Study

Meta-analysis shows that predator removal does not appear to increase nesting success in dabbling ducks Anas spp. in Prairie Pothole Region of North America, but that fences may do

  • Published source details Beauchamp W.D., Nudds T.D. & Clark R.G. (1996) Duck nest success declines with and without predator management. The Journal of Wildlife Management, 60, 258-264

Actions

This study is summarised as evidence for the following.

Action Category

Physically protect nests from predators using non-electric fencing

Action Link
Bird Conservation

Control predators not on islands for wildfowl

Action Link
Bird Conservation
  1. Physically protect nests from predators using non-electric fencing

    A 1996 meta-analysis of 58 studies from the Prairie Pothole Region of the USA and Canada between 1935 and 1992 (Beauchamp et al. 1996) found that the nesting success of dabbling ducks Anas spp. declined over the study period, and that the rate of this decline did not differ between fenced sites and sites with no predator control. However, the intercept of the regression slope did differ significantly; with nesting success being higher in fenced sites than in sites without management or where predators were removed. There was no difference between fenced and island sites.

    A 1996 meta-analysis of 58 studies from the Prairie Pothole Region of the USA and Canada between 1935 and 1992 (2) found that the nesting success of dabbling ducks Anas spp. declined over the study period, and that the rate of this decline did not differ between fenced sites and sites with no predator control. However, the intercept of the regression slope did differ significantly; with nesting success being higher in fenced sites than in sites without management or where predators were removed. There was no difference between fenced and island sites.

    A 1996 meta-analysis of 58 studies from the Prairie Pothole Region of the USA and Canada between 1935 and 1992 (2) found that the nesting success of dabbling ducks Anas spp. declined over the study period, and that the rate of this decline did not differ between fenced sites and sites with no predator control. However, the intercept of the regression slope did differ significantly; with nesting success being higher in fenced sites than in sites without management or where predators were removed. There was no difference between fenced and island sites.

  2. Control predators not on islands for wildfowl

    A 1996 meta-analysis of 58 studies from the Prairie Pothole Region of the USA and Canada between 1935 and 1992 (Beauchamp et al. 1996) found that the nesting success of dabbling ducks Anas spp. did not differ significantly between sites where predator removal was practiced and those without removal. In addition, there was a significant decline in nesting success over the study period, but the rate of this decline did not differ between sites with predator removal and those without. Two of the studies analysed are described above (Balser et al. 1968, Duebbert & Kantrud 1974).

     

Output references

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, terrestrial 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 latest volume: Volume 17

Go to the CE Journal

Subscribe to our newsletter

Please add your details if you are interested in receiving updates from the Conservation Evidence team about new papers, synopses and opportunities.

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