2017-06-09 · percent of 1989 insect biomass
Flying insects crashed in protected areas
German nature reserves saw roughly three-quarters fewer insects in traps over 27 years — not just farmland.
Biomass grids are about weight on Earth, not headcount — a whale and a mouse can share a color family but not a cell count story. This grid divides insect biomass in German reserves (2017 snapshot) into colored bands — Lost by 2016 and Remaining — using equal squares so you compare shares, not country size on a map.
1 cell = 0.1 percent of 1989 insect biomass (0.1% of insect biomass in German reserves) · 1,000 cells
Context
The 2017 figures from PLOS ONE — insect decline put Lost by 2016 at 75% of insect biomass in German reserves and Remaining at 25% — about 100 percent of 1989 insect biomass in this edition's rounding.
PLOS ONE 2017: ~75% decline in flying insect biomass in German protected areas.
Hallmann et al. PLOS ONE 2017: ~75% decline in flying insect biomass in German protected areas.
Share and export
Credit this grid as Inagrid — https://inagrid.com/e/2017-06-09-insect-biomass-decline