Dr. Pakhomov a biological oceanographer with a broad range of interests covering topics from species ecology, at the level from zooplankton to fish, to ecosystem structure as well as physical-biological and biochemical coupling. Most of his research has been done in the Southern Ocean. Recently, he has developed interests in stable isotope ecology, in particular in techniques that use compound specific measurements to reconstruct trophic pathways in pelagic ecosystems. During the past several years, he has also been involved in research studying variability and responses of marine ecosystems to climate change using stable isotopes, large-scale and retrospective analyses. His secondary research interests concentrate on projects studying the land-sea interface, particularly how land use and population density in catchments affect the stable isotope ecology of riverine, estuarine and coastal ecosystems.