This project is a development of another URGENT Project on the River Thame - Modelling River Corridors: the scientific basis for rehabilitation of urban rivers (MRC) - addressing an additional boundary condition for river rehabilitation, the mobilisation and bio-availability of sediment-associated contaminants in relation to flow, water quality and channel structure. The project comprises three research tasks:
The primary scientific objective is to model the ecological risks associated with urban river sediments.
Measurement and modelling of sediment-associated contaminant fluxes
Field data obtained from selected reaches of the River Thame will be combined with laboratory data and data from other sources/monitoring programmes. The data will be used to obtain information on, sediment-water partitioning of contaminants, particle size and chemical speciation, particulate movement, timing of resuspension events and calculation of loads and fluxes.
Measurement and modelling of the role of biota on sediment-water chemical fluxes
Fluxes of the selected contaminates will be investigated on different sediment types in fluvaria and mesocosms. Studies will include the influence of burrowers and sediment surface grazers.
Development of a module to assess the ecological risk of urban river sediments
Data from tasks 1 and 2 will be integrated to provide an analysis of sediment associated pollutant dynamics.
October 1999 Three years
University of Birmingham
University of Coventry
Further information is available from the following contacts:
Lead Researcher: Professor Geoffrey Petts
Tel: 01214 145518, Fax: 01214 145528, email: firstname.lastname@example.org
URGENT Programme Manager: Graham Leeks
Tel: 01491 692203, Fax: 01491 692313, e-mail: email@example.com