§ Mr. MorganTo ask the Secretary of State for the Environment what discussions he has had with the chairman of the National Rivers Authority concerning the means of improving the biological control of filamentous algae of the cladophora family in British rivers, lakes and reservoirs.
§ Mr. BaldryNone. However, I understand that cladophora growth occurs from time to time when nutrient concentrations, flow and organic conditions are suitable. The National Rivers Authority will be addressing its possible control as part of its wider research into eutrophication.