Mr. Brian Beckett:

I thank the Deputy. As time goes on we are seeing a new layer on top of the standard fish kill scenarios. If there is deteriorated water quality and, on top of that, very high temperatures or sustained low flows in rivers, there are more fish kills. In recent years we have had to put large numbers of fish kills down to this cause, which is a catch all. It relates to poorer conditions within rivers in general, with climate in combination with other factors. It is as though there is a tipping point. We are now closer to that tipping point on the basis of several factors, including water quality in some areas and things such as disease, which can happen as a result of warmer temperatures.