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Providing evidence to improve practice

Individual study: Restoration of breeding snowy plovers Charadrius alexandrinus nivosus following cordoning of a section of beach to restrict public access, Sands Beach, Coal Oil Point Reserve, California, USA

Published source details

Lafferty K., Goodman D. & Sandoval C. (2006) Restoration of breeding by snowy plovers following protection from disturbance. Biodiversity and Conservation, 15, 2217-2230


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Use signs and access restrictions to reduce disturbance at nest sites Bird Conservation

A small before-and-after study on a beach in California, USA (Lafferty et al. 2006), found that the number of breeding snowy plovers Charadrius alexandrinus increased from one pair in 2001 to 26 pairs (fledging 74 young) in 2004, following the installation of a simple rope fence in June 2001. The probability of eggs being trampled in 2002 was 8% outside the roped area, compared with 0% inside. The fence consisted of metal posts every 5 m and a single rope strung across the top. In 2001, 265 m of beach was roped off; this increased to 400 m in 2002 and further increased in 2003-4.