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Land cover and flying insect diversity

Low vegetation boosted insect biomass and richness more than expected across German monitoring sites.

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How many insect OTUs?

50,087 total OTUs.

Validated named species?

10,803.

How many monitoring sites?

75 sites in Germany, 2019–2020.

Mean biomass in 2019?

2.0 g/day per site.

Largest insect order share?

Diptera 36%.

Effect of more low vegetation?

Biomass up 50% (2019) and 56% (2020); richness up 58% and 33%.

What fraction of site variation did land cover/weather/climate explain?

42%.

Trap type?

Townes-type Malaise traps.

Read pairs sequenced?

About 3.999 billion demultiplexed read pairs.

What is a more-protected category here?

National parks, nature reserves, and inner biosphere zones grouped together.

Seasonal biomass–richness pattern?

Both peaked midsummer; turnover was lowest after peak biomass.