Pollinating insects declining faster than expected |
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Hoverflies decrease by 50 to 90 percent over 30 years
The number of pollinating insects is declining faster than expected. New research on hoverflies across various locations shows that their populations have declined by 50 to 90 percent over the past thirty years. This is concerning, as hoverflies are the most important pollinators after bees.
This article was previously published on April 10, 2026 on the website of Stad + Groen.
| A pollinator on a spring flower (Image: NWST) |
Against this background, EIS Knowledge Centre for Insects is launching a nationwide pollinator count this week. The research is commissioned by the Ministry of Agriculture, Fisheries, Food Security and Nature.
Crucial for green space and food production
Pollinating insects play an important role in both nature and public space. They ensure plant reproduction and form a food source for birds, bats and other animals. They are also essential for food production. Approximately 85 percent of food crops depend on insect pollination. Without pollinators, many fruit varieties and other crops would disappear from orchards and shops.
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This is concerning, as hoverflies are the most important pollinators after bees
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Habitat under pressure
The main cause of the decline is the loss of suitable habitat. Intensive agriculture, pesticide use, nitrogen deposition and drought are reducing food sources and nesting sites for insects. This also affects urban areas. Less flower-rich green space and uniform design of public areas make it harder for pollinators to survive.
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Without pollinators, many fruit varieties and other crops would disappear from orchards and shops
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Challenge for municipalities and managers
This presents a clear challenge for municipalities and green contractors. The design and management of verges, planting beds and parks can contribute to restoring habitats, for example by increasing diversity, planting flowering vegetation and applying more extensive management. According to European agreements, the decline of pollinators must be halted by 2030, after which recovery should begin. This requires targeted measures in both rural and urban areas.
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The main cause of the decline is the loss of suitable habitat. This presents a clear challenge for municipalities and green contractors
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