus or species, this may raise a larger question - what was being searched for? Implied in any analysis is that if something is not reported - to interpret the result as zero - that something needs to have been sought.

Make sense?

jbeaulie commented 10 years ago

In these instances we would record the Taxa as NA, the Class as Blue-Green, the Cell.L as 0, and the BV.um3.L as 0. I see that no sample depth is recorded for these samples. I'm fairly certain that these samples were collected from the surface. We can assign a depth of '000'.

mjpdenver commented 10 years ago

Done.

jbeaulie commented 10 years ago

cleaned_algae_20140423.txt contains a few instances where the taxa is reported as "No cyanobacteria observed". The specific lakes and dates are : EFR 2014-01-14 EFR 2013-12-04 These should be reported as described above.

mjpdenver commented 10 years ago

Addressed with issue #33. This issue will also be checked in the algaeCheck.R script.