Summary of “Insects Are in Serious Trouble”

Since 1989, scientists from the Entomological Society Krefeld had been collecting insects in the nature reserves and protected areas of western Germany.
These traps are used by entomologists to collect specimens of local insects, for research or education.
Over the same period, the weight of insects caught in the height of summer, when these creatures should be at their buzziest, fell by 82 percent.
Most of these surveys focused on particular groups, whereas Hallmann’s group looked at the entire spectrum of flying insects.
Insects are the most diverse and numerous group of animals on the planet.
Although weather patterns in the region could explain the numbers of insects across a season, they couldn’t account for the year-on-year decline.
The team didn’t look at larger-scale climate events, like prolonged droughts, and they couldn’t measure the effect of habitat fragmentation-cutting up the land available to insects rather than merely reducing it.
The nature reserves in the German study are small, too distant from each other for insects to travel between, and locked in by agricultural land.

The orginal article.