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Providing evidence to improve practice

Individual study: A created forested wetland contained similar numbers of mammal and amphibian species and a lower number of bird species than an adjacent natural forested wetland in Maryland, USA.

Published source details

Perry M.C., Sibrel C.B. & Gough G.A. (1996) Wetlands mitigation: partnership between an electric power company and a federal wildlife refuge. Environmental Management, 20, 933-939

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Create wetland Amphibian Conservation

A site comparison study in 1994–1996 of a created forested wetland in a Research Refuge in Maryland, USA (Perry, Sibrel & Gough 1996) found that the created wetland supported a similar number of amphibian species to an adjacent natural forested wetland. Ten species were captured in the created wetland (284 individuals) and 11 in the adjacent natural wetland (87 individuals). Spotted salamander Ambystoma maculatum was only found in the created site and wood frog Rana sylvatica and marbled salamander Ambystoma opacum only in the natural wetland. As mitigation for loss of wetland, a 9 ha wetland was constructed in 1994, of which 5.5 ha was forested wetland. Amphibians were captured in pitfall and flannel traps along drift-fencing within the created and adjacent natural forested wetland. Trapping was conducted several times during the year.