Providing evidence to improve practice

Individual study: Biodiversity within restored wetlands in South Dakota, USA

Published source details

Juni S. & Berry C.R. (2001) A biodiversity assessment of compensatory mitigation wetlands in eastern South Dakota. Proceedings of the South Dakota Academy of Science, 80, 185–200


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

Restore wetland Amphibian Conservation

A replicated, site comparison study in 1999–2000 of 13 wetlands in South Dakota, USA (Juni & Berry 2001) found that combined amphibian and reptile species richness did not differ significantly between restored, enhanced and natural wetlands. Although not significant, there was a trend for higher numbers of species in restored and enhanced wetlands compared to natural wetlands. A total of 11 amphibian and reptile species were recorded. Study sites were four restored, four enhanced and five natural wetlands. Restoration tended to involve plugging drainage ditches or breaking sub-surface drainage tiles. Enhancement included manipulating water levels to increase wetland size or changing vegetation structure. Monitoring was undertaken using drift-fences with pitfall traps and visual surveys around wetland perimeters in spring and autumn in 1999–2000.

 

Create wetland Amphibian Conservation

A replicated, site comparison study in 1999–2000 of nine wetlands in South Dakota, USA (Juni & Berry 2001) found that amphibian and reptile species richness did not differ significantly between created and natural wetlands. A total of 11 amphibian and reptile species were recorded in the wetlands. Four wetlands had been created during the previous 10 years by excavation or enclosing small streams. Five natural wetlands were used for comparison. Monitoring was undertaken using drift-fences and pitfall traps and visual surveys around wetland perimeters in spring and autumn in 1999–2000.