Chemical signatures of resource competition between honeybees and wild bees along a landuse gradient


scientific investigators:

 

PD Dr. Thomas Eltz

Wiebke Kämper

(University Bochum)

 Prof. Dr. Nico Blüthgen

(University Darmstadt)

Goals

1. Detect honeybee-induced shifts in flower visitation  of bumblebees
2. Evaluate the effect of land use intensity on competition between honeybees on bumblebees
3. Measure fitness consequences for bumblebees

Methods 

Extract footprints from flowers
Run GC/MS analysis
Quantify resource overlap (H2’)
Use landuse intensity (Li) and landscape context as predictor variables in an analysis of floral resource overlap
Measure worker size across EPs
Measure colony growth and reproductive output in a field experiment in the Schwäbische Alb