roy-lowry
commented
2 years ago Hi Gwen,
That example code was actually set up for boxcore data where the odd small fish turned up in the sediment sample as well as invertebrates. Just be careful with your proposed action that you don't end up replacing 'Abundance per unit area of the bed' codes with 'Abundance per unit volume of the water body' codes.
Cheers, Roy.
I have now retired but will continue to be active through an Emeritus Fellowship using this e-mail address.
From: Gwen Moncoiffé @.> Sent: 11 August 2021 10:34 To: nvs-vocabs/P01 @.> Cc: Subscribed @.***> Subject: [nvs-vocabs/P01] Correction of fish abundance parameters with inappropriate methodology (#86)
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Some P01 codes for fish abundance records have been created with an inappropriate methodology (see e.g. http://vocab.nerc.ac.uk/collection/P01/current/ZBN01459/). As well as incongruity, this has also resulted in duplicate records, some with a methodology and some without. It is likely that these terms were added as part of a bulk request that had a mix of zooplankton and fish counts. Because the methodology here is not essential in understanding what the measurement is (information about the sampling gear would be more valuable in this case than the analytical tool), I am proposing to review the P01 parameters mapped to P02=' FATX' (Fish abundance in water bodies) and :
- deprecate the duplicate records that have methodology specified and link them to the non-method specific records; and
- set the methodology to "not specified" for all other P01 records in this group if the biological entity is just a species name (i.e. all other biological attributes are set to "not specified").
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gwemon
Some P01 codes for fish abundance records have been created with an incongruous methodology (see e.g. http://vocab.nerc.ac.uk/collection/P01/current/ZBN01459/). This seems to have also resulted in duplicate records, some with a methodology and some without. It is likely that these terms were added as part of bulk requests that had a mix of zooplankton or zoobenthos and fish counts. Because the methodology as stated here is not particularly helpful in understanding what the measurement is (information about the sampling gear is more valuable in this case than the analytical method and this would be expected to be included in the metadata record), I am proposing to review the P01 parameters mapped to P02=' FATX' (Fish abundance in water bodies), and : 1) deprecate any duplicate records that have methodology specified and redirect them to the codes that do not specify the method; and 2) review whther it would be appropriate to set the methodology to "not specified" for all other P01 records in this group if the biological entity is just a species name (i.e. all other biological attributes are set to "not specified").
Note that codes associated with SAMP_PREP (S03) term='sieving and picking under an optical microscope' are abundance per unit area of the bed, while codes for associated with ANALYSIS (S04) term='optical microscopy' are abundance per unit volume of the water body.