More than 75 Percent Decline over 27 Years in Total Flying Insect Biomass in Protected Areas

by Caspar A. Hallmann; Martin Sorg; Eelke Jongejans; Henk Siepel; Nick Hofland; Heinz Schwan; Werner Stenmans; Andreas Muller; Hubert Sumser; Thomas Horren; Dave Goulson; Hans de Kroon

Oct 18, 2017