Study

Impact of the Conservation Reserve Program on duck recruitment in the U.S. Prairie Pothole region

  • Published source details Reynolds R.E., Shaffer T.L., Renner R.W., Newton W.E. & Batt B.D.J. (2001) Impact of the Conservation Reserve Program on duck recruitment in the U.S. Prairie Pothole region. Journal of Wildlife Management, 65, 765-780.

Actions

This study is summarised as evidence for the following.

Action Category

Restore or create grasslands

Action Link
Bird Conservation
  1. Restore or create grasslands

    A replicated, randomised and controlled before-and-after trial study from May-July in 1992-1997 in North Dakota, South Dakota and Montana, USA (Reynolds et al. 2001), found that the nest success and reproductive rate of mallards Anas platyrhynchos, gadwalls A. strepera, blue-winged teals A. discors, northern shovelers A. clypeata and northern pintails A. acuta on 335 10.4 km2 plots increased significantly following the conversion of plots to perennial grassland by 1992. Estimated nest success and recruitment rates of the five species were 46% and 30% higher than in croplands. Mallard and blue-winged teal showed the largest (38 and 32% respectively) and gadwall showed the smallest (21%) gains in recruitment rate after restoration. Nest success was positively correlated with total planted grass cover in plots for all species except northern shoveler. Daily survival rate of duck nests in croplands from a pre-existing dataset from 1980-1984 (pre-restoration) and 1990-1994 (restoration) were used to compare treatment effects.

     

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 19

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