Pollinators and Pesticides

Joan Ruddock Excerpts

Thursday 6th June 2013 Commons Chamber

[Joan Walley]

I am very pleased to see the Minister nodding. I refer him to our recommendation 13: “Defra must”—I stress “must”—

“introduce a national monitoring programme to generate and monitor population data on a broad range of wild insect pollinator species to inform policy making.”

We felt that that is the bottom line and the starting point of what now needs to be done. As we went through our deliberations and came to reach our decisions, we endeavoured to find as much common ground among members of the Committee as we could before we turned to the issue of neonicotinoids.

Let me move on to the question of why insect populations might be declining. I want to make it clear at the outset that the health of insect pollinators is defined by a range of factors, including not only pesticides but urbanisation, loss of habitat, agricultural intensification and climate change; obviously, weather patterns affect things as well.

[Dame Joan Ruddock (Lewisham, Deptford) (Lab)]

My hon. Friend will know that the Government intend to issue—shortly, I believe—planning guidance on biodiversity. Does she agree that councils need to be encouraged and given the impetus to protect and restore bee-friendly habitats in their own neighbourhoods, which would make a real contribution to addressing the point she is making?

[Joan Walley]

I thank my right hon. Friend; she makes exactly the right point, and I absolutely agree. We need safe havens for wildlife, especially in urban areas, although it is not just about urban areas. The planning system underpins the whole issue of our natural capital and biodiversity. If we do not have guidance on how we protect and enhance our natural environment, the bees do not stand a chance.

Throughout our inquiry, the Environmental Audit Committee acknowledged the importance of sustaining agricultural yields, controlling pests effectively and maintaining food security. Indeed, those concerns were reflected in our final report. Equally, we were mindful of the value of insect pollinators as an ecosystem service to UK agriculture. I think that Members will be aware of the various estimates of the agricultural value of insect pollination, ranging from £500 million to £1.9 billion, depending on whether one takes into account the cost of replacement hand pollination. We felt that those issues ought to be given a value and taken into account.

In case anyone thinks that our report is just about a moratorium on certain neonicotinoids, I hope they will have a chance to read it in full and make themselves aware of the cross-cutting nature of our work and the importance that we give to using the common agricultural policy control to help British farming move as quickly as possible to integrated pest management.

As I have said, the Committee considered a range of factors that affect insect pollinators, but we were driven to scrutinise the effects of one family of insecticides—neonicotinoids—by the weight of peer-reviewed scientific evidence. For Members who are not familiar with neonicotinoids, I should say that they are a class of insecticide derived from nicotine. Following their introduction in the mid-’90s, they have been widely used in the UK on oilseed rape, cereals, maize, sugar beet and crops grown in glass houses. The body of evidence indicating that neonicotinoids cause acute harm to bees grew appreciably in the course of our inquiry, as new studies were published in heavyweight journals such as Science and Nature. In this case, harm to bees includes increased susceptibility to disease and reduced foraging and reproduction. If Members are interested in the particular scientific studies, I refer them to the Henry, Whitehorn and Gill experiments.

We heard that 94% of published peer-reviewed experiments on the effects of neonicotinoids on bees found evidence of acute harm. The Department for Environment, Food and Rural Affairs and the agri-chemical industry argued throughout our inquiry that the dosage used in those laboratory experiments was too high. In response it is worth pointing out that those studies used dosages derived from the best available data on the concentrations of neonicotinoids that bees encounter in the field.

The agri-chemical industry also likes to cite its own tests as proof that neonicotinoids cannot harm bees. However, the industry studies by which neonicotinoids were licensed for use in the European Union were not peer reviewed and are not open to scrutiny due to the supposed commercial sensitivity of the data. Furthermore, we found evidence in relation to the licensing of imidacloprid which calls into question altogether the rigour of the testing regime.

Against that background, we went on to consider the precautionary principle. By definition, insecticides kill insects. The precautionary question is whether neonicotinoid insecticides have an unsustainable impact on insect pollinators. The 1992 United Nations Rio declaration on environment and development states:

“Where there are threats of serious and irreversible damage, lack of full scientific certainty shall not be used as a reason for postponing cost-effective measures to prevent environmental degradation.”

That internationally agreed definition of the precautionary principle was later enshrined in the Lisbon treaty and it underpins much of the work that has been done on sustainable development, including when the work of the Rio conference was built on at Rio+20 only last year in Brazil.

Throughout our inquiry, DEFRA used what it identified as a lack of full scientific certainty as an excuse for inaction. For example, at one stage the Department stated that it would require unequivocal evidence of harm before acting on neonicotinoids.

--- Later in debate ---

[Neil Carmichael (Stroud) (Con)]

It is a pleasure to speak in the debate, not least because I am a member of the Environmental Audit Committee. I thank our Chair for the excellent leadership she has provided with this report and others. She is right on the importance of establishing a broad agreement, which the Committee did in its report—we have always achieved such agreement in previous reports, too. That is a good illustration of the Committee’s effectiveness, which I hope will continue, because we will do important work on investment in the green economy, which will result in a thought-provoking and important report.

I am a former farmer, so I am familiar with the pesticides argument. I was principally a livestock farmer, but I could not escape other types of farming. I fully support the report’s recommendations. It is important that we recognise that bees are essential to our environment and to successful farming. That is well illustrated by my constituency—Stroud is recognised as world bee place. We have done a huge amount of work to promote the protection of bees, including wild bees, which are also at risk. I am extraordinarily proud of my constituency’s bee protection reputation.

It is important to recognise that there are more threats to bees than pesticides. We have heard about bee starvation and bee diseases such as varroa—I hope I pronounced that correctly; as a Northumbrian, I sometimes get my vowels slightly mixed up. We also know of a variety of other threats to bees. We should recognise that the Government see the problem and are taking action with the bee protection plan. I hope the Minister outlines how extensive that plan is, because we need to demonstrate that the coalition Government are determined to protect bees.

It was disappointing that the UK did not vote in favour of the moratorium on neonicotinoids, but the moratorium is in place. As our Committee Chair correctly noted, that reflects the concerns and interest the Committee has spelt out. We had a lengthy debate on the seeds supply chain, and recognised that, for any moratorium to be effective, it would have to start later than we envisaged, which is right. It is good that Europe noticed that as well. The changes our Chair outlined are extremely welcome. It is good that the Government, through the field studies we have heard about, are determined to recognise the importance of the impact of neonicotinoids.

Transparency is critical. As my hon. Friend the Member for Totnes (Dr Wollaston) noted, there are too many occasions when one wonders how much we really know about what is being discovered or being hidden, so this matter would benefit from true transparency. I urge the Minister and the Department to consider the transparency of field studies, so that we know exactly what is going on and what the tests reveal. As the Chair noted, maize in Italy did not really suffer as a result of neonicotinoids being banned, but that is just one example. Everybody would benefit from more study and a more comprehensive understanding, including pesticide manufacturers. One problem that has to be borne in mind is that banning one type of pesticide might mean that other pesticides are used in an uncontrolled way. We have to monitor the use of all pesticides, especially when withdrawing neonicotinoids, as using different pesticides might make matters considerably worse. I am sure the Government are minded to do that.

On the wider question of the common agricultural policy and overall farm management, as we move towards a reformed CAP it is important to recognise good work, such as that done by the Environmental Stewardship scheme. I would like to see more farmers using such schemes, and for those schemes to become more tailored towards the kind of issue we are debating today.

[Dame Joan Ruddock]

The hon. Gentleman speaks about further reform of the CAP. I am sure he is aware that recent reforms to the CAP have given national Governments discretion to switch subsidies to agri-environment schemes, which could bring in much more bee-friendly habitats. Does he agree that the Government ought to be taking that step, rather than going on so much about what might be done in the future? Let us use what we have got now.

[Neil Carmichael]

The Government are a Government of positive action. We are a coalition Government. We benefit enormously from having Conservatives on one side and Liberal Democrats on the other, and I am certain that that combination will bring about exactly what the right hon. Lady says.

The right hon. Lady raises an interesting point about what amounts to the devolution of the CAP. From its inception, its impact has been characterised by either dominant nation states promoting certain types of produce, or, as in this case, by policy filtration, with different levels of government influencing outcomes by changing the nature of the policy. That was particularly prevalent in the early days in certain Mediterranean countries with regard to olives and so on. We should recognise devolution, but it is a double-edged sword. We in this country are able to do the right thing, but can we always guarantee that that will be the case in other countries that might have other priorities? I welcome those changes in the CAP, but urge the Government to do as the hon. Lady suggests. Indeed, I would go further and argue that we need to amplify the CAP’s impact environmental protection. It needs to be understood more clearly by the wider public. If people understood its more positive implications and outcomes, we could generate greater support for the CAP.

To sum up, I think it is right to have the moratorium on neonicotinoids and that it was postponed to allow the supply chain to adjust. It is necessary, however, to maintain a weather eye on neonicotinoids, so I welcome the Government’s commitment to field studies. It is important that they be conducted transparently and that their outcomes be made transparent. It is also important to recognise the value of good management and the impact that the reformed CAP can have. I would like more farmers encouraged down that path. In broad terms, we should celebrate the fact that many organisations—including those in my constituency I mentioned—are doing a lot of good work for the protection of bees. We should be supporting and welcoming those local solutions. Gardeners, too, have a responsibility, because in the past they have used neonicotinoids. It is important to recognise that all of us—I indulge in a spot of gardening myself, though I do not use neonicotinoids —should promote good practice wherever it is necessary, and it is necessary in our gardens, as well as on our farms.

[Martin Caton (Gower) (Lab)]

It is a pleasure to follow the hon. Member for Stroud (Neil Carmichael), who is a fellow member of the Environmental Audit Committee, and I join him in paying tribute to the leadership of our Committee Chair, not only on this vital inquiry, but on all our inquiries.

I strongly support all the conclusions and recommendations in our report, but my interest in what is happening to our pollinating insects goes back quite a bit further than last November, when we started taking evidence. In fact, it probably dates back more than 40 years to when I was at agricultural school and undertook a course in apiculture. The certificate I secured at the end remains a treasured possession. More recently, about three years ago, that interest was further spurred by a 2009 report produced by the organisation Buglife, which our Chair has already mentioned, and the Soil Association. It was a review of the scientific literature on a group of systemic pesticides called neonicotinoids on non-target insect species.

Although the combined evidence in the report was not conclusive, even at that time it rang serious alarm bells that should have received an urgent response from the Government. I secured a Westminster Hall debate on the subject, which a surprising number of Members from across the House attended to express their shared concern about the potential threat posed by these pesticides to a vital group of invertebrates—pollinating insects. Since that debate, thanks to intelligence supplied by Buglife and other environmental organisations, I have tried to keep track of further research and, when significant, have drawn it to the House’s attention through early-day motions and other parliamentary means.

As our Chair said, last autumn, the Committee decided to conduct what has turned out to be a major inquiry taking evidence from the organisations she mentioned. The first thing the Committee had to recognise was that many of our pollinating species appeared to have been in decline for some time. Of course, when we look at pollinators—especially any threats to them—the first focus is usually honey bees. That has been particularly the case in Europe and the USA in recent years, with alarming reports of what is sometimes called colony collapse on an international basis.

As a result of their economic significance, honey bees attract far more scientific attention than any other pollinator. Their decline has been ascribed to a range of causes—pests and diseases, such as the varroa mite, which has been mentioned, along with weather conditions, poor nutrition, poor husbandry, urbanisation, agricultural intensification, habitat degradation and the use and misuse of pesticides. However, honey bees are not the main pollinators in the UK—far from it. Ninety per cent of insect pollination is done by the thousands of other, wild pollinators—other bees, hoverflies, butterflies, carrion flies, beetles, midges, moths, and so on. These other pollinators are not monitored or studied like honey bees, so we do not know exactly what is happening to them. However, we received disquieting evidence from some witnesses of how, as the Chair has said, two thirds of wild pollinator species are declining, including moths, butterflies, hoverflies and bumble bees. We were told that of the 25 UK bumble bee species, two or three—no one is sure because the research has not been done—have already become extinct, while probably 10 others have suffered large range decline.

We were advised that DEFRA has a bee unit that does a good job of monitoring honey bees. There are 70 Government scientists dedicated to researching honey bees, but just part of one scientist looking at the health of wild bees. That has to change. We cannot afford to remain ignorant about our wild pollinators. That is why we call in the report for DEFRA to introduce a national monitoring programme to generate and monitor population data on a broad range of wild insect pollinator species. If we do not really know what is going on, we cannot make the right policy decisions to halt decline.

Most people looking at pollinator decline would come to the conclusion that, at least in most cases, multiple factors are at play—those that I have listed for honey bees and perhaps others. Most of our witnesses who addressed the wider picture accepted that there were probably a range of causes. However, the representatives of mainstream farming and especially the agrichemical industry were absolutely adamant that the decline had nothing to do with pesticide use and especially not the use of neonics. Our Chair has described how neonicotinoids work, which I will not repeat, but I will add that they are systemic, which means that they get into every part of the plants that are treated with them. Pollinating insects absorb them and carry them back to their nests or hives, even though they are not the target species.

[Dame Joan Ruddock]

My hon. Friend is making some interesting points. Does he think, as I do, that the Government perhaps need to rewrite their national pesticides action plan? There are methods other than the use of chemicals. They ought to be encouraged so that farmers and horticulturalists do whatever they can to reduce the chemical pressure on the environment and the pollinators.