The Entomologischer Verein Krefeld (EVK) is an entomological society based in Krefeld, North Rhine-Westphalia, Germany. Founded in 1905, it keeps meticulous records and specimens of the area's insects, a collection curated since 1987 by entomologist Martin Sorg. The EVK is known in particular for a study it conducted, published in PLOS One in 2017, that demonstrated a 75 percent decline in flying insect biomass in 63 nature reserves in Germany between 1989 and 2016. The paper became the "third most frequently cited scientific study" of 2017 in the media, according to The Economist. More information...
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