Pollinators and Pesticides

Alan Whitehead Excerpts

Thursday 6th June 2013 Commons Chamber

[Dr Alan Whitehead (Southampton, Test) (Lab)]

It is true to say that very little of what is discussed in this Chamber is beyond dispute. Indeed, only on Tuesday, a scientific hypothesis that has been shown to be supported by 97% of scientists writing about it in a review of 12,000 papers—namely, anthropogenic global warming—was nevertheless merrily being debated by hon. Members as though that near certainty did not exist. Questions concerning what is happening to bees and pollinators, what the causes are and what role pesticides may or may not play in the problems that we have heard this afternoon are occurring with bee populations are far less certain than that. It is thus potentially a matter for a great deal of dispute.

I want to reflect on the related problem that we as legislators have in addressing those issues and deciding how best to take action on them. The Select Committee’s work on this issue was an exemplar of how to go about that when the members themselves are not experts. Interestingly, however, as we have heard, the Environmental Audit Committee has rather more experts on it than one might think in respect of those who hold a certificate in apiculture. Also, several members are active or former farmers who have a great deal of knowledge and information about how these things work in general. The Committee did not go about its business in any kind of sensationalist manner. It operated carefully, quietly and at some length, seeking a large range of thoughts, opinions and experts in order to shed some light on what is a very knotty problem.

The problem was well summed up in a book published recently by the Canadian author, Douglas Coupland. He posited as a starting point of his novel that bees had been declared extinct. Then, across America, five people were found who had been stung by bees, and they were all arrested and immediately investigated by scientists on the basis of that apparently counter-scientific fact relating to the continuous existence of bees. Douglas Coupland was, I think, a little unscientific in setting out a world in which there were no bees, without taking account of the large number of other pollinators that exist alongside bees.

We know from the evidence produced before the Select Committee that the problem is not just about honey bees; in fact it is not just about bees as it is about all the pollinators that operate in our environment in such a fundamentally important and basic way to ensure that our ecosystem continues in a recognisable way. If the sort of declines that the Committee heard about are to continue at the same rate over the same sort of period, not just several bumble bee species but large numbers of bumble bees will be extinct.

The Committee was told that 600 solitary bees can pollinate as well as two hives containing 30,000 honey bees, so it is not just about honey bees. As our Committee Chairman mentioned, they are a sentinel species, but it is nevertheless the case that hoverflies, butterflies and all sorts of other pollinators are in steep decline. We were told that 66% of larger moth species in the countryside are declining, as are most of the bumble bees—we were told that six species had declined by at least 80% in recent years. As we have heard, hoverflies are declining, and 71% of butterfly species are declining at an alarming rate. We do not have data on the vast majority of the other pollinators, and we have to take some of those sentinel species as indicators for those other species, but we certainly do know that something is beginning to go seriously wrong with the species that pollinate our crops, flowers and food.

So I do not think the Committee had a choice in the conclusions it might reasonably draw from the material presented to it, given that, as legislators, we have to make choices when we are not necessarily complete experts in a subject. We are responsible for what happens and we have to take the best shot we can in terms of getting the best evidence available to inform our judgments. The evidence that came before the Committee demonstrated clearly a strong relationship, not only where neonicotinoids were used, but, for example, where crops were routinely dusted. Farmers cannot purchase oilseed rape seeds in this country that have not been dusted. Whether or not they think there is a problem with their crops, they simply have to plant those crops, which have, systemic within them, the effect of the neonicotinoid with which they have been dusted.

The Committee heard about the various studies done by Henry, Whitehorn and Gill, which demonstrated a strong causal link between neonicotinoids and an effect on bees in a laboratory. We also heard about the continued difficulty in conducting adequate field trials. One person who contributed to our evidence suggested that getting scientific certainty from field trials would cost about £20 million and take 10 years, if that is what one wanted to do. So we cannot deal in absolute scientific certainty on these things and, in terms of decision making, nor should we. The conclusions that the Committee reached on what should be done about neonicotinoids are absolutely right, given what we, as legislators, are charged with doing. I continue to be a little dismayed about the extent to which it appears that this is not quite the route the Department for Environment, Food and Rural Affairs is taking in its representations on pesticides, pollinators and bees.

I welcome the notion that further, and, we hope, much less flawed, field trials will be carried out urgently, which can get further indicators to the fore. I also welcome the idea that we should try to ensure that integrated approaches are brought to the fore in the future management of pesticides. It has been implied—the Committee unanimously felt that this was not the case—that there are no alternatives to neonicotinoids if they are taken off the roster of usable pesticides for those plants. I hope that we can use different methods of pesticide management and ensure that the crops are well maintained, with advice and assistance from DEFRA, in a way that a number of people say is not possible to do.

We remain in a world in which there is an enormous amount that we do not know. I hope that DEFRA will monitor developments involving non-bee pollinators much more closely, will keep them well to the fore in the views that it expresses and the action that it decides to take, and will continue to look at the evidence that is being produced about elements that are thought to be having an impact on colony decline. I hope that its consideration will bring together such issues as varroa mite habitats, food availability, husbandry, and, indeed, climate change, in order to create a more complete picture of what is going on.

Let me emphasise again that we do not know the details of what is going on. We do not know what is the prime cause of decline. What we do know is that there is a decline, that it is very serious, and that we can do things about it. That is the essence of what the Committee is saying in the report. It does not seek to provide all the answers; it does not look for a silver bullet; but it does suggest that there is a strong case for taking action. I hope that DEFRA will take precisely the sort of action that we need, in order to ensure that our pollinators are healthier in the future and our ecosystem revives as a result.