Ceramium rubrum
was collected in the North Sea by the group of the
Alfred-Wegner-Institut (Prof. Klaus Lüning). All other
seaweeds were cultivated by the collaborating groups of
the EU project SEAPURA (Sylt: Stiftung AlfredWegner-Institut,
Prof. Klaus Lüning; Porto: Universidade
de Porto, Instituto Botanico, Dr. Isabel Sousa
Pinto; Faro: Universidade do Algarve, Centre of Marine
Sciences, Prof. Rui Santos; Gran Canaria: Universidad
de Las Palmas de Gran Canaria, Instituto de Algologia
Aplicada, Prof. Guillermo Garcia Reina). Falkenbergia
rufulanosa is the tetrasporangial phase of the species A.
armata. Because both generations of this species were
investigated separatedly, A. armata and F. rufulanosa
amounted separatedly. From Gracilaria cornea 3
variants were used. The Ulva rigida samples came
from 2 different locations. The fresh samples were
washed with seawater and fresh water to remove salts,
epiphytes, microorganisms and other suspended materials.
The clean algae were frozen and lyophilized. The
dry material was stored at −20 °C. Voucher specimens
are deposited in the Institute of Pharmacy, Department
of Pharmaceutical Biology, Ernst-Moritz-Arndt-University
Greifswald, Germany