In reference to the protozoan communities of extreme habitats, we have investigated flagellated protozoa in natural lagoons with high salt content as well as lagoons used for commercial production of the alga Dunaliella (used for beta-carotene production). The communities from these habitats have an impoverished composition and contain some organisms which are not widely reported.

• Al Qassab, S., Lee. W. J., Murray, S., Simpson, A. and Patterson, D. J. Flagellates from stromatolites and surrounding sediments in Shark Bay, Western Australia. Acta Protozoologica (in press)
• Simpson, A.G.B. and Patterson, D.J. (1996) Ultrastructure and identification of the predatory flagellate Colpodella pugnax Cienkowski (Apicomplexa) with a description of Colpodella turpis (n. sp.) and a review of the genus. Systematic Parasitology, 33:187-198.
• Patterson D.J. and Simpson, A.G.B. (1996) Heterotrophic flagellates from coastal marine and hypersaline sediments in Western Australia. European Journal of Protistology, 32: 423-448.