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The Insect Problem

The Insect Problem

The windshield phenomenon: a shorthand used by entomologists to describe the observation people make of having fewer insects stuck to their windshield after a drive, of seeing fewer insects flying about under streetlights at night, of swallowing less insects while making a summer bike ride.

Insect groups are struggling. In Germany, scientists reported a decline in the biomass of flying insects by 75% in only 27 years. In Puerto Rico’s Luquillo rainforest, researchers repeated a study on insect populations conducted in the 70s, leading them to conclude that the dry weight biomass of arthropods captured in sweep samples declined by 4 to 8 times, and in sticky traps, the decline was up to 30 to 60 times.

Most recent to have ringed the alarm bell is a group of scientists who analyzed 73 scientific reports on the decline of insect population that have appeared in the past 40 years (though to note a point of criticism: they left out studies on population increases or stability). In Biological Conservation, they write: “Our work reveals dramatic rates of decline that may lead to the extinction of 40% of the world’s insect species over the next few decades.”

Verschenen en te lezen op Dysfunctional, 28 april 2019

Waarom hebben we het niet constant over de insecten?

Waarom hebben we het niet constant over de insecten?

Milieumelancholie