In the last decade, advances in a variety of fields ranging from molecular biology and genomics, to statistics and phylogenetic reconstruction methods, to environmental surveys and the description of new species, have in combination led to a significant improvement of our understanding of protist diversity and evolution. To recognize these advances, and to establish a flexible resource to concentrate and distribute our knowledge about the biology and diversity of microbial eukaryotes in the context of the phylogenetic relationships among protists, a group of protistologists began to organize a massive update of the “protist” sections of the Tree of Life Web Project.
The goal was to achieve this in a single, substantial push in the summer of 2008, facilitated by a workshop. Members of the protist research community were chosen to update various branches of the Tree of Life Web Project, and contributors gathered in Halifax on the eve of the combined meeting of the International Society for Evolutionary Protistology and International Society of Protistologists, and presented an overview of each group. The workshop served as the focal point for the individual efforts to update the Tree of Life, but also presented a unique opportunity for a ‘crash course’ in eukaryotic biodiversity of a type never offered before. Experts of all major protozoan and algal groups were on hand and presented their summary of the basic biology, structure, molecular biology, and phylogenetics of their group. For anyone interested in brushing up on the state-of-the-art-outside the groups they know best, or for people relatively new to the field and wanting a ‘protist-emersion’ experience, this workshop offered a unique opportunity. The topics the contributors were asked to cover were not restricted to the systematics and phylogeny of a group; speakers were encouraged to provide a more comprehensive summary about the biology of each group and what makes them interesting.
Several of the branch pages developed in the context of these efforts are now available on the Tree of Life Web Project and additional pages will be published over the next few years. Here is an overview of the workshop presentations with links to those pages that have already been published.
Here are some other pages that were developed as a result of the workshop but that were not covered in the workshop: Alveolates, Heterolobosea, Stephanopogon.


Participants in the Tree of Life Web Project Protist Diversity Workshop, Halifax, Nova Scotia, Canada, 19-20 July 2008. © 2008 Kevin Carpenter