During the holiday season, insects can be a nuisance and an unwelcome companion. At first glance, city dwellers in particular may be pleased to hear that insect numbers are falling. Yet this is precisely the kind of good news that, over time, turns into very bad news.
A clean windshield after a long drive, fewer flies by the water or fewer wasps in the garden may seem like small victories for comfort. In reality, they are among the quietest signs that something fundamental is happening to the landscape. Insects are not merely a summer irritation. They are nature’s workforce, pollinating plants, feeding birds, breaking down organic matter and helping to keep soil alive.
The Invisible Maintenance of Ecosystems
The disappearance of insects is not merely anecdotal. It is supported by hard data. One of the most frequently cited studies, conducted in Germany, estimated a 76% decline in flying insect biomass during the season and as much as 82% in midsummer, all within just 27 years.
A similar warning comes from Burgundy, where ecologist Marie-Charlotte Anstett studied blackcurrant plantations grown for liqueur production. She had a rare advantage: measurements from the 1980s were available for the same locations. The comparison was staggering. In less than 40 years, 99% of pollinators had disappeared from the area.
This catastrophe among the smallest creatures is not happening somewhere far away. It is unfolding before our eyes, but we have gradually become accustomed to it. What would have seemed like an alarming void only a few decades ago is now taken for granted as the normal state of the countryside.
The decline in insect populations is creating a profound ecological imbalance. Insects do not perform just one function. They perform many at once. They pollinate plants, decompose organic matter, provide food for birds and fish, help sustain the soil and keep other insect species in check. In other words, insects are not decoration. They are nature’s maintenance crew.
The Economic Cost of a Silent Crisis
The public is not especially sensitive to the scale of this catastrophe, at least not until it starts to cost money. That is already happening. The decline in insect populations has a direct impact on food production. In a sense, it is a reminder of a very simple truth: despite all the technological advances of our time, including artificial intelligence, people still have to eat.
According to the Food and Agriculture Organization of the United Nations, approximately 90% of all flowering plants rely on pollination by animals, mostly insects. Pollinators therefore ensure not only fruit production in agricultural systems but also the reproduction of plants in natural ecosystems. In other words, this is not just about honey, apples or almonds. It is about the ability of the flowering world to renew itself.
This does not mean that we will suddenly find ourselves without food in the near future. The real problem is declining yields. The good news from Burgundy, however, is that these effects can be mitigated.
When scientists covered some of the bushes with nets and introduced bumblebees, yields were more than three times higher than those of untreated bushes. The absence of these insects had a tangible impact on production, which is reason enough to address the problem.
The Fragility of an Optimized World
The pollinator crisis can be tackled, but first it must be understood more deeply. The situation surrounding insect decline is highly paradoxical. Although insect populations are clearly falling, farmers are also facing increasingly severe pest infestations that threaten their crops.
How can this be explained? The decline in insect populations primarily means a loss of diversity. Pollinators, natural predators and the species that kept the landscape in balance are disappearing. Large fields of a single crop, by contrast, act as a banquet for a few specialized pests. The simpler the landscape, the easier the feast.
This is precisely where the main cause lies, and therefore the key to reversing the current trend. Agriculture has undergone a tremendous transformation in recent decades. Thanks to major technological advances, it is now possible to grow a large share of crops with minimal labor.
Mechanization, plant breeding, the massive use of chemicals and large, monolithic fields have maximized potential agricultural yields. But this triumph has a downside.
Agriculture has become more efficient, but also poorer. Field boundaries, hedgerows, flower strips, wetlands and old orchards have disappeared from the countryside, and with them much of the life that held the entire system together.
This reveals a deeper problem. Modern agriculture has been optimized for maximum performance: the highest possible yield, the greatest possible efficiency and the fewest possible obstacles between sowing and harvest.
But an optimized system is also fragile. It works well as long as the world behaves as expected. As soon as weather fluctuations, drought, new pests or a decline in pollinators appear, it becomes clear that high performance is not the same as resilience.
Nassim Nicholas Taleb would say that such a system is not antifragile. It cannot grow stronger from shocks. Quite the opposite. It depends on nothing fundamental going wrong, from the weather and chemicals to pests and pollinators. Yet that certainty is now disappearing. Agriculture that has stripped the land of its diversity, field margins, hedgerows and soil life has fewer and fewer reserves to fall back on.
The crisis surrounding insect decline is therefore far more than sad news for nature lovers. It is a test of modern civilization: whether it can still recognize its own dependencies. We can argue about how much of the blame lies with climate change, intensive agriculture, pesticides or natural cycles. But that will not stop the problem.
Environmental debates can be pushed aside relatively easily in public life. Their consequences cannot. If we continue to ignore the decline of insects, we will lose more than a part of the living world around us. Above all, we will lose the land’s ability to feed us.