Martin Sorg

TL;DR: This analysis estimates a seasonal decline of 76%, and mid-summer decline of 82% in flying insect biomass over the 27 years of study, and shows that this decline is apparent regardless of habitat type, while changes in weather, land use, and habitat characteristics cannot explain this overall decline.

TL;DR: In this article, the authors analyzed the abundance (19,604 individuals) of 162 hoverfly species (Diptera: Syrphidae) at six locations in German nature reserves in 1989 and 2014, and generalize the results with a model varying decline rates of common vs. rare species.

TL;DR: The Diversity of Insects in Nature protected Areas (DINA) project as mentioned in this paper investigates insect communities in 21 nature reserves in Germany and uses a DNA metabarcoding approach for species identification.

TL;DR: In this article, a size sorting strategy for Malaise trap samples that maximizes taxonomic recovery but remains scalable and time efficient was proposed. But the results showed that the small size fractions harboured the highest diversity and were best represented when pooling in favour of small specimens.

TL;DR: It is demonstrated that size fractionizing bulk malaise samples can increase taxon recovery and the most practical approach is wet sieving into two size fractions, and proportional pooling of the lysates in favor of the small size fraction.