Environment Bill — House of Lords, 2021-06-23
Topic: Environment
John Krebs (Crossbench, Unknown): My Lords, I wish to speak in support of the amendment, Amendment 17, in the name of the noble Lord, Lord Lucas. As he explained, it aims to ensure that the Government commission the relevant research so that they understand what they are doing when they aim to meet environmental targets If we take biodiversity targets as an example, it is one thing to set a target of halting the reduction in biodiversity but it is quite another to figure out how to achieve the target. The noble Earl, Lord Caithness, entertained us a few minutes ago with stories of lapwings and curlews, and the research carried out by what used to be called the Game Conservancy Trust but, I believe, now operates under a different name. If noble Lords will forgive me for a short digression, I will complement the noble Earl’s story about lapwings and curlews with the narrative of the large blue butterfly That butterfly was extinct in this country by 1979, despite over 50 years of effort to halt its decline. Today it thrives in 33 different sites in south-west England. This is one of the classic cases of how restoring a species and increasing its abundance depended on detailed research. The secrets of success lay in the complex life history of this species, the caterpillars of which are taken into ants’ nests and tended and protected by a particular species of red ant, called Myrmica sabuleti. In return, the caterpillars secrete a nutritious liquid for the ants to feed on—an example of a mutualistic relationship. Professor Jeremy Thomas, then at the Centre for Ecology and Hydrology, discovered that the ant species is sensitive to temperature, which, in turn, depends on the length of the grass in the ants’ habitats. Changes in agricultural practice, combined with the decline in rabbit populations due to myxomatosis, had resulted in a small increase in grass length sufficient to cause the ants to disappear and, hence, the butterflies to die out. As a result of his research, slight changes in agricultural practice allowed us to maintain the grass at the right height and successfully restore butterfly populations. Unfortunately, that conservation success story is the exception rather than the rule. As Professor Bill Sutherland of Cambridge University has documented, many, if not most, government-led initiatives to enhance biodiversity and restore nature have failed because they were based on hunch rather than proper scientific evidence. This includes the CAP Pillar 2 environment schemes. I know that from my own experience. My research group at Oxford was funded by the Ministry of Agriculture, as it was in those days, for many years to work out how to alter arable farming practice to support winter populations of farmland bird species. Although we discovered simple and effective remedies, they were never implemented Therefore, the noble Lord, Lord Lucas, is absolutely right to emphasise the importance of evidence on which to base the targets. However, in closing, my question for the Minister is: who will commission and pay for the necessary research to underpin the ambitions of the Bill and ensure that we do not blunder blindly, as we have done all too often in the past? The major research funding body in this country is UK Research and Innovation, whose website I checked this morning. Although the environment is one of eight priority themes, if one looks within that theme, no mention is made of biodiversity, habitats or conservation. Furthermore, UKRI is facing a £539 million cut in its funding this coming year, which will mean that all its research programmes are likely to be reduced. If not UKRI, who is going to fund the research that we will need if the Bill is to achieve its high ambitions?