Solitary Bees & Bumble Bees in a Danish Agricultural Landscape - Data from PhD-study

Study Extent

In the agricultural landscape, three transects were selected, each two kilometres long, along varying types of semi-natural habitats. Small window-traps standing in yellow pan-traps with liquid was used to attract and trap the bees. The traps were placed along the habitats with a constant distance of 100 metres, coming to a total of 64 traps.

Sampling

Traps were normally emptied once a week. Trap yields were rinsed and stored in 70% ethanol.

Quality Control

The material was sorted and all bee specimens counted and identified to species. Colourimetric properties of the yellow pan-traps were measured, and the traps' efficiency of attracting bees was evaluated. Representatives of all species recorded are kept as dry pinned specimens at Natural History Museum of Denmark, currently in personal collection of Isabel Calabuig at the museum.

Method steps

1. See "Introduction to survey" pages 10-11 and the Material & Methods section (pp. 22-28) in manuscript 1 "Assessment of the foraging- and nesting conditions for solitary bees and bumblebees, and their distribution in a Danish agricultural landscape" in the PhD-thesis available at https://www.researchgate.net/publication/268337586_Solitary_Bees_and_Bumblebees_in_a_Danish_Agricultural_Landscape

All specimens were identified to species level.

1. Andrenidae
   rank: family
2. Apidae
   rank: family
3. Colletidae
   rank: family
4. Halictidae
   rank: family
5. Megachilidae
   rank: family

Ringsted area, Zealand, Denmark. Link to Google map with traps indicated: https://drive.google.com/open?id=1BcoGsRV1GlBlQAM_K58CjLvPkvA&usp=sharing