task #6173
Updated by Andreas Kohlbecker almost 6 years ago
A taxonomic classification is required for the algae registry for grouping taxa logically and semantically.
The main use case: "*A user wants to find the latest registrations in a specific taxon group.*"
These groups often are not equal to the commonly used higher classification. E.g. It would be scientifically correct to use the phylum *Heterokontophyta*, whereas for practicals means it would be beneficial to use the classes *Xanthophyceae* or *Bacillariophyceae* which are included into the former phylum. Also under discussion is the option to use vernacular higher classification names.
The algae registry actually has no need for a real classification except for the purpose of making it easier to find names. The complete reference classification will be provided by the name index which is a separate cdm instance. The classification for a given name will be retrieved from the index by sending a query to REST service.
These considerations lead to the following draft concept:
## 1) Higher classification with concept relations
We will have one classification to which the taxa belong to. Each taxon will be added to this classification. In the beginning this classification will only consist of the highest ranklevel (phylum, class).
All lower ranked taxa will only be added as needed see 2) and 2) below.
~~~
Classification A
Heterokontophyta <---+---+---+
| | |
| | |
Classification B | | |
| | |
Brown algea +-------+ | |
part of | |
Gold algea +-----------+ |
|
|
Classification C |
|
Phaeophyceae +---------------+
classified within
~~~
## 2) New registration of suprageneric taxa
suprageneric taxa are added to the classification when a registration for the according name is created:
a. Firstly by the author
b. secondly by the data curation
## 3) Species or infra generic taxa
These taxa are added to the genus (automatically on base of the uninomial). In case the genus is not yet in the system it will be creates as post registration in progress. The data curation will then validate this new name.
## 4) Higher taxonomy as published
The publications also provide a higher taxonomy for the new names. I makes no sense to create a new separate classification for each case. It is sufficient and much more elegant to add theses taxa as `TaxonInteractions` to the newly registered name. The label for this feature type could be "*Classification as published*"
## 5)
 
