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What Works in Conservation 2020

William J. Sutherland
Lynn V. Dicks
Silviu O. Petrovan
et al.

1. Amphibian conservation

1.1 Threat: Residential and commercial development

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Unknown effectiveness (limited evidence)

Legal protection of species

1Three reviews, including one systematic review, in the Netherlands and UK found that legal protection of amphibians was not effective at protecting populations during development. Two reviews found that the number of great crested newt mitigation licences issued in England and Wales increased over 10 years. Assessment: unknown effectiveness — limited evidence (effectiveness 10 %; certainty 35 %; harms 7 %).


No evidence found (no assessment)

3We have captured no evidence for the following interventions:

  • Protect brownfield or ex-industrial sites
  • Restrict herbicide, fungicide and pesticide use on and around ponds on golf courses

Table des illustrations

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