Observations made by Swiss or foreign voluntary naturalists.  The non-stop relentless work of those impassioned represents a regular source of essential reliable recent information.

Observations collected within the framework of projects managed by the CSCF (for example red list projects) or projects with which it is associated (for example BDM-CH project). This information collected by the means of standardised methods and sampling protocols represents an increasing part of the annually collected data.

Information resulting from regional inventories authorised by the community (cantons, communes) and certain non-governmental organisations (Pro Natura, WWF) or private foundations (Study and management group of the Grande Cariçaie; Bolle of Magadino Foundation, Grangettes Foundation) implied in the conservation of species and their habitats.

Increasingly many are actually the public or private Swiss institutions that require from their agents that the information collected during the studies which they finance would have to be automatically transmitted to the CSCF. On the other hand the CSCF takes care of the scientific validation of the collected observations and provides all original information available which concerns them.

Information coming from databases managed by other institutions, such as KARCH, the CCO and the SSF. Regularly updated, it is deposited at the CSCF in order to ensure its safeguard, circulation (controlled) and used to its full potential within the framework of national syntheses. 

Museographic information gathered during projects managed by or associated with the CSCF. If a significant part of this information is acquired by the specialists with whom it collaborates or by its own (CSCF) forces, the part of which is provided by the managers of the collections themselves is in constant increase. 

Bibliographical information.  This potential source of information is exploited, with exception, only if reference collections were used by the authors of the publications concerned. Therefore it can only be used if the determination of the species mentioned can be validated by the examination of reference specimens.