On-farm habitat restoration counters biotic homogenization in intensively managed agriculture

  • Published source details Ponisio L.C., M'Gonigle L.K. & Kremen C. (2015) On-farm habitat restoration counters biotic homogenization in intensively managed agriculture. Global Change Biology, 22, 704-715.


This study is summarised as evidence for the following.

Action Category

Pollination: Plant hedgerows

Action Link
Mediterranean Farmland
  1. Pollination: Plant hedgerows

    A replicated site comparison in 2007–2013 in farmland in the Central Valley, California, USA, found greater bee diversity in mature hedgerows compared to weedy field edges or immature (“maturing”) hedgerows. Pollinator numbers and Implementation options: Greater bee diversity was found in mature hedgerows compared to weedy field margins or immature hedgerows, but not in immature hedgerows compared to weedy field margins (data was reported as beta-diversity, which is change in the diversity of species between sites). Twenty-eight percent of bee species were found only in hedgerows. Thirteen percent were found only in weedy edges. Methods: Native, perennial shrubs and trees (3–6 x 350 m) were planted 1–10 years (immature hedgerows) or >10 years (mature hedgerows) before bees were collected. Bees were collected if they touched the reproductive parts of flowers, in one-hour samples of 21 hedgerows and 24 weedy edges, 2–5 times/year, in April–August 2007–2013.


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 21

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 ProgrammeRed List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Mauritian Wildlife Supporting Conservation Leaders
Sustainability Dashboard National Biodiversity Network Frog Life The international journey of Conservation - Oryx Cool Farm Alliance UNEP AWFA Bat Conservation InternationalPeople trust for endangered species Vincet Wildlife Trust