World Data Center for Microorganisms:      

European Culture Collections' Organization:

Convention on Biological Diversity:

International Regulations for Packaging and Shipping of Microorganisms:

OECD Best Practice Guidelines on Biosecurity for BRCS:

The Mycetotheca of the Athens University:

International Phycological Society:

Phycological Society of America:

International Society for Diatom Research:

Federation of European Phycological Societies:

The Japanese Society of Diatomology:

International Association for Cyanobacteria Research (IAC):

The on-line database of cyanobacterial genera:

Association for the Sciences of Limnology and Oceanography:

Algaebase : Listing the World's Algae:

International Society for Applied Phycology:

Society for Industrial Microbiology and Biotechnology:

International Society for Environmental Biotechnology:

Hellenic Phycological Society:

Hellenic Botanical Society:

Hellenic Initiative Mikrobiokosmos:

Greek Society of Biological Sciences:

Hellenic Ecological Society:

Hellenic Society for the Protection of Nature: