Study

Bee conservation and increasing Osmia spp. in Maine lowbush blueberry fields

  • Published source details Stubbs C.S., Drummond F.A. & Allard S.L. (1997) Bee conservation and increasing Osmia spp. in Maine lowbush blueberry fields. Northeastern Naturalist, 4, 133-144.

Actions

This study is summarised as evidence for the following.

Action Category

Provide artificial nest sites for solitary bees

Action Link
Bee Conservation

Provide artificial nest sites for solitary bees

Action Link
Bee Conservation
  1. Provide artificial nest sites for solitary bees

    In a replicated trial in Washington County, Maine, USA, Stubbs et al. (1997) added 50 drilled wooden nest boxes to each of three blueberry fields Vaccinium angustifolium over three years. The nest boxes each had 14 holes and were attached to trees along the field edge, at a height of 1.4 m, with 22-33 m between each box. In the first year, 30 nest boxes were occupied by bees of the genus Osmia, with 120 nests made. The number of nests increased the following year in all three fields. Between 3 and 11.5% of nesting holes were occupied at all three sites, each year.

  2. Provide artificial nest sites for solitary bees

    In a small replicated trial in Washington County, Maine, USA, Stubbs et al. (1997) added 50 drilled wooden nest boxes to three experimental blueberry fields Vaccinium angustifolium over three years from 1993 to 1995. The percentage of holes occupied rose from around 3% in the first year to over 7% in the third year in two fields, but did not rise substantially in the third field, remaining between 5 and 7%. Numbers of bees of the genus Osmia foraging on blueberry flowers in the experimental fields and in three control fields without nest boxes were monitored, using quadrat counts and sweep net sampling. In the first year, estimated numbers of Osmia ranged from 0 to 879 bees/ha in both control and experimental fields. In the third year, control fields had between 0 and 440 bees/ha, while experimental fields with nest boxes had from 219 to 1328 bees/ha. The numbers of foraging bees had increased in two of the three fields with nest boxes.

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust