My Lords, I am particularly grateful for the noble Lord’s amendment because it gives me the opportunity to expand further on how our definition of MSY relates to the fisheries objectives, in particular the precautionary objective, and to our ecosystem approach to fisheries management. I found it immensely rewarding to have early conversations with the noble Lord, Lord Krebs, and fisheries scientists to explore these matters. I am most grateful to the noble Lord and the scientists for their consideration and time in these helpful discussions.
Under the common fisheries policy, fisheries management has largely focused on the management of individual stocks. Clearly fish stocks interact, however, and fisheries activity also has wider impacts on the marine environment. That is why in our 2018 White Paper we committed to moving towards a more holistic ecosystem approach to fisheries management. This approach is supported by emerging best practice in fisheries science. For example—I emphasise this to my noble friend Lady McIntosh—ICES, the international body that advises on fish stocks, now provides advice on sustainable range alongside the traditional point estimate for MSY. Rather than trying to fish all stocks simultaneously at the point of MSY, setting harvest rates within a sustainable range provides flexibility when dealing with the complex interactions in mixed fisheries.
I say to my noble friend Lady McIntosh that we will be continuing to work with ICES, which, as I say, is an international body of great reputation. For instance, when scientifically justified, the provisions in the Bill would already allow us to underexploit some stocks marginally in the short term in order to seek to ensure that all stocks can be fished sustainably. Given that MSY assessments can fluctuate significantly due to scientific uncertainty, it would also allow us to smooth out year-by-year changes in catch limits to help to stabilise progress towards MSY and provide the industry with greater certainty. Such an approach better reflects the future direction of UK fisheries policy.
I say directly to the noble Lord, Lord Krebs, and others, that, in future, fisheries management decisions for both single and mixed fisheries will be based on data-driven science and will include broader ecosystem considerations, including environmental change, together with improving the alignment of fisheries management with fisheries science. Our fisheries science specialists at Cefas are already developing cutting-edge mixed fisheries modelling for the North Sea, the Irish Sea
and the Celtic Sea to understand better the benefits of future fisheries catches when moving towards MSY and even to lower exploitation rates, and to reduce the risks of stock depletion.
I thank my noble and learned friend Lord Mackay; I have found that it is essential to hear an expert lawyer’s view. The current definition of MSY in the Bill includes references to theoretical MSY and is linked to the reproduction process of stocks because doing otherwise would in practice further restrict the definition and make it more difficult to follow. Giving other factors equal weight as part of the MSY definition in itself, as these amendments propose, could dilute the key criterion of maintaining the reproduction process of stocks.
The MSY definition as currently worded will instead permit us to set harvest rates within sustainable ranges. This provides the necessary flexibility to look at fish stocks collectively within the ecosystem. It enables us to balance complex biological and ecological interactions within our fisheries as we work to rebuild stocks while allowing a sustainable fishing industry. Our definition is compatible with the current ICES interpretation of MSY.
With that explanation of the wider elements of managing our complex mixed fisheries, as well as the commitment around the use of data-driven science to ground our fisheries management decisions, I very much hope that the noble Lord will feel able to withdraw his amendment.