What to do with 0 (organism absent) ?

npolar / marine-db

https://doi.org/10.21334/marine-db

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What to do with 0 (organism absent) ? #24

Closed cnrdh closed 5 years ago

cnrdh commented 5 years ago

A surprising high number, over 55000 occurrence records, contains 0 as count (organismQuantity).

Now, absence data may also be valuable, but absence is normally not recorded, ie. there is no consistent use of 0 for absent.

cnrdh commented 5 years ago

Some samples are not (always) counted, eg. MOSJ2017 handnet. Will check the gear distribution of those 55000 and report back here...

AnetteWold commented 5 years ago

For mesozooplankton we use a standard list => species included in this list that was not found are left blanc. I assume blanc is replaced with 0 for some datasets. Not sure what to do