New class: photosynthetic photon flux density

[celineaubert]

Please add a class photosynthetic photon flux density has exact synonym PPFD definition Number of photons in the 400-700 nm range received by a surface for a specified amount of time; https://en.wikipedia.org/wiki/Photosynthetically_active_radiation I don't know under which class to add it. It is not really a density as defined by PATO.

[KrishnaTO]

@celineaubert pls confirm Root term photosynthetically active radiation was previously added.

UO has the exact unit as: microeinstein per square meter per second (Note that micromols == microeinstein) where synonym can be added and envo term can make it into a subclass?

[celineaubert]

This term is different from photosynthetically active radiation. PPFD is a measure of photosynthetically active radiation.

• PPFD could be added as a subclass of http://purl.obolibrary.org/obo/PATO_0001291 . It does not seems entirely correct, but this is the best class I have found.
• definition, synonym, def source are still correct
• term can be linked to the UO unit term - but should not created as a subclass of UO.

the term - ''photosynthetic photon flux'' could also be added as it is important in crop experiments: -subclass of: http://purl.obolibrary.org/obo/PATO_0001291 . It does not seems entirely correct, but this is the best class I have found.

• Exact syn: PPF
• def ''total number of photons in the 400-700 nm range released from a light source''
• source: https://www.waveformlighting.com/horticulture/what-is-the-difference-between-ppfd-and-ppf https://en.wikipedia.org/wiki/Photosynthetically_active_radiation

[celineaubert]

terms have been created: http://purl.obolibrary.org/obo/ENVO_06105204 and http://purl.obolibrary.org/obo/ENVO_06105213>