Preface: Trait-based approaches in micro-algal ecology.

The text is a preface to a special issue of the journal Hydrobiologia, titled "Trait-Based Approaches in Micro-Algal Ecology." The preface provides an overview of the 19th workshop of the International Association of Phytoplankton Taxonomy and Ecology (IAP), which focused on trait-based approaches in micro-algal ecology. The workshop brought together scientists and students from various countries to discuss ecological topics and practice species identification. The preface also mentions the history of the IAP workshops and the special issue's dedication to Colin S. Reynolds, a prominent phytoplankton ecologist. The special issue includes a selection of review and research papers covering a wide range of spatial and temporal scales and aquatic habitats. The authors express gratitude to the referees, editorial staff, and workshop participants. [Extracted from the article]