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.
1 cell = 0.1 percent of 1989 insect biomass (0.1% of insect biomass in German reserves) · 1,000 cells
Context
German nature reserves saw roughly three-quarters fewer insects in traps over 27 years — not just farmland.
PLOS ONE 2017: ~75% decline in flying insect biomass in German protected areas.
This grid fixes insect biomass in German reserves at 1,000 equal cells (0.1% of insect biomass in German reserves). Figures follow PLOS ONE — insect decline as summarized in the source line — rounded so cell counts sum to the chart.