Car 'Splatometer' Tests Reveal Huge Decline In Number of Insects

An anonymous reader quotes a report from The Guardian: Two
scientific studies of the number of insects splattered by cars have
revealed a huge decline in abundance at European sites in two
decades. The survey of insects hitting car windscreens in rural
Denmark used data collected every summer from 1997 to 2017 and
found an 80% decline in abundance. It also found a parallel decline
in the number of swallows and martins, birds that live on insects.
The second survey, in the UK county of Kent in 2019, examined
splats in a grid placed over car registration plates, known as a
“splatometer.” This revealed 50% fewer impacts than in 2004. The
research included vintage cars up to 70 years old to see if their
less aerodynamic shape meant they killed more bugs, but it found
that modern cars actually hit slightly more insects. […] The
stream research, published in the journal Conservation Biology,
analyzed weekly data from 1969 to 2010 on a stream in a German
nature reserve, where the only major human impact is climate
change. “Overall, water temperature increased by 1.88C and
discharge patterns changed significantly. These changes were
accompanied by an 81.6% decline in insect abundance,” the
scientists reported. “Our results indicate that climate change has
already altered [wildlife] communities severely, even in protected
areas.”


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Source: *FS – All – Science News 2 Net
Car 'Splatometer' Tests Reveal Huge Decline In Number of Insects