Action Synopsis: Bee Conservation About Actions

Increase areas of rough grassland for bumblebee nesting

How is the evidence assessed?
  • Effectiveness
    not assessed
  • Certainty
    not assessed
  • Harms
    not assessed

Source countries

Key messages

One replicated controlled trial on lowland farms in Scotland showed that grassy field margins attracted nest-searching queen bumblebees in spring at higher densities than cropped field margins, managed or unmanaged grasslands or hedgerows.


About key messages

Key messages provide a descriptive index to studies we have found that test this intervention.

Studies are not directly comparable or of equal value. When making decisions based on this evidence, you should consider factors such as study size, study design, reported metrics and relevance of the study to your situation, rather than simply counting the number of studies that support a particular interpretation.

Supporting evidence from individual studies

  1. A replicated, controlled trial of the Rural Stewardship agri-environment scheme on 10 farms in Scotland found that 1.5 to 6 m wide grassy field margins attracted nest-searching queen bumblebees at higher densities than managed or unmanaged grasslands or hedgerows (Lye et al. 2009). On five farms with the agri-environment scheme, researchers counted an average of around nine nest-searching queens/100 m on grassy field margins, compared to around seven nest-searching queens/100 m in species-rich grassland transects, five for conventional arable field margins, and four on unmanaged (abandoned) grassland transects. The study did not record the numbers of established nests later in the year.

    Study and other actions tested
Please cite as:

Dicks, L.V., Showler, D.A. & Sutherland, W.J. (2010) Bee conservation: evidence for the effects of interventions. Pelagic Publishing, Exeter, UK


Where has this evidence come from?

List of journals searched by synopsis

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Bee Conservation

This Action forms part of the Action Synopsis:

Bee Conservation
What Works in Conservation

What Works in Conservation

What Works in Conservation assesses the research looking at whether interventions are beneficial or not. It is based on summarised evidence in synopses, on topics such as amphibians, bats, biodiversity in European farmland, and control of freshwater invasive species. More are available and in progress.

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