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Providing evidence to improve practice

Individual study: Wildfowl use ponds blasted into marshland near Lake Manitoba, Canada

Published source details

Hoffman R.H. (1970) Waterfowl utilization of ponds blasted at Delta, Manitoba. The Journal of Wildlife Management, 34, 586-593


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

Create scrapes and pools in wetlands and wet grasslands Bird Conservation

A before-and-after study on a marshland site near Lake Manitoba, Manitoba, Canada (2), found that between the summers of 1965 and 1966 there was a 288% increase in the number of wildfowl using 25 ponds created by blasting in August 1964 and 1965. There was a smaller increase at natural marshlands nearby. A total of 11 species were seen, mostly of dabbling ducks Anas spp. Ponds averaged 132 m2 and 1.5 m deep.