Joanna has been working on and in rivers, lochs and lakes for over 25 years, in England, Italy, Scotland and Norway. She has an excellent knowledge of freshwater ecology and taxonomy, with the ability to collect and identify freshwater invertebrates, benthic algae and diatoms. After finding a new, non-native invertebrate species (Proasellus meridianus) in the Glomma, she has also been drawn into the field of "invasive" species and produced a photographic identification guide to the species of Asellidae now found in Norway. Her research has focused on the habitats of macroinvertebrates and the influence of river morphology and hydraulics on these habitats. She has used this expertise has been used to design river restoration works. She has extensive fieldwork experience, with many months spent travelling all over Norway for benthic algae surveys and invertebrate sampling over the past few years. As well as research, she conducts environmental monitoring, pollution investigations and reporting. Her experience also includes ornithology, aquatic plant survey, water policy and science communication and teaching (both lecturing and giving training in benthic invertebrate identification.