Identification keys in the series lead the user through the identification criteria and are packed with notes on where the organism is likely to be found, and the ecological conditions it likes to inhabit. Among titles are identifying freshwater fish in Britain and Ireland, and books on identifying freshwater invertebrates and other organisms.
Analysis guides offer practical advice on sampling techniques for scientific research and monitoring of biodiversity in lakes and rivers. All books in the series are written by leading scientists or practitioners in freshwater biology and ecology.