Experts predict insect apocalypse—with a warning coming from plunging insect numbers in Europe.
A meta-study from February 2019 found 40 percent of the world’s insects could become extinct in the next few decades in a “catastrophic collapse.”
Insect populations have dropped by over 75% in some locations, and the total mass of insects on the planet is dropping by 2.5% a year.
A report this year found that 40% of insect species are declining, with a third endangered, according to a global scientific review.
Martin Sorg of the Amateur Entomology Society of Krefeld told Phys.org, ‘We only became aware of the seriousness of this decline in 2011, and every year since then we have seen it get worse.’
Sorg and other scientists use insect traps to indicate insect population sizes. Sorg said, ‘Since 1982, the traps we manufacture ourselves have been standardised and controlled, all of the same size and the same material, and they are collected at the same rate in 63 locations that are still identical.’
The traps demonstrated extreme dwindling populations when comparing the weights of the traps from 1994 until a more recent trap. The trap in ‘94 contained “1,400 grammes of trapped insects, the newest one just 300 grammes.”