Insect Population

I beg to move,

That this House has considered the reduced insect population.

It is a pleasure to serve under your chairship, Mr Davies. I am glad to see so many hon. Members present. I will give them plenty of time to intervene, but I hope that they will let me make a bit of progress first. I secured this important debate because the declining insect population is one of the lesser-known tragedies of the human effect on our environment. I wanted to call the debate “Insect Armageddon” or “Insectageddon”, but unfortunately I am little ahead of the House authorities on such matters. That is what we are experiencing, however, and we should be under no illusion about that. Insects are the canary in the coalmine of animal life on the planet: if insects go, all other species will follow.

If we are fighting a war against climate change—we should be under no illusion that we are experiencing a climate emergency—insects are on the frontline of the battlefield and humans are just another species in the war. We are the most intelligent soldiers fighting the war, however, and we cannot expect insects to know that their fields are being built on or that their farmer is using nitrates. We know that our actions are causing the disruption to their ecosystem.

I secured the debate due to the absolutely shocking evidence I heard in the Environmental Audit Committee evidence session on 12 February. I want to put on the record my thanks to Professor Georgina Mace, Dr Mark Mulligan, Professor Peter Cox and Matt Shardlow, who gave the evidence that inspired this debate. I also thank the National Trust, the Royal Society for the Protection & Birds, Friends of the Earth and Buglife, which have informed what I will say.

There is a massive depletion of insects, in relation to biomass and abundance. Some studies also show a loss of variety. Most people born by 1980 will perceive that, because 25 or 30 years ago, on a long summer car journey, the windscreen would be full of winged insects. That is now minimal. Why do we need abundance, biomass and a variety of insects to ensure a healthy planet? We need abundance and biomass to support the production of food and water, and to support nutrient cycles and oxygen production. We need variety because that ensures that if a single insect species becomes extinct, we will retain sufficient diversity. New varieties may be able to cope with climate change and other challenges that humans and the planet provide. Studies have most clearly documented the loss of abundance and biomass, which has mostly been caused by land use change for agriculture, the intensification of agriculture, and the application of pesticides, herbicides and novel chemicals in the environment.

I am delighted that my hon. Friend has secured the debate. Does he agree that one way to encourage greater insect populations is to have living streets, such as the one that we are talking about in Whitefriargate in Hull? That whole street will be turned into a living street full of plants and, hopefully, insects.

Absolutely. Urbanisation is a big challenge. If we do not create green corridors in our cities, insect biomass, variety and abundance will surely perish.

This is such an important issue. My hon. Friend talked about agriculture, and the growth of the agrochemicals industry is obviously a main cause. Does he agree that integrated pest management and a more agro-ecological approach to farming is the way we need to go if we are to protect our pollinators and other insects?

I pay tribute to my hon. Friend, who is an expert on the subject in this place. She is absolutely right. We and the Department for Environment, Food and Rural Affairs need to do more work on that.

I congratulate the hon. Gentleman on securing this hugely important debate on one of the biggest issues we face. The Agriculture Bill, which is going through the House, provides an opportunity to take some action on the issue. Will he join me in urging all hon. Members to support new clauses 10 and 11, which would begin to address it by limiting the application of pesticides in agriculture and beyond?

That is a timely intervention, because later I will certainly be looking at, and potentially signing, those two new clauses, which stand in the hon. Gentleman’s name.

I echo other hon. Members in saying how important the debate is and in congratulating the hon. Gentleman on securing it. He has indicated that the crisis we face is not happening by accident; it is being caused by policies that we can change. Does he therefore share my concern that the UK missed its deadline for submitting its sixth national report for the convention on biological diversity conference, which suggests that it is not terribly serious about it? The UK is also on track to miss 14 of the 19 targets in the convention, which suggests that the Government have a lot to do.

It is great that so many colleagues from the Environmental Audit Committee are present. These are exactly the issues that the Committee takes up with Ministers, and it is good that they are getting an airing in the debate. I absolutely agree with the hon. Lady.

I will move on to pollination. The biggest impact of the loss is that we will lose pollinators, and if we cannot sustain natural pollination, there will be a loss of crops. Our world is heading towards a population of 9 billion people. If that rising population is set against the impact of insect loss—let us not mince our words—it puts us on a road to cyclical starvation. We will lose the production of some crops, particularly those that are best for people’s health and wellbeing. Crops pollinated by insects are mainly fruit and vegetables; crops such as wheat and maize do not need insect pollinators, so they are not affected as much. It is fruit and vegetables—the fresh food that people need to be eating—that will be lost due to lack of pollination.

We will have to find a way to compensate for the loss of natural pollinators. We already have commercial honey bee colonies, which are produced especially to provide that pollination service, but even those could be affected.

The debate is incredibly timely. In Plymouth we have planted wildflower meadows and bee corridors across the city. They save money, because there is no need to cut back grass, and provide an essential habitat for pollinators, spiders and ground-based insects. Does my hon. Friend support that model being rolled out across the country?

Absolutely, and that is a brilliant segue into my next point about ecosystem services.

This is a crucial debate. Is my hon. Friend aware of the work of Professor Jane Hill, who has been mapping the northward progress of butterflies as the climate changes? They are such a sensitive indicator of the pace of climate change in our country.

I have seen Professor Hill’s work. She is a credit to this country. Our UK academic research community is brilliant, and the Government need to take more notice of its work.

On the point about pollinator corridors, I withdrew my private Member’s Bill on pollinators last year, because the Government agreed to fund Buglife and Matt Shardlow—the hon. Gentleman has mentioned them already—to complete their mapping of those corridors across the country, with a view to using the environment Bill to look at planning regulations to force local authorities to plan for them in new developments, which would be welcome. Does he agree that the charities already doing that work have a huge role to play, and that the Government should support them with funding to continue? There does not need to be a massive revolution in policy.

The hon. Gentleman will be unsurprised to hear that I absolutely agree, and I would like that to be legislated for in the environment Bill, particularly as he lost his piece of legislation on that proviso.

I will move on to ecosystem services. On top of the loss of invertebrates, the loss of species generally means that we do not have a lot of other services, such as natural pest control, natural decomposition of pollutants and natural nutrient cycling. Without those, we will increasingly have to intervene in ecosystems to provide them. A good example is that trees draw carbon down from the atmosphere really well, and have done forever, but because we have lost the part of the ecosystem that does that, we are now talking about engineering artificial means of carbon drawdown.

I am of an age to remember the windshield being covered in insects, and the number plate, which was particularly hard to clean. Does the hon. Gentleman think that initiatives such as the healthy bees plan and the National Bee Unit should be extended to protect other species of insects—or, as we say in Scotland, beasties?