The origins, nature and metabolic pathways controlling the impact of dissolved organic matter (DOM) on aquatic ecosystem and human health are poorly understood, undermining our ability to develop appropriate policy and planning to bring adverse effects under control. The DOMAINE project, funded by the Natural Environment Research Council (NERC) aims to assess the origins and rates of Dissolved Organic Carbon (DOC), Dissolved Organic Nitrogen (DON) and Dissolved Organic Phosphorus (DOP) flux to aquatic ecosystems from the surrounding landscape. Furthermore the DOMAINE project will investigate the dominant enzymatic pathways controlling nutrient processing and the rate of dissolved organic nutrient fraction uptake in support of algal, plant and microbial production in waters of differing character and asses the availability of DON and DOP to riverine phytoplankton, epilithon and macrophytes. This will be achieved through a series of field and lab based experimental studies. For further details please refer to the tabs above. Broadly the project objectives are to:
Define the character of DOC, DON and DOP pools instream as they vary in relation to source character.
Isolate the pathways by which DOC, DON and DOP move from terrestrial to aquatic systems.
Gain an insight into the ecosystem functional role of the individual nutrient fractions delivered from a range of catchment sources.